问:
Which process is preventing me using Wifi?
I have a TV box provided by ISP (also TV channels provider), which has Android 4.4.4 Linux kernel 3.10.23. (I have root already)

It uses PPPoE to get a network so can receive TV stream, but this network has no Internet.
It also has wifi, which only works when PPPoE is down.

I want to make PPPoE and wifi work simultaneously, so get both TV stream and Internet. I did some test and find out there must be some process preventing wifi when PPPoE is on.

I use Linux laptop to setup an AP. I make box connect to AP on box's setting layout, when PPPoE on. I see this on Linux:

```<code>ap0: STA 74:97:81:xx:xx:xx IEEE 802.11: authenticated
ap0: STA 74:97:81:xx:xx:xx IEEE 802.11: associated (aid 1)
ap0: AP-STA-CONNECTED 74:97:81:xx:xx:xx
ap0: STA 74:97:81:xx:xx:xx RADIUS: starting accounting session E67960Dxxxxx
dnsmasq-dhcp: DHCPDISCOVER(ap0) 74:97:81:xx:xx:xx
dnsmasq-dhcp: DHCPOFFER(ap0) 192.168.7.125 74:97:81:xx:xx:xx
dnsmasq-dhcp: DHCPREQUEST(ap0) 192.168.7.125 74:97:81:xx:xx:xx
dnsmasq-dhcp: DHCPACK(ap0) 192.168.7.125 74:97:81:xx:xx:xx FF1004xxxxxx
ap0: AP-STA-DISCONNECTED 74:97:81:xx:xx:xx
</code>```

Connection sucessfully established, and even box has got IP from DHCP (I also see IP on TV for a very short time). Then soon disconnected.

If I unplug the cable, or turn Ethernet off in box's settings, or set a wrong PPPoE password, the wifi works.

How do I find out which process it preventing wifi?


问:
Facebook messenger 196.0.0.29.99 keeps crashing
I am using LG G6 Stock Oreo 8.0 and everything is working fine except Facebook messenger, it keeps crashing after a while without returning an error. I then took log from my phone and attached here. Please if anyone could read it and help me out to fix the issue. Facebook version below 189 and lite version are working fine. Only this version is crashing.

Logcat: http://saadtariq.net/logcat.txt

ContentLicense: CC BY-SA 4.0


问:
How can I change the default phone number for a contact?
I have seen this and this, but on my phone, a MotoG3 with Marshmallow 6.01 and what seems to be the built-in Contacts app (same version as the OS), long-tapping the number only gives Cut/Copy/Paste choices, and the extra menu has "Share" and "Lookup in Wikipedia".

Deleting the main number and adding it back made the other number the default, but there must be a better way?


问:
Incredibly low performance of Contacts app in Moto Z / Android 8
My 4 GB/64 GB/8 core Moto Z2 is incredibly slow when it comes to built in Contacts app. I.e.:

it requires at least 3-4 seconds to open it up,

it needs at least 2-3 seconds to exchange phone numbers with corresponding contacts in dial log.

It has nothing to do with the battery charge (happens all the time, on charge level between 10-100%) and has also nothing to do with overall system performance (both system and all other apps are working as fast as possible / expected; Contacts is the only problematic application).

I have 95 applications installed. None of them are performance-hungry and many system services (i.e. Google+, Google Assistant, YouTube, Google Drive, Google Play Music / Movies, Photos, etc.) disabled, because I am not using them.

Is there anything I can do to fix this problem (except for replacing Contacts with something else)?


问:
How to make Phone app show favorites and contacts on app startup?
When you open up the Phone app, it shows recent calls list (second tab) as the default tab instead of contacts list (third tab). This changed during the last upgrade.

How do I switch that back so by default it shows the favourites and contacts.

My stack:

Samsung Galaxy J7,

Android 8.1.0 Oreo,

Samsung Experience 9.5.

I am using default, system Phone app.


问:
Manage file type or application defaults in Android 8
I am using Solid File Explorer to browse my files. Each time I tap an image, it is opened in Google's Photos. I would like to know where this relation is defined in my Android 8.0 and how can I change it (i.e. should I modify  defaults of Solid File Explorer or Google Photos or both)?

I am asking, because both applications defaults' settings doesn't suggest such relation exists:

I.e. Solid File Explorer doesn't open anything by default and Photos opens only some links and no file types. And the "Clear defaults" button is disabled in both cases. So, I am a little bit stumbled on how does my Android 8.0 know that it should open images in Photos and how can I change it.

Both questions that I've read so far (this and this) are seven years old and covers a very old version of Android. So brings no help here.


问:
Termus/Python - How to mark unread SMS messages as read?
I made a simple SMS reader script with Python and Termux/Termux API (I use termux-tts-speak to read the messagees and execute the script from Termux). The script reads messages (with termux-sms-list) marked as unread. So I want to mark the messages as read after they are read by the script. How can I do this?</p>


问:
What are the privacy implications of apps that use Android System WebView?
From what I've researched, Android System WebView supports cookies and HTML5 local storage.

When do those cookies and local storage items get cleared?

For example, Samsung Messenger (Samsung's default SMS app) uses WebView to load web links (even in Android Nougat).  If the loaded web page generates cookies and HTML5 local storage items, will those items be available:

to every web page loaded within Samsung Messenger during that session?

to every web page loaded within Samsung Messenger during later Messenger sessions?

to other apps that use WebView?


问:
How to pick up the smallest distance for car?
I’m in a situation where even with forbidding motorway I’m ending up with a 110 Km deviation to the north or the south for driving straight to the east.

I want the shortest path in Km even if takes way longer and burn more fuel (fuel economic routes also have such high deviation).

The best way to achieve this is to configure for pedestrian mode (I checked in that case the route is almost a straight line instead of a curve with car mode whatever the guiding software). The problem is I’m not find taking stairs with the car.

So how to get the shortest path which excludes roads where cars can’t go through ?


问:
Google Pixel video camera keeps freezing and audio often doesn't get recorded
I have a Google Pixel running android Pie, and lately I've noticed that when I record video, the video intermittently freezes, and audio also intermittently doesn't get recorded, with an error message informing me that the mic is being used by another app. I've checked and no other app is using the mic. The video camera freezing happens maybe a few times a minute, and each freeze could be a split second up to a couple of seconds.

I've done some informal testing on CPU usage while using the video camera, and the top 2 processes (according to top) are the following:

android.hardware.camera.provider@2.4-service

com.google.android.GoogleCamera

The first uses about 60-75% CPU, and the 2nd uses between 20-30% CPU. Is this normal?

Another possibly related symptom is that taking pictures on my camera is also pretty slow, and it could take a few seconds while I wait for a just-taken picture to be processed before I can use it.

What could be causing the freezing?


问:
How to update wpa_supplicant to version 8
I am running LineageOS 14.1
I want to upgrade the wpa_supplicant so i can connect to my network with Management Frame Protection turned on.

I need to know how to update wpa_supplicant so i can connect to wpa3 when it get released with openwrt 19.01

This connecting to my network with my phone running android 8.1 has no issues connecting to my network with Management Frame Protection turned on.


问:
How I add a custom navigation bar button?
I see Android 6/7 I can to customize the navigation bar ("back", "home" and "recent" buttons). I can reorder, remove or add other pre-defined buttons.

I want add new custom buttom. By example, I want a "screenshot" button to avoid hold down+power to do a screenshot.

Is it possible?

EDIT: My devices are LG K10 (2016 and 2017 versions)


问:
How to disable sensors on-demand to reduce power consumption?
Nowadays, any Android device has a big sensor amount implemented. It is true that most of the sensors do not require a considerable amount of power for their operation. But the sum of the power consumption of the whole sensor set may be noticeable.

I already saw, some of the sensors are written/read through SPI interface by using linux SPI driver

So, is it possible to access the SPI driver at runtime to make sensors enter off/disabled/idle state to reduce power consumption? More specifically, I want to write/read SPI bytes through sysfs or command line

This should be achieveable in any rom, being rooted or with a custom kernel


问:
How to open collaborated iwork file in android
I hope that somebody knows a workaround to a situation.

Recently, I needed to share a numbers file with a large number of coworkers. I used the collaborate option and opened up the file for viewing.

Unfortunately, many of my coworkers have android phones and they could not open the file. The information is of a sensitive nature - the file is password protected. This error screen was shown :

(Click to enlarge)

So far I have had no luck finding a way to share this data well.

I have found an android browser that can display some of the data, but usage is very limited and buggy.

It would be a shame to move the data to a google doc/excel for sharing as the file is in a relatively complex format. Does anyone have any ideas or experience with this?


问:
Wrong date stored when taking a screenshot
I have a Galaxy Nexus running CyanogenMod 10.2.1 (IIRC that's the last official stable version released). Beside both being quite old they're working for years without any big issue, but yesterday I found something strange: since sometime between 2019-01-02T21:38:35-0300 and 2019-01-03T08:47:13-0300 it started storing wrong dates from screenshot creation times like this:

It's quite easy to understand how it's getting this weird date: it's taking the Unix timestamp and multiplying it by 1000. I tried to track down the issue by checking the source code: there was a change on GlobalScreenshot.java some years ago, although it don't explains why this bug started happening just now.

By now I only saw screenshots with the wrong date, so in the best case it will not cause issues to apps or other parts of the system. It's also not causing issues when synchronizing files using MTP (beside the date being something like "29 November, 1983").

Is it similar to the Y2K problem? Should I worry about this? If I should what can I do?


问:
tasker read numbers one by one
I am using this task to say loud numbers from SMS:

```<code>Variable Section: %SMSRB From 1, Length 6, Store Result in %SMSNUM
Variable Search Replace: %SMSNUM (?!^), Replace Matches, Replace With ,
Variable Split: %SMSNUM, Splitter ,
Say: %SMSNUM(1), Pitch 5, Speed 6, Respect Audio Focus
Say: %SMSNUM(2), Pitch 5, Speed 6, Respect Audio Focus
Say: %SMSNUM(3), Pitch 5, Speed 6, Respect Audio Focus
Say: %SMSNUM(4), Pitch 5, Speed 6, Respect Audio Focus
Say: %SMSNUM(5), Pitch 5, Speed 6, Respect Audio Focus
Say: %SMSNUM(6), Pitch 5, Speed 6, Respect Audio Focus
</code>```

It's working and my question is if there is more elegant way how to read number from SMS. If I wouldn't split it, it'll automatically read number as whole (thousands, hundreds, etc ..) and I want to have number read/said one by one. Also, I've noticed that there are pauses between numbers and I cannot find why, can it be configured ?

