swift 2 TapGestureRecognizer 不接受自己作为目标

Question

我正在做一个项目，然后我需要添加一个 tapGesture，问题是我无法将自己添加为目标，我不断收到此错误：

Cannot convert value of type 'NSObject -> () -> ViewController' to expected argument type 'AnyObject?'

这是我的代码：

我也试过了：

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

但我得到了同样的错误

Answer 1

将该行放在 viewDidLoad 而不是 class 级别：

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    let tap = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
}

根据我在您编辑问题时看到的内容，您的 tap 变量超出范围。

swift 2 TapGestureRecognizer 不接受自己作为目标

swift 2 TapGestureRecognizer doesn't accept self as a target

ios

swift

swift2

uitapgesturerecognizer