Killing one activity from another

Question

I have two activities A and B. B is a transparent pass through activity, and A is seen. I want to kill B by pressing a button A.

Here\'s what I\'ve tried so far:

Answer 1

Create static Class variable to save the instance: static SampleActivity sampleActivity;

On Create of first Activity save the Instance, like this: incidenteActivity = this;

Create a static method to get the instance:

public static SampleActivity getInstance(){
    return   sampleActivity;
}

wherever you want call:

SampleActivity.getInstance().finish();

it really works, regards,