iOS UITapGestureRecognizer

示例

在这种情况下，UITapGestureRecognizer使用目标self和初始化，该目标action是一个具有单个参数的方法：a UITapGestureRecognizer。

初始化后，将其添加到应该可以识别轻敲的视图中。

迅速

override func viewDidLoad() {
    super.viewDidLoad()
    let recognizer = UITapGestureRecognizer(target: self,
                                            action: #selector(handleTap(_:)))
    view.addGestureRecognizer(recognizer)
}

func handleTap(recognizer: UITapGestureRecognizer) {

}

目标C

- (void)viewDidLoad {
    [super viewDidLoad];
    UITapGestureRecognizer *recognizer =
        [[UITapGestureRecognizer alloc] initWithTarget:self
                                                action:@selector(handleTap:)];
    [self.view addGestureRecognizer:recognizer];
}

- (void)handleTap:(UITapGestureRecognizer *)recognizer {

}

通过UITapGestureRecognizer解除键盘的示例：

首先，创建用于关闭键盘的功能：

func dismissKeyboard() {
        view.endEditing(true)
    }

然后，在视图控制器中添加一个轻击手势识别器，调用我们刚做的方法

let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
        view.addGestureRecognizer(tap)

获取手势位置UITapGestureRecognizer（Swift 3）的示例：

func handleTap(gestureRecognizer: UITapGestureRecognizer) {
print("tap working")
ifgestureRecognizer.state== UIGestureRecognizerState.recognized
   {
     print(gestureRecognizer.location(in: gestureRecognizer.view))
   }
}