问:
Wifi - "Error" , MAC Address is also unavailable
Just recently I Had to flash my boot partition back to it's Original, after a custom Kernel I was using had a few bugs. Upon flashing my original boot partition I used my phone as normal, but just yesterday I went to turn my wifi on, and then I get an "Error". I Think its is caused by my MAC Address because for some unknown reason to me, my MAC Address is unavailable. I Think the unavailble mac address is the cause of the problem. How would I fix this error so that I am able to use my wifi again.

My Phone is an LG Optimus L3 (e400f), running stock gingerbread (2.3.6)


问:
Manually Stop a Running Task
Is there a way to stop a specific Tasker task from running?

I can see the task in the Run Log but even when I go to the specific task that is running but there isn't a stop button.
This happens whether the task is manually started from a shortcut or from a profile.

On the other hand, there is a stop button when starting the task directly from inside the task editor.

ContentLicense: CC BY-SA 3.0

Title: Manually Stop a Running Task


问:
How do I export links from my bookmarks to Dropbox
I have collected many bookmarks on my Samsung Galaxy S3. Many of these I wish to use on my desktop computer. How do I export all the links from all the bookmarks on my phone and put them where Dropbox will upload them to my desktop computer? </p>


问:
Allowing requests for Google Voice Search with a Bluetooth headset when the device is locked?
I enabled

Allow requests with device locked

  For Bluetooth devices

  For wired headsets

in Settings for Google Voice search.

However, none of my devices ( Sky Vega racer3 and Samsung Galaxy Tab 10.1)
seems to be responsive to "Okay Google" using either a wired headset or my bluetooth headset.

Both of my devices respond correcctly to "Okay Google" with or without any bluetooth devices or wired headsets when the device is not locked.

None of my devices has a lock screen.

Ultimately, what I want to do is to be able to send Hangouts messages or ask for the time while I'm riding my bicycle without having to pull my cellphone out of the pocked and turn on the screen.


问:
Cannot save Clash of Clans progress
I have a Sony Xperia Z1 on Android 4.4 KitKat and a Google Play Service, but when I want to save my account, it's not possible. Why?

I even made a second Google Play account to save my progress on Clash of Clans, but nothing happens: loading ring just rotate for a while and then nothing. Please help me, I don't want to lose my progress.

I tried to make more than one account, but nothing works.

Title: Cannot save Clash of Clans progress


问:
OPO Root Mac OS X- SuperSU Binary Not Installed
Wondering if anyone is able to help me. I've been trying to root my OPO, but unfortunately RootChecker keeps coming back that the root access hasn't been installed properly, and SuperSU says "There is no SU binary installed and SuperSU cannot install it. There is a problem ... You need to manually re-root...". I've been using a few guides, but have primarily been trying to root using terminal https://forums.oneplus.net/threads/like-a-boss-how-to-root-your-oneplus-one.58493/ and have also tried the One Toolkit made by Consistant at XDA.

Steps taken so far:

Unlocked bootloader (checked it is unlocked, code shown below)

```<code>(bootloader)    Device tampered: true
(bootloader)    Device unlocked: true
(bootloader)    Charger screen enabled: false
(bootloader)    Display panel:
OKAY [  0.006s]
finished. total time: 0.006s
</code>```

Flashed TWRP custom recovery.

Flashed SuperSU.zip

I have also tried flashing SuperSU whilst booting TWRP through my mac (as in the guide).

Phone details:

CM 12.1-YOG4PAS1N0

Android v5.1.1

Any ideas? Thanks for your help.


问:
Can i make a shortcut on my homescreen to "unmount USB storage"?
I frequently connect a USB drive to my Sony Xperia M to listen to music. The only trouble is that i have to go through several steps to un-mount the USB when im done. I have to go to Home->Settings->storage->unmount usb.

This would be made easier if it where possible to have a homescreen icon/widget that i could tap on that would automatically unmount the usb.

Is this possible? or do i need to make my own app to do this?


问:
Wanted: A shell script to automate upgrades
I have a rooted Nexus 5, but this question would apply, I think, to any rooted device running Android 5.x and higher. Note also this is a question about a script to run on a osx/linux to manipulate the phone, not a script to run on the phone itself.

Rooted devices can't be upgraded using the OTA method, because that checks to see whether there is a stock recovery and won't install if there isn't one. So very time Android is upgraded, it's necessary for the owners of rooted devices to find and download the new factory image, flash it (which will destroy the custom recovery) and then reflash a custom recovery and finally reflash the superuser tool of choice.

Now that Google has committed to monthly security upgrades I'd like to automate this process. This needs a shell script or similar on OSX.

The middle part is easily done by tweaking a copy of the flash-all.sh script that comes with all factory images: something like

```<code>fastboot flash bootloader bootloader-hammerhead-hhz12h.img
fastboot reboot-bootloader
sleep 5
fastboot flash radio radio-hammerhead-m8974a-2.0.50.2.26.img
fastboot reboot-bootloader
sleep 5
fastboot update image-hammerhead-lmy48m.zip
# -w flag removed from line above so that itjust upgrades and does not wipe all the apps. data and so on
# now flash the recovery
fastboot reboot-bootloader
sleep 5
fastboot flash recovery twrp-2.8.6.0-hammerhead.img
</code>```

(obviously I can and should replace the particular file names with variables to suit)

I'd like to improve this script by adding a line or two at the beginning to download the most recent factory image from the Google site -- and that is what I don't know how to do. There must be some variant of curl or wget which will do this. But is there a way to choose the most recent available file from a particular site, download and then unzip and untar it automatically?


问:
Play store show only insufficient storage only after downloading
I have galaxy y dous .When I download apps from play service it shows insufficient storage only after download completes.After that even when I remove some app I have download app again to install.Is there any way I can prevent it .Or is there any way to get the apk from first download itself.

Can I get the APK on first download so that I can avoid downloading same again and again until it says memory available.


问:
Stock LG-D500 Bootloop. Factory Reset only temporarily fixes
I checked a few of the other links/threads. Mostly it seems like people changed something (ROM, or went in a did something to permissions) whereas my phone has no changes made by me. There are/were apps on the phone.

The phone started acting up awhile ago with lagging (if this is relevant) and I would have to restart it every couple days.

Now the apps are crashing and I wasn't able to open almost anything. Like Alarm Clock, Google Search, BaconReader, etc. I was able to open Pandora. When I tried to restart it it went into bootloop. I tried to fix it myself by searching Google and Factory Reset and Wipe dalvik-cache seemed to be the answer, however I could not for the life of me find Wipe dalvik-cache on the LG-D500. I did a factory reset and that let the phone turn back on. However soon the same apps were crashing and the non opening issue was back. Even System UI crashed on the last reset attempt.

If I hold power and down volume it only goes to factory reset. I can't figure out how to wipe the cache or anything like that.

Apps (now they are gone due to reset)

BaconReader

Candy and Soda Crush

CM Lock, Cleaner

Pandora

Moon Reader+

Chess.com

What can I do? Any help is greatly appreciated!

Thanks!


问:
Bluetooth headset doesn't play ringtone
I've paired Bluetooth headset Plantronics Explorer 390 with Android phone. I can set ringtone of incoming call on every contact. The issue is that any Android phone I've tested plays ringtone on internal speaker. In headset I hear at this moment standard beep-beep-beep. Is any way to send ringtone to BT headset?

Of course, BT headset ideally works in other terms: when I answer the call, sound output is redirected to headset as I expect and phone is using mic in headset.

But on every Nokia phone ringtone is correctly redirected to BT. It is very disappointing that newer and more functional Android lacks this feature.

I've tested next phones:

LG Optimus One P500

HTC Inspire 4G

I've tested different versions of firmware. From 2.2 to 2.3.4. The behavior is identical.

Title: Bluetooth headset doesn't play ringtone


问:
Galaxy S4 refuses to gain signal after being disconnected for a period of time
So, the scenario is this: I have a Verizon Galaxy S4 (SCH-I545, Android 5.0.1). One of my work sites is an amazingly effective dead zone. No signal whatsoever. If I enter the dead zone for a few minutes and leave, everything is fine. However, if I stay in the dead zone for 30+min or so (as is often the case), and then leave the dead zone, the phone will still display empty bars with a little "x" indicating no signal. It will stay like this indefinitely. I could turn on and off mobile data. I could turn on and off airplane mode. The only thing that fixes it is restarting the phone.

It's as if, once the phone realizes there's no signal coming its way, it will just refuse to even check for more every several minutes.

Is there a way to force such a check?

OwnerDisplayName: Anthony Hernandez


问:
Unable to flash latest factory images to a refurb Nexus 5
I purchased a Nexus 5 from Taobao for a bargain price of around $177. I assume it's some kind of refurb. I've tried flashing with the latest Android 5 Developer Preview as well as the latest stable release 5.1.1 (LMY48M). Both get stuck at sending 'system' when flashed with flash-all. I contacted the seller and was told to use Shuame software for Windows. Using that software I was able to flash a modified Android 4.4.4 ROM.

I don't want to be stuck with such an old, non-stock ROM but so far it's the only thing that works. Is it possible that I got some fake hardware that makes the newer releases incompatible? How should I go about testing if this Nexus 5 is real?

Update: Here's the specs from About phone:

System details (click to enlarge)


问:
How to hide EDGE icon from statusbar in Android 5.1?
After 5.1 upgrade this EDGE with a red circle appeared in the statusbar. It's useless and the size is wrong. How do I remove or hide it?


问:
Samsung Galaxy Tab 4 touch stops responding while holding
The tablet works fine with "normal" use (internet browsing, taking pictures, recording video, using youtube, playing movies, writing texts, etc) but whenever I use it to play a game that requires me to hold a button down for a period of time (And occasionally pressing other buttons at the same time), it lets me hold it but then just stops responding to touch until I lift my finger up and place it back down again. The buttons I'm talking are of course touch buttons of the game.

I went ahead and activated debugging options to see screen touches and coordinates, and it's clear that when this error happens the screen is not registering touches.

At first I thought it was a hardware issue, but the I found other people having the same problem.

This happens not in one game but in all the games I tested which require this kind of action (like league of evil)

Any hint would be appreciated.

Samsung Galaxy Tab 4 SM T230
Android 4.4.2


问:
Is there any working method to mount Ext4 partitions on 64 bit Android 5?
Is seems that, as for today, there are no working methods (apps or hacks) to make Ext4 partitions work (read/write) on my Android v5.1 64 bits.

My device is a Jiayu S3 with a Xtreme ROM (not stock, but still Jiayu official MOD) based on v5.1.0.

This is what has been tested until now:

[root] Ntfs Mounter (Application failure on boot)

[USB OTG Helper] (No card detected)

[Root]StickMount (No card detected)

Having no more data, I must assume that the problem could come from some incompatibility with the 64 bit version of the operating system.

