can not click action bar app icon Android

Question

I'm trying to make the action bar app icon (top left image) clickable but it just doesn't work, I've already searched for some answers but nothing works. I've already tried to getSupportActionBar().setHomeButtonEnabled(true); and I can see the icon, but i still can't click on it. I know I can handle the event in the method onOptionsItemSelected(MenuItem item) but the event will never get triggered with my situation. I also don't get why I have to use getSupportActionBar(); instead of getActionBar() ...the second one is always null. The minimum sdk is 16 and the maximum is 22. I read this answer -> ActionBarCompat - App icon action (click) not working on 4.0 devices but I don't know how to get in the ActionBarHelperICS.java class or if it apply to my case.

Answer 1

You haven't really posted any code. But there may be 2 problems. You have to specify which is the parent activity in your manifest file.

Under the activity's tag in manifest, you'll have to specify which activity your home button will point to. Something like this:

android:parentActivityName="com.example.app.MainActivity"

Or Override your onOptionsItemSelected

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home:
//add what you want to do here...
        return true;
    default:
        return super.onOptionsItemSelected(item);
    }
}