问:
Delayed Wake Up Time
I'm having issues with my LG G3 CM13. Whenever it's locked and I double tap the screen or press the button on the back, it takes about 5 seconds for it to wake up. Could anyone help me with this issue?</p>

Title: Delayed Wake Up Time


问:
Cannot use ADB on a bricked phone
I'm trying to unbrick a soft-bricked Android phone, and many tutorials say to use ADB to fix it, but I cannot use ADB or fastboot, since the device is not reconized. It's a Lenovo Zuk Z1, I am running Lubuntu, and it bricked because i formatted every single partition with CWM recovery, I can go into Zuk Recovery and download mode.</p>

ContentLicense: CC BY-SA 3.0

Title: Cannot use ADB on a bricked phone


问:
how to fix bricked ascend P6 with new firmware
I have a Huawei P6 ascend that currently will not boot to android. The splash screen will come up and the huawei red rose stays pulsating forever - this is apparently after huawei forced an unwanted software upgrade (since I didn't initiate any upgrade).

When I hold vol +- and reboot I get to the 'bios' or rom update mode (whatever the real name of this mode might be).  So reading some forum entries I put a file 'update.app' from here on a sdcard (both zipped, and unzipped in a folder 'dload' as well as at the root of the sdcard.)

Upon booting into rom-update mode however I never seem to get a successful reflash.

The system says:

ro.build.version =4.42

ro.product.name=UEDGE

Current build version release is not 4.2, don't need move/

Warning:battery percent is less than 15

Huawei USB update fail....

cust copying files...

copy cust files successed!

ensure_path_remounted_rw Failed

and i get a dead robot

FAIL

LOW BAT

fooling with various options that I get to after a while (like wipe data etc) doesn't seem to help so far.  Any clues?

I am now also trying (again) the options

wipe data factory reset

wipe cache partition

after doing those and trying again to install /sdcard/dload I get

E: failed to seek in /tmp/sideload/package.zip (invalid argument)

E: signature verification failed

formatting /cache

installation aborted

cust copying files

copy cust file successed!


问:
Nexus 6P remote control headphones not working
I recently acquired a Nexus 6P, which runs Android Marshmallow. I'm trying to use it with my Beyerdynamic Custom One Pro Plus, which has a mic with a remote control (one button, wired, not Bluetooth, which I used to use for starting and pausing songs, and answering phone calls on my previous device). I figured it would work on my Nexus 6P as well. However, I've found something very peculiar. I have three scenario's:

Scenario 1

I simply plug in my headphones, click the button to start music. I do not even unlock my phone for this, nor do I start Google Play. This used to work on my previous device.

In this scenario, the button does not work. Nothing happens at all.

Scenario 2

I plug in my headphones

I unlock the device, start Google Play, and start a song (not using headphone remote).

I then push the remote button on my headphones to pause the song.

In this scenario, the button does not work. Nothing happens at all.

Scenario 3 (this is where it gets interesting)

I plug in my headphones

I unlock the device, start Google Play, and start a song (not using headphone remote).

I lock my phone, while I keep the music playing.

Then, while the music's still playing, I unplug my headphone from the device (when I do that, the music automatically stops playing).

Then, while I keep the device locked, I plug in my headphones again.

I then try the remote button.

When I do it like this, it works perfectly! I can pause and start the song, and when a call comes in, the music is faded out, my ringtone sounds, and I can answer and end the call with the remote button, without ever unlocking my phone. In other words, it works exactly as I expect it to work.

I have tested this over and over again, and every time I get the same results. The remote button only works in scenario 3. This erases my suspicion that it could be a hardware problem; after all, if it were a hardware problem, the remote wouldn't work in any scenario, right?

So my question is, does anyone have an explanation/solution for this? Because it's very cumbersome to have to go through all the steps I described in scenario 3.


问:
Xposed unable to install after minor CM update
I just updated Cyanogenmod from CM-11-20151122-NIGHTLY-i9300 to CM-11-20151130-NIGHTLY-i9300 on my Galaxy S3. After completion the usual Xposed reinstall was no longer possible:

Click on the image to enlarge

```<code>CANNOT LINK EXECUTABLE: cannot locate symbol "_ZN7android14AndroidRuntime5startEPKcS2_"
referenced by "/data/data/de.robv.android.xposed.installer/cache/app_process"...
</code>```

The changelog does not state related changes. This error has never occurred to me. I only changed the recovery from Clockworkmod to TeamWin.

Any help is greatly appreciated.


问:
OpenVPN Connect (Android): How to allow local traffic to bypass VPN
I use the OpenVPN Connect app on my Android devices to route my internet traffic through commercial VPN Service providers (Private Internet Access and IPVanish).

I can access the internet through the VPN with no issues.  Problem is, while I'm connected, my device cannot communicate with other devices on my Local Area Network (LAN). For instance, if I use ES File Explorer app to open a folder on my Network Attached Storage (NAS), I get a timeout error.  When I disconnect from the VPN, everything works.

Another VPN client, OpenVPN for Android, does not suffer this limitation. It appears to be able to distinguish which packets to send to the VPN server, and which packets to send to the LAN devices.  Digging through the options for this app, I noticed a setting titled Bypass VPN for local networks that controls this behavior.

Unfortunately, for my use case, I cannot switch to the OpenVPN for Android app.  Its UI for connecting/disconnecting is too complex to be useful on my streaming box (Amazon Fire TV) where I have only a remote to navigate (no mouse, no touch).

Is it possible to configure the OpenVPN Connect client to bypass the VPN for LAN communications?  Alternatively, is there an OpenVPN client for Android that has this feature and works reliably and is easy to use with just a remote?

I have looked for answers in the OpenVPN help forums and found that the question has been raised (https://forums.openvpn.net/topic16773.html) and raised (https://forums.openvpn.net/topic19489.html) but never answered.

Please help if you can. I have no networking experience so please be explicit.


问:
Why can't install 15MB app when I have 180MB free?
I want to install an app from Google Play, where it's said it has 14.99MB.

However, when I click on Install, it says "Insufficient storage".

When I click View Storage, there says 180MB available.

Why can't I just download it to the SD Card?

As I see, this has been a persistent error, though in other posts people are talking about 15 MB of free space. I got more than 10 times that, so isn't it strange?

Also, the Storage screen don't show the available space as part of the bar "Device Memory", above. Does that happens with anyone else?

I'm using a Sony Xperia.

Thanks in advance.


问:
Unable to flash zip made by ZIPme app
Device details:

YU Yuphoria

Android 6.0 Marshmallow (AOSP custom firmware)

Root Access: Not yet

Bootloader: Unlocked

Recovery: TWRP v2.8.7.0

I made a flashable zip of my apps along with their data through this app while I was on CyanogenMod 12.1 (with root access). Now when I try to flash that zip file in the ROM I mentioned above, I'm unable to do so.. I get an error:

```<code>ZIP file is corrupt
</code>```

I'm unable to make out what's causing this error.. I could assume that the app which I used is not a good option for me to make zips, but many users have tried that app & gained success.. Please help me troubleshoot this..

Title: Unable to flash zip made by ZIPme app


问:
Why is my phone coming on in my pocket?
I've got a stock Nexus 6p and I have noticed several times that the phone has come on by itself while in my front pocket and is waiting for some kind of input.  Furthermore, in some cases it has somehow got to the dialer which has been filled with a long string random digits - fortunately it hasn't actually dialed any of them yet!  I'm not sure how digits are even being dialed, as I keep the screen facing in (as the radio antennas are exposed on the back).

I turned off "Ambient Display" but this is still happening.

My phone is protected both by a PIN and the fingerprint reader, although it appears the dialer doesn't need either one to be activated?

There are apparently some apps which will "prevent" your phone from waking up when the proximity sensor detects the phone is on your pocket, but I'm wary about these without knowing more technical details: for instance, is it really possible to prevent the screen from coming on, or it detecting the screen has coming on with the proximity sensor in the "near" state and then shutting the screen back off?  Are such apps even necessary any more?  This seems like such a fundamental necessity that it would be built into the OS by now!

Is there some feature in Android to prevent the dialer from coming up at all without unlocking the phone?  I can't even figure out how to get the dialer to come up without getting past the lock screen. (Do I have to click "Emergency" from the PIN entry screen? I'm afraid to test that as it might go directly to dialing 911 without further input!)  I don't think I'm accidentally unlocking the phone with my finger as I don't usually keep my hands in my pockets; further I haven't felt any haptic feedback, and half the time I have trouble getting my finger in the right orientation to get recognized when I'm actively trying to unlock the phone.

Title: Why is my phone coming on in my pocket?


问:
Gmail not showing notifications on Nexus 5x?
I have been using Xperia U on ICS and never faced this issue. With my 1 week old Nexus 5X I sporadically get notifications for my gmail app i.e. sometimes (10%) it shows notifications but most of the times it doesn't. This also happens even if I am using my phone. So definitely nothing to do with deep sleep. I manage my personal gmail account as well as university email. Please tell me some solution to this problem as I am missing important mails from my university and am considering returning this crappy phone.</p>


问:
Enable Hangouts SMS Notification on second user
I'm using Android with a main user and a secondary user account.

How can I enable notifications when I receive a new SMS?

This notifications are apearing in the main user only.
For the secundary account only when I open Hangouts I can see the unread SMS messages.

I've been looking in the Hangouts settings and can't enable this option.

I'm using a Nexus 5 with Marshmallow 6.


问:
Gmail for one email address, inbox for the other
I have 2 google email accounts, one personal and one for work. I want to use my personal email account on Inbox and my work email on Gmail. I want it so that when I receive emails I can see each icon so that at a glance I know if the email is personal or for work. How can I set this up?</p>


问:
How to make Startup PIN make a loud noise
My phone unexpected rebooted itself this evening while I was cycling.  This was unfortunate, because I was logging my ride with GPS, and my phone was inside a pack where I could not tell it had rebooted.  Worse still, even though the logging app would have automatically detected that logged was enabled and restarted logging, causing me to only lose a couple minutes of data, the device itself was stuck at the boot screen waiting for a PIN.  The reboot happened about one minute into my ride, and thus my entire ride was lost.

I have done some research and have found that the only way to disable encryption on my phone involves unlocking and flashing a new bootloader and reformatting the entire flash, which has risks of its own and I am not comfortable doing at this time.  So barring that I would like some way to know when my phone is wanting me to enter the PIN so it can boot, so that when I am running a logging application I don't lose all my data simply.

How can I make my phone forcibly alert me when it wants this info?  Preferably a loud tone of some kind that would persist until the PIN is entered.

Update: Ok, apparently after a while the device starts making a faint clicking noise, but this is nothing I would ever hear while outside.


问:
HTC EVO TWRP No Kernal Installed TWRP
I have a freedom pop HTC EVO LTE (Jewel), and I have erased the image and no OS is installed.  I have TWRP installed and I can boot to recovery, but I am unable to flash any ROMS.  I have tried MeanBean, but the kernel install is not working and errors out.  How can I get the Kernel and or a new ROM installed so the phone will boot?

TAMPERED
UNLOCKED
S-ON
HBOOT-2.1.0000

Title: HTC EVO TWRP No Kernal Installed TWRP


问:
Google Play - one account, but downloading apps only on the first of two devices sharing the same account
I have a phone - Samsung Galaxy S4 and a tablet Sony Xperia Z. Until now, I had a problem with Google Play - as I first set up Google Play account on my tablet using my email address, and later bought the phone and set it up there as well, I realized that if I wish to download app for my phone, it automatically downloads the app on my tablet, but not on my phone! All the other apps, like FB, Gmail, LinkedIn etc. are working on both devices using the same account, but Google Play automatically applies my commands to the tablet, even though I want to download the app for my phone.