Does anyone know of a method to make Ext4 partitioned SD cards be mount on 64 bit Android v5 devices?


问:
With stock lollipop, how do I edit/copy/paste/move file onto the external sd card?
I have the stock Google Play Edition of the LG G Pad 8.3. It is essentially a nexus device, stock lollipop, but also has an SD card slot.

I want to use ES File Explorer to manage files on the SD card but cannot figure out how to give it permission.  It pops up with this image:

but selecting to show the SD card does not actually show the external SD card (actually toggling this on/off seems to do nothing).

How do I manage files on the external SD card using ES File Explorer?  As far as I can tell, there is no stock file manager to do this.


问:
"Camera Busy" dialog shows on Moto X 2013 when I launch camera app
I have a problem my Moto x 2013 camera says it is busy every time I start the  Motorola camera app. Third party apps also have trouble using the camera. My phone is  on Android version 5.1 but it has been happening when my phone was on 4.4.4.

I have restarted my phone, rebooted it in safe mode, factory reset my Moto x and my camera still says  "Camera Busy". I also cleared my Moto x cache partition but it did not work.

Is there any way to fix this problem?

(Click image to enlarge)


问:
How do I connect to my phone that's in vigilant coma?
So I have this phone that looks like it's working fine under the hood, but input (power button and touchscreen) as well as the output (display) are pretty much dead.

Interlude on what happened

Clumsy me dropped his phone in water.

Turning it off immediately and heating it through to dry gave red
  light. (battery cannot be removed quickly)

Volume down + power for 60 seconds caused life signs to reappear.

After recharge and start, display was very washed out (very white, barely readable) and touchscreen was partially unresponsive. Besides that the phone worked normally.

Display "faded" further over couple of hours. Now being black, flickering when plugged to power (nothings visible, just black
  flickering). Volume buttons occasionally still work, providing sound
  feedback for changing the volume.

I got a new phone (see, I like to fix things, but with water damage you never know what got damaged. I keep the phone and see if I can fix it later, but for now I use a new one, because I need to call people 'n stuff, ok?)

How can I access the data on the phone?
I installed adb, but in order to connect to the phone, the phone has to be enabled for that. I don't remember if I ever changed that setting, but connecting it to the pc and listing all the connected devices gave nothing. I assume that it is not set up for that.

I read about a safe mode, but that needs a phone that's turned off and a power button. My phone is on and the power button doesn't work. At least I think it doesn't work.

Is there any way to access the phone via cable from outside to bypass the broken io? Or is my only option to actually fix the phone to make a regular connection to it?


问:
How to swap external SD card with intenal one on rooted Ematic EGS102 tablet?
Today I rooted my Chinese tablet (Ematic EGS102), and opened its vold.fstab but I can't find the line that points to the internal memory. This is what I found:

(Click image to enlarge)

All I know is:

The line mentioning "dev_mount flash" is the nand flash.

Next line is for the external SD and the another next one  is for USB.

So which line should be used to swap external_sd with?

My internal storage has only 500 MB capacity so swapping would be really useful. I tried moving apps to SD card but it moves them to nand flash and the data keeps downloading in the internal, so storage runs out and apps don't work.

Help would be greatly appreciated.


问:
Where is the clear all notifications button on Lollipop?
After an update months ago, I no longer have a clear all button for notifications. I must manually swipe each of them away. Is there a setting I'm missing?

I'm using Nexus 4 Android 5.1.1.


问:
On multiple devices, remove notifications if they have been read on one device
I use two cell phones and multiple devices. I work in the US and live in Canada. When I cross the border and turn on my Nexus 4, I get every notification sent since it was turned off. If it was one week or two, I still get them.

I want to keep notifications on when I use the phone. How do I eliminate all of the notifications (FB, Email) I've already gotten on another device?


问:
Status bar shows same icon twice
When I switch on Hotspot,  the status bar shows the Hotspot ON icon at two places,  near the clock and on the left side too.  I'm running Cyanogenmod 12.1 with Android Lollipop 5.1</p>

Title: Status bar shows same icon twice


问:
Bypass & Enable tether / WiFi hotspot on Android M (Marshmallow) Preview 3?
I just got a Nexus 6 and flashed Android M Preview 3 to it and also have it rooted, but how do I enable tethering / WiFi hotspot?

I tried doing the old method of finding dun_tether in the SQLite database, but it isn't there anymore.

How would one enable tethering / WiFi hotspot on Android M (Marshmallow)?


问:
Alphabetical app list on xperia Z1 compact
An earlier Lollipop ROM on my Xperia Z1 compact had the option to sort the apps alphabetically in a very nice way: Apps were put in a matrix with one row per letter, and the apps sorted alphabetically in subsequent columns.

Now I have CyanogenMod 12.1 which is great, but I cannot find the setting that would bring back this app ordering.

I have forgotten how to restore this wonderful way to get to the apps. Does anyone know whether this is a special launcher, app or theme?

(the apus and aviate launchers seem to have similar functionality, but I have never installed those and their names don't sound familiar)

Some posts describe a route via the 'menu' button in the app drawer, but the only softkeys I have are back, home and window list.

Could it be a Cyanogenmod / Lollipop feature that is just really hard to find?


问:
Get image of android OS without rooting the device
As part of my academic project, I want to get the image of a whole Android OS of a non-rooted device in order to do forensics activity.

Can I do this using SCSI commands as SCSI directly communicates with hardware and does not need root permission?

I got information that SCSI interaction is possible with Android non-rooted device from
Implementation of an Android Framework
for USB storage access without root rights

OwnerDisplayName: Shruthi


问:
How to set reminder that repeats only on weekdays?
How to set reminder that repeats only on weekdays(except saturday and sunday) on Android(kitkat) calendar app?</p>


问:
Manage files in Android phone from PC hangs
I always get unstable file management with my  Android phones while they are connected to Windows 8 PC. It takes too long to create directory in phones card. Window freezes when I try to rename folder. Sometimes not all files are copied to device when I for example select whole directory copy. Where is problem?</p>


问:
How to loop record well in Android?
I need to find a procedure to record well well video which is about recording video conferences from another screen.

The length of the session is about 0.5 - 1 hour.
The size of my memory card is 8 Gb, but I do not know if it is possible to record there with my Samsung Galaxy S4.
I need to record sound and some quality of the video. It is enough that I can see some of the video like boundaries at least; precise accuracy not needed.

How can you loop-record videos well in basic Samsung smart-phones?

Title: How to loop record well in Android?


问:
Contacts suddenly changed colour
I'm using Android Lollipop 5.0.2 with the stock Contacts app on my Moto E. I can't remember what I was doing when this happened, but all of the contacts suddenly changed colour! And what's really annoying is that I liked the colours that had previously been chosen for them, but the new colours are really ugly.

What caused this, and is there any way to reverse it?

Title: Contacts suddenly changed colour


问:
Massive slow down when changing networks
Whenever my phone switches from cellular to wifi or the reverse, the phone effectively stalls.  This can last for a minute or so.  It is still functional during this time, but very slow and stuttering (if in the middle of an animation it will do a few frames, then stop for several seconds, then do a few more).

I am thinking that one or more apps are set to wake up when the network status changes, and either they are conflicting with each other or holding the cpu while they wait for the network to be finally ready.

What should I use to work this out?  I have betterbatterystats installed, amplify, and greenify.  I have taken a few stabs at working out what might be causing this (mostly by greenifying any app that is destined to wake when the network changes), and some random click-and-hope type attempts to figure it out.

The phone is a Samsung Note 4, N910G running kitkat.


问:
How to do a clone / backup & restore between identical devices via USB and broken screen
I have a Nexus 4 with a recently broken screen, and another Nexus 4 that works. I would like to copy all of the data, apps, etc, from the broken Nexus 4 to the working Nexus 4.  The broken phone still powers on and I can access it via USB cable, I just can't use the screen.

Is there any way to do this entirely via the USB cable, adb, etc? The methods I've seen for copying data all require installing and controlling software (such as Titanium backup, or other third-party cloning software) on the source phone. I can't very well do that, since that phone isn't fully functional.

This question is almost exactly what I want, except for the part where I must authorize the backup on my source device, which is not possible without a functioning screen.


问:
Detect foreground application when in immersive mode
There are several  applications able to force the so called immersive ("full screen") mode. (Power Toggles being one of them)

My problem is that, in that configuration, Tasker and similar applications seem to be unable to detect which is the foreground running application: profiles based on that kind of state doesn't trigger until full screen mode is toggled off.

I'm looking for an alternate way to detect the foreground app (Tasker Plugin would be fine) which doesn't have that limitation.


问:
Redirect sound to 3.5 mm plug
The headphone jack on my phone doesn't work from time to time. Sound is then played over the loudspeaker, not the headphone. It's quite annoying, but not yet worth the trouble to send in my phone for repair.

Phone: Sony Z1 Compact, Android 5.0

Is there a way (setting) to force Android to send sound to the headphone jack?

Title: Redirect sound to 3.5 mm plug


问:
How can I get the correct mapping for my bluetooth keyboard?
I have a Galaxy Tab 10.1 running Android 5.1, and a Buffalo BSKBB22 bluetooth keyboard.

It connects fine, and I can type with it, but the keyboard mapping is off. The keyboard itself has a Japanese key mapping, but it seems I can only select from various western and European key mappings in the settings on my tablet device.

Is there a way I can get the correct key mapping for my bluetooth keyboard?


问:
Where does Bandcamp app store its cache?
Bandcamp refuses to install on an external SD card. It also doesn't offer an option to save its cache anywhere else than the main flash of my phone. So it either clogs my phone storage within days or, if I reduce the amount of storage it can use, allows me to listen just one or two albums when offline.

So I thought of finding the cache of that app on my phone, moving it over to the SD card and link it with good old Unix "ln -s" command back to the place, where Bandcamp will expect it to be.

Where can I find the audio cache of that app?

What are my chances for this hack to work?


问:
Lower part of the screen not responding to touch
While I was holding my LG G2 when running, sweat got into the lower right corner under the screen, leading to the lower part of the screen (about one third inches) not responding to touch. The phone can power on without any problem, and there is no problem with the display either, but I can't access to the navigation buttons (home, back, etc) and the app drawer button because that part of the screen is not responsive. I sent it to LG for warranty repair, but they returned the phone as is, claiming "liquid damage, not repairable".

My question is: Is the phone really not repairable as LG claimed? Is the damage only on the screen? Can I just buy a display / digitizer assembly and replace the screen myself?


问:
Disable "Search apps..." search bar
Device: Moto G 2nd gen (Android 5.0.2).

