flash!
UIWindow* window = [[UIApplication sharedApplication] keyWindow]; UIView* snapshotView = [[UIView alloc] init]; snapshotView.translatesAutoresizingMaskIntoConstraints = false; [window addSubview:snapshotView]; [NSLayoutConstraint activateConstraints:@[ [snapshotView.topAnchor constraintEqualToAnchor:window.topAnchor], [snapshotView.leadingAnchor constraintEqualToAnchor:window.leadingAnchor], [snapshotView.trailingAnchor constraintEqualToAnchor:window.trailingAnchor], [snapshotView.bottomAnchor constraintEqualToAnchor:window.bottomAnchor] ]]; snapshotView.backgroundColor = [UIColor blueColor]; [UIView animateWithDuration:0.2 animations:^{ snapshotView.alpha = 0; } completion:^(BOOL finished) { [snapshotView removeFromSuperview]; }];