I plan to buy Samsung S6 and I am wondering what to do about this as I feel I will have the same issue. I don't want to open the new account for the phone, as that would mean I have to change all of my other accounts, and I use this email address for so many years, at so many social networks.

I feel like an idiot, is there any answer why is this happening and where did I make a mistake?

Thanks guys!


问:
Execute APK in /data/local/tmp?
I built an APK using Apache's Ant. I also used Ant to install it on a Cyanogenmod device:

```<code>$ cd Android-PRNG
Android-PRNG$ ant debug install
...
install:
    [echo] Installing .../AndroidPrng-debug.apk onto default emulator or device...
    [exec] 1476 KB/s (17773 bytes in 0.011s)
    [exec]  pkg: /data/local/tmp/AndroidPrng-debug.apk
    [exec] Success

    BUILD SUCCESSFUL
</code>```

So I have the APK located at /data/local/tmp/AndroidPrng-debug.apk.

The problem I am having is I cannot figure out how to run it. The APK does not show up in the Apps Launcher (that's somewhat expected). Cyanogenmod's FileManager v1.0.2 does not appear to let me navigate to /data/local (that's not expected).

How, exactly, do I execute the APK I just pushed to the device?

I'm working this way because Eclipse and the Android plug-in are so broken they are basically unusable.

Title: Execute APK in /data/local/tmp?


问:
How to set up priority mode in Android 4.3?
I have an Android 4.3 phone and don't expect any Lollipop updates soon. However, Lollipop's "Priority Mode" is a feature that would be tremendously in my daily life.

Specifically, I expect the following:

Phone rings only when receiving calls from specific callers, otherwise stays silent

SMS notification sound only when receiving texts from specific people

GMail notification sound only for mails from specific senders

To achieve this, I came up with the following "solution" so far:

Ringtone: I set the default ringtone to none, then set the actual ringtone for the specific contacts only.

SMS notification: Haven't found anything useful here...

GMail notification: In the GMail web app, I set up a filter that adds a label to messages from specific senders; then in the GMail Android app I set the notification sound for those labels. I turned off the notification sound for my inbox in general.

The upside of this solution is:

It works (more or less). It was rather easy to set up, because we're talking about just 3 "priority contacts". I didn't need to install any extra apps, which sometimes complicate things and maybe cost money.

The downside of this solution is:

I don't see any easy way switching between "priority" and "normal mode" -- I had to set both the default ringtone and GMail notification sound by hand. Also, SMS are not prioritized, but that's not so much of a pain, because I don't receive so many texts from "less important" people.

My question:

Generally, what would be considered "best practice" to set up priority mode (in this case for phone calls, SMS and GMail) before Android 5.x?

Is there any way to set custom notification sounds for SMS from specific contacts? Or is there any recommendable app which allows to do exactly that?

Or better yet: How could I easily switch between "priority" and "normal mode" without having to change settings in three different places -- is there any app which handles phone calls, SMS and GMail altogether?


问:
Why "df" and "du" show different space usage on /storage/emulated/0?
My Moto X (first generation) has a 11.9GB of user storage, almost all of which is used. Here is the relevant line from df:

```<code>Filesystem               Size     Used     Free   Blksize
/storage/emulated/0     11.9G    10.3G     1.6G   4096
</code>```

But when I go to the mount point and run du:

```<code>/storage/emulated/0 $ du -hs .
5.0G    .
</code>```

There are no mount points under /storage/emulated/0, so it can't be the files hidden under mount points issue.

Android Settings and ES File Explorer show numbers that corroborate this, with ~10GB used but a breakdown that doesn't total more than 5GB.

Is 10GB actually being used? If so, how can I find out where the other 5GB is going?

ContentLicense: CC BY-SA 4.0


问:
How do I sever the connection between an account and my phone?
I have a Note 4, and recently I signed into a certain account so I could do something, nothing important, so I'd rather not say. Then, I removed it by going to  Settings> Accounts> (Accountname, or email or whatever) and I removed it from my device, so it doesn't show up there anymore, with sync, or anything. Gone.

But when I accessed my pictures from the Gallery, I now have a notification asking to sign into that account that I removed. I don't want anything to do with that account anymore, ever. Nothing at all. I can't figure out what still has my phone connected to that account, but whatever it is, I want it stopped.

I don't know if I have to sign back into that account, disable the syncing in Settings> Accounts> (Account name), or something.. which wouldn't make sense, because I removed it from the phone completely, before.. or what.

Anyway, I want to know how to sever whatever the connection is between my phone and that account, and what to do about it.


问:
Preinstall android apps without system permissions
I want to make an android image with preinstalled apps. But I want them to not have access to the extended permissions available when /system/app/ installed. How can I make that sure?</p>

OwnerDisplayName: RudiRübe


问:
Google Play Error code “-504”
I'm facing an annoying issue with Google Play over and over again. There are some apps (currently Deezer and Teamtreehouse) which can't be updated/installed due this error:

"Can't install App" (Error code: -504)

FYI: This is not a 504 but negative 504 error

The only working solution what I found is the factory reset an wiping the whole phone, which is really annoying doing this every month. My question is, someone has easier solution for this error?

I have tried all solution what I found:

force stopping play store / play store framework

clearing data

clearing cache of google play store & google service framework

removing  gmail account

side-loading apps

directly installing apks

searching apps related files on phone and removing them

Image of the error:

My phone details:
Xperia M4 Aqua

Android 5.0

Title: Google Play Error code “-504”


问:
Cancel ADM Reset
My phone was recently stolen so I used ADM to reset everything but this afternoon I found the bugger who took it and retrieved it the problem is when I connect to the wifi it will wipe everything is there anyway to tell ADM not to reset?</p>

Title: Cancel ADM Reset


问:
Tasker Exported Apps Not Working
I have two Tasker projects that I would like to be able to share as stand alone apps. Project 1 turns Wifi On and Off based on location and Project 2 turns the screen on and off using the proximity sensor. I exported both separately (from my Samsung Galaxy Note 4 running stock 5.1.1) and sideloaded into my second device (Samsung Galaxy s5 running stock 5.0.0). Both apps install properly, display the correct required permissions, and display notifications (flash and popup) properly but will not effect the device in any other way. Project 1 will not change the Wifi state and Project 2 will not turn the screen off (using System Lock).

Has anyone experienced this before or can suggest why this might be occurring and what I might be able to do to solve it?

Title: Tasker Exported Apps Not Working


问:
Can I screen cast / screen mirror and use the phone at the same time?
I have a Samsung Galaxy 6 and Google Play Movies app running. I can screen mirror to the TV but as soon as I try to use my phone for other things like check my email the video stops playing.

Is there a way I can start the video (screen cast/screen mirror) and then use my phone for other things at the same time?

Here is what my screen looks like:

I select it and then I see this screen:

FYI I couldn't create the tag "Screen Mirroring". Here is a description if someone wants to create it, http://www.samsung.com/ie/support/skp/faq/1057791.


问:
Why does 4.4 support infinite Bluetooth visibility duration, but previous versions don't?
I'm building an app that forms a network using Bluetooth. However, Android versions less than 4.4 do not support infinite Bluetooth visibility duration. Every x amount of time (usually an hour), the app has to prompt the user to enable Bluetooth visibility. In 4.4, you can go into the Bluetooth settings and select "Never timeout" for Bluetooth visibility.

What changed between Android 4.3 and 4.4? Why didn't Android 4.3 support infinite visibility? Why does 4.4 and higher support infinite visibility now?


问:
How are certs validated against default trust store?
Through some reading, I have a fairly rough understanding about how https works with Android apps, especially how are certificate validations done. Some of the resources that I referred to for gaining this understanding would be :

Validating certs in Android

SSL in Android apps

Validating SSL - Android

As per my understanding, I could roughly say that apps can validate against :

The default Trust Store that Android provides - which has a list of all the CA certificates that are by default trusted by the OS and hence by the browser and the app itself. This is the same list of CAs that can also be seen in Settings -> Security -> Trusted credentials (in JB+) or system/etc/security/cacerts.bks (in Android < JB)

OR

Developers can choose to define their own custom keystores and make an SSLSocketFactory with them to trust their custom trust store.

My question revolves around the first case described above. In most of the places that I could read about it, I discovered it mentioned that for validating the certificates against the default Trust Store, the developer does not really need to do anything explicitly. Just hit the https end point and play on with the HttpsUrlConnection object returned.

The certificate validation itself is internally (by default) taken care of by Android OS.

Now I would like to know how exactly is the above (highlighted) done ? What is the API/internal method/anything else that Android actually calls to do this certificate validation ? Where can I find this information ? One approach I can think of is to go through the Android source itself, but I have no clue which part of the code does it (and plus it would be a lot of efforts).

Please advice.


问:
Downloads not possible after root
I rooted my Samsung Galaxy S5 (Android 5.0, SM G900F) recently with Odin. While I rooted it, I had Kingroot installed. Since Kingroot took over the root management, I'm not able to download files with 3rd party apps (like my browser or whatsapp). I already tried to replace Kingroot with SuperSU, but the script which seems to be the only way to do that didn't work for me. For me it looks like the apps didn't have the permission to write to the internal storage. For some reason downloading apps from the Google Play Store works. I downloaded "Root Browser" and it shows me, that my whole /storage/emulated/0/ is owned by root:root and has rwxrwx--x permissions (the subdirectories too) what seems a little bit strange for me (is that normal?), but I'm not able to change them (Root Browser says that you can't change permissions on some file systems).
I already searched for this problem, but I didn't find anything.
I hope someone can help me with this.

Title: Downloads not possible after root


问:
Safely test rom build
I'm attempting to get into Android Rom development and as such I've compiled CM13 from source for my device (which is not yet fully supported, I've tweaked it so that it ought to work). However, due to the fact that this is my first foray into custom Rom development I have one rather serious issue.

How do I safely test my rom?

I want to be able to flash it to my device (Oneplus Two) using TWRP however, I need to be able to ensure that no permanent damage can be done to my device. How could I do this?

Any help will be appreciated hugely!

Title: Safely test rom build


问:
CM 12.1 Nexus 5 stuck on bootloop and recovery load-up
I've got quite a peculiar problem with my Nexus 5.

Last night, I left my phone on charge. It was working normally and the software was functional etc. However, once I woke up, the phone was constantly restarting itself, and wouldn't load past the boot animation. I tried to load up fastboot to enter the TWRP recovery, however, the phone froze on the load screen. I should also add that my custom boot animation was replaced by the CyanogenMod mascot.

This problem has never occurred before, and I really haven't got a clue how to fix it. I tried to use WugFresh's NRT to flash a factory image of Android 6, however, the command terminal indicated that each process had failed. This did not restore the phone to its original condition.

I should also point out that I have been running a CM 12.1 nightly, which has been very stable and I have been using this nightly, without major problems (bar the infrequent system UI crashes) for a couple of months. It is obviously rooted and I have a Nandroid backup, which I can't access for aforementioned reasons.

Please could you help me with resurrecting my phone? I would be happy to clarify and elaborate upon any point of information.

Kind regards,

Sami


问:
Is it possible to build an OTA update from two system images?
I am impatiently waiting for someone to capture the download link for the Android 6.0.1 OTA update for the Nexus 6 so that I can sideload it, but I've been wondering if it would be possible to build an OTA update by using the version of the ROM that I currently have installed on my phone and a copy of the new version. Can this be done, and if so, how? I have looked at the information on the Android Developer's Website, but I do not understand it at all.</p>


问:
Stuck in Fastboot mode after flashing custom ROM on Xiaomi Mi3W
I flashed MIUI fastboot ROM on Xiaomi Mi3W since I had problem booting it. It was a old ROM but now nothing happens except it is stuck on fastboot mode. It doesn't even charge the battery. I tried re-flashing it but does not work.


问:
Stuck on the 'Android is updating' screen after flashing CM13 on LG G3
I did a wipe, and fresh install of CM 13. I did not install gapps. The phone boots fine but gets stuck on the updating white prompt. Restarting the phone by removing the battery gets it stuck on the boot animation. I believe I have the right modem flashed. What am I doing wrong?</p>


问:
What happen to file we downloaded in bluestack?
I go to bluestack. I download some files some apk.

Then what?

How can I install that apk?

I click an icon that looks like a down arrow and nothing happens


问:
Can App notifications in the notification bar be shown on lock screen (Android 5.1.1)?
Ever since I updated my Galaxy S5 Active to 5.1.1, it has changed so that the small icons in the notifications bar are invisible on the lock screen. (But do still appear once on the home screen.) I've always found this very convenient to see what's happening on my phone. Is this still possible in 5.1.1?</p>


问:
1.5 GB limit on file seek addressing?
I am trying to transfer 5.4 GB file form an android internal memory (Sony Xperia Z2). But it seems that most applications have issues addressing the file beyond cca 1.5 GB. They just can't read the file after that point and end with an error. It applies to e.g. Zarchiver (failed compressing), Wifi File Server (stopped sending), etc.

However some apps can read those, e.g. the video player or some binary readers.

It seems that there might be a limit in standard API and the app needs to use different API for reading big files.

Is there some such limit of 1.5 GB? I have seen the 2 GB limit related to FAT32 + unsigned int, which seems not to be the case as I have files over 2 GB. It's just that most apps can't reach their content beyond those 1.5 GB.

Title: 1.5 GB limit on file seek addressing?


问:
Internal storage - free and occuppied space do not add to total
On Sony Xperia Z2, I have 5.6 GB on /storage/emulated/0, then 2.3 GB in /. However, the whole internal storage has 12 GB, and I can only see under 2 GB of free space.

Where is the remaining 2 GB?


问:
How messenger application saves thumbnails
I'm developing android application. I searched about thumbnails and the way that other messenger application use them. but I don't know how Telegram or WhatsApp  save their thumbnail and where are their thumbnail on my android device. Any suggestion?</p>


问:
Deleted emails in my S4
My S4 is showing that there are 97 emails in my deleted folder but I can't see them. I deleted about 100 others at the same time, but these say they are still in the folder.</p>

Title: Deleted emails in my S4


问:
Is there something like memcheck and fdisk for android?
Basically I want to connect my android asus to my computer and then do fdisk and memcheck.

I suspected that the disk is not perfect and so is the memory. Sometimes it crashes with no reason.


问:
Is there a way to see a log everytime an app crash?
My android phone sometimes quit applications unexpectedly. There is no trace.

I don't see anything wrong. It just quits.

I made a video out of it.

https://www.youtube.com/watch?v=JzAuaIw4RT0

I wonder if there is anyway I can

Check some log when it happens (without rooting because it'll void warranty)

Scan the hard disk of cell phone for errors

Scan memory


问:
How do I view Android application specific cache
I wan't to copy cache files of an application to see what it stores in cache. I've a non-rooted Galaxy Note 4 running android 5.1.1. Is there any way using adb or something else? This application is not built in debug mode. So I can't do this But unlike what that question asks, I'm OK even if there are multiple steps to be done manually. That question asks about dynamically accessing it.</p>


问:
Nexus 5 Android 6.0 Voice dailer keeps popping up when headphones in
A few days ago my phone has begun popping up voice dailer seemingly at random while I have headphones plugged into it.

I have gone into settings and attempted to disable everything I could find related to the voice dailer, but it still pops up.

It seems like I will be listening to music or a podcast, and then all of a sudden what I am listening to will be interrupted by a sound, and the voice dialer comes up.

Since I have shut off all permissions to my mic it now immediately stops and fortunately doesn't tell me to speak the name of who I am calling, but why its interrupting me at all is perplexing to me.

How can I fix this?


问:
Verified boot keystore generateion failure
I need to generate my own keystore for Android Verified Boot. I took these steps

mmma system/extra/verity

keystore_signer private.der verity.x509.pem keystore.img verity.der

And i got this error