I'm not sure what I've done (if anything at all), but now when I click on the apps icon in my home screen, instead of my apps being divided between a few pages with me having the ability to scroll right/left between them, now my apps are all in one long page with a search bar above it.

See picture:

Does anyone know how to revert the situation?

Title: Disable "Search apps..." search bar


问:
Having problems with carrier activation and connecting to cell network
I have a Sprint HTC One (m7wls) and recently switched over to Ting. I was using Cyanogenmod and couldn't use Ting's instructions for activating with them, so I used an RUU from HTC to get back to stock. Now I can follow the reset instructions, but they don't seem to be working. When I enter # # 72786 # I can see some fields (MDN, MSID, M.IP Customer Profile...). Not sure how important it is, but the MDN and MSID show 'No' rather than any info. So then I tap 'Reset' in the menu, and the phone reboots but then that's it. No more activation activities happen on their own from there. I can continue to Update Profile and Update PRL in settings and that will get me a 4G connection, but still no cellular network (no texting or calling and no bars).

Using code # # 3282 # gets me into a more advanced menu where I can see more fields (other than MSID and MDN) and alot of them say 'No'. I have that Slot Mode is enabled, but there's a 'No' under Slot Index. Mobile Country Code and Access Overload Class also say 'No'. I'm not sure what they all are, but I thought I'd mention them incase they help point to a bigger problem.

I'm guessing that part of the problem is the missing my MDN and MSID numbers, so I've been focused on getting those configured. I've tried using these menus to set the values (just MDN and MSID at first, but I've also tried once with just the Slot Index) and every time I tap 'Commit Modifications' in the menu to save it I see a toast that says 'Commit Failed'. Using captured logs from logcat and a decompiled version of the EPST I think I've found that it won't save anything because the Telephony interface indicates that the radio is still on when it's about to save.

I'd greatly appreciate any thoughts are explanations of how things work. I'm going to try a rooted stock ROM that will let me get into the EPST app. If I still see the same problems then I'm going to write an app that will let me turn off the radio (hence, the rooted stock) before trying to set the MDN and MSID. But I'm still worried about all those 'No's and am wondering if those will have to be set too before network connection will start to work.


问:
Can't update latest lollipop patch on rooted Nexus 9
My rooted LTE Nexus 9 running stock 5.1.1 has the Teamwin recovery installed. When I restart to apply the latest lollipop update, I can see error messages in the console as in the pic. Why does it mis identify my device as not having LTE? Is there a way to apply the update without re flashing the stock recovery? Edit - I got the same problem with stock recovery as well.

]


问:
change android recovery language
Accidentaly brick recovery mode on my cell (Star B943 MTK6589 quad core with Android 4.1.2), so I reinstall my recovery.img from backup (Android system recovery 3e) using mobileuncle tools. Worked fine. Cell is ok BUT recovery menu is now in chinese!
On recovery boot, for a second, cell displays FACTORY MODE on second line, then displays chinese.
How can I change to english?

cell is Star B943 Mt6589 quad with Android 4.1.2 with recovery 3e.
What append-
I tried to replace my recovery with CTRv2.2 (CarlivTouchRecovery from XDA forum) for MT6589 chips. Cell worked fine except for recovery mode. When I boot in recovery cell stuck on droid recovery logo. Need to remove battery to properly boot. So, I copied my (3e) recovery.img cell to root and ran Mobileuncle tools app available in Google store to reload recovery. Worked fine except now my recovery is in chinese! My intuition is that the recovery menu is language sensitive depending on some flag somewhere.
I used  MTK Droid Tools v2.5.3d to generate backup of cell, which I took the recovery image for Mobileuncle.
Cell language is french.

Title: change android recovery language


问:
Is there a way to use a phone as a virtual keychain for NFC tags?
So let's say I have a bunch of things that can be unlocked via NFC. Each thing would correspond with one tag and one tag only. The problem would then be that I'd have to carry a bunch of tags around. What would make this much more easy to manage, would be to use a phone as a keychain for these tags. A keychain in the sense that all tags would be virtually stored on the phone. When I then would need to use a tag to unlock its corresponding thing, I'd need to emulate the tag through the phone.

The question is then: is there a method available to store multiple virtual NFC tags on the phone, and can the phone in turn act as a tag emulator?

P.S. My current phone doesn't support NFC, but my near-future phone will (and it will of course have the latest Android version that's available at that time).


问:
Programs in background keep shutting down, Android 5.0.2 Lollipop, LG G2 mini, LG-D620r
I have the LG G2 mini, model number LG-D620r, smart phone on which Android 5.0.2 Lollipop runs. Every since the phone updated to this version of Android, it keeps shutting down programs that are in the background.

For instance, if I have a navigation program running, and for a moment use another program, I cannot resume the navigation program. It just restarts which takes a lot longer.

What can I do to retain the programs running in the background instead of them being shut down all the time?


问:
Can't unlock Android
My Phone is locked, and I forgot the pin code. I tried to reset password using Android device manager, but it failed, I can't unlock device with new changed password. But when sending Ring using ADM (Just to make sure it detects phone) it works fine.

I cannot remote wipe or hard reset because I want the data. Please suggest the way to recover the Phone storage?

PS: Phone isn't rooted, and is connected to WIFI.

Thanks.

Title: Can't unlock Android


问:
Google Play Store is showing "top developer" sign randomly and wrong. Why?
I was trying to search for podcast apps. When the apps are listed, some of them have "top developer" sign (blue diamond), and when I select one app and go into it and come back to search results again, the "top developer" signs changes to some other apps.

For example, look at the following snapshots:

All apps are from top developers (click the image for full size)

Some of previous apps are actually not from top developers (click the image for full size)

Is this a bug or is my OS affected like in Mr. Robot?


问:
com.newrelic.agent.android: how to get rid of it?
Phone: Nexus 5
OS: 5.1.1

I have a lot of apps on my phone: probably 100+. A lot of them I use only once or twice a month.  I hooked up my phone to ADB recently and saw a ton of crashes, etc.  But what worried me most was New Relic.  I have 2 questions

How can I find out which app installed this New Relic Agent?

How can I uninstall the app?


问:
How to revert Android kill-switched Nvidia Shield tablet?
Apparently Nvidia decided to kill most of their shipped Shield tablets because of a battery defect. Considering my shield already died, does anyone have any idea on how exactly could this be reverted?</p>


问:
What considerations govern working with the /firmware partition?
In some recovery options (such as ClockworkMod recovery's advanced options on some devices), there is a Format /firmware option.  I have searched for descriptions of this partition, but have found little:

This question asks about it, but there is no authoritative
answer.

Stock ROMs that I have do not modify this partition.

I see it mounted on some devices as:

```<code>/dev/block/platform/msm_sdcc.1/by-name/modem /firmware ext4 ro,context=u:object_r:firmware_file:s0,nosuid,nodev,noatime,nodiratime,user_xattr,barrier=1,data=ordered 0 0
</code>```

What are the logistical considerations surrounding this partition, including:

What does the /firmware partition usually contain?

Is it on all Android devices or just a subset?

What are the consequences of formatting it?

Can its contents be recreated?

etc.


问:
Windows 7 VPN Connection over Android 3G network problem
What I have:

Windows 7 Notebook with VPN settings (username password),

Android 4 phone (ASUS 400) as Wi-Fi/USB modem,

VPN network;

What I need:

VPN connection in Windows 7 over 3g network shared by my phone.

But I get 619 error every time.
Someone says that android does not work with VPN connection when it shares internet-connection via modem.


问:
No internet on Galaxy Tab 2 10.1 when connected to Windows Wifi Hotspot
I have followed the instructions to set up a virtual wifi hotspot on my Windows 10 machine (connected via ethernet to router) from LifeHacker. I have connected my iphone and Samsung Galaxy Tab 2 10.1 (P5110 running Android 4.2.2) to the new wifi hotspot. My iphone can access the internet fine, however my tablet cannot.

I have tried to use the default browser and chrome on my tablet and both say the web page is not available (chrome shows the dino and DNS_PROBE_FINISHED_NO_INTERNET message).

Why is my tablet not connecting to the internet and how do I fix it?

[Edit]

A co-worker has connected his Windows 10 pc and HTC One (running 5.0) to my hotspot and both are fine on the internet.

[Edit]

After restarting the router the tablet can access the internet via the pc. Did restarting the router fix the issue or is that just a coincidence? Why could other devices connect to my pc except for my tablet?


问:
Periodically copy files from internal to external SD card
How can I schedule moving camera directory from internal phone storage to external SD card?

I want to move new files in the directory every day, to free up space on internal storage.

Is there any way for this such as by using script? (I have a rooted device)


问:
MP3 player occasionally resets playlist
I'm using the standard MP3 player on Android 4.3. Whenever I listen to long pieces of music and I pause for several minutes and/or unplug the headphones (not sure of the exact cause), the playlist will just reset itself. This causes

the active track to reset, which is very annoying for long tracks, and

the shuffled playlist to reset, so that many tracks will be played twice.

Is there a way to make the player just remember the shuffled playlist as well as the active track position, no matter how long I don't use it?

I could not find a setting in the standard player to prevent it from resetting. This question indicates that for more memory capacity I would need a different player than the standard one, but I don't need it to keep track of several audiobooks or something.

Can this be achieved with the standard player, or do I really need another player, and if so, which one could it be? Another question deals with the logging of timestamps (which could solve that aspect), but it doesn't have an answer yet.

I'm not very skilled with Android, so please tell me in case I forgot to mention something.

edit: One reason why I use the standard player is that it's capable of playing very many formats which other players cannot, such as .flac, .wma, .m4a, .mka

Title: MP3 player occasionally resets playlist


问:
Increase phone speed
My phone is sometimes freezed. I have installed and configured Clean Master and Battery Doctor, but it still slow. My Phone is Huawei Y300, running Android 4.1. What can I do for speed up the system?

Buying another phone is not an option

Title: Increase phone speed


问:
4.1.2 vs 4.4.4 - any improvements re general speed and app caching?
I am growing frustrated with the following behaviours of Android 4.1.2, which has been running my rooted Samsung S3 I9300 for two years now:

1) When switching between already-open apps, more often than not going back to an app that had some data loaded (e.g. address looked up in GoogleMaps, page loaded in Firefox etc) results in the app starting all over from its initial screen and thus losing the input I had given it just minutes ago
2) Generally very sluggish operation, although I am careful to limit the number of apps installed/running
3) When connecting to a new WiFi network for the first time, the phone restarts (this has only been happening for a few months)

Since I have no real reason to invest in a new phone (new features in S4,S5 and S6 don't seem that appealing), I was considering just doing an OS upgrade, and since Lollipop seems to not be rated well by users, KitKat 4.4.4 seems the likely candidate.
I am wondering whether anyone who has used my current version (4.1.2) can comment on whether any of the above behaviours are corrected in v4.4.4, in particular whether the general performance/speed is better in 4.4.4 (or other KitKat versions) as compared to 4.1.2 (or other Jellybean versions), and whether app caching actually works during multitasking.


问:
How to sync profile pictures with Facebook after May 2015
I just bought a new phone (OnePlus Two) and I can't get the Facebook profile sync to work. After reading up on it, it seems facebook has killed all 3rd party apps that do this back in May... which is fine, except I can't do it even with the official Facebook app... there seems to be no such option!

Yes, I added the facebook account to account; no, I have not enabled sync in facebook settings since there is no such option in the latest facebook app.

Any thoughts on how could I achieve this?


问:
Android disconnects from Wi-Fi if I don't login to hot-spot. But there is no login needed
Today I connected to a Wi-Fi network with two options:

Free access to intranet. No login required.

Paid access to full internet access. Login and payment required.

I just wanted to use the free service. But Android detected the connection as a hot-spot (login required),after about a minute it would disconnect from the hot spot, saying login timed out.

Really a bummer. The guy with iPad next to me wasn't having any issues.

Why does Android say it's a hot-spot and demand login when it's not necessary? How can I stop Android from disconnecting?

Samsung Galaxy S4, Android 4.3.

Thanks


问:
Why did my Google Play store switch to Chinese?
I tried to update an app, and all of a sudden my Google Play Store switched from English to Cantonese. I'm in New Zealand, and my ip address--according to whereisip.net--appears to be California.
What the heck is going on?</p>


问:
Alarm with time zone
The stock alarm clock only allows specifying times in the local time zone.

However, I often travel across time zones, and I need a couple of alarms to happen at a given (absolute) time, regardless of the time zone where I currently am.

A related question was closed for asking about apps that would allow setting alarms in a specific time zone: Is there a alarm clock app that uses UTC time?

Without asking about specific apps. Is it possible to somehow specify alarms in one specific time zone?

If that is not possible with any existing app, could anyone give any pointers that would make it possible to develop such an app?

I was thinking on somehow subscribing to changes in the time zone (maybe checking the time every 30 minutes?), and adjust some of the alarms when a change is detected. But that sounds elaborated and prone to issues. Any other ideas?

Title: Alarm with time zone


问:
Can't find text message that was to a group
When John Doe texts to a group that includes me, it appears as a notification in the upper left corner, but then when I go to the text message conversations between me and John Doe, its not there. Where is it?</p>


问:
How can I install e2fsprogs on my device?
My phone has the "Monkey Test" virus and there is solution in here, but when I try to execute this command:

