How to use

executeShellCommand

method

in

android.app.UiAutomation

  @Before
  public void setUp() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
      getInstrumentation().getUiAutomation().executeShellCommand(
          "pm grant " + mActivityRule.getActivity().getPackageName()
              + " android.permission.READ_CONTACTS");
    }

    mActivityRule.getActivity();

    // Initialize to default preferences
    KissApplication.getApplication(mActivityRule.getActivity()).getDataHandler().clearHistory();
    PreferenceManager.getDefaultSharedPreferences(mActivityRule.getActivity()).edit().clear().apply();
    PreferenceManager.setDefaultValues(mActivityRule.getActivity(), R.xml.preferences, true);

    // Remove lock screen
    Runnable wakeUpDevice = new Runnable() {
      public void run() {
        mActivityRule.getActivity().getWindow().addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON |
            WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
            WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
      }
    };
    mActivityRule.getActivity().runOnUiThread(wakeUpDevice);
  }
}

 private static void grantReal(UiAutomation automation, String permission) {
  try {
   String targetPackageName = InstrumentationRegistry.getTargetContext().getPackageName();
   ParcelFileDescriptor pfn = automation.executeShellCommand("pm grant " + targetPackageName + " " + permission);
   pfn.close();
  } catch (IOException e) {
   Log.w(TAG, e);
  }
 }
}

private void grantPermission(Context context, String permission) {
 if (Build.VERSION.SDK_INT < 23) {
  return;
 }
 UiAutomation automation = Registry.getRegistry().instrumentation.getUiAutomation();
 String command =
   String.format(Locale.ENGLISH, "pm grant %s %s", context.getPackageName(), permission);
 ParcelFileDescriptor pfd = automation.executeShellCommand(command);
 InputStream stream = new FileInputStream(pfd.getFileDescriptor());
 try {
  byte[] buffer = new byte[1024];
  while (stream.read(buffer) != -1) {
   // Consume stdout to ensure the command completes
  }
 } catch (IOException ignored) {
 } finally {
  try {
   stream.close();
  } catch (IOException ignored) {
  }
 }
}

/**
 * Safe way to remove granted permission to you app without app restart.
 */
public static void resetAllPermission() {
  // permissions handling only available since android marshmallow
  if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
    return;
  }
  InstrumentationRegistry.getInstrumentation().getUiAutomation().executeShellCommand("pm reset-permissions");
  EspWait.forDelay(DELAY_FOR_COMMAND_EXECUTION);
}

private static void grantWritePermissionsForScreenshots() {
  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
    try {
      Instrumentation instrumentation = InstrumentationRegistry.getInstrumentation();
      String appPackage = getTargetContext().getPackageName();
      instrumentation.getUiAutomation().executeShellCommand("pm grant " + appPackage
        + " android.permission.READ_EXTERNAL_STORAGE");
      instrumentation.getUiAutomation().executeShellCommand("pm grant " + appPackage
        + " android.permission.WRITE_EXTERNAL_STORAGE");
    } catch (Exception e) {
      throw new RuntimeException(
        "Exception while granting external storage access to application apk", e);
    }
  }
}