IOS开发（72）之监听捕获轻击的手势动作

1 前言
使用UITapGestureRecognizer 监听捕获用户点击了屏幕的事件。

2 代码实例
ZYViewController.m

[plain]
(void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    self.view.backgroundColor = [UIColor whiteColor];
    //创建手势
    self.tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTaps:)];
    /* 屏幕上必须有两个手指 */
    self.tapGestureRecognizer.numberOfTouchesRequired = 2;
    /* 必须敲击3下 */
    self.tapGestureRecognizer.numberOfTapsRequired = 3;
    [self.view addGestureRecognizer:self.tapGestureRecognizer];

}
- (void) handleTaps:(UITapGestureRecognizer*)paramSender{
    NSUInteger touchCounter = 0;
    for (touchCounter = 0;touchCounter < paramSender.numberOfTouchesRequired;touchCounter++){
        //获得手指位置
        CGPoint touchPoint =[paramSender locationOfTouch:touchCounter inView:paramSender.view];
        NSLog(@"Touch #%lu: %@",(unsigned long)touchCounter+1, NSStringFromCGPoint(touchPoint));
    }
}

- (void)viewDidLoad
{
    [super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
    self.view.backgroundColor = [UIColor whiteColor];
    //创建手势
    self.tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTaps:)];
    /* 屏幕上必须有两个手指 */
    self.tapGestureRecognizer.numberOfTouchesRequired = 2;
    /* 必须敲击3下 */
    self.tapGestureRecognizer.numberOfTapsRequired = 3;
    [self.view addGestureRecognizer:self.tapGestureRecognizer];

}
- (void) handleTaps:(UITapGestureRecognizer*)paramSender{
    NSUInteger touchCounter = 0;
    for (touchCounter = 0;touchCounter < paramSender.numberOfTouchesRequired;touchCounter++){
        //获得手指位置
        CGPoint touchPoint =[paramSender locationOfTouch:touchCounter inView:paramSender.view];
        NSLog(@"Touch #%lu: %@",(unsigned long)touchCounter+1, NSStringFromCGPoint(touchPoint));
    }
}
运行结果

两根手指连续三次点击屏幕后控制台显示

2013-05-13 15:58:36.524 UITapGestureTest[4482:c07] Touch #1: {180, 321}

2013-05-13 15:58:36.525 UITapGestureTest[4482:c07] Touch #2: {140, 119}

补充：移动开发 , IOS ,