```<code>chattr -iaA providerCertificate.apk
</code>```

I receive the error "chattr : not found".

I found a solution here, which is to install e2fsprogs, but I don't know how to install it using ADB. How can i install it?

OwnerDisplayName: Ahmad


问:
Is blocking ads with hosts file slow?
For instance, Adaway offers a hosts file with 300K addresses to block.

It works, but will this significantly impact performance, therefor battery life? When does the system access the hosts file? Every time a connection is made, or is it just read once at system restart and stored in memory?

Title: Is blocking ads with hosts file slow?


问:
"com.android.phone has stopped" after reboot, cured by changing Preferred Network -- how to make permanent
Phone info:

"Google Play Edition" Galaxy S4 - GT-I9505ZWG

Android 5.1, build number LMY470.S008.150802

AT&T, Philadelphia

After rebooting the phone, I get the "com.android.phone has stopped" popup, and am unable to make calls or connect to the network.

I've been through the following steps to try to cure:

Clear cache for all apps

Clear data for "Phone" app (2 of them), as well as "CSC" and "com.phone.sec"

On a hunch, because there were issues last year with Google phones and AT&T support for LTE, I went into the "Preferred Network" settings and attempted to switch to 3G.

The first time doing this after reboot, touching the setting caused the settings app to exit. However, the signal strength meter then showed a signal, and I was able to make a call and connect to the Internet.

I then went back to this settings page, and was able to successfully change back and forth between 3G and LTE.

However, after rebooting, I was back in "com.android.phone has stopped" land.

It appears to be a settings issue, but which setting? And how to change? Is there a particular app that I should clear data for?

I don't want to do a factory reset, especially since I have a work-around.

If necessary, I can get logcat output. However I'd want a pointer to the specific output required, rather than dumping the whole mess into the question.


问:
Mount an ext4 formatted sdcard on a stock Lolipop 5.1 rom (rooted)
I currently have a Sony Z1 Compact. Unfortunately, it has an unlockable bootloader. I typically install Cyanogen on my android devices, but in this case, I don't have that option (without messing around with packages and changing out some kernels and so-fourth which I don't want to deal with).

I'm running the stock Sony 5.1 firmware with SuperSU root. My SDCard from my old phone is formatted in ext4. Upon loading it into the Sony Z1, it tells me the card is "damaged" (it doesn't recognize ext4) and refused to mount it. I can mount it via adb manually using the following:

```<code>mount -t ext4 /dev/block/mmcblk1p1 /storage/sdcard1
</code>```

But of course, it doesn't show up as mounted storage in any Android app or the system preferences. I've found a myriad of posts for older 4.4 firmware references files that don't seem to exist in Android 5.1 (at least not on the Sony firmware).

The kernel obviously supports ext4. I can mount it. What is the correct way to get the Sony firmware to either auto-mount it or to setup my device to mount it manually on boot and have it correctly recognize it as an external sdcard to all my other android apps.

It's a 128GB card filled with my music (well, A through W. X through Z will have to wait until I decide to buy a bigger card) and I really don't want to have to reformat it in vfat.


问:
Exclamation mark on Wi-FI icon even with good network coverage
I'm using Sony Xperia Z2, after updated to lollipop 5.1.1 my wifi is not working in spite of a good connection due to that exclamation mark. I read so many related posts and answers here, but i don't understand the technical term/way to solve this problem. I kindly request to explain me in a very simple step-by-step procedure. Thanks</p>


问:
Is there a way to check DNS cache on an Android device?
Is there a way to check DNS cache on an Android device? For example, you can check it on windows via the command ipconfig /displaydns.


问:
Losing Mobile / Cell Connection When Leaving Home WiFi
I have a Galaxy S6 (T-Mobile US). This issue started shortly after the OTA update to 5.1.1. The frequency has increased from every few days to every time I leave the house whereby a reboot is the only way to fix it...toggling WiFi, data connection, airplane mode doesn't work. I have tried wiping the cache partition but have yet to resort to the last measure, a factory reset. The 4G LTE connection icon appears fine but the data flow arrows beneath it will be inactive when in this state.

Update: Installed the September T-Mobile OTA and was able to leave the house today w/out needing a reboot.


问:
How to Plug and Play a USB Barcode-Printer in android devices
We are trying to print Barcode using USB Barcode Printer from an android device.

The available printer model is GODEX EZ520, we used printer-share app from Playstore and it detected the printer-device but they do not have supporting drivers for this printer.

Do we need to write separate drivers for printers to print from android or Is there any other ways to connect android device and Barcode Printers via usb.


问:
HTTP Progressive Streaming from .mp4 link problem in Android 2.2
http://streaming.sit.kmutt.ac.th/test.mp4

Using above link, I use web browser in android 2.2 open this link, it cannot stream video using video player. But if I use android 2.3.x, it's ok.

Why android 2.2 cannot view mp4 file using video player?


问:
Selfie stick button causes music to play instead of taking photo
I am trying to get a selfie stick to work with a HTC One X running CyanogenMod 7.

The selfie stick is button activated with a 3.5mm "headphone" jack.
http://www.amazon.co.uk/gp/product/B010QPQDRC

The default camera app on the phone takes photos when pressing the volume down button.

However, when I use the selfie stick button, it starts up the music app and begins to play music (almost as if it is sending the play/pause signal instead of volume down).

I tried the selfie stick with a Nexus 5 running stock Lollipop and it works perfectly fine using Google Camera.

I have tried disabling the music app (Apollo) but that did not work.

Any ideas welcome!


问:
Back up all what app chats as text file and not as what app backup
I want to backup whats app chat messages as text file.

I tried to open whatapp backup but it wont open as text.

I tried to export whatsapp message to mail, the problem is that it work only for one conversion chat and not all chats.

How can i back up all messages as text file(or files)?


问:
Display only the sender's name in text notifications
When I receive an SMS, I get a notification displaying the sender name with the message. I don't want the message text to be displayed in the notification, just the sender name is enough.</p>


问:
Only allow forwarded calls
My job requires that I am on call from time to time, and contactable 24/7. There is an on-call phone that I typically forward all calls through to my own personal device.

Is there a way in which I can allow only calls that were originally put through to the on-call phone while my phone is in quiet hours?

There's a related question and answer about whitelisting certain numbers during quiet hours, but my problem is different as I could get called from any number.

If it helps, the on-call device is an iPhone 4S on the o2 network, and my device is a rooted Nexus 5 with Cyanogenmod 12 on Giffgaff (also o2).

Title: Only allow forwarded calls


问:
I've lost my storage to update the phone Android
yesterday update the phone of a friend by clicking on software updates.
The phone is a Cubot s308 and the update version is v6_cq_4137c_v0.1.3_20150721 (4.4 Android).

After upgrading to pass to have 16 gb of storage to 1 gb. I can not install any app or do anything because the storage is full. It is as if had a partition that is not mounted and I think that on that partition will be photos, music...

Any thing that can be done to recover the lost storage and its contents?

Thank you!


问:
Firefox in cache slowing down phone
I am running Cyanogenmod on my rather old Motorola Droid 4, and it is pretty slow by now. I something quite strange lately. From what I read on the internet Android seems to handle memory quite differently than Windows or a regular Linux would. From what I understand it keeps apps that I closed or put into the background in the memory so they start up faster. This can be observed when going to Settings->Apps->Active->Apps in Cache. Apps in the cache should not be really running and should get cleared out as soon as active apps require the storage. But when I have Firefox in cache this doesn't seem to work. Firefox uses quite a lot of memory (top tells me it's using around 800mb, while Android still reports some 150-300mb, my phone has 1GB RAM total) and while it is in cache the whole phone slows to a crawl. Top tells me, that my CPU is hardly used, so it looks just like heavy swapping.
If I kill Firefox my phone instantly speeds up.

I checked using busybox free that I don't have swapping enabled.

Does anyone know the reason behind that or even a way to fix that issue?

OwnerDisplayName: Dakkaron

Title: Firefox in cache slowing down phone


问:
Can USB host ports be dangerous in uncontrolled environments? Virus etc?
We have an Android device with 2 external USB host ports. Now I wonder what harm can be accomplished by an attacker with malicous intentions, provided that:

The user can not access settings or any App that we do not control (love an example of apps we would need to prevent access to)

USB debugging is turned off

Our device is rooted (just to mention)

Could you give me an example what harm an attacker could do, considered the above conditions.

As I understand it, if a USB is mounted, then for something to be dangerous, it has to be executed. However execution must come from "the inside", no?
If we control the inside, then there shouldn't be a problem, right?


问:
No SIM card detected -- factory reseted and now it works. What now?
I have a Samsung Galaxy S 5 rooted and flashed CyanogenMod 12.1 on it (Android 5.1.1). Everything always have worked fine.

Earlier this week, I have installed a new app in my phone. Although I cannot 100% blame the app, after a reboot having this app installed, the phone could not recognize the SIM card anymore. It always was showing me the message No SIM card detected. Even after I uninstalled the app, rebooted, removed SIM card, re-rebooted, re-inserted the SIM card, re-re-rebooted, wiped Dalvik, wiped cache, upgraded the ROM, the problem persisted.

I finally decided to make a full ROM backup and then a factory reset.

The SIM card is now correctly recognized, as before.

Now what should I do? Re-install every app I had before and re-configure each of them one by one? Restore the backup with chance that the SIM card will not be recognized again? And if it won't, how can I solve this problem without the need of a full factory reset and re-installation/configuration of all my apps?

What are the steps to go through this situation?


问:
How to change home button functionality?
I have an Android 4.4.2 unit that has a custom application that needs to be launched on boot and when the user presses the home button. As it stands now, I can press the home button and get a list of launchers that can be used, unfortunately the app I'd like to use is not on this list. This unit is rooted and unlocked but, isn't our unit, so I can't (or shouldn't) install apps to get this feature working. Is there an android vanilla way of choosing what app you'd like to use, even if it isn't on the list of launchers. I can sideload an application if I absolutely have to, but I'd rather not as I'm not sure how the company renting these to us would feel about us adding apks to their device. </p>


问:
Retrieve Stock Browser History?
I have a Galaxy S4 and today 45 browser tabs I've been using for about six months just disappeared (should have been bookmarking things, yes).

Is there a way I can retrieve my browser history via my PC so I can peruse through it and get an idea of what I'm missing?

Alternately is there any kind of way I can re-open my lost session?

Title: Retrieve Stock Browser History?


问:
How does "LiPP" work?
Every single tweet right now seems to be about "Lipp":

It says "LiPP is the app to dub your voice over the videos you like! Become your favourite character!"

I'm interested to know how this app works - does it have it's own built in audio / video encoder, or is the video uploaded and downloaded to a server (using data / WiFi), or does it use another app that already exists as part of Android and has an API for this?

Title: How does "LiPP" work?


问:
Take screenshot from AirDroid
I really need to know what other apps my child is using because I see him using his phone on a camera, but I don't know what does he do. Is he playing a game, working on some apps, or browsing... so, how to work with screenshot in AirDroid app? </p>

Title: Take screenshot from AirDroid


问:
Android encryption and Native Library Storage Locations
I have written an app that uses a native shared library via the Android NDK. I am particularly interested to know whether the .so file is stored in a location that would be encrypted if I were to enable encryption on the phone.

When that app is installed on the phone, where does the .so file get stored Also, is there only one or multiple copies of that .so file on the phone?

ContentLicense: CC BY-SA 4.0


问:
Is the /data dir encrypted when android encryption is enabled?
I am interested to know if the /data dir is encrypted when android encryption is enabled?

Specifically, I have an app that utilises a native shared object library

I believe this file resides in /data/data/<package_name>/lib/

My phone is not rooted so I do not believe I have permissions to view this dir

But I would like to know if it gets encrypted?


问:
Port forwarding in android
I have a rooted android device in which I have installed SSH server. i need to access my device outside my LANi.e. over the internet.inorder to access it over the internet i need to enable port forwarding . so , is there any way of forwarding ports in android?

Title: Port forwarding in android


问:
How to flash scatter-based stock ROM through custom recovery
I'm using a Karbonn A52+ (Mediatek 6572) running on Android 4.2.2 (stock ROM) with root access, unlocked bootloader and Clockwork Mod Custom Recovery installed.

I have a 4.4 Kitkat stock ROM for my device which is a scatter-based ROM and needs to be flashed through SP Flash Tool. However, for some reasons I'm unable to use SP Flash Tool.

So is there any method which can allow me to flash that ROM through CWM Recovery? I have experience in flashing custom ROMs through recovery, but never flashed a stock ROM using recovery. Can I convert that ROM which needs to be flashed using SP Flash Tool to a ROM which can be flashed through custom Recovery?

P.S. The 4.4 ROM which I want to flash is known to have some bugs, like:

It locks my bootloader.

It disallows me to boot into recovery using the hardware method, i.e. Power button + Volume Up Button. The only way to get into recovery would be either through ADB or through a Reboot Manager from Play Store.


问:
How to remount /system from host shell script?
I am trying to remount the /system partition from a shell, and tried both commands suggested in this post, but it does not work. Here are the script commands I am issuing:

