Question

This occurs both when the back button is overwritten or if I just make it an onclick on some other button.

What happens is that when the key is pressed, all activities are cleared, and the android’s homescreen is shown for a second or so before the other.class is shown.

This does not occur on any other device I have tested.

Any input?

@Override
        public boolean onKeyDown(int keyCode, KeyEvent event) {

            if (keyCode == KeyEvent.KEYCODE_BACK) {
                Intent switchScreen = new Intent(this, other.class);
                switchScreen.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(switchScreen);        }
            return super.onKeyDown(keyCode, event);
        }

Answer 1

That is correct behavior.. However, the problem can be solved.

Solution

onCreate() of the other-Activity

Intent lIntent = new Intent(this, other.class);
lIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(lIntent);

and in your Manifest.xml

<activity android:name=".other"
          android:launchMode="singleTop">
...
</activity>