android - onBackPressed to hide Not destroy activity

Question

i know how to cancel back keypress, so that the activity / main window stays visible:

public void onBackPressed() {
    return;             
}

my aim is to hide the activity, however, without finishing it, how do you do that in the onBackPressed event?

i.e. I would like to get as far as onPause(), but not evoke the onBackPressed() default behaviour that essentially calls finish(). another way to put it is that i would like to mimic onUserLeaveHint() ?

any help appreciated!

Answer 1

If you want to mimic the "Home" button on specific Activities just do this:

Below API 5:

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    if (keyCode == KeyEvent.KEYCODE_BACK) {
        moveTaskToBack(true);
        return true;
    }
    return super.onKeyDown(keyCode, event);
}

Above and on API 5:

@Override
public void onBackPressed() {
  moveTaskToBack(true);
}

It will move the Task to background.. when you return, it will be as it was.

You can see more information about this here: Override back button to act like home button