```<code>adb shell mount | grep -e "system"
echo
adb shell "su -c 'adb shell mount -o rw,remount /system'"
echo
adb shell mount | grep -e "system"
echo
</code>```

I get:

```<code>/dev/block/platform/msm_sdcc.1/by-name/system /system ext4 ro,seclabel,relatime,data=ordered 0 0

error: device not found

/dev/block/platform/msm_sdcc.1/by-name/system /system ext4 ro,seclabel,relatime,data=ordered 0 0
</code>```

@Bo Lawson- I tried the command you suggested. Here are the relevant lines from my script; /system remains in ro.

adb shell mount | grep -e "system"

```<code>echo
adb shell su -c mount -o remount,rw /system
echo
adb shell mount | grep -e "system"
echo
</code>```

Here is the output...

```<code>sansari@ubuntu:~$ ./module_script
/dev/block/platform/msm_sdcc.1/by-name/system /system ext4 ro,seclabel,relatime,data=ordered 0 0

/dev/block/platform/msm_sdcc.1/by-name/system /system ext4 ro,seclabel,relatime,data=ordered 0 0
</code>```

@Bo Lawson - Thanks. You are absolutely right. I got the result I wanted. No explanation is necessary; I am just grateful for your help.


问:
Test wired headset detection via software
Since I still don't know whether my problem (call audio doesn't work without headset or speakerphone) is caused by faulty hardware or by software, I'd like to know the following:

Is there a way to tell if the headset switch in the headset jack (which tells the phone app whether a wired headset is connected or not) is working as expected?

I am looking for a solution that doesn't require disassembling the phone before knowing what is actually causing the aforementioned problem. The following idea comes to mind:

Is there a way to display/query/dump the status of the headset detection via adb? Maybe something under /dev?

Or are there other ways to tell if Android thinks a wired headphone is currently connected?

By the way, I am running Cyanogenmod version 11-20141112-SNAPSHOT if that makes any difference.

UPDATE

I noticed that stock Android seems to have a "headset icon" to indicate that a headset is connected, but apparently Cyanogenmod doesn't have this (or I accidentally disabled it somehow).


问:
Using ROMs made for a specific device
I have a moto x 2013 Dev edition and got the unfortunate news yesterday that Motorola will not be updating my device to marshmallow, which I understand as an older device, but the specs of this phone can easily handle android m.

I am planning on flashing cyanogenmod onto the device, however I have 2 questions relating to that.

1) if I flash the device, will I still be able to use it as a development tool? I am working on learning the android API and having a physical device that I can test things on using the adb is essential.

2) this device has not received any device specific cyanogenmod ROMs in almost a year. Is it safe to load on a generic cm 13 ROM when it is released, or will it not support the device? (I am not concerned with the loss of the Motorola apps. Half of them are being discontinued anyway)

Title: Using ROMs made for a specific device


问:
Checking for Updates loop after factory reset (Nexus 5)
I messed around a bit with some system apps and had to factory reset from TWRP recovery. Factory reset was successful, no errors.

Now, when I boot the phone everything seems normal, but after connecting to a wireless network, it gets stuck on the "Looking for Updates" part. I've had it on for at least an hour. I've tried to reboot too, with no luck.


问:
How to root ZTE Optik (ZTE V55)?
I have a ZTE Optik (also known as ZTE V55). I've rooted a ZTE Force from FreedomPop using only towelroot, and it has it's own problems but that's a different story.

I've tried a number of one-touch root apps and used Kingo root on the computer as well but nothing works. Everytime I use one, it says root failed. I've sent requests to each of their devs and I've got nothing back in 2 years. If it's any help the most I've ever gotten from one of the app was my tablet would restart when I tried using Kingroot.

I really hope somebody could help me, I'm not a noob at this at all but I wouldn't call myself a dev, I'm more than comfortable with downloading apps off the web straight to my tablet because I don't have a PC of my own yet, I just wanted to put that out there.

I have used the following one-touch root apps, all have failed:

Towelroot

Kingo root

Kingroot

(I have also tried using a terminal emulator to root but I just gave up after a while)

Title: How to root ZTE Optik (ZTE V55)?


问:
galaxy s6 build number LRX22G.G920W8VLU2A0G2 root help
Its been like 3 hours that I am looking about how to root this build number of my galaxy s6, I have found some links but I don't know whether they will work or not. Please can you tell which method will root the phone.

My phone details are
Android version 5.0.2
Build # LRX22G.G920W8VLU2A0G2

Methods I found to root phone are -

Method # 1. forum.   xda-developers.   com/show...&postcount=175 [ someone did root it with build number G920W8VLU1AOCG , mine is G920W8VLU2A0G2 so can I use his method over my build number? ] and cf auto root is only available for G920F (international version).

Method # 2. http://www.skipsoft.net/?page_id=1197

Method # 3. http://galaxys6root.highonandroid.co...twrp-recovery/

Please tell me which method should i use to root my galaxy s6.

Thank you very much.


问:
Mark an email as read when read on Gmail app
Sometimes I read my emails on my lg g3 but every time I open my mac I have those emails as unread. In other words, it seems that the gmail app does not mark the emails as read on the Google's server ...

How can I solve this problem?

EDIT: Solved! I just deleted the app's data and it worked as someone mentioned here


问:
Android doesn't feel as responsive as iOS?
I have a Moto G 2 on Lollipop and it doesn't feel as fast as like say an iPhone 5C. I know that it should be the same,  as they have similar specs,  but why does Lollipop feel so slow compared to iOS? Everything just feels snappier on iPhone. I think part of it is that iOS opens apps immediately then loads,  but android loads the app,  then opens it. How do I make my phone feel more responsive? It is rooted. </p>


问:
How to log all user interaction on my device?
I would like to know whether on an Android device it is possible to:

Log the date and time of every time a password is entered on my Android phone (this security measure would mean that if someone in my home sees me enter a password without me noticing it, and then uses it to log into my phone, I would then be able to see whether this happened or not to take care of my suspicion).

As an extra step, I would like to log all activity once the login screen is bypassed as well (for instance the date an time and application name for each time an application is opened. This is because, while my phone is password protected, once I make the screen go blank by pressing the hardware button on the right, some time goes by until a password is required: I have things set up this way so that I don't have to enter the password just so often). So, is there a way to log all user activity when the lock screen has been bypassed as well?

The device I have is a Samsung Galaxy SIII Neo running Android KitKat 4.4.2.
The device has been rooted.

Thanks!!!


问:
Using the Cerberus shell to input commands
I'd like to use the Cerberus shell to input commands like taps, swipes, and text. I know how to do it using the command line and ADB shell, but I don't have USB debugging enabled on my Nexus6, so I'm trying to do it using Cerberus. I was under the impression that the same commands should work, but they don't seem to be.

I tried sending "input keyevent 26"; it sends, but nothing happens on my phone (the screen should turn on). I also tried "adb shell input keyevent 26", but it just says "error: device not found".

Am I doing something wrong? Or is this something the Cerberus shell can't do?

Background:

I've got a Nexus 6 with a broken screen: no display and no touchscreen. My goal is to run the app SMS Backup and Restore so I can backup my texts before sending in my phone to be replaced.

I don't seem to have USB debugging enabled (though I thought I did -- I reinstalled the OS a few months ago) -- when I type "adb devices," the result is blank.

I can use the ADB shell to input taps, swipes, and text/numbers to my Nexus4. I think I could blindly use the SMS Backup app by inputting the proper sequence of commands into the Cerberus shell. (Or, maybe even easier, just use the shell to get my phone to cast to my tv or Chromecast; then I could use a OTG mouse.)


问:
Prevent multiple recipients of group message to be displayed on other recipients
I once sent a message to multiple recipients and my friend told me he could see the other recipients and that it was a group message. This was a while ago and he was using a BlackBerry (though my phone was Android).

How does this work and can you make it so that if a message has multiple recipients, they appear to each one as if they're the only recipient?


问:
cannot sign in on my Android device - Google 2-factor authentication
So I'm trying to add my google acct to my device and it seems to be working fine up to the point where's it's asking me for the code sent to my phone via SMS.