```<code>Exception in thread "main" java.lang.IllegalArgumentException: unknown object in getInstance: org.bouncycastle.asn1.ASN1Integer
    at org.bouncycastle.asn1.ASN1Sequence.getInstance(ASN1Sequence.java:98)
    at org.bouncycastle.asn1.x509.AlgorithmIdentifier.getInstance(AlgorithmIdentifier.java:47)
    at org.bouncycastle.asn1.pkcs.PrivateKeyInfo.<init>(PrivateKeyInfo.java:85)
    at org.bouncycastle.asn1.pkcs.PrivateKeyInfo.getInstance(PrivateKeyInfo.java:45)
    at com.android.verity.Utils.loadDERPrivateKey(Utils.java:173)
    at com.android.verity.Utils.loadDERPrivateKeyFromFile(Utils.java:189)
    at com.android.verity.BootKeystore.main(KeystoreSigner.java:203)
</code>```

It seems that keystore_signer failed to load private.der. but i can't find where i did wrong


问:
Flashing of factory image failed Yuphoria
I was flashing the factory image of my YU Yuphoria through the flash-all script, everything completed successfully, but when it came to flashing system partition, the command line got stuck at "writing system" in the last sparse system.

It took a hell lot of time.. In the other sparses of system, writing system took maximum 20-15 secs but this time it took more than 15 minutes and still no luck..

I panicked but couldn't find any other solution.. So I closed the command prompt.. Opened a new command prompt, typed in

```<code>fastboot -i 0x2A96 devices
</code>```

I got:

```<code>????????????    fastboot
</code>```

The ??? made me panic more.. I tried booting into my recovery through fastboot..

```<code>E:\Mobile\adb>fastboot -i 0x2A96 boot twrp.img
downloading 'boot.img'...
FAILED (command write failed (Unknown error))
finished. total time: 5.009s
</code>```

I almost came to the conclusion that my phone is hard-bricked.. I removed the battery, re-inserted it, tried to boot into recovery through the hardware key combination.. But god was kind enough to me, my phone booted into TWRP which was already flashed.. Now I'm still in the recovery but confused what to do.. Shall I flash some custom ROM through the recovery and reboot? Shall I format the system partition? Please suggest something..


问:
Download images to hidden folder
I have created a hidden folder using .FolderName technique in File Manager. How do I make all my downloads from a particular APP in this hidden folder (If at all this is a possibility) ?

Android 4.4.2

Micromax A315 (If this matters)

Title: Download images to hidden folder


问:
Activating Multi User on CM12.1 Android 5.1
I've done the edit to the build.prop

```<code>fw.show_multiuserui=1
fw.max_users=5
</code>```

I've done this on a tablet using CM12.1 (android 5.1) and it hasn't activated Multi User.  Is there anything els that needs doing?

Or maybe there is something that needs doing at build time when the code is compiled?


问:
Does any 4.3+ device with Bluetooth v4.0 support iBeacon (BLE) scanning?

Facts

Bluetooth Low Energy is part of the Bluetooth v4.0 Specification.

Android v4.3+ implements support for BLE Scanning

Question

Does this imply that any device that satisfies the above mentioned points actually mean that the device in practice will allow BLE scanning?

Or this should be stated specifically by the provider itself?

Background story:

I am looking for the cheapest android device to develop an iBeacon app for. It has to function only on that specific device.

I've been looking at the Wiko Sunset 2 which satisfies the two rules, but I haven't found anywhere information about it if it would support BLE Scanning or not.


问:
Deltajen, Opendelta, and xdelta
Does anyone have experience with any delta system? I would like to create delta's of my ROMS I have tried Deltajen and found it does not properly.
I have ROM(A).zip and ROM(B).zip containing system.img and NON-HLOS.bin boot.img etc etc. When I run Deltajen  it gives me a zip file with a blank updater-script. </p>

Title: Deltajen, Opendelta, and xdelta


问:
Bricked Nexus 7, USB Not being recognised at all
My Nexus 7 all of a sudden stopped sending data through usb OTG and i tried to erase cache through TRWP but ended up deleting the OS. Now I am stuck with a device with no OS. I cannot mount the USB for my computer to recognise it so that I can restore it. I tried ADB sideload but it doesnt load and gets stuck on starting...

If I click on Mount, I cannot click on the USB-OTG box. My computer does have the correct drivers for the USB as it used to work on it before but since the OTG stopped responding to data I am now stuck and cannot push a restore image to the device.  I tried different OTG cables, different computers. None of the computers even detect a device as plugged in. Whether I boot into bootloader or recovery I just cannot get the PC to even acknowledge the fact that something is plugged in. As a result I am just not able to flash it at all. I tried NRT with the soft-brick option but that fails too because it says no adb connectivity.

Any help would really be appreciated.


问:
Cannot remove/rename/move build.prop, new insights
I soft-bricked my Huawei G700 running Android 4.2.1 by editing a line in build.prop, specifically this one.

```<code>ro.config.hwtheme=1
</code>```

to

```<code>ro.config.hwtheme=0
</code>```

My phone didn't like that apparently. It supposedly fixes the Xposed framework limited mode bug.

Now, I can boot into recovery and restore my phone to factory reset, but this is not something I'm very willing to do unless everything else fails. In recovery, I'm unable to use ADB to connect to my phone, I can wipe things, reset and apply patches, but that's it.

Now, if I boot my phone and it gets stuck in the boot animation, I can suddenly use adb fine. Hurray right? Just restore build.prop.bak.

Yeah, not. Nothing works.

```<code>chmod 777 build.prop -> Read-only
su chmod 777 build.prop -> nothing happens
su mv build.prop build.prop.back -> nothing happens
su -> nothing happens
su -s -> chainfire information ( from SuperSU )
mount -o remount,rw /system /system -> not permitted
su mount -o remount,rw /system /system -> nothing happens
</code>```

All these commands were run in /system

Can someone help me out with this? I don't want to have to use my last resort.

So, what's changed?

Well, if I boot normally, the phone functions fine in the background as if I didn't enter a PIN code. It requests an IP address from my router and connects fine, but something like web.whatsapp.com won't work.

Volume Down + Power boots into... Fastboot? Well, kinda, not really. It just says two things

```<code>NEW:RISK
OLD:RISK
</code>```

What I found on Google isn't much and it isn't promising. No solutions.

When I boot the device, fastboot does detect the device as an mt6589 with the boot image being secure.

SPFlasher does not work, it fails to detect my device in any mode and will not flash anything.

I tried updating from recovery with a zip file but everything fails. After some googling, it appears to be likely that the zip file has to be signed by Huawei themselves.

I tried installing adbd insecure v2 from Chainfire, but I have NO idea how to enable this from adb. I can't enable this the normal way.

