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：aUITapGestureRecognizer。
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（Swift3）的示例：
func handleTap(gestureRecognizer: UITapGestureRecognizer) {
print("tap working")
ifgestureRecognizer.state== UIGestureRecognizerState.recognized
{
print(gestureRecognizer.location(in: gestureRecognizer.view))
}
}
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