public class CloseLockerActivity extends BaseActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_close_locker);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        /** Window flag: when set the window will cause the keyguard to
         * be dismissed, only if it is not a secure lock keyguard.  Because such
         * a keyguard is not needed for security, it will never re-appear if
         * the user navigates to another window (in contrast to
         * {@link #FLAG_SHOW_WHEN_LOCKED}, which will only temporarily
         * hide both secure and non-secure keyguards but ensure they reappear
         * when the user moves to another UI that doesn't hide them).
         * If the keyguard is currently active and is secure (requires an
         * unlock pattern) than the user will still need to confirm it before
         * seeing this window, unless {@link #FLAG_SHOW_WHEN_LOCKED} has
         * also been set.
         *
         * public static final int FLAG_DISMISS_KEYGUARD = 0x00400000;
         */
        getWindow().addFlags((WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD));
        MainHandler.getInstance().postDelayed(this::finish, 1000);
    }

    public static void open(Context context) {
        Intent intent = new Intent(context, CloseLockerActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(intent);
    }

}