So, here's what I thought. Can't I call the Huawei theme manually from the adb shell? For that, I need someone else who can check this.

If that doesn't work, do you guys have any other ideas?

If none of those work, I could ask for an OEM key and flash another recovery, but that seems like a terrible idea as I have no GUI.

Then there are three things left, sending it to Huawei / dropping it at a local repair shack, neither appeals as they are costly and mean I'll lose my phone for a while.

Or, and that's the thing I really don't want to, buy another phone. I'm content with the phone itself, curiosity merely killed it.

**I think I can't edit it because it's in use, not because I lack access as can be seen here **

Cheered too early.


问:
Moto G device storage randomly gets full
I never had this issue prior to installing CM 12.1 on my Moto G 8GB. But now, every often (like after 5 days of clean install from reset) the storage gets full. After that the device becomes useless, can't install app, can't remove apps, can't view storage options, and etc.

When connecting the phone to a computer I see this :

and folders inside it :

majority of the folders such as Pictures, DCIM, and Downloads are empty.

```<code>android folder is : 1.05MB
com.facebook.orca is: 1KB
tbslog is:75KB
tencent is: 43MB
</code>```

It says 3.85 GB is used, the phone is 8GB and only shows 5.52 GB. I assume Android OS is installed on the missing storage, since I dont have anything why this device gets full so fast?

I only have 5 or 6 other apps (like Gmail, Maps, Chrome and Facebook).

I keep resetting the phone to get the storage back but not sure why is this keep happening. Any suggestions?


问:
how to edit this updateer_script?
I have a custom Rom For Samsung GT-S7582.
When I try to install it through CWM recovery it gives status 7 error.
So I followed this thread To remove status 7 error on XDA

But still it won't install. Can someone help me how to edit this this file.
My file is as follows

```<code>assert(getprop("ro.product.device") == "kyleprods" || getprop("ro.build.product") == "kyleprods" || getprop("ro.product.device") == "S7582" || getprop("ro.build.product") == "S7582" || getprop("ro.product.device") == "GT-S7582" || getprop("ro.build.product") == "GT-S7582" || getprop("ro.product.device") == "hawaii" || getprop("ro.build.product") == "hawaii" || getprop("ro.product.device") == "kylexx" || getprop("ro.build.product") == "kylexx" || abort("This package is for device: kyleprods,S7582,GT-S7582,hawaii,kylexx; this device is "   getprop("ro.product.device")   "."););
ifelse(is_mounted("/system"), unmount("/system"));
package_extract_dir("install", "/tmp/install");
set_metadata_recursive("/tmp/install", "uid", 0, "gid", 0, "dmode", 0755, "fmode", 0644);
set_metadata_recursive("/tmp/install/bin", "uid", 0, "gid", 0, "dmode", 0755, "fmode", 0755);
mount("ext4", "EMMC", "/dev/block/platform/sdhci.1/by-name/system", "/system", "");
run_program("/tmp/install/bin/backuptool.sh", "backup");
unmount("/system");
if is_mounted("/data") then
package_extract_file("META-INF/org/cyanogenmod/releasekey", "/tmp/releasekey");
run_program("/tmp/install/bin/otasigcheck.sh") != "31744" || abort("Can't install this package on top of incompatible data. Please try another package or run a factory reset");
else
mount("ext4", "EMMC", "/dev/block/platform/sdhci.1/by-name/userdata", "/data", "");
package_extract_file("META-INF/org/cyanogenmod/releasekey", "/tmp/releasekey");
run_program("/tmp/install/bin/otasigcheck.sh") != "31744" || abort("Can't install this package on top of incompatible data. Please try another package or run a factory reset");
unmount("/data");
endif;
show_progress(0.750000, 0);
ui_print("Patching system image unconditionally...");
block_image_update("/dev/block/platform/sdhci.1/by-name/system", package_extract_file("system.transfer.list"), "system.new.dat", "system.patch.dat");
show_progress(0.020000, 10);
mount("ext4", "EMMC", "/dev/block/platform/sdhci.1/by-name/system", "/system", "");
run_program("/tmp/install/bin/backuptool.sh", "restore");
unmount("/system");
show_progress(0.050000, 5);
package_extract_file("boot.img", "/dev/block/platform/sdhci.1/by-name/KERNEL");
show_progress(0.200000, 10);
</code>```

Title: how to edit this updateer_script?


问:
How to change the boot logo, Not the bootanimation 4.2.2
Im trying to find out if I can change the boot logo, the one that shows up right before the bootanimation. Currently it show's me a linux logo.

I am looking to either completely remove it or change it to something else, but I can not find any information related to this, all that comes up is the animation, which I honestly couldn't care less about.

So to summarize it, Can I change/remove the boot logo? If so, how?


问:
Cannot screen mirror youtube to TV
I am using a Samsung Galaxy Tab 3 10.1 with Android 4.4.2 and a Samsung UE48H6270SS.

I can screen mirror my Music and also Media using the Samsung Smart View App but I can't do it with YouTube. There is an option in the YouTube-settings to "pair" a device with a TV, but that requires the TV to install the YouTube-App on the TV which I don't want to install. (Or anything else related to SmartTV). Is there any alternative to the YouTube app or another solution?

Title: Cannot screen mirror youtube to TV


问:
How do I set a device password longer than seventeen characters?
The stock-Android device security settings restrict the length of passwords (and PINs) to seventeen characters. When I first got my device, I worked around this by using Android Device Manager to lock it. Now, I'd like to change the password, but the device itself still refuses to set anything exceeding that limit, and ADM just uses the existing password (despite prompting me for a new one). What's another way to bypass this limit, without disabling disk encryption as a side effect?</p>


问:
Lock location services (off) on android 5.1.1
Is there a way to lock location services (keep it off) on android 5.1.1? Like with restrictions on iphone for example. I'm looking for a simple way to do this. A way to disable it permanently is also fine. Thanks </p>

OwnerDisplayName: minusatwelfth


问:
Samsung Galaxy Tab 2 7.0 not powering on and unable to do factory reset
What happened is my tablet froze. I tried to restart the tablet by holding the power button, however it stayed on the Samsung screen and did not proceed to the home screen. Eventually I was able to turn off the device.

I want to factory reset the device now. However the options to factory reset are not showing. I press and hold volume up together with the power button, nothing happened. What else can I do to hard reset the device?


问:
how to set two different passwords for screen lock and factory reset
I want to set up my android phone such that it should not have any screen lock but it should ask for a password when i try to factory reset it.

I have tried so many websites for this trick but could not find any solution yet.


问:
Accessing messages from android device with broken screen
I have an AG Chrome android phone. The screen is broken, I called the company, they cant help me as they do not make spares for the phone. I have important messages on the phone I need. The phone still comes on but I just cant use it because its a touch screen which is now unresponsive. Can anyone please help?
I tried most if not all suggestions on these pages without success. Im on windows xp?  Please.</p>


问:
File auditing with Tasker
Sometimes I find in sdcard files and directories for which I can't guess the app that created them (and I know they are not the default files created by the system). And even if they take up only little space, I would like to delete useless files to keep my phone clean and browse the sdcard more easily. So I want to set up Tasker to do the following:

constantly perform file auditing,

when a package is removed ask if I want to remove the files created by that application (this part I know how to achieve).

My question is: how can I set up Tasker to perform file auditing (if this is possible)?

Note: I tried some cleaning tools (e.g. Clean Master) that do this, but I want to implement it myself with Tasker, as they are mostly bloatware.

Title: File auditing with Tasker


问:
Modification of `playlpm` file causes shutdown instead of rebooting
Modification of playlpm file causes shutdown instead of rebooting my Samsung Galaxy S4 Mini I9192.

Updated  playlpm reboots the phone after typing the terminal command "playlpm" when Android OS is completely loaded.

But the same  playlpm file behaves strange when S4 Mini is off. S4 Mini shows the battery icon without animation when it realizes that a charger is connected. After that it gives control to playlpm as expected, but in this case playlpm shuts the phone down. Seconds later the phone realizes that it's powered up, shows the static battery icon and the cycle repeats. The cycle ends if I disconnect the charger. The phone goes off.

Is there any option of "reboot" or "shutdown" command that forces sleeping S4 Mini to load Android when powered up, not to shutdown?

Note: /system is write-protected in Galaxy S4 Mini and needs to be remount to save something on it.  Used command: mount -o remount,rw /system


