Question

I have three activities, a, b, c. Activity b will start activity c. In activity c when i press the back key, activity c will finish() and activity b will show just as it was left.

That is not that hard, what i am wanting to do is when i finish() activity c, i want to finish() activity b at the same time in order to show activity a.

Does anyone have any idea on how to finish an activity from another activity?

Answer 1

To achieve this best way is to use startActivityForResult and onActivityResult in conjugation.

From Activity A, start activity B and then from B start activity C for a result using startActivityForResult()

In Activity C, when the user triggers back or Destroy()

set a result that will inform A to finish as well,

Call finish() in C.

When B receives that result from C, B calls finish() on itself as well.

In the parent activity, while triggering the child activity, use the following command:-

startActivityForResult(intent,variable(int));

and override the onActivityResult Method in the following manner in Activity B:-

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if(resultCode==2){
        finish();
    }
}

Now, in the child activity C, override onStop and onDestroy in the following manner:-

protected void onStop() {
    setResult(2);
    super.onStop();
}

@Override
protected void onDestroy() {
    setResult(2);
    super.onDestroy();
}