Title: tasker read numbers one by one


问:
Use bluetooth music system to play sound of phone calls
I have an Xiaomi Pocophone F1 with Android 9. Its currently unrooted but I would not hesitate to root it, if considered neccessary.

I have music systems capable to play music over bluetooth. Think of bluetooth headphones (without microphones!) for example. Unsurprisingly, they provide a much better sound quality than my phone's loudspeakers.

When I make/receive phone calls, I would like to play the sound using these music systems but still speak into the phone's microphone. Could anyone please hint me how this can be achieved.


问:
Bluetooth: one device for input and one for output
Good morning everyone!

I am wondering, is it possible on Android 9 to use a Bluetooth headset as voice input and a Bluetooth speaker as output at the same time?

Context: I need to run my voice through a modulator!


问:
Fingerprint sensor on Samsung Galaxy Wide 2
My phone, Galaxy Wide 2 (SM-J727S) is a device made for students in South Korea, and it blocks internet, wifi, mobile data, and stuff like that (maybe an irrelevant information, but anyway).

This "student" version of the Wide 2 is only sold in South Korea, and I'm not sure if you fellas could find any information about my device. (I live in South Korea, so my grammar might have some mistakes.. forgive me)

While I was researching about my device's specs on the web, I learned that it has a fingerprint sensor under the home button. But, I can't find any fingerprint unlocking option in the settings. I'm not sure why.

Did the software hide it? (The student version adds Knox Customization, and that's the part that disables the internet stuff. It doesn't show me Developer settings menu even after I did the revealing process of hammering the build number, but simply doesn't show up!)

I'm leaving some software information that might help you, and links of some spec pages that confuses me.

As far as i know, the South Korean version and US version are different in specs. Some sites says there is a finger print sensor, but some says there isn't.

SOFTWARE INFORMATION

Android 8.1.0 Oreo

Samsung Experience 9.5

Knox version 3.2 / knox api level 26 (?)

Links

https://droidchart.com/en/samsung/samsung-galaxy-wide-2-sm-j727s-3045

https://namu.wiki/w/%EA%B0%A4%EB%9F%AD%EC%8B%9C%20%EC%99%80%EC%9D%B4%EB%93%9C2 (use KR->Eng translation plz)

https://www.pdevice.com/product/samsung-galaxy-wide-2-j727s-price-specs


问:
Copying files from Windows PC to Android denied with error message "unsupported file type"
I bought Moto G6 Plus with Android 8 and I want to restore some files which I backed up from my older phone, Moto G (1st Gen.)

I connect the phone to my Windows PC via a USB cable and enable in the phone: Use USB to Transfer Files. I can send .mp3 files. I cannot send (paste) a .vcf file (my contacts) and .png images (screenshots). The message I get is:

The [filename.ext] file type is not supported on this device. If it is a media file, you may be able to use Windows Media Player to convert the file to a playable type prior to transfer. Do you wish to skip this file now?

And I get Skip/Skip All/Cancel options only.

But I can get any file type from the phone and into my PC which is weird.

Am I doing something wrong? How can I fix this? (preferably without having to install another app).


问:
microSD card performance issue
I have some microSD cards and I noticed a weird behaviour: larger microSDs give lower results!

For example, using them on my Note 8, I get these results:
Code:

```<code> 64GB -> R: 70MBs W: 35MBs
128GB -> R: 60MBs W: 30MBs
</code>```

While if I test them on my PC, I get the same performance:
Code:

```<code> 64GB -> R: 80MBs W: 40MBs
128GB -> R: 80MBs W: 40MBs
</code>```

*same brand, same model, only size differs
**tested with multiple microSD cards

Why?

Honestly I'm shocked about those results! I always knew the opposite: larger storage (microSD in this case) gives better results[1]...

Does this do not happen with microSDs too?

Title: microSD card performance issue


问:
Can't unlock my phones bootloader
I'm using a local branded chinese phone. And my phones comes with locked bootloader. As it is a local branded phone, manufacture doesn't provide a official way to unlock it! I've tried many way I found in Google. but non of them work. It always ended up like the picture. Can anyone help me unlocking my phones bootloader?

Title: Can't unlock my phones bootloader


问:
how can I download lyrics for audio files?
In the past and in others platforms I was used to plays mp3 and downloads txt/lrc lyrics from internet

how can I download lyrics for lacally stored mp3 files?

The app minilyrics for android is failing on my device and also it seems that was removed from Play


问:
How to move navigation bar to the right in landscape mode?
I just got a Pixel 2, running Android 9. I've noticed that when I turn my phone landscape, the soft keys always go to the "bottom" of the phone, which is sometimes on the left of the screen. I'm used to the behavior of the soft keys orienting themselves on the right side of the landscape, no matter which way is up, like on Android 7 (I was using a Nexus 5 before this). It's hard for me to use my left hand on the keys as I am not used to it, and I'm used to swiping in from the right to bring them up as well.

Is there a way to adjust this setting?


问:
How can I modify serial number on an off brand tablet?
I am trying to connect to a tablet with Android Studio.  The tablet is a Fusion5 Tablet F704B.  It's a low cost tablet with Oreo 8.1 OS.  I only have this tablet connected to my PC.   Android Studio does show 1 connected device, but it is labeled only as "Unknown"

When I hit the run app button in Android Studio, the gradle builds fine and then I see a "Error Installing APK"

I do more debug and run "adb devices" I see:

Note:  On the tablet, I do have developer mode enabled and have USB Debugging enabled.  I have tried USB Configuration to Charging, MTP, PTP, and USB Ethernet and nothing allowed allowed adb devices to see the tablet serial number.  I have also tried Multiple USB cables to connect the tablet, and that did allow the tablet serial number to be shown.  I have also connected other tablets I own, and they all show a serial number correctly.  I can run my app via android studio on 4 other tablets that I own.  Just not on this Fusion5 tablet.

I believe the lack of a serial number in this Fusion5 tablet is causing my issue with Android Studio.  After some research, I found that the serial number is contained in the tablet OS at /sys/class/android_usb/android0/iSerial.  This file needs root access to edit.  Using "adb shell", I can navigate to the directory, but can't view the file contents without root access.  I believe the file is has no content.  I believe this because the value iSerial shows as blank when I do a "lsusb -v" on my computer.

I have spent many hours researching how to give my tablet root access, but the first step involves loading the TWRP recovery image.  The twrp recovery images exist for many phones/tablets, but not for this odd offbrand cheap tablet.

I have also tried to bypass TWRP and perform an adp sideload , but fails with the default recovery routine that comes with my tablet.

Does anyone know of a way to edit the serial number field without root access?

Or is there some other clever way to get me root access I am missing?


问:
Is there a way to make an app executable only by the system on android?
I'm trying to make an app executable only by the system or by root on android so that when the user tries to open it (for example, by tapping it) he gets permission denied. Is this possible on a rooted android device?</p>

OwnerDisplayName: Deci


问:
Android 8.0.0 settings remove suggestion
I am using Nokia 3 with Android 8.0.0. Whenever I open settings option, suggestion option display first, so every time I have to swipe and remove it. Is there any settings, that removes suggestion in settings option.

Please check screenshot and see what am I want. I am asking about in Settings App, not about top of menu which shows most used app.


问:
How can I merge my friend's new phone number in WhatsApp without losing all the chats history (merge chats from two different numbers to one number)
I've been using WhatsApp with my best friend for years and he swapped his prepaid simcard (old phone with with number = X) with a new prepaid simcard (new phone with number Y) recently.
When he sent me the first message using the new phone with number Y, I received a new chat window because his number Y was not registered on my phone contact's list.
When getting this new chat, I blocked the number because it was unknown to me.
When he gave his new number Y, I added it to his contact record on my phone but chats didn't merge together and this is not what I had expected, because now I have our two separate chats: the old one and the new one.

How can I merge the 2 chat windows together and keep only the one with the whole chat/calls/medias history?

Thank you,
Bruno

Summary : Is there any way to Merge two different WhatsApp chats into one single chat ?
Practical issue being someone used two different numbers to text.


问:
Apps background data consumption notification?
Details: Samsung Galaxy On Max

Android: 7.0

Carrier Network: Airtel

Country: India

I am using my device normally and suddenly when i saw message icon, i dragged down notification panel and it looks very weird.
Screen got freezed after dragging notification.

I noticed two icons at the bottom one is of tunnelbear and second is unknown. I uninstalled tunnelbear immediately but problem still persists.

Reboot helps device to get normal but then i checked that message and it is that " You have used 90% data of daily limit."

I frequently use around 1GB a day but today i didn't use my device so checked for 'data usage' of today under settings but there is no option or info.

It is showing only for month usage.

What causes my device to react abnormally ?

How can i check for where data was consumed ?

How can i set notification if any app uses a chunk of background data ?

What is that '????' Next to tunnelbear ?

I know that's a lot of questions but this is very weird behaviour of the device.


问:
How do I verify my second-hand phone is 'clean'
I have just bought a second-hand Android phone (Samsung) and would like to check that there's nothing nasty on there before I start using it in earnest. It's my first smartphone! I have some experience with Linux Mint, but not a lot.

I've compiled a list of the apps installed (not system apps) and I would like to understand the origin of each and, on a superficial level at least, the purpose of each. I'm finding it hard to find some of this info, e.g. what is 'OM Customize'. Is there a good encyclopedia of Android apps out there that I've missed so far? I could post the list here if anyone can help?

The phone was very cheap, and I'm wondering whether there's some security tool I should use to check it, and potentially whether I should look at rooting it. My main usage at the moment is actually just going to be as a GPS tool and note-taker, so not particularly interested in the 'normal' bells and whistles applications.


问:
How do I spell out period using Google voice recognition?
While using voice-to-text to transcribe notes to Google Keep, I realized whenever I said "period" it would put out the punctuation mark. This is great 99% of the time, but sometimes I need to say period, e.g. "3rd period," or even "comma."

While a relatively easy workaround is to use the plural form "commas/periods" and edit things later, I'm wondering if there is something in the settings that I missed that can be tweaked. Settings::Language and Keyboard::(Google voice typing or Text-to-speech output) are the two places I looked.


问:
USB tethering without a SIM card
Why isn't this allowed? I'd like to use my brother's old phone to get on the Internet. It's the same model as mine (ZTE ZMAX PRO). He just recently passed away, and his last phone is being returned to the carrier.</p>

Title: USB tethering without a SIM card


问:
Ant+ hardware support broken in Android 9?
Recently, my Xiaomi Mi A1 received an update to Android 9, and since that I figured out that Ant+ is not working anymore (which did work pefectly using Android 8).

