Android :java.lang.SecurityException: Injecting to another application requires INJECT_EVENTS permission

Question

Hi there I am new to Android Junit testing:

I have written some test code in MainActivityFunctionalTest.java file

MainActivityFunctionalTest.java:

Answer 1

Some more ways to fix "Injecting to another application requires INJECT_EVENTS permission" happening with TouchUtils...

Eg. the official android developer site shows:

// Stop the activity - The onDestroy() method should save the state of the Spinner
mActivity.finish();

// Re-start the Activity - the onResume() method should restore the state of the Spinner
mActivity = getActivity();

Yet, this can cause the error if in the test method this is followed directly by a TouchUtils.clickView:

// Stop the activity - The onDestroy() method should save the state of the Spinner
mActivity.finish();

// Re-start the Activity - the onResume() method should restore the state of the Spinner
mActivity = getActivity();

// Possible inject error!
TouchUtils.clickView(this, someView);

However, splitting it into two test methods and allowing setUp() to run in-between appears to fix* the problem (Note this is controlled here by the method name as tests are run alphabetically):

*this still might fail after an intent was called but no longer does after finish was called

public void testYTestFinishing() {

    TouchUtils.clickView(this, someView);

    // Finish & restart the activity
    activity.finish();
}

// -------------------------------------------
// Called before every test case method
@Override
protected void setUp() throws Exception {
    super.setUp();

    setActivityInitialTouchMode(true);

    activity = getActivity();

    getViews();
}
// -------------------------------------------

public void testZOnReturn() {

    TouchUtils.clickView(this, someView);

}

Interestingly, putting what's in setUp() before the TouchUtils can both fail and work:

public void testYTestFinishing() {

    TouchUtils.clickView(this, someView);

    // Finish & restart the activity
    activity.finish();

    setActivityInitialTouchMode(true);

    activity = getActivity();

    getViews();

    // SORRY, this fails here on some builds and succeeds on others
    TouchUtils.clickView(this, someView);
}

You can also try the waitForActivity timeout directly before the TouchUtils which can* fix it at other times such as after an intent was called:

*Inject error can still occur if used within the same test method... will need to split out into another method as I show above.

    Instrumentation.ActivityMonitor monitor = getInstrumentation()
        .addMonitor(Instrumentation.ActivityMonitor.class.getName(),
        null, false);

    // Wait for activity to fix inject error; Increase or decrease as needed
    monitor.waitForActivityWithTimeout(2000);

    // Should no longer fail
    TouchUtils.clickView(this, someView);