- (void)viewDidLoad {
   [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib.     UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap1)]; singleTap.numberOfTapsRequired = 1; singleTap.numberOfTouchesRequired = 1; [self.view addGestureRecognizer:singleTap]; UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap2)]; doubleTap.numberOfTapsRequired = 2; doubleTap.numberOfTouchesRequired = 1; [self.view addGestureRecognizer:doubleTap]; [singleTap requireGestureRecognizerToFail:doubleTap]; UITapGestureRecognizer *tripleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap3)]; tripleTap.numberOfTapsRequired = 3; tripleTap.numberOfTouchesRequired = 1; [self.view addGestureRecognizer:tripleTap]; [doubleTap requireGestureRecognizerToFail:tripleTap]; UITapGestureRecognizer *quadrupleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap4)]; quadrupleTap.numberOfTapsRequired = 4; quadrupleTap.numberOfTouchesRequired = 1; [self.view addGestureRecognizer:quadrupleTap]; [tripleTap requireGestureRecognizerToFail:quadrupleTap]; }

- (void)tap1 {
   singleLabel.text = @"Single Tap Detected"; [self performSelector:@selector(eraseMe:) withObject:singleLabel afterDelay:1.6f]; } - (void)tap2 {
   doubleLabel.text = @"Double Tap Detected"; [self performSelector:@selector(eraseMe:) withObject:doubleLabel afterDelay:1.6f]; } - (void)tap3 {
   tripleLabel.text = @"Triple Tap Detected"; [self performSelector:@selector(eraseMe:) withObject:tripleLabel afterDelay:1.6f]; } - (void)tap4 {
   quadrupleLabel.text = @"Quadruple Tap Detected"; [self performSelector:@selector(eraseMe:) withObject:quadrupleLabel afterDelay:1.6f]; } - (void)eraseMe:(UILabel *)label {
   label.text = @""; }

- (void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
   UITouch *touch = [touches anyObject]; NSUInteger tapCout = [touch tapCount]; switch (tapCout) {
   case 1: [self performSelector:@selector(tap1) withObject:nil afterDelay:.4];//延迟执行             break; case 2: [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(tap1) object:nil];//取消tap1             [self performSelector:@selector(tap2) withObject:nil afterDelay:.4]; break; case 3: [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(tap2) object:nil];//取消tap2             [self performSelector:@selector(tap3) withObject:nil afterDelay:.4]; break; case 4: [NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(tap3) object:nil];//取消tap3             [self tap4]; break; default: break; } }