Question

Curious, if I can invoke some 3rd party activity, and then in onActivityResult read my original intent data.

Answer 1

I does not make any sence for me, really… Anyway, as the onActivityResult will be always part of the same Activity that launched the 3rd party activity you just have to save that data somewhere on your activity. For instance:

private Intent intentForThat3rdPartyActivity = null; // long name, huh?

public void hereYouLaunchThings(){
    if( intentForThat3rdPartyActivity == null ){
        intentForThat3rdPartyActivity = new Intent(YourActitity.this, The3rdPartyActivity.class);
        intentForThat3rdPartyActivity.putExtra("weird", "data");
    }
    startActivityForResult(intentForThat3rdPartyActivity, 9999);
}

@Override
protected void onActivityResult(int requestCode, int resultCode,
                                 Intent data) {
    // this should have the same data you passed
    String foo = intentForThat3rdPartyActivity.getStringExtra("weird");
}