How to prevent the activity from loading twice on pressing the button

Question

I am trying to prevent the activity from loading twice if I press the button twice instantly after the first click.

I have an activity which loads on click of a butt

Answer 1

You could just override startActivityForResult and use instance variable:

boolean couldStartActivity = false;

@Override
protected void onResume() {
    super.onResume();

    couldStartActivity = true;
}

@Override
public void startActivityForResult(Intent intent, int requestCode, Bundle options) {
    if (couldStartActivity) {
        couldStartActivity = false;
        intent.putExtra(RequestCodeKey, requestCode);
        super.startActivityForResult(intent, requestCode, options);
    }
}