问:
How to stop Zygote crashing, android tablet caught in boot loop
Using tablet as a front panel kiosk.  Was runnning fine for weeks. Now its stuck on the boot splash screen.  Seems zygote is crashing. This error in logcat repeats.  Any thoughts?</p>

```<code>I/AudioFlinger(  471): Loaded primary audio interface from sunxi audio HW HAL (audio)
I/AudioFlinger(  471): Using 'sunxi audio HW HAL' (audio.primary) as the primary audio interface
I/CameraService(  471): CameraService started (pid=471)
E/CCameraConfig(  471): ------------------------device ID
E/CCameraConfig(  471): camera device id 0
E/CCameraConfig(  471): ------------------------device ID
E/CCameraConfig(  471): camera device id 0
I/AudioFlinger(  471): AudioFlinger's thread 0x14b22b8 ready to run
W/AudioFlinger(  471): Thread AudioOut_1 cannot connect to the power manager service
I/AudioPolicyService(  471): Loaded audio policy from LEGACY Audio Policy HAL (audio_policy)
D/AndroidRuntime(  504):
D/AndroidRuntime(  504): >>>>>> AndroidRuntime START com.android.internal.os.ZygoteInit <<<<<<
D/AndroidRuntime(  504): CheckJNI is OFF
F/libc    (  504): Fatal signal 11 (SIGSEGV) at 0x40496765 (code=2)
I/DEBUG   (   82): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
I/DEBUG   (   82): Build fingerprint: 'softwinners/nuclear_evb/nuclear-evb:4.0.4/IMM76D/20130606:eng/test-keys'
I/DEBUG   (   82): pid: 504, tid: 504  >>> zygote <<<
I/DEBUG   (   82): signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 40496765
I/DEBUG   (   82):  r0 01381754  r1 4053e220  r2 00000000  r3 44ef4040
I/DEBUG   (   82):  r4 01381754  r5 bef7bf94  r6 ffffffff  r7 404966e9
I/DEBUG   (   82):  r8 00000001  r9 bef7b9f8  10 00000000  fp bef7bfcc
I/DEBUG   (   82):  ip fffffef8  sp bef7b9e8  lr 404996c1  pc 40498eca  cpsr 40000030
I/DEBUG   (   82):  d0  44eb912844eb90b0  d1  44eb919844eb9192
I/DEBUG   (   82):  d2  44eb920844eb91eb  d3  44eb927844eb9244
I/DEBUG   (   82):  d4  44ef78d844ef78a0  d5  44ef794844ef7910
I/DEBUG   (   82):  d6  44ef79b844ef7980  d7  44ef7a2844ef79f0
I/DEBUG   (   82):  d8  0000000000000000  d9  0000000000000000
I/DEBUG   (   82):  d10 0000000000000000  d11 0000000000000000
I/DEBUG   (   82):  d12 0000000000000000  d13 0000000000000000
I/DEBUG   (   82):  d14 0000000000000000  d15 0000000000000000
I/DEBUG   (   82):  d16 0000000000000000  d17 3f50624dd2f1a9fc
I/DEBUG   (   82):  d18 41c83605ea000000  d19 0000000000000000
I/DEBUG   (   82):  d20 0000000000000000  d21 0000000000000000
I/DEBUG   (   82):  d22 0000000000000000  d23 0000000000000000
I/DEBUG   (   82):  d24 0000000000000000  d25 0000000000000000
I/DEBUG   (   82):  d26 0000000000000000  d27 0000000000000000
I/DEBUG   (   82):  d28 0000000000000000  d29 0000000000000000
I/DEBUG   (   82):  d30 0000000000000000  d31 0000000000000000
I/DEBUG   (   82):  scr 60000010
I/DEBUG   (   82):
I/DEBUG   (   82):          #00  pc 0004ceca  /system/lib/libicuuc.so (_ZN6icu_4610UnicodeSet12applyPatternERNS_21RuleCharacterIteratorEPKNS_11SymbolTableERNS_13UnicodeStringEjR10UErrorCode)
I/DEBUG   (   82):          #01  pc 00075792  /system/lib/libdvm.so (_Z12dvmLinkClassP11ClassObject)
I/DEBUG   (   82):
I/DEBUG   (   82): code around pc:
I/DEBUG   (   82): 40498ea8 767ee5bb ccf4e215 2b3c6a21 57a69de5  ..~v....!j<+...W
I/DEBUG   (   82): 40498eb8 2ebada11 dd7f45f9 7575e71f d4faceca  .....E....uu....
I/DEBUG   (   82): 40498ec8 67fd9b3e b83d3fd5 86609cd0 e8e40229  >..g.?=...`.)...
I/DEBUG   (   82): 40498ed8 91e52e02 4e6fef92 55501d54 2de73e7d  ......oNT.PU}>.-
I/DEBUG   (   82): 40498ee8 f8429d51 38ef6cac 83245f41 4ccc3113  Q.B..l.8A_$..1.L
I/DEBUG   (   82):
I/DEBUG   (   82): code around lr:
I/DEBUG   (   82): 404996a0 9903ffcd 46334652 f7f04638 4620f901  ....RF3F8F.... F
I/DEBUG   (   82): 404996b0 46524639 f8cd464b 95018000 fc02f7ff  9FRFKF..........
I/DEBUG   (   82): 404996c0 28006828 4648dd03 fe22f001 9910e7d8  (h.(..HF..".....
I/DEBUG   (   82): 404996d0 f240b129 f2c00302 602b0301 4620e7f3  ).@.......+`.. F
I/DEBUG   (   82): 404996e0 f7fc4649 e7eeffa9 41f0e92d 4690b086  IF......-..A...F
I/DEBUG   (   82):
I/DEBUG   (   82): memory map around addr 40496765:
I/DEBUG   (   82): 40446000-4044c000 /system/lib/libicui18n.so
I/DEBUG   (   82): 4044c000-40538000 /system/lib/libicuuc.so
I/DEBUG   (   82): 40538000-40542000 /system/lib/libicuuc.so
I/DEBUG   (   82):
I/DEBUG   (   82): stack:
I/DEBUG   (   82):     bef7b9a8  00000001
I/DEBUG   (   82):     bef7b9ac  4088f795  /system/lib/libdvm.so
I/DEBUG   (   82):     bef7b9b0  00000000
I/DEBUG   (   82):     bef7b9b4  00000001
I/DEBUG   (   82):     bef7b9b8  40a07018  /dev/ashmem/dalvik-heap (deleted)
I/DEBUG   (   82):     bef7b9bc  000000a0
I/DEBUG   (   82):     bef7b9c0  40a172b8  /dev/ashmem/dalvik-heap (deleted)
I/DEBUG   (   82):     bef7b9c4  408ccf90  /system/lib/libdvm.so
I/DEBUG   (   82):     bef7b9c8  0137cb5c  [heap]
I/DEBUG   (   82):     bef7b9cc  40a172b8  /dev/ashmem/dalvik-heap (deleted)
I/DEBUG   (   82):     bef7b9d0  01381090  [heap]
I/DEBUG   (   82):     bef7b9d4  0137c7f0  [heap]
I/DEBUG   (   82):     bef7b9d8  01381754  [heap]
I/DEBUG   (   82):     bef7b9dc  bef7bf94  [stack]
I/DEBUG   (   82):     bef7b9e0  df0027ad
I/DEBUG   (   82):     bef7b9e4  00000000
I/DEBUG   (   82): #00 bef7b9e8  00000001
I/DEBUG   (   82):     bef7b9ec  bef7bf94  [stack]
I/DEBUG   (   82):     bef7b9f0  458996ae  /data/dalvik-cache/system@framework@core.jar@classes.dex
I/DEBUG   (   82):     bef7b9f4  bef7bca4  [stack]
I/DEBUG   (   82):     bef7b9f8  4053eb50  /system/lib/libicuuc.so
I/DEBUG   (   82):     bef7b9fc  00000200
I/DEBUG   (   82):     bef7ba00  bef7bca4  [stack]
I/DEBUG   (   82):     bef7ba04  400b6474
I/DEBUG   (   82):     bef7ba08  458996ae  /data/dalvik-cache/system@framework@core.jar@classes.dex
I/DEBUG   (   82):     bef7ba0c  40082a4d  /system/lib/libc.so
I/DEBUG   (   82):     bef7ba10  0000004b
I/DEBUG   (   82):     bef7ba14  01401578  [heap]
I/DEBUG   (   82):     bef7ba18  00000001
I/DEBUG   (   82):     bef7ba1c  bef7bca4  [stack]
I/DEBUG   (   82):     bef7ba20  bef7ba58  [stack]
I/DEBUG   (   82):     bef7ba24  00000000
I/DEBUG   (   82):     bef7ba28  00000000
I/DEBUG   (   82):     bef7ba2c  00000000
I/DEBUG   (   82):     bef7ba30  bef7ba58  [stack]
I/DEBUG   (   82):     bef7ba34  bef7bf94  [stack]
I/DEBUG   (   82):     bef7ba38  01381754  [heap]
I/DEBUG   (   82):     bef7ba3c  bef7bca4  [stack]
I/DEBUG   (   82):     bef7ba40  00000001
I/DEBUG   (   82):     bef7ba44  00000000
I/DEBUG   (   82):     bef7ba48  458996ae  /data/dalvik-cache/system@framework@core.jar@classes.dex
I/DEBUG   (   82):     bef7ba4c  4049973b  /system/lib/libicuuc.so
I/DEBUG   (   82):     bef7ba50  00000000
I/DEBUG   (   82):     bef7ba54  bef7bf94  [stack]
I/DEBUG   (   82):     bef7ba58  4053e220  /system/lib/libicuuc.so
I/DEBUG   (   82):     bef7ba5c  00000000
I/DEBUG   (   82):     bef7ba60  ffffffff
I/DEBUG   (   82):     bef7ba64  404966e9  /system/lib/libicuuc.so
I/DEBUG   (   82):     bef7ba68  01381754  [heap]
I/DEBUG   (   82):     bef7ba6c  00000000
I/DEBUG   (   82):     bef7ba70  bef7bca4  [stack]
I/DEBUG   (   82):     bef7ba74  bef7bf94  [stack]
I/DEBUG   (   82):     bef7ba78  bef7bca4  [stack]
I/DEBUG   (   82):     bef7ba7c  4049987d  /system/lib/libicuuc.so
I/DEBUG   (   82):     bef7ba80  bef7bf94  [stack]
I/DEBUG   (   82):     bef7ba84  404b7d2b  /system/lib/libicuuc.so
I/DEBUG   (   82):     bef7ba88  01381378  [heap]
I/DEBUG   (   82):     bef7ba8c  01381378  [heap]
I/DEBUG   (   82):     bef7ba90  013813ac  [heap]
I/DEBUG   (   82):     bef7ba94  0138154c  [heap]
I/DEBUG   (   82):     bef7ba98  bef7bf94  [stack]
I/DEBUG   (   82):     bef7ba9c  403c6e77  /system/lib/libicui18n.so
I/DEBUG   (   82):     bef7baa0  01386260  [heap]
I/DEBUG   (   82):     bef7baa4  00000004
I/DEBUG   (   82):     bef7baa8  013810b8  [heap]
I/DEBUG   (   82):     bef7baac  013810c8  [heap]
I/DEBUG   (   82):     bef7bab0  000006e8
I/DEBUG   (   82):     bef7bab4  400b6474
I/DEBUG   (   82):     bef7bab8  013810c0  [heap]
I/DEBUG   (   82):     bef7babc  00000014
I/DEBUG   (   82):     bef7bac0  44ef4040  /dev/ashmem/dalvik-LinearAlloc (deleted)
I/DEBUG   (   82):     bef7bac4  400838b1  /system/lib/libc.so
I/DEBUG   (   82):     bef7bac8  00000001
I/DEBUG   (   82):     bef7bacc  00000001
I/DEBUG   (   82):     bef7bad0  00000000
I/DEBUG   (   82):     bef7bad4  00000001
I/DEBUG   (   82):     bef7bad8  00000000
I/DEBUG   (   82):     bef7badc  00000014
I/DEBUG   (   82):     bef7bae0  44ef4040  /dev/ashmem/dalvik-LinearAlloc (deleted)
I/DEBUG   (   82):     bef7bae4  40083f13  /system/lib/libc.so
I/DEBUG   (   82):     bef7bae8  00000001
I/DEBUG   (   82):     bef7baec  4088f795  /system/lib/libdvm.so
I/DEBUG   (   82): #01 bef7baf0  40a0f520  /dev/ashmem/dalvik-heap (deleted)
I/DEBUG   (   82):     bef7baf4  408ae99c  /system/lib/libdvm.so
I/DEBUG   (   82):     bef7baf8  40a07018  /dev/ashmem/dalvik-heap (deleted)
I/DEBUG   (   82):     bef7bafc  0137c7f0  [heap]
I/DEBUG   (   82):     bef7bb00  408ccf90  /system/lib/libdvm.so
I/DEBUG   (   82):     bef7bb04  bef7bb28  [stack]
I/DEBUG   (   82):     bef7bb08  44ed6c40  /dev/ashmem/dalvik-LinearAlloc (deleted)
I/DEBUG   (   82):     bef7bb0c  bef7bb6c  [stack]
I/DEBUG   (   82):     bef7bb10  00000000
I/DEBUG   (   82):     bef7bb14  00000000
I/DEBUG   (   82):     bef7bb18  bef7bbf0  [stack]
I/DEBUG   (   82):     bef7bb1c  4084e20c  /system/lib/libdvm.so
I/DEBUG   (   82):     bef7bb20  bef7bb2c  [stack]
I/DEBUG   (   82):     bef7bb24  00000000
I/DEBUG   (   82):     bef7bb28  00000000
I/DEBUG   (   82):     bef7bb2c  00000000
I/DEBUG   (   82):     bef7bb30  00000000
I/DEBUG   (   82):     bef7bb34  00000000
I/ServiceManager(   79): service 'media.audio_policy' died
I/ServiceManager(   79): service 'media.audio_flinger' died
I/ServiceManager(   79): service 'media.player' died
I/ServiceManager(   79): service 'media.camera' died
I/Netd    (  506): Netd 1.0 starting
I/        (  505): ServiceManager: 0x1b9a958
I/AudioFlinger(  505): Loaded primary audio interface from sunxi audio HW HAL (audio)
I/AudioFlinger(  505): Using 'sunxi audio HW HAL' (audio.primary) as the primary audio interface
I/CameraService(  505): CameraService started (pid=505)
E/CCameraConfig(  505): ------------------------device ID
E/CCameraConfig(  505): camera device id 0
E/CCameraConfig(  505): ------------------------device ID
E/CCameraConfig(  505): camera device id 0
</code>```


问:
Sony Xperia Z1 will not boot up
A month ago, i used Kingroot to root my Sony Xperia Z1 running lollipop . Today, my dad called me on the phone and i picked up. 5 minutes later, the phone will not boot up. I thought that the battery is dead and tried to charge the phone using the original wall plug.

The phone will not charge or boot up. It will show red blinking on my phone. I highly doubt that my phone has no battery at all because it is 40% when i last used it to call my dad.

Also i have tried to power on the phone by pressing the on and power down/up button but it does not work. I have tried to reset the phone by pressing the small red button at the micro sim slot but is also does not work.

I have also tried to use the Sony PC Companion but it does not detect my phone after i have download the installation for the update. I have also tried using Emma but it did not detect my phone at all.

Now what i know is that my warranty is void because i rooted my phone and they are going to charge me to fix it. And before i send it down to repair, i would like to know what else can i do to boot up my phone.

Thank You

Jun Run

Title: Sony Xperia Z1 will not boot up


问:
Why are my replies to a group text appearing multiple times?
It used to be that when I would reply to a group text, my reply would only show up once. Now all of the sudden when I reply, my reply shows up multiple times. If 5 people are on this group text, my reply shows 5 times. I can't figure out how to stop doing that.</p>


问:
Android 6 sdcard as internal storage after reinstall
If you use your sdcard as internal storage on Android 6, is there any way to store backups on the sdcard so you can access them after reinstalling? </p>


问:
Can't find my phone... Really..!
So this is the situation: three days ago I was looking for my galaxy s3 and couldn't find it. It's an extra phone, so don't use it much. So I asked device manager, and it reported it online several days ago, but gave me a location at my address. I sent a ring signal but nowhere was any sound to be heard. The app said "ringing" so it must have communicated with the phone. Since then it reported my phone unavailable and available intermittently.  I have called the phone and it rings silently before switching to the answering machine, so I conclude, that it's on and probably in a charger somewhere. It doesn't run several days without charge, I figure.

Checking all outlets in the house and outside, I can't find a charger plugged in.

I even checked my Google play to see if there might be installed some kind of gps faker. No there isn't.

Also...  six days ago my location history reported the phone to be travelling by train 120 miles away and being there for almost a day before suddenly returning back to my house.

I'm puzzled, to say the least. Are there any tools to help me? Or what might be going on?

Title: Can't find my phone... Really..!


问:
If you "buy" an app in the Amazon Underground, and it is later removed from the Underground, do you get to keep it?
If you aren't familiar, the Amazon Underground offers a bunch of apps for free (including IAPs).  The downsides are user tracking, pop-over ads, and the possibility of the app not working if there is no internet connection.

Once a person "buys" an app in the Amazon Underground, it is listed in the associated Amazon account.  (I put "buys" in parenthesis because there is no charge.)

If the app is later removed from the Amazon Underground, does the "buyer" get to keep it?


问:
How to show an image in notification which is coming from an app server using google cloud messaging in android
Link of image is coming from an app server but image is not shown on app in notification. How to resolve this problem? Please help me</p>


问:
How to view bargain sales on Play Store ordered by discount or category
Before this is marked as duplicate, here are related questions but NOT dealing with this question

Is there a way to sort apps in Google's app store by size?

Is there a way to sort apps by popularity (number of 'downloads') in the Google Play Store, or otherwise?

I prefer to manually update play store apps periodically. Yesterday, while doing this, I found a couple of apps which were purchased about a year ago at steep discounts, in one case a $9 app is now priced at $5 and in another $2 app priced at 20 cents.

This set me searching for more discounted apps on Play Store, which are not listed separately as discounted but included in "Top Paid". Further, there is no way of filtering discounted apps, or by discount percentage

Couldn't locate any app to do this and further search led me to this What are the alternative Android app markets? to see if any other app could do this.

Appbrain App Store seemed most promising and it delivered better results, but partly. It shows discounted apps separately when you filter by Price Reduced, (which is a huge improvement on PS) and assigns rankings (not related to discounts). But it doesn't give filtering choices to go by "categories" or "discount amounts", which means if I am looking for a key board app bargain as an example, I still have to trawl through all screens manually or if I am bargain hunting and want to buy an app based on discount compared to original price, I can't

Question

Is there a way to view discounted apps by discount percentage or category in either Google Play Store or in alternative app markets and  preferrably  purchase through existing credentials on Play Store?


问:
How log logcat in a bootloop?
I have a Pipo X8 device, and I want to log logcat output because it gets stuck in a bootloop when I try to install Xposed framework.

The problem is that there is no USB, thus no USB-debugging, and Ethernet hasn't got time to start up before bootloop restarts. Hence, I can't trigger the logcat command. How can I log? Can I do a script that runs att startup and logs to file? How would i make such a script?

I believe making an app with BootBroadcastReceiver is far too late in the startup chain.

Title: How log logcat in a bootloop?


问:
Where is stored type lock (if users have to enter a password/SIMM or a pattern)?
I'm working on source code of Lollipop. It seems the type lock (if users have to enter a password/SIMM or a pattern) is stored in a database, /data/system/locksettings.db. This database is located in /data but /data is encrypted before the user types the password. So I think it may be stored in another place.

In CryptKeeperConfirm.java, there is this comment:

