小编Jus*_*ard的帖子

我试图覆盖UITapGestureRecognizer的自定义子类中的touchesBegan。代码如下。我是从这里得到的：如何加快对双击的识别？。这是公认的答案，但我遇到一个错误：方法未从其超类覆盖任何方法。我已经检查过了，这似乎确实是touchesBegan的签名。救命？

import UIKit

class UIShortTapGestureRecognizer: UITapGestureRecognizer {
    let tapMaxDelay: Double = 0.3

    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        super.touchesBegan(touches, withEvent: event)
        delay(tapMaxDelay) {
        // Enough time has passed and the gesture was not recognized -> It has failed.
            if  self.state != UIGestureRecognizerState.Ended {
                self.state = UIGestureRecognizerState.Failed
            }
        }
    }


}

我试图在用户按下按钮时使用loadnibnamed加载一个名为"AddProgramView"的xib字段.我在故事板中创建了xib,在xib视图中放置了各种子视图,并将出口连接到名为AddProgramView的相应swift文件.当我加载xib时,没有任何子视图出现.他们都失踪了.救命？这是我的代码

在我的主视图控制器中:

@IBAction func addProgram(sender: UIButton) {

    if let _ = addProgramView {
        addProgramView!.frame = CGRectMake(0, self.window!.frame.origin.y + self.window!.frame.height, self.window!.frame.width, CGFloat(325))
    }
    else {
        let addProgramViews = NSBundle.mainBundle().loadNibNamed("AddProgramView", owner: self, options: nil)
        addProgramView = addProgramViews.first as? AddProgramView

        addProgramView!.frame = CGRectMake(0, self.window!.frame.origin.y + self.window!.frame.height, self.window!.frame.width, CGFloat(325))

        window?.addSubview(addProgramView!)
    }

    window?.bringSubviewToFront(addProgramView!)

    UIView.animateWithDuration(0.3, delay: 0.0, options: UIViewAnimationOptions.CurveEaseOut, animations: {
        self.addProgramView!.frame.origin.y -= CGFloat(325)
        }, completion: nil)
}

AddProgramView.swift文件:

class AddProgramView: UIView {


    @IBOutlet weak var nameField: UITextField!
    @IBOutlet weak var cancelButton: UIButton!

    @IBOutlet weak var …