KillReceiver.java

public final class KillReceiver extends BroadcastReceiver {

    private Activity activity;

    public static final String ACTION_KILL_ACTIVITY = "ACTION_KILL_ACTIVITY";

    public KillReceiver(Activity activity) {
        this.activity = activity;
        if(activity == null) throw new NullPointException("activity == null");
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        activity.finish();
    }

    public static Intent createIntent(Context context) {
        return new Intent(context.getPackageName() + "." + ACTION_KILL_ACTIVITY);
    }

    public KillReceiver register() {
        activity.registerReceiver(this, new IntentFilter(activity.getPackageName() + "." + ACTION_KILL_ACTIVITY));
        return this;
    }
}