Android: Go back to previous activity

Question

I want to do something simple on android app. How is it possible to go back to a previous activity.

What code do I need to go back to previous activity

Answer 1

Just try this in, first activity

Intent mainIntent = new Intent(Activity1.this, Activity2.class);
this.startActivity(mainIntent);

In your second activity

@Override
public void onBackPressed() {
    this.finish();
}