Ant Radio tester from the Google playstore says that no built-in ANT was found, the services are all installed correctly however.

First I thought this is a problem only related to this Xiaomi model, but in the meantime I am convinced this must be something related to Android 9, since also users of other brands (including Nokia and other Xiaomi phones) report the same after updating their phones to Android 9.

So the questions simply are:

1.) did Google break Ant+ support in Android 9?

2.) How can this be fixed?


问:
Disabling sms delivery report globally in android
I know we can enable/disable the sms delivery report in the messaging app.
But is it possible to disable it for all apps?

I use an app that sends sms to control a device and I guess it's using the delivery report and does not have anything in its settings to disable the usage of the delivery report, which gets charged additionally by the mobile operator. I would like to be able to deny the app to use the sms delivery report by using android settings or some additional tool(s).


问:
How to maintain the gateway IP of the Android access point?
I realized that the IP address of the access point router changes every time (Android 9).

I have to change the routing table of my device connected to the AP every time

How to freeze the IP of the AP gateway ?

Thx

EDIT:

I use my android phone as hotspot.
I connect to it from my PC equipped with a wifi key.
From my PC, my routing table for this network interface is:

Net. Dest   Netmask    Gateway          Interface         Metric
0.0.0.0     0.0.0.0    192.168.43.166   192.168.43.102    600

192.168.43.102: Is the IP address of the wifi key of the PC connected to my Android hotspot.

192.168.43.166: The gateway changes, it's never the same with each new connection to the Android Hotspot


问:
Changing app permissions
I am using Bluestacks to play a game.But every time i try to play game "Mini Motor Racing" it shows;

I also went to settings >Apps >Mini Motor Racing > but there is no selection of permissions so i can't change permission.I also search for it on google but nothing helped. Plz guide me if u can thanks bye.

Title: Changing app permissions


问:
Android OS (Phoenix OS) restarts when i insert headphone in 3.5mm jack
What I have tried:

I have tried USB earphones and mic, both works perfectly, So it should not be Sound/Audio issue in Android.

If I keep earphones plugged in during boot, PC shuts down at "Initializing" Step. So I think it's a kernel issue. But there is no stacktrace in last_kmsg.

I have tried logcat and bugreport to get some information about this. Logcat has no error or even output between inserting jack and System crash.Bugreport have too much information and I am not able to find anything about crash.

/proc/last_kmsg doesn't exist. /dev/kmsg has output regarding other usb devices/apps. But, it fails to show/save anything in the output after connecting jack. It just shuts down.

It is not a hardware issue, because both windows 8.1 and xubuntu 18.04 are running without any mic/audio problem in same laptop.

UPDATE 1:
It is now confirm that the issue is in android 7.1.1 x86 build, Specificaly with kernel.
I tried Default Androidx86 7.1.1 build, redmi os, prmieos. All are based on 7.1.1 (nougat) and had this bug. But Android x86 8.1 oreo builds seems to have resolved this bug. Now, I need to wait for phoenix os to upgrade.
One thing i tried is to replace the phoenix nougat kernel with android orea kernel and it booted fine, but no drivers compatibility. Graphics, audio wifi didn't work. I need to replace files too, but i have no idea which one.

People on XDA forums has done it, But I couldn't achieve that possibly because I don't have that much Knowledge about this.

How can I succesfully update kernel and drivers?


问:
How to uninstall an app which restarts the phone when uninstalling it?
This app named Handwriting Fonts for Samsung, Oppo and HTC phones is acting like a malware. Whenever I try to uninstall it, my phone restarts (or probably reboots) and the app doesn't get uninstalled. When I checked the reviews, there were other people too having the same issue. </p>

<p>I have tried uninstalling it from Google Play also. I have tried forcing stopping it; clearing data and then uninstalling it; using safe mode to uninstall it. No progress. </p>


问:
Disable star button in chrome address bar
On some websites the chrome browser on Android shoes an icon with an open circle and some stars

Is there any way to remove this?


问:
Is it possible to control refresh rate/frequency of Android phones camera
I recorded a video of my TV screen using my android phone's camera but I was unable to stop the flickering TV screen. I tried different modes and effects in the camera app.
On searching for the reason I found in this Superuser post that the reason for this is difference in refresh frequencies of the TV screen and the camera.
So is their any way by which I may adjust the frequency of my phone's camera?</p>


问:
Use multiple Google accounts, but allow only one to locate my phone in device manager
My question is basically identical to this question from 2016 (I would have commented on it but I don't have sufficient reputation):

How to use multiple google accounts, but allow only one to locate my phone in device manager

I would like to know if there is a way to have two Google accounts added to my phone (one personal and one work account), while only allowing one account the ability to Find My Device and perform a remote wipe.
Has anything regarding this changed since 2016?


问:
Automatically run Greenify from Macrodroid
As a way to save battery drain, I set up a macro with MacroDroid that does the following:

Trigger: every 2 hours

Action: kill background process, launch Greenify

Constraint: when battery is below 50%

I would like to not only launch Greenify, but also run it and then close automatically. I suppose it is possible to do this within a script, but I absolutely have no idea about this.

Another question is: if I kill background processes, is Greenify redundant?

Relevant information:

Android version: 8.0

Phone model: SONY Xperia XZ2 (default launcher)

Macrodroid version: 3.30.3

Greenify version: 4.3.3.0

Thank you.


问:
Disable specific apps access to stock browser?
With a productivity lock in place with an access code that is set by someone else, the phone user cannot directly open the "stock browser" unless Android asks:

Sign into public wifi network

if I happen to connect to such a network that requires signing in. That is as intended, At the same time I am trying to disable the user access to the "stock browser" from any other app such as Slack.

To be clear: Slack has a button that disables opening links with the "stock browser", but that does not prevent the user access to the "stock browser" as the user can go to settings>advanced settings>flip that button that prevents access.

Therefore I have the following question:
How can one prevent certain apps from opening the "stock browser" in  LineageOS 14.1?

Currently my options consist of:

Modifying all apps to such an extend that that function is not possible to re-enable once it has been disabled.

Finding a setting that allows only specific apps to open the stock browser.

Finding an app that enforces such control settings.

Neither of the 3 approaches have yet led to successful blocking of "stock browser"-access.


问:
Microphone not working when connected to Bluetooth FM transmitter

When connected to my FM transmitter, I am able to hear audio from calls but they can hardly hear me.

Similarly, if I want to use Google Assistant, I have to shout. I believe the issue is that a microphone on the transmitter is being used as opposed to the microphone on my phone, and this microphone is bad. However, this has always been an issue, even when the device was new 3 years ago.

I can't seem to find info on the exact model of transmitter that I have, but this was the title on Amazon: Car FM Transmitter W 2.4A USB Charger, Nulaxy™ 2015 Newest Wireless Bluetooth FM Transmitter Car Kit for All Smartphones, Tablets, MP3 Players
Sold by: DinoSonics

It seems like there should be a setting for choosing which microphone to use when connected to a Bluetooth device, but this doesn't appear to be an option. For reference, I am currently using a Pixel 3, however the same issue was present with a Pixel 2, Droid Turbo 2, and Galaxy S5, obviously on many versions of Android. If this is the wrong board to ask this question or if any more information is needed, let me know.


问:
Adding notes/tasks not working in Google Assistant
When I say "note to self" or "add a note" (or "note to self buy milk"), Google should be directing that command to one of the apps that accept note commands, including Todoist, Any.do, Keep, Gmail, etc.

However, on my primary personal account, commands never get directed anywhere except to what looks like some minimal built-in note service, and there's no way to change the default app.

Here is a video of the expected behavior (using Google Assistant with a different account than my main personal account). Note that just "note to self" results in a response that displays an app icon that you can click on to change the default note app, as described elsewhere on the web.

The expected behavior is also what other people I've asked experience on their phones / on their own accounts, and is corroborated with discussions elsewhere on the web.

Here is a video of the problematic behavior, when using Google Assistant on my main personal account.

I've already tried a number of things, including:

Deleting all local data associated with the Google app and re-setting
up Google Assistant.

Resetting my default apps in the phone settings.

Removing and re-adding my Google account to my phone entirely.

I suspect that this may have something to do with Google Home, since that minimal notes service seems to be associated with Google Home when I search the web for info on it.  It's not even listed as an available app in that first video.

Any ideas how to fix this? Thanks tremendously in advance!

(I'm also aware that—for Todoist at least—you can drop into a "talk to Todoist" mode (app listing page) in Google Assistant, which is not what I'm asking about here—I just want to be able to fire off reminders in a single command, and also to apps other than Todoist.)


问:
Is there a way to backup "drivers" the same way we do on PCs?
I have a dual-booting Windows 10 tablet that has an Android side. I want to wipe it clean including the Windows side and fresh install PhoenixOS on it. I poked around PhoenixOS but the touch screen, accelerometer, WiFi, Bluetooth, and audio doesn't work on that device with it installed.

I was wondering if there's a way to backup drivers from the original Android installed so I can add it to PhoenixOS and make those features work again? I'm not that familiar with Android terms so all I know is how it's done on the PC.


问:
How to access an encrypted external SD card with all apps?
I have encrypted both the device and the external SD card of a previously unencrypted Samsung phone running Android 6.0.1.

After encrypting the SD card, apparently some apps can not access the files on the SD card unencrypted.

Specifically, image viewers, media players, some stock document viewers and MTP transfer work, i.e. they can acces the files decrypted. Howevery, a text editor, K9 mail, the Signal messenger, Open Keychain and some cloud sync apps can only acces the encrypted file content. This means I can not send the original, unencrypted file via email or messenger, and I can not edit local text files.

Expected behaviour would be that Android transparently decrypts and encrypts local file contents when an applications wants to read and write these.

Is that a known problem? Maybe specific to Samsung?

Do apps have to implement some special logic or functions to gain acces the unencrypted file contents via Android, i.e. is that a bug that the respective developers can fix?

And is there a way I can provide the unencrypted file contents to any app?


问:
Sharing crashes in all apps
The sharing function in all apps crash on my phone. No matter what app I use, as long as I click on the share button, the app crashes and restarts before showing the list of apps I can share with.