I correctly put it in but the page goes to my "My Account" page which is not normal. On other devices, the page would normally close automatically and it continues on with adding my acct.

I've tried:

updating Play Store services to 8.1.x. I made use the -xxx matches when I downloaded the APK.

I tried verifying using backup code.

I tried verifying using Google Authenticator app.

Any ideas on how to fix this? thanks! :)


问:
Problem installing paid app using google play on mobile
I have previously bought an app from google play and I am trying to install it on a new phone I just bought.

On mobile: When I go on MY APPS on Google Play on mobile, it is there but asks me to buy it again or redeem it.
on PC: when I go on the app's page on Google Play on PC it says the app is installed and compatible with all my devices (but doesn't show this new phone, even though I have logged in there and already used google play).

I have only installed it once, on my previous phone.

Can you please help me out?
Thanks


问:
Built in Wireless file management?
I connected my Nexus 7 tablet (stock Android 5.1.1) to my Windows 10 computer via USB a few days ago, and saw a notification on my tablet saying something like: "Still using USB file transfer? Try out Wireless file management". I was not running any apps at the time, I had just turned on my tablet. I clicked on it and it directed me to a page in the settings, but I immediately switched applications (i.e. tabbed out) as I was in the middle of something else and decided I would check out this built-in wireless file transfer later, which I assumed must have been included in the latest update I installed.

Unfortunately I forgot to go back and have a look at it. I've tried to search for it again in the settings but cannot find it. Google searches do not help, as they are cluttered with links to third party applications for wireless file transfers. I've also tried connecting the tablet to my computer via USB again, but the notification doesn't show up.

Does anybody know how to enable this built in wireless file management that seems to have been included in a newer update? (I know there are many third party apps that can do this, but I am not interested in them)

Also, I assume "wireless file management" means that I can see and access my tablet as a media device (or whatever) when it is connected to my local network through wifi; allowing me to then transfer files to it.

Thanks!

PS: Additional data: Stock android 5.1.1. The build version is LMY47V and the kernel version is 3.1.10-gf5d7b8b. I haven't installed any special drivers, so it must have been the default Nexus 7 Windows USB driver. Couldn't find any relevant setting in developer options.

Title: Built in Wireless file management?


问:
Reboot alternatives
So my situation is this. About a week or so ago my power button fell out and I dont want to get it repaired until I back up my stuff. For some reason my pc hasn't been able to link to back up but that has been since i got the phone.
So anyway, my internet has gone down on my phone so I want to restart it (turn it off and on). The turning off is fine but I'd rather not sit there for an hour doing the unpluck power, pull out and reinsert battery to make it turn on again. I know on Blackberry phones there is an app as standard which acts like the power button but is there one (or an option somewhere) for android where I can restart my device? The only option I can see is a factory reset option.

My phone is a Note 3 if that helps.

Title: Reboot alternatives


问:
Voice Dial Aliases?
So I frequently use the voice-activated dial feature, wherein you say aloud "Call Jeff" and it will locate "Jeff" in your contacts and dial him.  However, I have run into an issue which stems from the fact that I, and many of my family/friends, are of a minority origin, and therefore have names which do not really have a great English pronunciation.  My attempts to voice dial these contacts have met with nothing but frustration and failure;  I have no idea what the voice dialer would consider a match to those contacts.  Is there any way to 'alias' a contact, so that instead of saying "Call Apichatpong" (which will do naught but confuse the dialer) I can say "Call Uncle" or "Call Father-In-Law" or something to that effect?  I do NOT want to have to rename the contact;  the person's name is what it is, and I'd prefer to see it that way in the contacts.  I just need an additional way to refer to that contact for voice-dial purposes.  Is there a way to achieve this?</p>

Title: Voice Dial Aliases?


问:
Phone's battery is draining unusually fast even when not in use
The hardware I'm using:

OnePlus One, bought late december 2014

Stock Cyanogenmod, version 12.1 - YOG4PAS1N0 (= Android 5.1.1)

no apps to improve battery life in any way

Basically, the battery is just draining without any obviously strenuous activity. Previously, I would have competitions with a fellow OP1 user about who could push their battery life beyond the 3 day threshold. Now I go to work fully charged, the battery drops by 10% while I'm still on the 45min train ride to work and I return home with single digits or an empty battery.

After having a look at the battery stats I noticed this:

During work, I turned the screen on and off periodically to check WhatsApp and a little Fallout:Shelter (5min) on the loo but beyond that nothing happened. Screen battery usage was at 6%, so that can't be it.

Details for "Email" (Email, app version 2.6.1 (237), Boxer Inc):

CPU total/foreground: 2h 16m 30s / 52s

Keep awake: 1h 55m 54s

Mobile packets received/sent: 1655/1985

Mobile radio active: 53m 2s

Wi-Fi packets received/sent: 58/68

Details for "Android OS":

CPU total: 2h 3m 12s

Keep awake: 23m 48s

Mobile packets received/sent: 3293/3039

Mobile radio active: 1h 1m 15s

Wi-Fi packets received/sent: 293/282

Does anybody have a clue what's going on here? Because I'm straight out of ideas after checking if the Boxer Email has a recurring memory leak, restarting the phone, looking for a way to disable syncing the entire email archive in the app (who knows, might just be it) or testing if it is caused by push synchronisation...


问:
Change hardware name
I'm using official Android Emulator. When I run this I get:

```<code>adb shell getprop | grep hardware
</code>```

I get

```<code>[ro.boot.hardware]: [goldfish]
[ro.hardware]: [goldfish]
[ro.kernel.androidboot.hardware]: [goldfish]
</code>```

I want to rename goldfish to any other word.

I can run emulator in debug mode emulator -avd test -show-kernel -verbose to see kernel parameters:

```<code>  kernel.path = /home/artyom/android-sdk-linux/system-images/android-19/default/armeabi-v7a//kernel-qemu
  kernel.parameters =  androidboot.hardware=goldfish android.checkjni=1
  kernel.newDeviceNaming = no
  kernel.supportsYaffs2 = yes
</code>```

So, Android Emulator passes androidboot.hardware=goldfish to the QEMU.

Lets dive into Android source.

http://androidxref.com/5.1.1_r6/xref/system/core/init/util.c#407

Here we can see, that passing hardware via kernel command line makes it unchangable.

```<code>void get_hardware_name(char *hardware, unsigned int *revision)
{
    const char *cpuinfo = "/proc/cpuinfo";
    char *data = NULL;
    size_t len = 0, limit = 1024;
    int fd, n;
    char *x, *hw, *rev;

    /* Hardware string was provided on kernel command line */
    if (hardware[0])
        return;
</code>```

According to this, hardware name used to init file init.machine_name.rc, so renaming goldfish to any other name must be combined with renaming init.goldfish.rc to init.anyname.rc.

So my question is, how can I force different hardware name ? How I can different androidboot.hardware value to the qemu ? What files, other than init.goldfish.rc should I change ? Different hardware name must be forced while compiling ?

I've tried adding this to .config file:

```<code>CONFIG_CMDLINE="androidboot.hardware=randomname android.checkjni=1"
CONFIG_CMDLINE_EXTRA=y
CONFIG_CMDLINE_FORCE=y
</code>```

It didn't help.

Related question: https://stackoverflow.com/questions/20572781/android-boot-where-is-the-init-hardware-rc-read-in-init-c-where-are-servic

Additional info: https://wiki.diebin.at/Under_the_hood_of_Android_Emulator_(appcert)#Initialize_Goldfish_hardware

Title: Change hardware name


问:
How to access home screen settings with Galaxy S5 Neo?
I just bought the new Samsung Galaxy S5 Neo that has Android 5.1.1 as the default OS OOTB.

First thing I noticed is that the home screen transition effects are gone (3D rotation/card stack) so I wanted to turn them on. This proved hard as I can't find how to access the home screen settings where the transition effects can be enabled/disabled.

I tried to press and hold on empty home screen (the way it was done with my previous phone Galaxy S3) but the only options there are themes, widgets and wallpapers so home screen settings is missing.

Does anyone know where I can turn on those transition effects?

EDIT: It also seems that there is some micro lag and stutter when quickly swiping home screens or application menu screens. I tried out a few custom launchers and I noticed that the micro lag is gone. I can only assume that the problem lies within the TouchWiz version? Maybe some bug?