```<code>  /* WARNING - nasty hack!
               Settings for the lock screen are not available to the crypto
               screen (CryptKeeper) at boot. We duplicate the ones that
               CryptKeeper needs to the crypto key/value store when they are
               modified (see LockPatternUtils).
               However, prior to encryption, the crypto key/value store is not
               persisted across reboots, thus modified settings are lost to
               CryptKeeper.
               In order to make sure CryptKeeper had the correct settings after
               first encrypting, we thus need to rewrite them, which ensures the
               crypto key/value store is up to date. On encryption, this store
               is then persisted, and the settings will be there on future
               reboots.
             */
</code>```

That leads me to believe that the settings for lock screen (including type lock) are stored in 2 places. Does anyone know what other places lock screen settings and type lock may be stored?


问:
Make Hangout ring rather than the phone ring for incoming calls
I have a lousy mobile service with weak signals. When I use wifi, I want to use Google Hangout to receive incoming calls.

I have associated the phone's number with my Google Voice number.

At first, I forwarded incoming calls to my GV to my phone (by checking the box before my associated phone number in GV settings), but then my phone's Phone app always hijack the incoming calls (I don't know if that is because I set up something on my phone), and I can't answer the calls using Hangout.

Then I stopped forwarding incoming calls to my GV to my phone (by unchecking the box before my phone number in GV settings), but then Hangout doesn't ring for incoming calls.

My phone is Kyocera Hydro Icon with Android 4.4.2.


问:
Safely buy a used mobile
Is there any step I need to take after buying a used Android phone from a stranger?

Is restoring the device to defaults enough?

The hardware should be fine; I'm talking more about the OS itself and software issues (viruses and so on)

Title: Safely buy a used mobile


问:
How to view a plain text file created in Linux in Drive app?
I created a small plain text file (in utf-8 encoding) in Ubuntu and then uploaded to Drive.In my Android phone, I open Drive app, and want to view the text file, but it says "No preview available" and asks me to download it. How can I preview the text file without downloading it?</p>


问:
Bluetooth dual pairing. Mic and speakers. App?
I would like to run a https://www.headwave.de/
speaker on my motorbike helmet and a separate Bluetooth mic.
The speaker is only for music but will play phone call audio.

The question is: Is there an app that will let me separate the in and out channels within Bluetooth so I can connect two individual Bluetooth devices at the same time?

I am using an HTC1 android.
They have it on the turtle beach headsets for PlayStation and Xbox.


问:
Realistic preparations to be made beforehand to locate the device and/or ascertain identity of its holder?
What can and should be done beforehand as a precautionary measure to locate the device or ascertain the identity of its holder, should a person unknowingly lose his/her device for any reason?

I am thinking of ways which provides features, such as:

keeping camera turned on nonstop upload data as much as possible to possibly capture holder's face and location along the way, or

perhaps prevent the phone from being turned off and create a loud sound "THIEFS" in the middle of crowded bus

If the solutions requires app, I would prefer such apps which can't be turned off.

Also, perhaps something we can put on our keychain that will cry out loud if the distance between the Android device and the keychain is above 1 meter.


问:
Can I link between android devices

Possible Duplicate:

  2.1 as a secure access point?

I use huawei 8600 phone android 2.1 to use internet for cdma 800 evdo network.
I want to use glaxy tab 7" for internet using with wifi linking together.

Title: Can I link between android devices


问:
How to export emails from android stock email?
I need to get around 7000 emails off an Sony Xperia with Lollipop (5.1.1) that which has stock android email 8.0. Not worried about the format, just need to import them to a desktop client such as Thunderbird or Outlook.

The emails were from pop3 account.


问:
TWRP: "E: Unable to mount storage" after encrypting phone
I get E: Unable to mount storage error in TWRP after encrypting my phone. CyanogenMod 12.1 ROM (based on Android 5.1.1, my phone is HTC One M7) in use, CM uses AOSP encryption that is supported by TWRP. TWRP doesn't work properly, I wasn't able to flash a script that used to work perfectly (no error, but flashing didn't do anything).

Should I do a wipe in TWRP? I already tried wiping the system and reinstalling ROM, no success. What partitions should I exactly wipe?

EDIT: I tested more and it seems that I can update my ROM and install the Xposed framework, but running scripts like freecyngn doesn't seem to work.

TWRP version 2.8.7.0


问:
Data usage, random number apps
What are these numbers in the Data Usage and Battery Usage screen in Jellybean?

I'm having a issue with apps turning up that use data in the background. I have no idea what the are or where they came from. I have factory reset my phone several times. The phone is a ZTE from straight talk. The link above shows what the apps look like only my numbers are 12437, 12984, 19154. Before I reset my phone there where a lot more of them. About 15. Is there anyway to get rid of them? Are they harmful to my phone? The phone is not rooted. And since the last reset u have uninstalled nothing. Can anyone help? Edit They also seem to be heating up and slowing down my phone due to the fact that so many are running in the back round

Edit the numbers continue to grow.
Edit in now have about 15 is there anything I can do can anyone help or am I just screwed?

Title: Data usage, random number apps


问:
Default Ringtone automatically resetting to "Silent"
I use a Samsung Galaxy Note 3 (with Android 4.4.2), which was working fine.

Recently, the device started resetting the default ringtone to "Silent", no matter whatever ringtone is set to. Because of this, when somebody calls, we cannot hear the ring (but can see the incoming call details on the screen).

I have reset the ringtone of most of my contacts to something other than default. But this is an issue when somebody who is not in my contact list calls.

Any idea why this is happening ? Any help will be greatly appreciated.


问:
Android internal storage is showing less than actual size
I have a Samsung Galaxy Grand GT-I9082. The phone has 8GB internal storage.

If I go to Setting → Storage, I see that

the total storage is 8 GB and

the available storage is 14 MB.

I have reset my phone (hard reset and wipe), but the available storage hasn't changed! What's the problem?


