setResult does not work when BACK button pressed

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?

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();
}

Activity result must be set before finish() is called. Clicking BACK actually calls finish() on your activity, so you can use the following snippet:

@Override
public void finish() {
    Intent data = new Intent();
    setResult(RESULT_OK, data); 

    super.finish();
}

If you call NavUtils.navigateUpFromSameTask(); in onOptionsItemSelected(), finish() is called, but you will get the wrong result code. So you have to call finish() not navigateUpFromSameTask in onOptionsItemSelected(). wrong requestCode in onActivityResult

If you want to set some custom RESULT_CODE in onBackPressed event then you need to first set the result and then call the super.onBackPressed() and you will receive the same RESULT_CODE in the caller activity's onActivityResult method

    @Override
    public void onBackPressed()
    {
         setResult(SOME_INTEGER);
         super.onBackPressed();
    }

I refactored my code. Initially I prepared some data and set it as activity result in onDestroy (this did not work). Now I set activity data each time the data to be returned is updated, and have nothing in onDestroy.

setResult does not work when BACK button pressed

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