EASIEST WAY TO GIVE SET_ANIMATION_SCALE PERMISSION FOR YOUR UI TESTS ON ANDROID

Hello dear reader!

As you know, Espresso requires animations to be disabled. Through years I've tried different solutions to do that:

  • Pre setup Device/Emulator image so animations are disabled already. HARD TO DO AND MAINTAIN.
  • Use UiAutomator to go to Device/Emulator developer options and disable animations there (wth…). VERY UGLY and system-dependent.
  • Run pm grant package.com android.permission.SET_ANIMATION_SCALE after installation of the app but before test run and then disable/enable animations in the test code. YOU HAVE TO DEAL WITH BUILD SYSTEM AND ADB.

Today I've figured out much easier way to do that:

  1. Use UiAutomator to grant permission right in the tests (in Test Runner for example)
  2. Disable/enable animations from tests.
UiDevice  
  .getInstance(instrumentation)
  .executeShellCommand(
    "pm grant " 
    + instrumentation.getTargetContext().getPackageName()           
    + " android.permission.SET_ANIMATION_SCALE"
  )

And something like this to control animations:

(You will need only animation enable/disable code, no Gradle/etc scripts are required.)

UiAutomator client library is part of support-libs.

😿 Took so long to realize that it was that easy 😿

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