android - setResult does not work when BACK button pressed

Question

I am trying to setResult after the BACK button was pressed. I call in onDestroy

Intent data = new Intent();
setResult(RESULT_OK, data) 

But when it comes to

onActivityResult(int requestCode, int resultCode, Intent data) 

the resultCode is 0 (RESULT_CANCELED) and data is 'null'.

So, how can I pass result from activity terminated by BACK button?

Answer 1

You need to overide the onBackPressed() method and set the result before the call to superclass, i.e

@Override
public void onBackPressed() {
    Bundle bundle = new Bundle();
    bundle.putString(FIELD_A, mA.getText().toString());
    
    Intent mIntent = new Intent();
    mIntent.putExtras(bundle);
    setResult(RESULT_OK, mIntent);
    super.onBackPressed();
}