application should minimize on backkey press

Question

In my application I have a requrement like, If I press backkey application should not exit(as i have only one activity in my app) instead it should minimize the app as like its happening with the home key press. Any help is appreciated..

Answer 1

You can probably just save whatever you need in Activity.onSaveInstanceState() and restore the saved info in Activity.onRestoreInstanceState as in this example Saving Android Activity state using Save Instance State

Answer 2

// Add this line inside back pressed.

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

}