问:
How to make things go through Media channel?
So, with my Galaxy s3 (version 4.4.2), I have a Life Proof case. It distorts my sound, but only my calls. Anything going through the media channel is fine, so I can listen to music or tv shows with no problem. Is there a way I can make my calls use a different sound channel so they don't get distorted? If not, is there a reason why the media channel isn't distorted but the calls are?</p>


问:
Can I use a Bluetooth Lavalier Mic while recording video?
I want to use a wireless Bluetooth Lavalier mic (Like this) while recording a video. I'm open to any configuration or app to get this done.  I have a Galaxy Note 5, is there a way to get a Bluetooth (or any kind of wireless) mic that will record with the video so there is no sync issues?</p>


问:
Free up phone storage Android 5.1 Moto G
I have a Moto G (1st generation) running Android 5.1. Recently, when I put my apps on update the phone refused saying that it had 'insufficient storage'. The DiskUsage app shows that there 9980MB of system data. What exactly is it? How do I free that memory?

Here is a screenshot of other memory usage:

Here is the output of df on my android device:


问:
Problem adding user profiles on asus zenpad z380 lollipop 5.0.2
I just bought an Asus Zenpad Z380, running on lollipop 5.0.2. I wanted to add another user/profile- but can't find the function anywhere. From what I read after I googled the question- one should be simply able to swipe down and there should be users and below that- a + sign to add more, only except that there isn't (for me, at least). I get only the one(main) user profile. tapping on it leads me to the profile itself on the contact list, and that's it!

My husband ran the setting up process (It's supposed to be a joint tablet). Could it be that he "took a wrong turn"- A.K.A missed something during the process, or is this a known (and hopefully fixable) problem?


问:
How can I control the permissions an app has if I am on a rooted android?
Some apps ask for a ridiculous amount of permissions. Android tends to be you accept all the permissions and use the app or you don't accept all and don't use the app. This is different from how IOS handles permissions. For IOS, you can selectively allow permissions like location, notifications, photos, bluetooth, camera, etc. How can I do this on android. I don't care if it breaks certain apps. Sometimes their is a descent app that just ask for an overwhelming amount of permissions.

Any ideas? Android 5.1.1! No custom ROM. Don't have xposed? But I can install it if I need too.


问:
How to display/obtain detailed app data usage of last 24h?
I know Android has a nice built-in way to visualize the monthly data usage on a daily basis. It also displays the cumulative data transfered data per app per cycle (1 month).

Where are the data usage numbers stored internally? And how detailed are they? More specifically, I am trying to figure out which app consumed data in the last X hours (or between timestamp A and timestamp B). Something ate up all remaining prepaid data last night (oddly while I was on WiFi and with background data restricted).


问:
How can we install the root package through stock recovery in android, even though it is not signed
I've read that for some signature verification and signing reasons in android, The stock recovery doesn't allow us to install a custom rom directly using "Update from SD Card". And so we need to have a custom recovery installed so that no signature problems occur.

My question is that while rooting and installing a custom recovery we install a "update.zip package" from our stock recovery mode. So doesn't any signature verification occur over there?

How does the stock recovery allow installation of unsigned root and custom recovery packages but doesn't allow installation of custom rom directly?

OwnerDisplayName: Shivam aggarwal


问:
Google Now integration with Ford
I am attempting to get my Android Phone (not Google Auto) to cooperate more with my Ford.

At the moment, I can use the phone to connect by Bluetooth to play music, do voice calls and the usual things. I would however, like to be able to hands-free (or using the steering wheel button to) tell my phone to do something whilst I am driving.

For example, if I am navigating. I might like to know when I will reach my destination.

Typically, what will happen is my phone is in my pocket with the screen off. So it cannot hear me say OK Google. However, even if I leave my phone somewhere secure with the screen on, it is torturous to get it to respond to OK Google. I am assuming that the OK Google system is not listening passively through the Bluetooth system.

Ideally, I would like Google Now to be activated with the voice button on the steering wheel. However, OK Google would be great too.

My phone:

Nexus 5

Android Marshmallow 6.0.1

Stock OTA Rom

My car:

Ford Galaxy

Cannot find version of the Ford computer

Title: Google Now integration with Ford


问:
busybox doesn't work on marshmallow
The system builtin ip command works correctly with:

```<code># ip route show table wlan0
xxx.xxx.xxx.xxx/xx dev wlan0  proto static  scope link
</code>```

But busybox ip doesn't:

```<code># busybox ip route show table wlan0
ip: invalid argument 'wlan0' to 'table'
</code>```

Looks like busybox failed to read some system settings.

So what's wrong here?

When tried to uninstall, the Busybox Free app froze. Is it safe to manually remove busybox and its symlinks in adb shell?

Title: busybox doesn't work on marshmallow


问:
"Apk Installation failed: ANDROID_BOOT_FAILURE" when installing an APK
I am trying to install Google Play Store 6.0.5 on my PC through BlueStacks APK handler. It shows "Installing APK", but after sometime it shows

Apk installation failed: ANDROID_BOOT_FAILURE

How can I solve this problem?


问:
Can't set screen lock to other than 'Slide'
I can't switch the screen lock mode to anything other than 'Slide'. Other options (None, PIN, Password, Pattern, Face) are available, but after setting up any of them the label with the selected option keeps showing 'Slide', and indeed nothing changes in the lock screen.

My device is a Xperia SP (C5303). I'm running a stock ROM (12.1.A.1.205) with Android 4.3 which I recently flashed; previously I was running CyanogenMod with KitKat. I didn't wipe user data when flashing.

Looking for solutions to similar problems, I have already tried disabling device administrators; and I couldn't try "Clear credentials" since it was greyed out. Clearing the data for the Xperia Screen Lock app (com.sonyericsson.lockscreen.uxpnxt) doesn't make any difference.

Anything else I could try before wiping all user data?


问:
Forced into roaming
I have a HTC One M7 that I use on Sprint. My issue is that I am forced to have my phone in roam mode for it to function. I currently have Automatic selected because in Home only mode I have no communications at all. The phone is rooted and also s-off.

Thanks in advance for any help someone can give me.

Title: Forced into roaming


问:
Difference in partition size
I have 32 GB sd card with two partitions. First is FAT partition has size 29 GB, second is ext4, nearly 3 GB (counted by Linux computer). But Android is showing that:

```<code>root@htc_a51ul:/storage/ext_sd # fdisk -l /dev/block/mmcblk1

Disk /dev/block/mmcblk1: 31.9 GB, 31914983424 bytes
255 heads, 63 sectors/track, 3880 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

              Device Boot      Start         End      Blocks  Id System
/dev/block/mmcblk1p1               1        3554    28545024   c Win95 FAT32 (LBA)
/dev/block/mmcblk1p2            3554        3881     2620416  83 Linux
</code>```

First partition have 27,21 GB on Android and second only 2.49 GB.
When I sum up blocks of both partitions (which are bytes) it's equals 29,72 GB. But sd card is 32GB. Why the difference?

Title: Difference in partition size


问:
Restore Playlists
I carefully crafted music playlists in the "Play Music" app on my Android.

I deleted some songs from my library, but the song titles still appeared in my playlists.

Now the titles are gone, and I need the proper tracklisting for these playlists. Please help.

How do I recover the songs, or at least the titles?

Title: Restore Playlists


问:
Check which app triggers WIFI on
I have a Oneplus One device with Cyanogen OS 12.1.

The issue is that my battery history shows that my wifi is always on gets on after sometime and then never closes.

I did not turn my wifi on manually nor is the option "SCANNING ALWAYS available" is set on.

So I think that there must be some app which is triggering it or it may even be a CM issue. How to know what is causing this?

There are similar questions on this forum but none of them answers my query.

I have tried adb logcat | tee wifi.log  to check what is triggering the wifi but couldnt find anything. Any help would be appreciated.

Title: Check which app triggers WIFI on


问:
BlueStacks 2 WIFI MAC Address
How do I change BlueStacks 2 WIFI MAC Address to a specific WIFI MAC Address. For example I want to specifically change it to 11:22:33:44:55:66?</p>

Title: BlueStacks 2 WIFI MAC Address


问:
Nexus 5 can't connect to Bluetooth Headphones
My headphones (Philips SHB9150BK) used to work properly with my Nexus 5 until version 6.0.0. Since the last update to 6.0.1, it isn't even discoverable anymore. I still can connect the headphones to other devices, though, and it's working as always.

Has anyone experienced this before? How can I troubleshoot this?


问:
Unable to root Falcon running CM13 (6.0.1)
I have always run the nightly cyanogenmod builds as I've never found any major bugs. My device was rooted when running CM12, and since, I've received an update to CM13 through the inbuilt updater. However, I have noticed that since updating, I cannot get root access and have tried (multiple times/ways) to reroot my device, and I have not been able to.

Should I be able to root my device, or is this some feature of CM13 that I am as of yet unaware of?

If you want build.prop or any other information, please just ask. Thanks!

PS. The methods I've tried:

http://www.android.gs/root-moto-g-any-android-firmware/ (using a rooting boot.img)

http://forum.xda-developers.com/showthread.php?t=2639583 (Philz Touch)

Using Clockworkmod Recovery to install root ("Root access lost, fix root (/system/xbin/su)" dialog)

Clean wipe and reinstall of the latest CM13 nightly

EDIT: Yes, I've enabled root access in Developer Options (to both apps and ADB) and yet when apps request root access, no dialog shows up and they just fail. I've tried root checkers, I tried to install CWM using the app rather than flashing through fastboot... Neither worked.


问:
can't do hard reset
I have Nexus 7 from 2012. Some time ago I had problem with it and did hard-reset.

For several months it worked fine, but now it just restarting all the time.

I can't even go to Recovery Mode, pressing Volume Down and Power doesn't have any effect.

Do I have any other options before throwing it out?

Title: can't do hard reset


问:
Samsung Galaxy S3 cannot be accessed by pc after root
I did this to my samsung galaxy s3 and it cannot be accessed by a pc using usb.

Rooted android 4.2.2 using kingo root

Installed TWRP

Installed LiquidSmooth for galaxy s3

Installed GAPS

Apparently LiquidSmooth comes with SuperUser

Tried unrooting

Soft-bricked my device

Factory Reseted

Still cannot find phone on pc

Can anybody help?


问:
How to boot my Samsung Galaxy S4 mini when wall charger is plugged
I am Developing an Android Application, here i want my phone to start booting automatically when the phone is plugged into any power outlet without hitting any power button.I found many solutions and tried all but unfortunately nothing worked for me

I edited the file found in '/system/bin/playlpm' with the following custom script that will boot the phone:

Method #1

```<code>#!/system/bin/sh
/system/bin/reboot
</code>```

Method #2

```<code> #!/system/bin/sh/system/bin/reboot
</code>```

Method #3

```<code>#!/system/bin/sh
su
/system/bin/reboot
</code>```

but nothing worked for me. Please help me if somebody have any working solutions.


问:
Is it possible to install drivers for new hardware in Android OS?
I would like to know if it is possible  to install drivers for new hardware in Android OS. I know that Android images usually come only with the drivers for the particular device they're design for (to save space I guess). I have a Banana Pi M1 Chineese single board computer that runs Android 4.2. When I try to connect an Edimax wifi dongle to it or other generic Bluethooth dongle they don´t work. Does it make sense trying to look for drivers for these devices or is it worthless because if they existed they would already be installed there? This leads me to a broader question. Is it possible to manually install drivers in Android OS or this isn't supported as in for instance Windows or Linux OS?</p>


问:
Repair platform.xml
After upgrading to an experimental 6.0 build I've had some niggling issues. One of which was a bad WLAN config file, fixed with a delete. Second was SD Card being read only to some apps.