My phone is a Huawei Honor 9 and the OS version is 8.0. I am an Android developer so I tried to get the exception from Android Studio:

```<code>E/AndroidRuntime: FATAL EXCEPTION: ModernAsyncTask #1
Process: com.google.android.apps.photos, PID: 19271
java.lang.RuntimeException: An error occurred while executing doInBackground()
    at pu.done(PG:5)
    at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:383)
    at java.util.concurrent.FutureTask.setException(FutureTask.java:252)
    at java.util.concurrent.FutureTask.run(FutureTask.java:271)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
    at java.lang.Thread.run(Thread.java:784)
 Caused by: java.lang.NullPointerException: Attempt to read from field 'android.content.pm.ApplicationInfo android.content.pm.ComponentInfo.applicationInfo' on a null object reference
    at android.os.Parcel.readException(Parcel.java:1960)
    at android.os.Parcel.readException(Parcel.java:1900)
    at android.content.pm.IPackageManager$Stub$Proxy.queryIntentActivities(IPackageManager.java:3621)
    at android.app.ApplicationPackageManager.queryIntentActivitiesAsUser(ApplicationPackageManager.java:937)
    at android.app.ApplicationPackageManager.queryIntentActivities(ApplicationPackageManager.java:926)
    at aham.d(PG:7)
    at pi.d(PG:3)
    at pi.b(PG:19)
    at px.call(PG:5)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
    at java.lang.Thread.run(Thread.java:784)
</code>```

It seems that this NullPointerException

```<code>java.lang.NullPointerException: Attempt to read from field 'android.content.pm.ApplicationInfo android.content.pm.ComponentInfo.applicationInfo' on a null object reference
</code>```

is the cause to this problem.

I believe it's not the app's problem (in this case Google Photos) because it occurs in every app. So is it a system problem or is it caused by some other app I have installed? How can I find and uninstall that app if it's the latter case?

Title: Sharing crashes in all apps


问:
Xperia L not booting to TWRP
I installed TWRP in my rooted Sony Xperia L using the TWRP Official App. The app said that the flashing was successful. Then, when I give adb reboot recovery command, it boots into the stock recovery. Even when I try to reboot into recovery from the TWRP Official App, it boots into the stock recovery.
There is no TWRP whatsoever. Even when I try to boot with the hardware keys and/or fastboot, it either shows a blank screen with the blue notification LED ON or boots into the stock recovery. Please tell me what to do...</p>

Title: Xperia L not booting to TWRP


问:
USB cable not working
I'm using MacBook Air(MacOS Sierra) and have installed Android File Transfer on it.

The problem I'm getting occurs sometimes and works well the other time.

When I connect my phone with my PC with a USB cable, no option is shown on the phone screen about the "Use USB for" which should show 3 options:

Charging only

Transfer Files(MTP)

Transfer photos

Rather the phone starts getting charged without the above option occurring.

As mentioned above, this problem occurs sometimes but not every time.

I've also selected the "USB Debugging feature to tackle with the above problem but it doesn't seem to help.

What should I do?

Title: USB cable not working


问:
Remove Google Play Services from no-root Android 8.1 phone
How does user remove the stubborn 'Google Play Services' from the Android phone? Android 8.1 'Google Play Services' does not allow remove updates option. Why does 'Google Play Services' behave similarly like the Microsoft Edge web browser that is stubborn and can't be removed.

User buy the Android phone should not be denied from uninstall stock apps such as the notorious 'Google Play Services' that use data usage without user permission!

Please do not provide answers such as root the android phone because this question is about no-root phone (meaning the phone is not rooted). Also,  PoGO has new TOS that does not care about user privacy!


问:
'Can't take screenshot due to security policy.'
As you know that some sites/apps don't allow to take screenshots with a flashing message 'Can't take screenshot due to security policy.'

Is there anyway to get screenshot from these sites/apps ?