Thank you! :)


问:
Root Intex Aqua Star 2 16GB, 4.4.2
Tried to root my phone with available softwares both for pc nd mobile. But still no luck.
But some softwares like Aptoid, AVG, Universal Androot says that i have root.
This is the log from Root Checker

Overall Status: Root access is not properly installed on this device

Feedback Mode: Install Root
  Issue: Unable to access root user account

Feedback: Step 1) Verify whether superuser app granted root permission
  Step 2) Reinstall superuser app, ideally from the custom recovery (TWRP, etc.)

Stage 1 - Superuser App: Installed
  Installed: SuperSU by Chainfire - version 2.46

Stage 2 - Superuser Binary Files: Installed
  Standard Location
  Command: ls -l /system/xbin/su
  Result:  -rwsr-sr-x root root 87588 2015-07-06 20:09 su
  Version: null
  Analysis: Root access IS correctly configured for this file! Executing this file can grant root access! Setuid attribute is present and root user ownership is present.

Standard Location
  Command: ls -l /system/bin/su
  Result:  lrwxr-xr-x root shell 2015-07-06 19:12 su -> ../xbin/su
  Version: null
  Analysis: File su is a symbolic link pointing to another file: ../xbin/su

Alternative Location
  Command: ls -l /sbin/su
  Result:  /sbin/su: Permission denied
  Analysis: File system permissions restricted and denied access.

Alternative Location
  Command: ls -l /system/xbin/sudo
  Result:  /system/xbin/sudo: No such file or directory
  Analysis: File /system/xbin/sudo does not exist.

Stage 3 - Root User Account: Error
  Error: stderr: null, stdout: null, exit_value: 1

Optional - ADB Shell User Status
  Non-Root Shell User
  Setting stored in /default.prop and configured as: ro.secure=1

Additional - System Environment PATH Status
  System Environment PATH: /sbin /vendor/bin /system/sbin /system/bin /system/xbin

Someone please help me to root my phone. Googled a lot andand still couldn't find a solution.
Also tried installing Superuser App.
But no luck so far.

Title: Root Intex Aqua Star 2 16GB, 4.4.2


问:
Samsung Galaxy S3: cannot sign in to Play Store
I just got a Galaxy S3, and would like to use it as a development device.
Factory reset-ed it, and it runs 4.1.2

I successfully log in to my google account

The weird thing is every time I'm trying open Play Store, it will ask my Google account again. Weird.

One time, I got this:

I cannot install any apps from Play Store, and this is so annoying. Is there any workaround?


问:
How to make a "Proxied-Hotspot"
I have an android phone running Kitkat. I am able to make a hotspot, however on every device that I connect it to I need a proxy to get it working. This could get a little annoying so is there maybe a way to create a hotspot that already has a proxy.</p>

Title: How to make a "Proxied-Hotspot"


问:
"OK Google, Shazam this song" not working
I'm using 2014 Moto X (2nd Gen) with Android 5.1 and latest version of Shazam application (5.10.1-150928) from Google Play Store.

I'm trying out the following feature and cannot get it to work:

"OK Google, Shazam this song" – Shazam Help

My phone recognizes me saying "OK Moto X" and "OK Google" without any issues.


问:
Activating the Android 5 native SIP client
Android brought a native SIP client with version 2.3, which some carriers/phone manufacturers disabled. You can re-enable it in Android 4 by setting some values in /system/build.prop.

I do have a Android 5 phone (Wiko Rainbow UP), and there are no SIP settings in sight. build.prop does not contain the

```<code>ro.config.hw_support_ipcall=true
ro.config.hide_sipcall=false
</code>```

settings.

How can I enable the native VoIP client on Android 5?


问:
Using an OTG drive with Google Play Music?
I just bought an OTG drive thinking I could mount it and cache music on it on Google Play Music. I am using a 2014 Moto X, with 16GB internal storage.

It mounts just fine on the device, but Google Play Music doesn't "see" the USB drive--the option is grayed out in the settings under "Storage Location". I'm able to use the OTG drive through other apps.

Is there any way to get this to work? Would it be possible to create a symlink from the internal drive onto the external drive, and if so, where would I even create the symlink at?


问:
HTC Sync Manager not recognizing One M8 after unlocking bootloader
I unlocked my boot loader and tried to restore from htc sync. nothing works. it recognizes for a split second and then says that update needed. this device needs to connect with the latest version of htc sync manager. please check for update or download. I am on the latest version. I'm panicking because I need my backed up data back. Please help</p>


问:
Unable to connect to PC via SSH from Android
I use Windows 7 on my Desktop. I tried to connect my Android to my PC via Wi-Fi connection. SSH port 22 is open on my desktop. I use ConnectBot to connect to my PC.

The result of ipconfig:

```C:\Windows\system32>ipconfigWindows IP ConfigurationEthernet adapter Local Area Connection 3:
Connection-specific DNS Suffix . : domain.name
Link-local IPv6 Address . . . . . : fe80::286c:2b76:ae18:18f5%14
IPv4 Address. . . . . . . . . . . : 192.168.0.2
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : fe80::6e72:20ff:fe7d:1063%14192.168.0.1
Ethernet adapter Local Area Connection 3:
Media State . . . . . . . . . . . : Media disconnectedConnection-specific
DNS Suffix . :Ethernet adapter Local Area Connection:Connection-specific
DNS Suffix . :Link-local IPv6 Address . . . . . : fe80::79f7:d7d6:8a1f:4c13%11
IPv4 Address. . . . . . . . . . . : 192.168.42.25
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.42.129
C:\Windows\system32>
```

From ConnectBot via SSH:

```Connecting to 192.168.0.2:
The authenticity of host '
lished.
Host EC key fingerprint is
:6c:de:6c:f6:c0:78:2a
Key exchange was not finis
The server hostkey was not
allback

Connection Lost
```

Ping result from Android:

```
app_30@android:/ $ ping 192.168.0.2
PING 192.168.0.2 (192.168.0.2) 56(84) bytes of data.
64 bytes from 192.168.0.2: icmp_seq=1 ttl=128 time=2.13 ms
64 bytes from 192.168.0.2: icmp_seq=2 ttl=128 time=1.46 ms
64 bytes from 192.168.0.2: icmp_seq=3 ttl=128 time=1.44 ms
64 bytes from 192.168.0.2: icmp_seq=4 ttl=128 time=1.45 ms
64 bytes from 192.168.0.2: icmp_seq=5 ttl=128 time=1.44 ms
64 bytes from 192.168.0.2: icmp_seq=6 ttl=128 time=1.49 ms
64 bytes from 192.168.0.2: icmp_seq=7 ttl=128 time=1.44 ms
64 bytes from 192.168.0.2: icmp_seq=8 ttl=128 time=1.43 ms
64 bytes from 192.168.0.2: icmp_seq=9 ttl=128 time=1.40 ms
64 bytes from 192.168.0.2: icmp_seq=10 ttl=128 time=1.37 ms
```

The connection works with USB and the problem is for WIFI only.


问:
Lollipop Encryption fails: Cannot open footer file /efs/metadata
I have a Galaxy Note GT-N7000 and I've just flashed Paranoid Android v5.1.1 I cleared the Dalvik cache and did a factory reset before flashing. Everything works well, except Android refuses to encrypt my device. Going into Settings -> Security -> Encrypt phone I press the "Encrypt" button. The phone displays a droid logo and reboots after about 5 seconds. Obviously, my phone has not been encrypted, so what went wrong?

Hooked up the phone to my laptop and started adb. Logcat says:

E/Cryptfs ( 1913): Cannot open footer file /efs/metadata for get
  E/Cryptfs ( 1913): Cannot open footer file /efs/metadata for put
  E/Cryptfs ( 1913): Error writing the key to the end of the partition
  E/Cryptfs ( 1913): Error enabling encryption after framework
  is shutdown, no data changed, restarting system

What does this mean, and how can I fix it?

My phone is rooted. Pattern lock is set. The device was fully charged and connected to a power source via USB.

This guy seems to have the same problem as me:
http://forum.xda-developers.com/showpost.php?p=60916406&postcount=6136

I think the problem is caused by the same thing since my ROM is based on CM12.


问:
Test app from Android Studio on device without USB
I've started developing apps for Android with Android Studio. I've been using the emulator to test my app. Althrough it works fine, I want to test the app on my physical Android phone. The problem is, the USB connector of my phone is broken.

Is there a way to test my app without using USB, maybe with Wifi or Bluetooth?

Thanks in advance!


问:
How to ensure app installed on SD card stays on SD card after an update
I have noticed that apps I have moved to the SD card (external storage) when updated get moved back to the device (internal storage).  Is there a way on a non-rooted device to ensure the updated app stays on the external storage?</p>


问:
ADB can't find Nexus 7 after bootloading
I am trying to update my (unrooted and unlocked) Nexus 7 2013 wi-fi to Marshmallow via OTA. My Nexus is in USB debug mode and I have installed adb on my system and download the update package file.

When I connect my Nexus to Windows 10, the system recognizes the device as Android ADB Composite and everything seems to be working as it should. I open a command prompt and type:

adb devices

and the device along with its id is correctly shown. At this point I reboot to bootloader, so I type

adb reboot bootloader

the Nexus reboots, enters in the bootloader and the following happens:

adb can't find the device anymore

the device manager puts the Nexus among the Other devices and so it appears no driver has been installed for it.

As suggested on numerous tutorials, I right-click on the device and choose to manually install an appropriate driver. And I expect to find Android ADB Composite in the list and instead the only possible choice is Samsung Android ADB Interface — which does not work, because, naturally, Nexus 7 is not a Samsung device.

I have tried to solve this issue by installing the google usb drivers using the 15 seconds install and it didn't help at all.

What can I do to overcome this issue?


问:
Is there any way to fix MediaStorage's file creation dates without root?
I am using PlayerPro to play audio on my phone. I want my MP3s to be sorted by creation date and that is the problem. PlayerPro seems to be using MediaStorage's data about media files and it gets the files' creation/update date. But when I add a bunch of files at once to my SDCard and MediaStorage scans it, the creation date of these files is set as it was at the moment of scanning, not the actual file creation date (same applies for file update date). I've managed to write a shell script in attempt to fix it:

```<code>su
sqlite3 /data/data/com.android.providers.media/databases/external-90164ef8.db "select _data from files" > /sdcard/log.txt
while read p; do
  STAT=`stat -c%Y "$p"`
  p2="${p//\'/\'\'}"
  QUERY="update files set date_added='$STAT', date_modified='$STAT' where _data like '$p2'"
  echo "$p"
  sqlite3 /data/data/com.android.providers.media/databases/external-90164ef8.db "$QUERY"
done < /sdcard/log.txt
rm /sdcard/log.txt
</code>```

(it dumps an entire database into log file, then updates every string in database according to file creation date).

The problem is, now I've bought a new phone and I can't root it now, so I need a way to do it without obtaining root.

Is there any way to do so? QuickPic has the ability to fix date (I guess it does the same thing I want to do but for image files), so I guess it is, but I don't know how to do it.