As a test I moved the platform.xml out to the SD and rebooted, to see if Android would generate its own (poor assumption), causing many apps to crash out, along with google play services.

I then moved it back, changed the perms to the normal for that directory, rebooted, but same issue. Cant find a way to restore the working state. Any suggestions how to fix it without a system wipe?

Title: Repair platform.xml


问:
Blurry screen on Galaxy Note 8.0 (N5110) running CyanogenMod 12
I have installed CM12 on my Galaxy Note 8.0 (N5110), but now nothing is as sharp as it used to be with original Samsung ROM; all icons, text, etc. are not sharp.

How to fix this?


问:
Can I install cyanogenmod from an internal SD?
So far I am a regular user of Galaxy Ace 2, but I would like to upgrade it to CM 11. I found this page http://forum.xda-developers.com/showthread.php?t=2555021 with step saying "Install the zip from External Storage" (emphasis is mine). The problem is:

the (external) card is inserted

I alread copied CM and Open Gapps (pico version) there

yet when I reboot in the recovery mode I only have option of install from "internal sd card"

And when I browse internal sd card, there is no mount point for external card, so I assume it is not mounted at all.

Is it OK to copy the files to internal SD? Or what else should I do? Thank you for the help in advance.


问:
Android 4.4 keep booting into recovery mode
I just bought this phone, DOOGEE LEO DG280, weeks later, it keep booting into recovery mode even though I restart the phone. I tried reboot system now, apply update from sdcard, wipe data/factory reset and wipe cache partition, but it doesn't work at all. I can't find solution on the internet that helps me. Any idea about this?


问:
How to use my Phone as a wifi camera for my TV
I've got a Sony Xperia Z3 phone.  I'd like to use the video camera function and live-stream to my TV in another room.  So far my best success was using 2 phones with video conferencing and an MHL cable, but I won't always have access to a second phone.

I tried using the miracast option, which allows me to cast the screen, but this didn't work with the video camera.

My TV is a fairly modern Samsung, and I also have a raspberry pi I could connect via hdmi.

Does anyone know of a way to do this without significant additional hardware?


问:
Nexus 4 3G not working
The phone is running AOSP Marshmallow, it is rooted and has Xposed installed. Mobile operator is Latvian Mobile Phone with working data plan. I can send and receive calls and texts and use WiFi.

So far I've tried:

Turning radio on and off - failed

Rebooting - failed

Rebooting in safe mode - failed

Going to lollipop stock image - failed

Going to jellybean stock image - failed

Flashing radios - failed

Checking APN at the service center - failed

Replacing the SIM card - failed

Doing all the stuff mentioned above with the new SIM card - failed

Title: Nexus 4 3G not working


问:
Bluetooth earpiece spontaneously disconnects and reconnects while talking
I have an Xperia Z3 Compact phone and a Plantronics Voyager Edge bluetooth earpiece. Recently the earpiece sometimes (usually once or twice a day) spontaneously disconnects from the phone and immediately reconnects (which causes the audio to halt for a couple of seconds). It might also be happening not only when I'm talking, I can't tell.

The problem is I don't know if the problem is with the phone or with the earpiece.

I upgraded the earpiece to the latest firmware but it didn't help.

I don't have any other bluetooth devices to check the phone with or another phone to check the earpiece with.

Is there any way I can check it?


问:
Where is the "Episodes" button on Pandora's Android app?
In the "Serial" podcast on Pandora, welcome instructions are provided that tell people to press the Episodes button to be able to change episodes or seasons (e.g. to go back to Episode 1 when Pandora decides to start with Episode 2 for some strange reason).

I see the Episodes button when using the web app in a PC browser, but can't find it anywhere in the Android app (which does behave strangely in how it jumps around sometimes), though I still get the instructions to push the Episodes button.  Where is it in the Android app?


问:
All texts grouped under own phone number
I have android 4.4.4, using republic wireless.

For some reason, all of my texts are being grouped under my own phone number, and instead of being identified as my contacts, only the senders phone number is identified:

Usually each person's texts would come in under a tab with their own name, or just a phone # if they aren't a contact. Instead, all of the texts are under a tab that just shows my phone number, like they're being forwarded or something, and instead of showing the name of the person sending it just has their phone number.

I initially started having the problem when I was using hangouts as my text messaging service, although I was using it for a while that way without this problem. When it started happening, I tried downloading google's messenger app, but it is still doing the same thing.

Any idea why this is happening?


问:
one way sync gmail contacts to galaxy s6
Is there a way to do a one way sync of my Gmail contacts to my phone? I want changes to my Gmail contacts to update on the Galaxy S6 but I do not want the changes on the phone to edit my Gmail contacts. In the account settings I turn the sync option off, but then it wont get my updates from Google when they are made. Is it possible to set this up or is it stuck as a two way sink?</p>


问:
G4 - Bluetooth headset and multiple media player
I have LG G4, 5.1. It came with "Audio" player pre installed. however, I use Poweramp. It works fine 90% of the time. However, occasionally, when I have my BT headset on (LG HBS 750), and press play nothing will happen. At other times, the other media player will start playing. Is there a way to kill any other music players besides poweramp and have my BT send commands directly to poweramp only?</p>


问:
How to extract road details from Google map?
I have a problem of getting GPS locations regarding to a road from google maps android API. How can we get a GPS location range regarding to a road? Is there any way to identify a marked point is within a road?</p>


问:
Force Skype and Hangouts to keep running
Skype and Hangouts automatically kill themselves after a period of inactivity if it's not in the foreground. As I want to appear online and receive IMs/calls, this is an incredible inconvenience.

Is there anything like process manager or similar that forces apps to keep running and/or lock app activity state?

NOTE Since my phone has a GB of RAM and only uses just a bit less than half with all regular apps open, it's not an Android memory management issue.


问:
How to solve "The contact doesn't exist" problem on Android 5.0
I have a new Nextbook tablet that shows message "The contact doesn't exist" after tapping the user icon (top right of pull down menu). I am trying to change accounts, but I cant get to the user menu. I can access settings to see that I have two Google accounts on the tablet, but I can not access them from the user button to switch accounts.

To be more specific about the behavior when I tap the user icon: The screen flashes, click sound is heard and small message bubble shows with "The contact doesn't exist". The menu does not change to show users and add button.


问:
Images and Videos missing from phone after system update
I have the Zenfone 2 ZE551ML 32GB. After updating to the latest version I noticed my most recent taken photos and videos are missing, they were all taken on the 15th of december. Even an album called bluetooth which had 1 picture in it is gone. I can't see the photos in any app or even the file manager, can't see them when I plug in the phone on a PC as well. I don't have an SD card on the phone so everything is in the internal storage.

Another weird thing is it says i'm using 6GB out of 25 of my internal storage but highlighting all files and check properties only shows 1.7GB.


问:
Uninstalled app reappears after boot
I have a problematic LG P715 which keeps randomly rebooting every few seconds after boot, and I'd like to remove some sensitive data before sending it to a random technician.

I cannot factory erase it (usually it reboots before I can reach the button, but even when it does reach it, after confirming that I want to erase, it simply does nothing), so I tried uninstalling each application individually to at least progress somewhat.

I was able to go to Setttings -> Applications, choose some applications, click on Uninstall, then confirm, wait for it to finish uninstalling, then click Ok, then return to the phone. Even after doing all that, after rebooting the phone, the same applications still appear on the list of Downloaded applications.

I wonder, how is this possible? They had disappeared from the list before reboot. Are they never actually erased after uninstallation? Is there something I can do to force them to be erased?

Edit: It's actually worse than I thought: I managed to get an ADB shell (no root) for a few seconds, so I deleted some files in the sdcard folder (where I had permission) via rm inside the ADB shell, but again after rebooting all those files and directories were there. It seems there must be some issue between some temporary storage and the permanent one, but I am at a loss to what happens in there, how can these commands execute and seem to produce some result when they actually do nothing.

Title: Uninstalled app reappears after boot


问:
how can I change my Facebook account on a app game or how to fix that error?
I am trying to change an account on a app I've downloaded (heart of Vegas slot game) I use to be able to change it before but now everytime I try to log into my Facebook account it won't let me.. It always pops up a warning sign saying ERROR  " you have already logged into one Facebook account on this device . please use same account to continue" I've already tried to uninstall the app and reinstall it, I also tried to clear cache, and also tried to clear data but none is working..

HELP!?


问:
How to get USB Game controller to work on rooted Xperia Z Tablet
I have a USB game controller I always use in my rooted Tecno Phantom Pad running Android 4.2.1 which works fine but can't get it to work on my rooted Sony Xperia Z Tablet running Android 5.1.1.

I tried to snoop the USB controller device info from my Xperia Z Tablet and got this.

This means that my device can detect the USB Game controller but yet nothing happens. I also ran this test via a powered USB Hub.

How can I get this to work?


问:
How to use middle wheel of a bluetooth mouse for zoom in and out in app?
I bought a Microsoft Sculpt Comfort Bluetooth Mouse (H3S-00003) recently to connect to my Samsung S5. There is a middle wheel in the mouse. I could use the wheel to scroll down and up in my Android Chrome.

Some of my apps (e.g. Solidworks viewer) allow using two fingers to zoom in and out. For the desktop version of the app, I can use the middle wheel function for zoom and and out. Is it possible to set the Android bluetooth mouse to do the same thing as the desktop version using the middle wheel?


问:
My Nexus 7(2012) tab stuck with "no command" and don't pass the dead android with red pyramid
I've rooted my tab one month ago with android 4.2 version. After that an app "Super User" was iinstalled. whenever I installed an app, "Super User" grants approval that app to run.It was all good but unfortunately I tried to update android. And after that my tab struck with "no command" and continuously taking restart. Another problem is "usb debugging" was not enabled, so I can't use usb too. Now friends, plz help me and suggest me how can I use my tab again. Thanks a lot.</p>


问:
HTC. infinite reboot. How to turn off bluetooth from adb?
I have rooted HTC Evo 3d with android 4.0.1
Today i turn on bluetooth and my phone went to infinite reboot. Nothing helps!
I think there is only one way to turn off bluetooth - ADB.

I tried use this commands, but it was useless:

```<code>adb shell su -c service call bluetooth_manager 8
adb shell su -c service call bluetooth 4
</code>```

Please help me turn off bluetooth!


问:
Disable android Sensor only for Call
I'm using device GT i 9082, Android 6 AOSP ROM. My phone has a problem. While answering/dialing call, putting phone near to ear the screen goes off - this works fine but when taking phone off the ear the screen doesn't come up.

I was wondering if I can stop that functionality of sensor only for call? or any other solution please.

Title: Disable android Sensor only for Call


问:
Forgotten backup PIN
I accidentally entered the pattern on my android phone wrong too many times. It now wants a backup pin to unlock. I remember the pattern and can get into my google account, but have forgotten my backup pin. I then locked it with Android Device Manager, and can see that lock screen, but it doesn't seem to give me a password entry field. If I click the back button it takes me to the backup pin entry field. I would really like to avoid resetting my phone. How can I reset my phone?</p>

Title: Forgotten backup PIN