问:
Reset Partition Table for Nexus 7 2013 (Flo)
To cut a long story short I wanted to make the system partition larger on my tablet PC as it's far too small to do anything practical on. I used ADB push to put Parted into the root directory and proceeded to resize some of the partitions, but it has failed terribly to the point I have bricked my tablet. I have luckily enough found some guides on the internet to after I got QHUSB_BULK in Windows Devivce Manager. At the moment I have managed to execute the command

```<code>fastboot boot twrp-3.2.3-0-flo.img
</code>```

but this is temporarily running from RAM as I'm unable to flash any of the partitions as they are "missing".

This is the my original partition table:-

https://pastebin.com/rhhjZtef

From some reading on the internet Linux can only have 4 primary partitons. I'm no expert in Linux. I know some basics but partitions is out of my area of expertise. All I know is that I have 30 partitions that I need to re-create and I don't know what partition type to set them to; primary, logical or extended.

I've played around with the three partition types but I get an error message saying "Too many primary partitions".

Could someone shine some light here please?

Many thanks

Will


问:
How can I set the screen to turn off during a video?
I want to set the screen to turn off during a video from the gallery if there are something about 30 seconds without any touch,
How can I do that?
Is root necessary?

My android version is 9.0.


问:
How do I share something to a list?
I frequently make lists of things, e.g. in Google Notes. I'm looking for a way to share anything (with a share button) to become a new item on a list. The app doesn't matter, as long as it lets me in turn share the whole list. Is this possible? </p>

Title: How do I share something to a list?


问:
Error mesages after uninstall samsung scloud and youtube
After uninstalling Samsung bloatware (*) (using root), I am receiving the errors "Unfortunately com.samsung.android.scloud has stopped"
and "Unfortunately com.google.android.youtube has stopped" even if what an doing has no relation with youtube.

Every time I try to use the camera I receive many scloud error messages.why?
Is Samsung connecting to their cloud server even when this function is not used?
Should I remove(as root) the other system Samsung apps (S.Link, S. Print, S. push,...)?
What is trying to launch these deleted apps?
Is the any startup/triggers list from where these apps can be launched?

(*)(If not bloatware, at least for me they are non desired apps and installed as system apps).


问:
How can i change default user of ADB daemon
When i use adb shell i am logged in as user shell who is in lot of groups and have a lot of permissions. My question is if i can change default user which ADB daemon use to have less permissions. For example to use application user. Is this possible without rooting device?


问:
Bug: Oreo keeps changing the notification sound for all apps instead of just one
When I try to change the notification sound for an app (e.g.: WhatsApp), Oreo (Android 8) sets the new sound as the default notification sound (changes the default notification sound for the device). What should I do to surpass this problem?

I have already tried a hard reset.


问:
Application loss problem
Why are applications lost when rebooting?

In every reboot this happens

Note: The LG G4 suffers from other problems such as the sudden stop of the Power button and also the high brightness ratio at reboot, which requires manually resetting the automatic light

Divce name : LG G4 H818P

Processor : Snapdragon 808

Version year : 2015

Version system : 6.0 marshmallow

Title: Application loss problem


问:
Android Terminal does not work immediately after reboot
jackpal.androidterm  does not work immediately after starting the phone.

Instead, it first just shows a blank screen. Then I need to wait around 20 to 60 seconds. Then, the terminal's prompt is enabled.


问:
Downloads start minutes after clicking the button
Recently I've been getting an issue that when I start any download from an app such as the Play Store or Google drive, when I click the download button I get a indication that the download has begun but the actual download starts minutes after the button has been pressed. For example, if I try to download a file from Google Drive I get the snack bar stating "File will be downloaded, check notifications for details" but the actual download starts after a few minutes. The Play Store starts downloads after a few minutes in which the notification indicates that the download is complete, but when I go into the Play Store's Installed tab the app download is stuck at around 25%. I haven't faced a problem like that before. Chrome downloads are working fine.

Things I've tried,

1) Deleting cache and data of Play Store, Drive and Downloads app.

2) Uninstalled updates of the above apps.

3) Wiped Cache from Recovery.

4) Tried downloading from Safe Mode.

5) Did a factory reset.

Specs:

Model: OnePlus 3

Android Version: 8.0.0

OxygenOS Version: 5.0.8

Any help regarding this would be great!


问:
Clone userdata from xcover-3 to xcover-3ve g388f -> g389f
I have some very special questions for you.
My friend gave me a broken xcover-3 g388f.
He wants the data on it, so I "Chip off" the internal memory and read it out with a  chip reader. Now he came to me with a newer Xcover-3 model, the g389f and want his data on it. Is there a way to copy the userdata like phonecalls, adressbook and aps from the imagefile of the userdata area on the new model?
I´ve made a backup from the newer phone with twrp an if I compare the two userdata partitions the newer has a smaller size than the older g388f.

Is there a way to mount the backup from the g389f in linux and copy files into it from the chip-off image and write it back to the phone?

Thanks in advice, hope someone can give a good answer.


问:
How to record High quality audio in android?
I have tried many android application to record voice, but they're quality is not great, often it muffles the sound, as a result of forced noise removal.

But surprisingly, the video recorded from the stock camera records much much high quality sound(no distortion).
So is there is anyway to utilize this fact?

The device is a Asus Zenfone Max pro M1 (ZB601KL-4H070IN). Android Version: 8.1.0


问:
Android Studio: Can't add sdcard to AVD using external file
I've just recently moved to a new laptop (Migrated from Windows 7 to 10) and I'm now setting up my development environment for android. As such, I've created a new AVD using Android Studio. However I can't add an SD card using external file, as the option is greyed out. I'm using the same AVD Setup as in my old environment (except that it's newly created).

I've read that for some people the option remains disabled until they've run the mksdcard tool, I've done this and restarted however I still can't add the SDCard of my old device.

Also tried creating an AVD with different settings, no changes. Any ideas?
Excuse me if this post is more in-scope for stackoverflow or superuser!


问:
ADB no device Nexus 5
On my Nexus 5 (LineageOS 15.1 / Android 8.1) i can't see my device when typing "adb devices" (manjaro with Android SDK 3.2.1). What I tried:

root access: "ADB only"

android debugging: "on"

revoked usb authorizations

usb configuration: "MIDI"/"AUDIO"/"Charging"/"MTP"/"PTP" (tried each)

restarted device connected and also connect after restart was done

changed USB Cable

inserted udev rules (like on arch wiki)

all of this in a root shell

"lsusb" is not listing the device if I have android debugging on. If it's off i see it. (as soon as i switch it on it disappears).
I don't have Windows at the time, so would this help?

What can I try next?

My goal was to install ubuntu touch in dual boot mode.

Title: ADB no device Nexus 5


问:
Unable to Decrypt SD Card after reboot my Samsung s7 Edge?
I moved my important files in Encrypted SD card from my Phone & removed SD card for reboot the phone. After complete the reboot i am unable to find my files in encrypted SD card. When i put my SD card in same mobile which i use for encrypt SD card so it says
" This SD card can't be decrypted because it was encrypted in other device. SD cards can only be decypted on the device used to encrypt them. Decrypt the SD card on the device used to encrypt it, then reinsert in this device, and try again."
I have too much important data if anyone can help me to come out from this problem then kindly let me know.

Thanks.


问:
FBE - Why does each user get a separate DE key
I've been reading about how File-Based Encryption and Direct Boot work. There's one thing I don't understand.

According to https://developer.android.com/training/articles/direct-boot

Device encrypted (DE) storage contains data encrypted with a key that is only available after a device has performed a successful verified boot.

If I understand correctly, if an application stores data in DE areas, that data is available after the device boots up even prior to any user authentication (i.e prior to the device being unlocked).

Then, according to https://source.android.com/security/encryption/file-based

Each user in a multi-user environment gets a separate encryption key. Every user gets two keys: a DE and a CE key.

...

An application may be able to interact freely across the DE areas, but one user unlocked does not mean that all the users on the device are unlocked".

Question: If an application has access across the DE areas, what is gained by generating a separate DE key for each user?

Potential answer

Initially I assumed that user in the above quoted sections refers to a physical user as described here

User. Each user is intended to be used by a different physical person.

But user can also refer to an application user as described here

The Android operating system is a multi-user Linux system in which each app is a different user.

So I'm thinking:

When an application stores data in DE storage, the data is encrypted using the application user's DE key.

When an application stores data in CE storage, the data is encrypted using the currently active physical user's CE key.

If the above is correct, A physical user's DE key and an application user's CE key is never used.

I don't know if the above makes any sense so it would be great if someone with the appropriate knowledge would chime in.


问:
How can an app know that my phone has been rooted?
I changed my bank and it seems that the only possible way of accessing their online website is having installed an app called "tan2go dkb".

I've read that it is not possible to use it with a rooted phone. I won't change my phone just because the bank says so, so I tried to use an old motorola moto g 1st gen.

I erased everything, and flashed the stock rom, I also tried to flash a stock firmware. After flashing the new stock ROM I install some apps to tell if I'm still root and they say I'm not.

So, which kind of check are they doing in order to tell that my phone is rooted even after flashing a clean stock ROM?


问:
How to restrict games installation
I am a iPhone person and my wife is andriod. Our son has been madly installing games despite me hiding the play store icon in a folder he manage to find it. I went into playstore setting but the restriction is so confusing, basically what I want is our son not installing ANY games unless we want by parental code.

How Can I do that?

Title: How to restrict games installation


问:
Is there a Low Quality / Headset audio mode and why to disable it?
My Bowers & Wilkins P5 came with 2 cables: One- for IOS and its control and another generic one without any control.

I made the terrible mistake of not pay attention and connected with the IOS cable. Immediately the Zenfone 3 entered what I can describe as a low quality mode. It looks like that Zenfone is trying to connect to a headset communication device instead of a hifi headfone. Immediately I recognized the mistake, changed to the generic cable and Zenfone recognized the headfone and quality came back to what is supposed to be.

However, after this incident Zenfone started to randomly goes back this "headset/low quality" mode. At first a simple re-boot would fix the problem. After that re-boot not worked anymore.
Only solution was to do factory restore. That worked well for a month but today my fone wake up back in "low quality mode".

Is there any other workaround to get out of this annoying mode?
Tested on B&W P5 and Grado SR125.

Any input is welcome....


问:
Google Pixel XL Messages app missing camera interface
I reset my Google Pixel XL and temporally set it up as new device, meaning I did't restore any of the settings from before reset, therefore it is safe to assume I used all default settings.

During this time, I noticed the Messages app having a camera interface button next to the plus sign (see image) which when pressed, a small camera preview displayed allowing you to snap a quick picture.  I then reset the phone again, this time restoring old phone's data.  Now the above mentioned camera interface is gone and I don't know how to get it back.

Thanks,


问:
How to get Android connect to weak WiFi signal
I have an IoT device (a LifeX Color 1000 bulb) which I'm trying to connect to my home Wifi network.

But to do so, I have to:

Factory-reset the bulb so that it goes into setup mode

Connect to the Wifi Network emitted by the bulb

Tell the bulb the wifi credentials of my home Wifi Network.

The problem is that the bulb's Wifi signal is very weak. It doesn't show up on my Android phone's list of Wifi networks. And when I tell LifeX app on my phone to search for the bulb's Wifi, I get this error message:

But I see no setting in which I can tell my phone to stop ignoring weak Wifi signals. There is no "Avoid Poor Networks" or "Auto Network Switch".
I have tried this on both of the following phones:

ZTE Model Z981, Android Version 6.0.1

Nokia 6.1 Model TA-1045, Android Version 9

How can I adjust my phone settings to detect and show me ALL wifi networks no matter how weak?


问:
USB Connections Pop-up is missing
So I had this problem around when I started to root my phones (which is recently). Usually there's 2 pop-up that would shown up whenever I connected my phone to computer, but after I rooted it the pop-up is missing (and yes I've activated the usb debugging option, restarted my phone, changed the usb cable and even downloaded a brand new usb driver on my computer). Any solutions or there's something to do with the root? (for your informations my phone is Evercoss A65B)</p>

Title: USB Connections Pop-up is missing


问:
alt+tab on physical keyboard not working anymore
on my P20Pro Android 9.0.0.159, something happened with my Logitech K380 BT keyboard ; suddenly the alt-tab combination stopped working.

I tried with another keyboard, same problem. The direct button "recent apps" stopped working too, it only does a tab now.

The other combinations and shortcuts work, just not this one.

I used the Android key test app and pressing alt-tab shows keycode 57 with KEYCODE_ALT_LEFT on.

Any idea ?
Thx


问:
redmi 5a: custom rom freezes
my rom freezes a few seconds after it booted up, the screen gets black, then it turns off and there is nothing i can do but reboot. before it freezes it says com.android.bluetooth stopped. perhaps it has something 2 do with it.

im on: crDroidAndroid-8.1-20180926-riva-v4.6.1

recovery: OrangeFox-R8.3-riva

i tried several roms, recoveries and the inferno kernel but same problem. no problem with stock rom.

i got some logs:

logcat (not the complete log): logcat

dmesg: kernel boot log

the new last_kmsg are empty but i have old ones. i can post them if u think they r important. and i have a tombstone log for bluetooth. buts its 2 big 2 post at pastebin ;D i can do it if its important.

sum1 has a hint for me?

cheers

Title: redmi 5a: custom rom freezes


问:
How can i reset my Gmail password from inbuilt Google settings of android if 2FA is enabled?
I've recently changed my gmail password and now i forgot password before this time i was able to reset it by OTP that Google sent to my number for verification but this time i enabled 2FA and Google asking some more steps to verify like when is my account was created.

I submitted all the things together with an email address to reach me but at the last it shows 'Google couldn't verify it's you'.

Please, Is there any solution and steps where i can change this in my Google App for android ?

My account don't have any recovery email, it includes only phone number for verification.


问:
How to stream to my smartphone only what I see inside the bluestacks window
I've just installed Bluestacks on my PC because I wanted to run whatsapp inside it. I have two whatsapp account. The first one on my smarthphone and the second one inside the bluestacks emulator. I want to do this because till now I used whatsapp desktop on my PC instead of using it directly on my smartphone. But the problem was that often the connection was lost and above all whatsapp for the smartphone eats a lot of battery from the phone. So I had the idea to use it directly inside the android emulator. NOW,a problem arises : when I'm at home,I kill whatsapp on my phone and I use that installed on the android emulator. BUT when I'm out of my home,I would like to see what my friends are saying in one of the two accounts. So,I have installed the "screen stream mirroring" app inside bluestacks. It says that the mirroring address is "http://10.0.2.15:5000/screen". I tried to connect a web browser from the pc and from the smartphone to that address but it refuses the connection. I have also registered a new dyndns account and I have installed a dns manager inside bluestacks because I wanted to point the address "10.0.2.15" to a domain name,but it didn't work. It says : "wrong ip address". I know that I could install a screen stream application directly on the host OS (Windows 10 in my case),but this has a big dis advantage : I should keep the bluestacks window opened and it takes a lot of space from my screen. I have also tried to run teamviewer on the bluestacks side and on the smartphone side,but I don't like this solution,because everytime I should understand where the pointer is positioned and I should move it exactly where I would like it to be. I would like also say that for me it's not useful at all using two android remote applications which works only inside the same network,because when I go out of my home usually I use the mobile connection that I have on my phone and not the wi-fi connection that's inside my house. So,the question is : how can I stream to my smartphone (samsung note 3) only what I see inside the bluestacks window ?


问:
Xbox 360 wired controller isn't recognized in Android 6.0 (BQ Aquaris M10)
This weekend I decided to add the keylayout for an Xbox 360 wired to be able to use it on Android, because now it just only blinks when I connect it.

I searched in the site about other people that could have the same problem (because the tutorial in the internet about only plugin the OTG cable in, and that's not how things go normally), but neither of then could illuminate me.

So far:

OTG cable just works fine (I used a pendrive of some years ago, so...)

The Xbox 360 wired controller is just a normal one like this (also, it is about 5V and 400mA, maybe the tablet cannot give that much power support? Personally I doubt this, as the ring-shaped connection LED can blink)

I created the required vendor files (Vendor_045e_Product_0719.kl, Vendor_045e_Product_0291.kl, Vendor_045e_Product_028e.kl and Vendor_046d_Product_c219.kl are the names I finded so far), setted its permissions (644) and restarted the tablet. The content is the same in all of them:

`

```<code># Copyright (C) 2011 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#
# XBox 360 USB Controller
#

key 304   BUTTON_A
key 305   BUTTON_B
key 307   BUTTON_X
key 308   BUTTON_Y
key 310   BUTTON_L1
key 311   BUTTON_R1
key 314   BUTTON_SELECT
key 315   BUTTON_START
key 316   BUTTON_MODE
key 317   BUTTON_THUMBL
key 318   BUTTON_THUMBR

# Left and right stick.
# The reported value for flat is 128 out of a range from -32767 to 32768, which is absurd.
# This confuses applications that rely on the flat value because the joystick actually
# settles in a flat range of +/- 4096 or so.
axis 0x00 X flat 4096
axis 0x01 Y flat 4096
axis 0x03 Z flat 4096
axis 0x04 RZ flat 4096

