how to override action bar back button in android?

Question

I want to customize the activity back button in action bar, not in hard key back button. I have overriden the onBackPressed() method. It works with my emulator

Answer 1

Sorry mine is a late answer, but for anyone else arriving at this page with the same question, I had tried the above:

@Override
public boolean onOptionsItemSelected(MenuItem item) {
  ...
  if (item.getItemId() == android.R.id.home) {
    ....
  }
  ....
}

but this failed to catch the "Back" button press.

Eventually I found a method that worked for me on https://stackoverflow.com/a/37185334/3697478 which is to override the "onSupportNavigateUp()" as I am using the actionbar from the "AppCompatActivity" support library. (There is an equivalent "onNavigateUp()" for the newer actionbar/toolbar library.)

@Override
public boolean onSupportNavigateUp(){  
  finish();  
  return true;  
}

and I removed the "android:parentActivityName=".MainActivity" section from the manifest file.