I am using adb to record the device's video. I pull the video and it plays back a black screen. Is there something else I need to enable?
adb shell screenrecord --time-limit 10 /sdcard/video.mp4
adb pull ./sdcard/video.mp4
Related
I can't debug the application to the emulator because adb is unstable as shown in the log below, I tried to do the adb device command three times but the results are different, how do I fix it?
$ adb devices
List of devices attached
emulator-5554 device
$ adb devices
adb server version (40) doesn't match this client (41); killing...
daemon started successfully
List of devices attached
emulator-5554 offline
$ adb devices
List of devices attached
emulator-5554 device
I have a non rooted Samsung device , i want to enable/disable wi-fi settings for my usages via adb.To open wifi for non rooted device via adb i ran below command
adb -s 4d0075754fdb41cd shell am start -n com.android.settings/.wifi.WifiSettings
By default the wifi is coming as diabled , i want to enable/disable it
I tried with Keyevent , however this did not helped much
adb shell input keyevent 22
The wi-fi slider looks like below , i tried with all available key_code .
Can anyone point me a way to get the correct keycode here!!
You can try adb -s $PHONESERIAL shell "svc wifi enable" if you just want to turn on the wifi with adb.
Was already answered here : android adb turn on wifi via adb
You placed appium tag, so if you using appium, try running:
adb -s $device_id shell am broadcast -a io.appium.settings.wifi --es setstatus enable
adb -s $device_id shell am broadcast -a io.appium.settings.wifi --es setstatus disable
How do you take a screenshot via ADB for Android Things? I have tried:
adb shell screencap -p /sdcard/screen.png
adb pull /sdcard/screen.png
adb shell rm /sdcard/screen.png
and
adb shell screencap -p | perl -pe 's/\x0D\x0A/\x0A/g' > screen.png
I couldn't make screepcap work in Android Things Developer Preview. The command results in a 0-size file.
That said, I recommend the following two options: either use the framebuffer or record a video (screenrecord seems to work) and convert it to an image later on by proper tool. I'll consider the first option, so the steps would be:
Pull the framebuffer to the host machine. Note that you need to start adbd as root in order to pass a permission check:
adb root
adb pull /dev/graphics/fb0 screenshot
Convert the raw binary to image by the tool you prefer. I'm using ffmpeg. The command below might not work for you due to different screen resolution or pixel format. If so, make proper changes.
ffmpeg -f rawvideo -pix_fmt rgb565 -s 800x480 -i screenshot screenshot.png
Seems, because of old limited OpenGL version in Android Things, described by Tatsuhiko Arai here there is no possibility to get screenshot via ADB, but You can record video (e.g. from Android Studio, or via ADB commands) and than grab frame from it, for example via ffmpeg:
ffmpeg -i device-2017-01-23-193539.mp4 -r 1 screen-%04d.png
where device-2017-01-23-193539.mp4 - name of recorded (via Android Studio) file .
I've tried exactly this code with a little bit change like below (but no matter) and it works well. The image is in my platform-tools directory now.
adb shell screencap -p /sdcard/screen.png
adb pull /sdcard/screen.png screen.png
adb shell rm /sdcard/screen.png
I am having difficulties in my android application because i want to run my project in my android device. I tried to install some drivers for my phone but still, it can't update the drivers and my phone is not recognized even in adb devices. Please help. Thanks.
Run android update adb
Run adb kill-server
Run adb start-server
At this point, calling adb devices started returning devices again.
Now run or debug your project to test it on your device.
If you use Windows
If you don't have the android and adb set as windows environment variables, just go to
C:\Program Files\Android\sdk\platform-tools
(in explorer press Shift+RightClick in the white part and open command window) and use the following commands: ..\tools\android.bat update adb adb kill-server adb start-server
For android phones,
Turn on Developer mode on settings
For Oculus devices,
Open Oculus App in your android/ios device
Make sure the oculus device is connected via bluetooth
Goto Settings, Click on oculus device name
From Dropdown menu, click More Settings -> Developer Mode and turn it on
I was able to find ADB required version 1.0.40 from here and it works like a charm:
D:\Setups\XXXXX\Lineage FP3\platform-tools_28.0.1(ADB_1.0.40)>adb devices
List of devices attached
A2XXXXXXXXX1 unauthorized
I am playing a video through adb on my device. but it plays in portrait mode by default.
Is there any adb command to toggle the video in landscape mode automatically.