# Triggers.
axis 0x02 LTRIGGER
axis 0x05 RTRIGGER

# Hat.
axis 0x10 HAT_X
axis 0x11 HAT_Y
</code>```

`

So I decided to see what the log was saying. I did a logcat and then...

```<code>u0_a81@Aquaris_M10:/ # cat /sdcard/my-log-file.txt | grep Microsoft
01-20 16:03:04.340   731  1018 D UsbAlsaManager: deviceRemoved(): Microsoft Corporation Controller
01-20 16:03:07.971   731  1018 D UsbHostManager: Added device UsbDevice[mName=/dev/bus/usb/001/005,mVendorId=1118,mProductId=654,mClass=255,mSubclass=255,mProtocol=255,mManufacturerName=Microsoft Corporation,mProductName=Controller,mVersion=2.0,mSerialNumber=15E8D53,mConfigurations=[
01-20 16:03:07.971   731  1018 D UsbHostManager: UsbInterface[mId=3,mAlternateSetting=0,mName=Xbox Security Method 3, Version 1.00,  2005 Microsoft Corporation. All rights reserved.,mClass=255,mSubclass=253,mProtocol=19,mEndpoints=[]]]
01-20 16:03:07.993   731  1018 D UsbAlsaManager: deviceAdded(): Microsoft Corporationnm:Controller
01-20 16:03:33.424   731  1018 D UsbAlsaManager: deviceRemoved(): Microsoft Corporation Controller
01-20 16:03:36.930   731  1018 D UsbHostManager: Added device UsbDevice[mName=/dev/bus/usb/001/006,mVendorId=1118,mProductId=654,mClass=255,mSubclass=255,mProtocol=255,mManufacturerName=Microsoft Corporation,mProductName=Controller,mVersion=2.0,mSerialNumber=15E8D53,mConfigurations=[
01-20 16:03:36.930   731  1018 D UsbHostManager: UsbInterface[mId=3,mAlternateSetting=0,mName=Xbox Security Method 3, Version 1.00,  2005 Microsoft Corporation. All rights reserved.,mClass=255,mSubclass=253,mProtocol=19,mEndpoints=[]]]
01-20 16:03:36.951   731  1018 D UsbAlsaManager: deviceAdded(): Microsoft Corporationnm:Controller
u0_a81@Aquaris_M10:/ #
</code>```

There you can see that the vendor and product IDs are different (1118 and 654 respectively), so I tried to make another vendor file (Vendor_1118_Product_654.kl), setted its permissions, and restarted. But keeps the same. It is supossed to let you navigate over it, selecting apps and also, but nothing. I also tried playing Asphalt Nitro (looks like those are some of the games with support for controllers) with no luck.

It's my first time into Android, and so far all good tutorials just say to copy those vendor files, set their permissions, and then restart. But for me it isn't working.

My Android's version is 6.0. I don't know if you need the kernel' and compilation number, but tell me.


问:
Is there a way to pull stock rom from android using adb and a non-rooted android device?
I know that in a lot of cases adb can be powerful, but adb requires root access under certain circumstances, so my question is, if i wanted to pull my stock rom or firmware from my device, can i do it using adb and a non-rooted android device?

The reason for doing so is i know for a fact, hours of researching, that a few of my android devices do not have root availability due to locked bootloader and recovery, ext.

I want to make root available for my device any way i can, even if i have to build my own rom and flash it so it can flash other files (Samsung devices run through odin, and not fastboot)

NOTE: I am NOT looking to backup my device, i simply want the stock files so i can create custom flashable files for odin. Also, i do intend on rooting my device later, so temporary root, could help achieve what i want.


问:
Issue syncing Exchange 2003 account email after ICS update
After upgrading to ICS on my Samsung Galaxy S2, I no longed receive e-mail from one of the Exchange accounts configured in the stock e-mail app.

The Exchange 2010 account works fine. The Gmail account works fine as well. However, for the Exchange 2003 account, my phone only syncs the calendar. I receive no e-mail, although I am able to send e-mail from the same account. I have tried removing and adding the account, with no luck. I have also tried to change from Manual to Push notifications. No luck.

Could this be related to the security profile? Any way that I can force an update of this profile?

ContentLicense: CC BY-SA 3.0


问:
Unable to login to Google account after reflashing gapps (LineageOS 14.1)
today I ran into some trouble and had to reflash my LineageOS system and with that my GApps. After reflashing (dirty flash, by the way) I could not login to my Google account anymore. After logging in, I was just brought back to my previous screen and the Google account was not added. I can see my device show up on https://myaccount.google.com/. I've collected a logcat of what errors were being spit out when trying to log in. I hope anyone can help me with this! I have already tried turning off 2FA and even tried deleting the /system/etc/hosts file as this forum post recommended.

```<code>01-21 20:22:50.104  8412  8412 E Finsky  : [1] com.google.android.finsky.tos.TosAckedReceiver.a(10): Could not get DFE API, returning.
01-21 20:22:51.057 12771 12771 E ResourceType: Style contains key with bad entry: 0x01010575
01-21 20:22:52.208 12771 14287 E SetupServices: [AuditHelper] Error getting account ID
01-21 20:22:52.208 12771 14287 E SetupServices: guc: BadAuthentication
01-21 20:22:52.208 12771 14287 E SetupServices:     at gtq.a(:com.google.android.gms@14847017@14.8.47 (040306-228741232):15)
01-21 20:22:52.208 12771 14287 E SetupServices:     at gtp.a(:com.google.android.gms@14847017@14.8.47 (040306-228741232):2)
01-21 20:22:52.208 12771 14287 E SetupServices:     at gtp.c(:com.google.android.gms@14847017@14.8.47 (040306-228741232):6)
01-21 20:22:52.208 12771 14287 E SetupServices:     at gtp.b(:com.google.android.gms@14847017@14.8.47 (040306-228741232):1)
01-21 20:22:52.208 12771 14287 E SetupServices:     at gtp.b(:com.google.android.gms@14847017@14.8.47 (040306-228741232):3)
01-21 20:22:52.208 12771 14287 E SetupServices:     at gtp.f(:com.google.android.gms@14847017@14.8.47 (040306-228741232))
01-21 20:22:52.208 12771 14287 E SetupServices:     at anrn.run(:com.google.android.gms@14847017@14.8.47 (040306-228741232))
01-21 20:22:52.208 12771 14287 E SetupServices:     at qzy.run(:com.google.android.gms@14847017@14.8.47 (040306-228741232):3)
01-21 20:22:52.208 12771 14287 E SetupServices:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
01-21 20:22:52.208 12771 14287 E SetupServices:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
01-21 20:22:52.208 12771 14287 E SetupServices:     at rgd.run(:com.google.android.gms@14847017@14.8.47 (040306-228741232))
01-21 20:22:52.208 12771 14287 E SetupServices:     at java.lang.Thread.run(Thread.java:761)
01-21 20:22:52.214 12771 12771 E SetupServices: [GoogleServicesActivity] Exception writing audit records
01-21 20:22:52.214 12771 12771 E SetupServices: guc: BadAuthentication
01-21 20:22:52.214 12771 12771 E SetupServices:     at gtq.a(:com.google.android.gms@14847017@14.8.47 (040306-228741232):15)
01-21 20:22:52.214 12771 12771 E SetupServices:     at gtp.a(:com.google.android.gms@14847017@14.8.47 (040306-228741232):2)
01-21 20:22:52.214 12771 12771 E SetupServices:     at gtp.c(:com.google.android.gms@14847017@14.8.47 (040306-228741232):6)
01-21 20:22:52.214 12771 12771 E SetupServices:     at gtp.b(:com.google.android.gms@14847017@14.8.47 (040306-228741232):1)
01-21 20:22:52.214 12771 12771 E SetupServices:     at gtp.b(:com.google.android.gms@14847017@14.8.47 (040306-228741232):3)
01-21 20:22:52.214 12771 12771 E SetupServices:     at gtp.f(:com.google.android.gms@14847017@14.8.47 (040306-228741232))
01-21 20:22:52.214 12771 12771 E SetupServices:     at anrn.run(:com.google.android.gms@14847017@14.8.47 (040306-228741232))
01-21 20:22:52.214 12771 12771 E SetupServices:     at qzy.run(:com.google.android.gms@14847017@14.8.47 (040306-228741232):3)
01-21 20:22:52.214 12771 12771 E SetupServices:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
01-21 20:22:52.214 12771 12771 E SetupServices:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
01-21 20:22:52.214 12771 12771 E SetupServices:     at rgd.run(:com.google.android.gms@14847017@14.8.47 (040306-228741232))
01-21 20:22:52.214 12771 12771 E SetupServices:     at java.lang.Thread.run(Thread.java:761)
</code>```


问:
How to get rid of Google invasion?
The performance of my phone became very poor. It's very slow. When I open the wifi, it freezes for a few minutes! I had to reset factory default.

After the resetting, the phone became super fast once again but I found some pre-installed apps that may make my phone slow again such as Facebook, Messenger, Whatsapp, ...etc. I deleted all of them but I can't get rid of Google products. I can only disable them. I don't know why Google imposes their products. I have the right to manage my internal memory the way I like!

Here is a list of the products that consume the internal memory as well as the performance:

Chrome

Google Play Store

Google Drive

Gmail

Google App

Google play music

Google Play services

Google Hangouts

Google Maps

Google Photos

Would you tell me how to get rid of them, please? I have Android Marshmallow 6.0

Title: How to get rid of Google invasion?


问:
How can I increase my samsung galaxy s4 signal power
I'm having poor signal quality from service provider(the signal for recieving calls, messages etc.)

When I check from "about device" section, it usually says around -110 dbm and 2 asu.

I have no problems connecting internet via wifi( my home's modem, not mobile data)

I have given the phone to a technician for repair but it's still not fixed.

I opened the case and checked antenna(which I'm guessing, was replaced by the technician, so it's most probably pretty new), which looked like okay.

I usually recive only 1-2 bars and rarely 4 bars of signal quality.

What might be the reason(s)?


问:
Android 8 / LG 6: Add next alarm to lock screen?
On my previous Nexus 5 (which was running Android 6), the lock screen displayed this: 19:05 ⏰ 7:30 (indicating that it's now 19:05 and the next alarm would be at 7:30).

Now that I'm on Android 8 (on a LG G6), I cannot find any way to display the next alarm on my lockscreen. I've seen some videos about Facewidgets, but that only appears to be for Samsung phones. Even the "Always-on-display" doesn't include the next alarm.

Is there a way for me to do that? I've tried even looking at the Android API to see if I could build my own app to customize the displayed clock (there are functions allowing me to get the next alarm clock). I just can't find a way to manipulate what is displayed on the lock screen.

Any ideas is welcome!


问:
Is there a way to setup a "Work Profile" for an arbitrary Exchange account?
I've worked at companies in the past where it was possible on Android to setup a "work profile" which remained totally separate from the personal profile. This meant separate apps for things like Gmail, Calendar, Docs, etc. that were totally isolated from each other.

