Android: Go back to previous activity

Question

I want to do something simple on android app. How is it possible to go back to a previous activity.

What code do I need to go back to previous activity

Answer 1

Are you wanting to take control of the back button behavior? You can override the back button (to go to a specific activity) via one of two methods.

For Android 1.6 and below:

@Override
public boolean onKeyDown(int keyCode, KeyEvent event)  {
    if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
        // do something on back.
        return true;
    }

    return super.onKeyDown(keyCode, event);
}

Or if you are only supporting Android 2.0 or greater:

@Override
public void onBackPressed() {
    // do something on back.
    return;
}

For more details: http://android-developers.blogspot.com/2009/12/back-and-other-hard-keys-three-stories.html