I am working on automating screenshots capture for one of my apps.
Since I want to capture screenshots of some activities and widgets that differ according to the system locale, I start for each desired language a new Android virtual device (emulator) with the correct properties for setting the system locale. Then, specific user interactions are simulated with uiautomator.
My workflow is working as expected but I have an issue with screenshots capture. Indeed, using UiDevice.takeScreenshot(File storePath) or screencap on the emulator always creates an empty file.
It seems to be a known issue with AVD running with Host GPU enabled (which is my case). The proposed workaround is to start the emulator with Host GPU disabled. Unfortunately, when I start the virtual device with Host GPU disabled, the emulated screen remains black.
I have taken a look at the output of the emulator with the -verbose option and abd -e logcat command (emulator output, logcat output). In logcat ouput I have identified the following error but I cannot figure out the cause of it:
E/SurfaceFlinger( 929): hwcomposer module not found
E/SurfaceFlinger( 929): ERROR: failed to open framebuffer (No such file or directory), aborting
Below is the command I use to start the emulator:
LD_LIBRARY_PATH=$ANDROID_HOME/tools/lib:$LD_LIBRARY_PATH emulator -avd screenshots -skin nexus_6 \
-skindir $ANDROID_STUDIO_HOME/plugins/android/lib/device-art-resources -no-audio \
-prop persist.sys.language=en -prop persist.sys.country=en -verbose -qemu -m 512 -enable-kvm &
I am running Fedora 21 with an Nvidia GPU.
Does someone has succeeded to start an Android virtual device with a recent system image with Host GPU disabled? Any help or suggestion is welcomed.