The benefit of this is that the company can delete the entire work profile if they need to without touching any of the personal apps and data on the device.

If I go to setup a new Exchange account for a Microsoft domain, it asks me to give it full and total control of my device and the ability to delete everything at the discretion of the IT administration of the organization.

Is there a "work profile" mode for setting up a Gmail Exchange account or a way to do this with the Microsoft apps?

I'm on Android 9 on an original Pixel 1.


问:
TWRP unable to mount anything except external-sd (invalid argument)
I'm trying to install Magisk on my Leagoo T8s but there's errors even before Magisk installation:

```<code>E:Primary block device '/dev/block/platform/bootdevice/by-name/userdata' for mount point '/data' is not present!
Failed to mount '/data' (invalid argument)
Failed to mount '/cache' (invalid argument)
Failed to mount '/system' (invalid argument)
</code>```

What can I do ?


问:
Android GUI: Y Axis Inversion
Somehow the Y-axis of my Android display became inverted. I'm looking for a way to return it to normal. At this stage I don't care if it's a real solution to the original problem or a workaround.

Only the visual display is inverted, not the touch sensor; the two are out of phase with each other. In other words, the home button that usually lives at the bottom of the screen, appears up the top, but the trigger is still down the bottom. It's.. frustrating.

Yes, I've tried a factory reset.
No, rotation isn't a solution. I made this to demonstrate the difference:

I read somewhere that I need to change ro.sf.hwrotation=180 to ro.sf.hwrotation=0 in /system/build.prop, but that line isn't present on my device; an old LG Nexus 5 (Hammerhead). I'm hoping SurfaceFlinger might have some kind of config file somewhere that I can edit or something like that. Any ideas?

Title: Android GUI: Y Axis Inversion


问:
Nexus 5X: bootloop after restoring NANDroid backup via TWRP
I was using LG Nexus 5X with Lineage OS 14.1 for a long time. I wanted to switch to stock Oreo ROM to see how it is.

I made a backup of the following items (Lineage OS 14.1) using TWRP:

Boot

System Image

Data

System

Vendor

Vendor Image

and copied them to my PC. After that I downloaded:

8.1.0 (OPM7.181205.001, Dec 2018)

which is a factory image from Google website and executed "flash-all.bat" to install the stock ROM on the phone. The stock ROM worked good. Afterwards I wanted to restore Lineage OS from my backup. So I installed TWRP "twrp-3.2.3-0-bullhead.img", wiped the phone and restored all the items listed above.

After everything was completed, I rebooted the phone and there was a boot loop at Lineage OS logo. I downloaded an older factory image:

7.1.2 (N2G48C, Aug 2017)

and installed it with "flash-all.bat". It worked, the phone booted. Then again I installed TWRP "twrp-3.2.3-0-bullhead.img", wiped everything and restored all the items from Lineage OS. After it was done the device wouldn't boot. Boot loop at Lineage OS logo again. I tried with older TWRP "twrp-3.2.2-0-bullhead.img" but nothing has changed.

Is there any way I can restore the old Lineage OS 14.1 from the backup I made? I'm not an expert, I follow guides on the web, if you have any comments or questions please state them clearly. If you have an idea how to fix the boot loop, please write your thoughts with steps which I could follow.

Many thanks.


问:
Is there a way to check who is connected to my Galaxy Nexus hotspot
I would like to be able to check who is using my phones hotspot, it was simple on my Droid 2 since the Motorola app much like the one shown in the answer to How do I check who is connecting to my hotspot? however I don't see a version of this screen with the galaxy nexus.

Update:
Looking for a non-root solution


问:
Leagoo T10 (Android 6.0). Unable to connect to USB device
I have a Leagoo T10 phone running Android 6.0.  I am unable to connect to a USB thumb drive using a USB type C OTG adapter.  I am also unable to connect to my Canon SLR camera using the DSLR Connect app (the camera and app works using another phone using a later version of Android).

There is no option on this phone under Settings -> Storage to connect to a USB device that I can see.

I've tried turning on USB debugging, and changing the USB configuration to MTP.  No joy.

The OTG device is working - I'm able to connect the phone to my DJI Osmo Pocket with it.  The USB thumb drive is also working.

When I open op OTG Disk Explorer, I get the message "Cannot mount the USB Drive.  No device found".

The specs of this phone state that OTG is supported.

I've tried everything that I know to get this working.  Does anyone have any suggestions?


问:
Install Google Phone dialer on other phones
As you know Google Pixels and Nexuses are using Phone application as default dialer. and other phones can't install it.

even if we get different versions of it from ApkMirror, it does not install on phone!

I tested it on Huawei Nova


问:
Why is my Galaxy S notifying me about a new message when my inbox is empty?
My Galaxy S keeps telling me I have a text message. I have erased my entire inbox but the notification won't go away. How do I make this notification stop?</p>


问:
How to install an unsafe APK after allowing Play Protect to block it?
I was just wondering, when installing an APK from an unknown source and you click OK to allow Play Protect to block it, is there a way of installing that app without fully disabling Play Protect?

When trying to install the same app after allowing the block, it shows App not installed.


问:
I see incorrect photo when accessing Android via USB
I see incorrect photo when accessing Android via USB. It's different from the one, I see in telephone itself. If I copy this photo to desktop, I get wrong image. If I move photo to desktop, I loose data.

This completely compromises USB access to Android.

Is it possible to avoid such situations by 100%?


问:
How to block Criteo popups ads?
I have a samsung s6 with android 7.0 and recently I have get some popup ads showing up in full screen mode when entering an app on my phone.
I tried to delete recently installed apps but the problem didn't go away.
I also tried adguard, malwarbytes and avast , adblock but none of them solved the problem.
When I enter the app info it says it is from Criteo.

I tried to block the ads from chrome browser and from google settings there is no way to disable those ads.

Can someone please help as I was not having this issue in the past.
I am open for any suggestion
Thanks

Title: How to block Criteo popups ads?


问:
Install Bash on rooted Kindle Fire
I just rooted my Kindle Fire and installed QuickSSHd, an SSH daemon app.

I can log in via SSH (using Putty in Windows 7) and become root, etc. It appears, however, that the only shell installed is sh which lacks many of the niceties of other shells like Bash.

So, is it possible to install Bash (or a Bash-like shell with more features than sh) on a Kindle Fire?

Title: Install Bash on rooted Kindle Fire


问:
Cant remove Google Chrome notifications
I got notifications saying "waiting for network" when I tried to download a video file.

How do I get rid of those notifications without restarting the device?

They seem to be unclearable. Why?

Is there a notification removal app that I can use?

Title: Cant remove Google Chrome notifications


问:
Can't boot into recovery or TWRP
Long story short, I was trying to get TWRP on my Moto G6 but am unable to boot in any way.

```<code>fastboot boot twrp.img
</code>```

Results in the phone hanging with the Motorola logo. I'm guessing that this is relating to me flashing the recovery before-hand instead of booting it first. I'm not sure, I'm new to this.

When I try to boot into recovery from fastboot it presents me with the fastboot screen once more saying "Start Up Failed" with an error "Failed to pass validaton [sic], backup to fastboot".

For the record, the normal mode boots up fine, but I don't really care for the phone if I can't get TWRP running on it.

Title: Can't boot into recovery or TWRP


问:
Bluetooth tethering from Samsung Galaxy 8 used to worked great
I have a Samsung Galaxy 8. I use it a lot to tether my Samsung tablet which hasn't pushed an update in a long time. I found that bluetooth tethering saved my phone battery far better than wifi hotspotting. My data speeds were fine for me with blutooth.

The latest update that Samsung or Cspire pushed to my phone ruined that! Now the tablet will not stay connected to the phone by bluetooth for longer than a minute, only wifi. However bluetooth still works fine with my vehicle connection. I still feel it's a phone issue since it happened right after the update. What can I do? I'm technology challenged! Thanks for suggestions!


问:
How can I identify which app in a certain category is installed on an Android device, to install it on another?
I bought my old Android phone on a trip to China so some apps came from Chinese app stores and some came from Google's after I came back.

For apps that fit in a certain category, such as currency converters, how can I identify with certainty which exact such app is on a phone. By looking around the app and in the phone's preferences and settings, I can only find the name, which is pretty generic, and a version number.

Is there some kind of more unique identifier, some kind of ID, or some kind of link that's somewhere on all Android phones that will truly identify each app?


问:
USB MTP/PTP/Tethering/Midi Not Working
I have a Samsung Galaxy Tab 4 T235Y LTE 7.0". I have ported and flashed rom and it went wrong. Then I flashed stock rom. Now it's not detecting usb on pc (not showing usb options in tablet like mtp/ptp selection) and only charging device. Also when I turned off the device and put into charge offline charging animation isn't showing. Twrp recovery usb also not working. Usb works only when in odin download mode. Please help me to fix this !!</p>

Title: USB MTP/PTP/Tethering/Midi Not Working


问:
Get suggestions on misspelled words in spell check (when have the squiggly red line)
I get a red squiggly line under my misspelled words but when I touch on the line I get a menu with only the 2 choices of adding to the dictionary and to delete.

How can I get it to give me some options of correct spelling? I remember once before having this problem and I found a solution online. but now for the life of me I can't remember the solution and I cant seem to find it again online.


问:
Cannot transfer files to cell after enabling USB debugging
I enabled USB debugging now I can't transfer any file to my cell after this.
I tried disabling it but once I disable and close settings it enables itself again automatically.

I connected my cell with USB port to my PC and it shows the message that it's connect and even the icon but if I open the icon to transfer file by copying or cutting , I don't see any desirable file in my cell in which I have to place the file.
What to do now?

Help me on disabling USB debugging please.
Also help me on transferring files during USB debugging enabled and disabled both.

Cell: Moto E4


问:
Could malware be persisting on a tablet after factory reset?
Is there any other solution for my Sprint Slate besides factory reset?  When using certain aps the screen goes black even though sound can still be heard, it stutters and lags and freezes.  I used to be able to restart it and that would work but now even that doesn't seem to work.  Also when I tap icons the one that opens is often not the one I chose.  It worked for a while after the factory reset but now it is back to the way it was before.</p>


问:
Forced download
I had this icon in notification bar once I connected to wifi .. Google play auto update is disabled and application update comes with no red dot ... When I scrolled down the status bar, no notification about what is being downloaded ... In google play, no recent updated apps ... Any idea what was it or how to know what was being downloaded?
Kind regards,
Ahmed

Title: Forced download


问:
How do I know Google Play store apps are authentic and untampered with?
I use Linux a lot and Android on my phone only for a few things. However I want to install a new app (Signal) for the first time in ages.