问:
Connect Android devices via (ethernet) cable
I want to assign static IP Addresses to my Android devices, and connect them via say Ethernet cable.

Essentially create a network by connecting android devices using physical wires and have IP addresses work.

The idea is to allow android devices to communicate to one another using the IP the addresses over this network. (There is no wifi in this solution.)

Is this possible?


问:
Gmail POP emails disappear after a while
After a period of a few days, I've noticed that Gmail seems to just get rid of emails previously in my POP account inbox. They aren't in the trash, and I never deleted them or removed them in any way. They just vanish. The Load More button doesn't seem to do anything either.

Where do they go? How can I prevent this?


问:
Desire 626 asking for previous gmail account after factory reset
I have bought a secondhand HTC Desire 626 and when I turned it on it was asking for the previous user's gmail details.

I then loaded up the boot menu/dos menu by holding the volume - and power for 5 seconds and selected factory reset, which ran its process as expected. But the device is still asking for the previous user's gmail info after the reset.

Is there any reason the reset did not clear this link and allow me to start from scratch as I expected?
Or is there a better way of achieving the result I desire (sorry, pun totally intended!)


问:
Unable to mount and failed to install custom ROM in Droid XT912
I have a Droid Razr XT912 which was bricked but now recovered after some effort followed from XDA.

Now I'm trying to install a new custom ROM to my device with Safestrap, but it's giving me a message about failure on every action, such as  failed to create backup, failed on wipe and failed to install.

(Click image to enlarge)

Can anybody tell me what should I do?


问:
SGS 2, CM 12.1: getting a different recovery
I have a Samsung Galaxy S 2 (or I9100). On this phone I have been running CWM with Cyanogenmod for quite a while.

Recently, I updated to Cyanogenmod 12.1. It was quite a hassle, but it works fine. The only real problem I have with it is that the recovery has changed. Now I have CM's own recovery, which misses a nand backup feature.
Since I have always used CWM, I would like that back. But maybe something else is fine too, I do not really know anyting about the world of recoveries.

This leads me to the folllowing main question: can I get CWM back with CM 12.1? And some side questions: is it even possible to just flash another recovery? Why was CWM removed from CM 12.1? Is there another alternative flash? How would it work, flashing a new recovery?


问:
Any way to get a text file list of all my Chrome Favourites?
How can I get a list of all my current Chrome favourites on my phone WITHOUT a PC. I need to do this without computer access at all. I'm on a S6 on 5.0.2.

Also, I only want to save the Favourites I saved in my Android browser. I don't Sync them online ever as the last time I did thousands of bookmarks just disappeared.  ☺


问:
Access phone contacts by PC without USB debugging in android
My little sister entered my phone screen pattern incorrectly. My phone went to a screen that needs my Google account and password. When I enter them, it says that they are invalid. I am sure that they are correct (also I can't enable internet in that screen). I searched about it a lot and realized that this is a bug in android. I am prevented from unlocking my phone.
I can factory reset my device, but my contact list is important and I don't have any back up of it. Is there anyway to access it? Here are two solutions that may help to solve this problem.

I can access my device storage by connecting a USB cable. There are some windows apps that can access to contact list by USB like adb or Wondershare MobileGo, but they need USB debbugging to have been enabled. On my device, it is off and I can't toggle it because my phone is locked.

2.can i root my device in this state and after that solve my problem?

I can make a back up from my device. It made a .backup file on my phone storage. Is there any windows app that can extract data like "contact list" from that .backup file?


问:
Android phone as offline router
I currently use an old wireless router to connect two wifi devices.  The two devices connect to the SSID of the router, then the router allows traffic between them.  No internet connection/uplink is present.

Can I do the same with an android phone instead of the router?

I can't enable mobile hotspot since I'm not paying my carrier for this feature.  Paying the carrier might work but I shouldn't have to if I'm not using internet.

Also, mobile hotspot might block traffic between two devices on the mobile hotspot LAN, since the typical use case is to allow devices to contact internet but not necessarily each other.

Anyone figured how to do this?

HTC One M7, T-mobile 5.0 firmware, no root.

Title: Android phone as offline router


问:
Can't see most notifications on my phone until I unlock it. (Android 4.1.2)
My phone's an LG-E460. Sometimes, when I lock my phone, I stop getting most chat notifications (Whatsapp, Telegram, Google Hangouts...)

Happens specially often with Whatsapp, though. I'm talking to someone and if they take a long time to answer I lock my phone and keep doing my thing. No notifications. After a while, I check on them and BAM! 20 unread messages from ten minutes ago. When using Web Whatsapp I have to keep constantly unlocking my phone so it doesn't desync ("Connection with phone has been lost" pops up constantly).

This has been driving me insane. I've started to check on my phone even if I have no notifications just in case. What should I try?


问:
Options in Settings not persisting in Stock Android 5.1.1
I've Yu Yunique which comes with stock Android 5.1.1 installed. Some options in settings though being enabled in UI View aren't actually enabled.

For instance, take Blacklist option. When I switch it ON, and come back, it still shows

Blacklist

Disabled

When I click on Blacklist again, the switch is turned ON indeed, just that that isn't being reflected in the previous screen, aka Settings -> Security

I suppose the same bug is making most of the app locks not work on my phone. For instance, CM Security repeatedly asks me to

```<code>"Turn on the CM Security"
</code>```

and shows me the Apps with usage access option repeatedly, even though, I've already switched it on.

Being a first-time android user, I didn't expect such hurdles that too with Android Lollipop.

What's the solution to persist these changes for I suppose they're not being persisted or saved as of now?


问:
How to block a ssid on my android?
There ia a suspicious ssid near my house, i want to block the ssid ,not to display on my WiFi Hotspot list,how to set a blacklist on my android phone?
My android version is 4.4.</p>

Title: How to block a ssid on my android?


问:
How to display recent searches in the Google Search app?
When other people use the Google Search box on their Android device, about 3 items from the recent search history will show under the textbox. However, when I open the search box with my Google ID, nothing shows up.

I googled for this, and it seems all I can find are ways to disable recent searches. None of them solved my problem to enable recent searches. A couple that were somewhat relevant were all for older versions of the Google app. I am using the newest version, and everything concerning search history and privacy were turned on in my device.

So, how to display recent searches in the Google Search app?


问:
Bootloop on LG Volt (Virgin Mobile)
Main Problem: My phone is stuck on a bootloop, shows LG sign then turn off, keeps repeating all over.

Possible Cause to this Problem: System was updating but was taking too long (about 1 hour 20 minutes) so i restarted my phone, hence causing this bootloop.

Things iv'e tried:
Boot into recovery mode: Successful
Able to delete/wipe phone /cache: Successfull

**After i wiped/deleted phone to factory, i rebooted and still was on bootloop. I always wiped cache.

ADB Connection: Dont have much expir. in this but it has the option to use it: Unsuccessfull

By the way, my phone doesn't show up on my computer. Im basically stuck in a bootloop. Iv'e restored/deleted my device and rebooted but still was stuck in a bootloop. Did i cause this problem, if so can i manually download and install the update, i think thats what caused this loop.

Title: Bootloop on LG Volt (Virgin Mobile)


问:
Is it possible to set a http proxy & port on a personal hotspot connection
When an Android Phone is connected to a WiFi network, there is an option to set a manual HTTP proxy and port.

When user has created an personal WiFi hotspot ( sharing the cellular connection) there is no user setting where I can setup a manual HTTP proxy/port for the WiFi hotspot's connection, and the cellular HTTP proxy settings are ignored. I want HTTP from devices connected to the hotspot to be routed to an HTTP proxy/port.

Is there a way that I can achieve this?


问:
Huawei Mediapad M1 won't hard reset
I just bought a used Huawei Mediadpad M1 and it still has a lock screen from the seller. Unfortunately he won't write back any more so I need to hard reset it. I found in the forums these steps:

Switch off the device.

Press power button + Volume up button until the device is switched on (followed by a small vibration).

As soon as the device is switched on, let go of the power switch but keep pressing the volume up button.

After a few seconds, a screen will appear showing a green android symbol with rotating gears. When this screen appears let go the volume up button and keep pressing volume down button.

Hold like this for a few seconds. till a big green 'OK' appears on the screen.

I did and I also tried a few other things but this is the only method where I at least access the recovery mode (almost). Instead ot the big green OK i just get the opposite, a bit red FAIL.

The error message sais something about an SD card. Do I need to insert one for a hard reset? I actually can't imagine that since all the guides out there say to remove any SIM or SD card before hard resetting the tablet.

Thanks in advance for any suggestions!

Title: Huawei Mediapad M1 won't hard reset


问:
Find out when the memory card was removed
A very strange thing happened today. My roommate was complaining that his memory card went missing this afternoon. And now I found that my memory card is also missing. I don't know what to say.

It can't be someone staling it. If so he/she could have taken the phone itself or the two laptops in my room. Now I want to know when the memory card was ejected.

How do I find that? It should be logged somewhere in the system logs(dmesg), right?


问:
How to factory reset a locked Sony Xperia S
Bit of a dilemma, I have an old Sony Xperia S that I cannot get into as I can't remember the passcode to unlock it. I also cannot remember the gmail address that it was registered to so cannot reset the passcode that way. Anyone know of a way I can get into it? Or a method to factory reset without unlocking the phone? My iphone has failed on me, so currently phoneless!</p>


问:
How to reset default share target on Cogi app, G3, Android 5.0?
I shared a Cogi recording, and selected Gmail as the default share target. Now I want to unselect gmail as default. I can't find any place within the Cogi app itself to do it.

Also, I tried to clear app defaults via the Settings-->Apps and Settings-->Apps-->Reset App Preferences. In the Reset App Preferences, I don't see Cogi listed in the list of apps with any preferences to clear, and the Clear Preferences button is grayed out in the Apps menu entry on Cogi.

Anything I can do? (I haven't tried uninstalling/reinstalling Cogi yet)


问:
Configure & connect to Wi-Fi using ADB on Android 5.1.1
I'm using Nexus 4 with Android 5.1.1. I need to connect to Wi-Fi router in my automation. For that I need to use ADB interface. I connected to mobile using ADB. I also configured the wpa_supplicant.conf file and copied it to /data/misc/wifi/.

```<code>chmod 644 wpa_supplicant.conf
chown wifi.wifi wpa_supplicant.conf
</code>```

When I execute the adb svc wifi enable, phone doesn't connect to the SSID  I have specified in wpa_supplicant.conf.

I have created the wpa_supplicant.conf file using the existing wpa_supplicant.conf file. (Just to make sure I do not mess the format, but different SSID and password with same WPA-PSK method.)

Can anyone guide me what I need to change or what am I doing wrong?