android Up button press in title bar not getting detected

Issue

I've tried following methods for detecting back press in an activity:

private static final String TAG = "PRESSED";

@Override
public void onBackPressed() {
    Log.i(TAG,"BACK");
    super.onBackPressed();
}

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        Log.i(TAG, "Back pressed");
    }
    return super.onKeyUp(keyCode, event);
}

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        Log.i(TAG, "Back pressed 1");
    }
    return super.onKeyDown(keyCode, event);
}

UPDATE:

The onKeyDown, onKeyUp and onBackPressed WORK on pressing back button on "On screen buttons" at bottom of screen, which is this:

But DO NOT WORK WHEN pressing the Up button in title bar, which is this:

Why don't they work when Up button in title bar is pressed?

Solution

Maybe this? It makes ActionBar back button work like the back button.

@Override
    public boolean onOptionsItemSelected(MenuItem item) {
            if (item.getItemId() == android.R.id.home) {
                    onBackPressed();
                    return true;
            }
            return super.onOptionsItemSelected(item);
    }

Answered By - Andrea Dusza