Now... when I download and install linux apps I can check and verify authenticity of ISOs and other files with a hashing method (gpg, etc etc) and check the stuff I am installing is verified and kosher etc etc.

But... how do I know that the Signal app I download from Google play is authentic and un-adulterated with the same certainty?

Thanks


问:
Android Apps will not stop updating, no matter what I try
I've searched extensively on this and I see many threads where the advice relates to drilling into the apps individual menu list and 'un-checking' the 'Enable auto-update' box.

Anyway, I'm at my wits end here now.  For whatever reason, I do not want ANY apps to update by themselves.  This functionality has been well supported in Android for a long time now and has worked.  However, it no longer does and it's extremely frustrating - I'm turning to the collective brain here to see if anyone is able to help me at all?

Here are the details:

Galaxy Note9 (SM-N960F UK)
Vodafone contract (UK)
Android 8.1.0
Sams Exper Version 9.5

Google playstore : Auto updates is turned OFF

Samsung Galaxy Apps: Auto update apps, is turned OFF

Every SINGLE app in the Play store list has been checked that the 'Enable auto-update' is NOT checked. (this is the one that everyone seems to immediately advise upon, however I have covered this off already)

And yet, at least 40-odd apps have recently auto-updated and continue to do so!

It's driving me nuts.

Is anyone else having the same experience and - is anyone able to assist at all please?  Many thanks in advance.


问:
What's a good place for public SSH keys on my filesystem?
I'm using an SFTP server app on my Android phone (RedMi 3S); it's a typical Android app, not something requiring root or run as an ARM binary from the command-line). This server app lets me define some username+password combinations for connecting. So far - so good.

Now, I want to use some public keys to allow password-less connection from certain people/hosts. But - where should I put them? What's the equivalent of the faux-user's $HOME/.ssh directory?

I realize I can just put them anywhere and it'll work, I'm asking what's the customary location for this kind of data.


问:
What are the "dctp" and "did" files in my Android storage?
I have noticed two strange files in my Android storage. They are named "dctp" and "did". They don't have any extensions and my programs cannot read them. What are those files and what are their purposes?</p>


问:
Which component of the Android protocol stack performs cellular encryption?
I understand that the SIM Card plays a significant role in generating keys for the encryption and decryption of cellular traffic, but are these keys passed to the Android architecture so that it can use them?
Or does the actual encryption take place on the SIM Card? </p>


问:
How can Users from a company download private apps
In order to keep our react-native app updateable and private, we decided to use this approach to upload an APK to the Play Store privately. Apparently, our client has to have G Suite set up for this to work. I suppose, with G Suite, the client can "add" user accounts to the company and with that, somehow allow them to download our app (by whitelisting it?).

But how/where can the Users download and install the private app after it has been published? Can they just search for it on the play store and see/download it there?


问:
Keeping whatsapp installed on second device
If I transfer everything over wireless to my new android device (included whatsapp) from the old one, when I open Whatsapp it does not ask a verification code for the new device (where I have my sim). And in the old device, with just wifi, the old whatsapp still works.
How can that be possible?</p>


问:
how to change hotspot auto-off time using ADB command o Root?
Hi guys I'm looking for a solution on how to change the auto-off time of the hotspot with ADB command o Root, defatul is set to 5 minutes: "the hotspot will be turned off if no device will connect within 5 minutes" ... it's really stressful. .. does anyone know the command o root solutions? many thanks in advance...

PS: phone I have to use it only as a hotspot, I dont care about the battery or anything else, now its use is only as a hotspot...

specifications:
Model: Meizu M2 mini
O.S: Android 5.1 Lollipop
Root: at the moment I removed the root because I restored it to use it only as a hotspot, but I can ReRoot in 5 minutes without problems.
WiFi: good WiFi power, dual band 2.4 & 5Ghz.


问:
How to press & long press the "back" key with a terminal command?
We manage Zebra Mobile computing units running on Android 6.0 Marshmallow through an MDM. For some reason, the MDM interface doesn't show the Android buttons at the bottom of the screen (back, home, menu, etc).

I was able to find the script for the home screen on this site.

Is there a way to send the script for other buttons as well?


问:
OTA stock firmware zip
I have a bricked TV Box MeCool HM8 and I need to restore it to factory settings
,unfortunately I have the stock firmwave in zip format and need to convert it in image format to be able to use an sd card for recovery.. Any help, advice , would be appreciated..thank you.
regards.
Guitsy</p>

Title: OTA stock firmware zip


问:
adb error type 3 Activity class {com.android.launcher3/com.android.launcher3.WallpaperCropActivity} does not exist
I tried to change my wallpaper via adb. As I'm new to Android and don't know much about its activities, launcher etc. I don't know where my mistake is. I have found following adb command:

```<code>adb shell am start -d file:///sdcard/Download/test1.jpg -a android.service.wallpaper.CROP_AND_SET_WALLPAPER -f 0x1 com.android.launcher3/.WallpaperCropActivity
</code>```

I'm getting the following error:

```<code>Error type 3
Error: Activity class {com.android.launcher3/com.android.launcher3.WallpaperCropActivity} does not exist.
</code>```

I tried another command which shows a message on the device screen:

```<code>Picture couldn't load as wallpaper
</code>```

adb command which shows the message:

```<code>adb shell am start -a android.service.wallpaper.CROP_AND_SET_WALLPAPER -c android.intent.category.DEFAULT -d file:///sdcard/Download/$bild -t 'image/' -e mimeType 'image/'
</code>```

The devices OS is Android 8.1.
Does anyone know how to change the wallpaper (Home- and Lockscreen) of an Android device with adb?


问:
How should I enter organizational units into my contacts?
The (Android) contacts system is modeled to contain individual people's contact info: There's a name, a last name, an organization/company the person is in, address etc.

However, we also need to keep the contact information for organizations, or departments/units within organization. For example: The customer support line of a branch of company.

What's the right way to have this information in your contacts?

One thing you can do is  just divide the information somehow between a pseudo-name and the overall company info. This is already crooked, semantically, since you'll have a name that's not a name; but its even more untenable, because the company name is critical, while not being displayed or being shown in small print when a call is incoming or when browsing the contacts.

What I actually do is shove everything into the name somehow, and use the most recognizable company name to start my "name".

Are there other options I'm missing?


问:
How to deal with the "com.qualcomm.qtil.aptxui has stopped" error message?
I have Asus Zenfone Max Pro M1 android phone. Whenever I connect my bluetooth headphones and start playing music, I receive an error message saying "com.qualcomm.qtil.aptxui has stopped". The only option is to dismiss the error message and everything works fine then. What does the error message mean? How can I avoid it?</p>


问:
Enable Developer options in Kindle Fire Second Generation
I have a kindle fire second generation with 10.5.1 OS installed. I'm trying to enable developer options but tapping the serial number seven times does nothing. What should I do?</p>


问:
WhatsApp notifications make phone unusable!
When I get am SMS text message I get a small notification at the top of the screen. However when I get a WhatsApp message the notification takes over the entire screen. If I get a flurry of messages my phone is basically unusable for a while, which is annoying if I'm trying to do something else. </p>

<p>I don't want to turn off WhatsApp notifications completely I just want them to be less prominent. Is this possible? I have a Pixel 3 so I'm running stock Android. </p>


问:
Why doesn't my downloaded file appear in the Download folder?
I've downloaded a Powerpoint presentation of the Facebook mobile app and when I go to the downloads folder and search up the name of the file, it doesn't appear. It just says "No results found. I use a Samsung A6.


问:
Where can I find the default /system/lib for Lollipop
I have a rooted Alcatel 5017 A and I wanna check the libraries on the system (I think I got hacked) can anyone show me the default content of system/lib for this phone? Thank you all!

Also, I would like to decompile some system process in order to check if their code had been changed, if anyone knows how to reverse engineer the com.google... processes I would love that


问:
Recover non-sent Voice Note on WhatsApp
I need to recover a non-sent audio on WhatsApp. I was keeping my phone hidden so the person threatening me wouldn't know I was recording and when I took my phone off my pocket, I accidentally clicked on "cancel". Is there anyway to recover it from WhatsApp database or Android?</p>

Title: Recover non-sent Voice Note on WhatsApp


问:
How to create custom shortcut on homescreen with extras parameters?
I would like you create custom separate shortcuts to MPV player for each of my IP cameras around the house.

I can launch MPV to directly play the camera stream using adb

```<code>adb shell am start -n is.xyz.mpv/is.xyz.mpv.MPVActivity -e filepath "rtsp://login:password@192.168.2.1:554//Streaming/Channels/1"`
</code>```

I tried editing sqlite db /data/data/org.lineageos.trebuchet/databases/launcher.db and adding new entry for each shortcut but it didn't work. I'm not 100% sure how to pass extras variable in format like

```<code>Intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;launchFlags=0x10200000;component=is.xyz.mpv/.MPVActivity;s.filepath=rtsp://login:password@192.168.2.1:554//Streaming/Channels/1;end
</code>```


问:
Android's certain button cannot pressed
Im facing issue cant press certain button (i.e. VPN ok button, chrome agree t&c), as seen in the video

Screen Record (GDrive)

Currently i am using

Ressurection Remix 7.0 (Android Pie/9)
OnePlus X E1003

GApps is stock, but removed certain apps such as pixel/google rom as it may conflict with previous try of installation.

PS: i wil post on rom's xda forum later

Title: Android's certain button cannot pressed


问:
Whatsapp very slow, ads show up randomly every 10 minutes
Since 2 days ago my whatsapp is very slow.
Every message needs 30 minutes.Maybe 1 hour.

Internet is fine. I can surf the web and stuff. However, look at this screenshot. Nothing gets sent. If I restart Whatsapp, things works again.
Let me show you a screenshot.

Also there are ads that often show up randomly. Here is another annoying ads

The screenshot I took have a file name called Screenshot_2019-02-07-15-30-44-985_com.game.flowoneline.png.
The thing is those annoying ads still show up even when flowonline game is gone.


问:
Unlink system and ringer volumes
Does anyone know of a way to unlink the system and ringer volumes on Android oreo or pie? My goal is to have a loud ringtone while keeping the system sounds minimal or off altogether. If someone has a different solution for the desired goal that would also be appreciated. </p>

Title: Unlink system and ringer volumes


问:
Android Terminal: Vibration command?
Which command in the Android Terminal can be used to vibrate? (for a custom length such as 50 milliseconds)

I would like to integrate vibration feedback into a shell script.

Maybe I need permission first. How do I manually grant the Android Terminal permission?

Title: Android Terminal: Vibration command?