touchesEnd失效

错误描述：

如下图所示，我需要仿照微信，做一个录制、发送、取消录制语音的功能，但当手指移出“长按 开始”区域后，touchesEnd方法监听不到手指离开屏幕的事件。。。 截图.png

在我的实现中，下方输入栏输入栏（红色矩形框起来的区域）是一个单独的view，用一个单独的类进行管理，其touch方法实现如下：

    //触摸开始
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        //开始录音
        self.beginRecord()
        let touch = touches.first
        if let _ = touch?.location(in: self.voicePressView) {
            print("按到录音按钮，开始讲话。。")
            self.voicePressView.text =  "长按 结束"
            self.voicePressView.backgroundColor = UIColor.colorWithRGB(198, green: 199, blue: 202, alpha: 1)
            
        }
    }
    
    //手指移动（输入栏）
    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
        let touch = touches.first
        if let y = touch?.location(in: self.voicePressView).y{
            if y < 0 {
                if self.isRecordCancel == false {
                    self.isRecordCancel = true
                }
            }else {
                if self.isRecordCancel {
                    self.isRecordCancel = false
                }
            }
        }
    }
    
    //手指从屏幕拿起（输入栏）
    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {        
        if self.voicePressView.text == "长按 结束"{
            self.endRecord()
        }
        self.voicePressView.text = "长按 开始"
        self.voicePressView.backgroundColor = UIColor.colorWithRGB(235, green: 240, blue: 243, alpha: 1)
    }

如开篇所说，当手指移出输入栏区域，touchesend方法监听不到手指离开屏幕事件了！如图，此时就没办法将录音状态提示框（屏幕中间的灰色方框）移出了

长按.png

[图片上传中...(截图.png-4a22b9-1538033146585-0)]

问题的分析：

因为手指不是在监听的视图离开的，自然监听不到touchesEnd方法。

改进

在聊天界面写上touchesEnd监听。。。

结果

失败

改进

查阅得知，需要在子视图上添加

superview?.touchesBegan(touches, with: event)
super.touchesMoved(touches, with: event)
super.touchesEnded(touches, with: event)

成功

聊天界面重要监听到了touchesEnd方法。。

值得注意的是：如果只写
super.touchesEnded(touches, with: event)
不写
superview?.touchesBegan(touches, with: event)
super.touchesMoved(touches, with: event)
同样也是监听不到的。

修改后

输入栏的touch方法

//触摸开始
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        //开始录音
        self.beginRecord()
        let touch = touches.first
        if let _ = touch?.location(in: self.voicePressView) {
            print("按到录音按钮，开始讲话。。")
            self.voicePressView.text =  "长按 结束"
            self.voicePressView.backgroundColor = UIColor.colorWithRGB(198, green: 199, blue: 202, alpha: 1)
        }
        super.touchesBegan(touches, with: event)
    }
    
    //手指移动（输入栏）
    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
        //
        let touch = touches.first
        if let y = touch?.location(in: self.voicePressView).y{
            if y < 0 {
                if self.isRecordCancel == false {
                    self.isRecordCancel = true
                }
            }else {
                if self.isRecordCancel {
                    self.isRecordCancel = false
                }
            }
        }
        super.touchesMoved(touches, with: event)
    }
    
    //手指从屏幕拿起（输入栏）
    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        if self.voicePressView.text == "长按 结束"{
            self.endRecord()
        }
        self.voicePressView.text = "长按 开始"
        self.voicePressView.backgroundColor = UIColor.colorWithRGB(235, green: 240, blue: 243, alpha: 1)        
        super.touchesEnded(touches, with: event)
    }

聊天界面touch方法

//触摸结束，移除录音状态视图
    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        self.tableView.isUserInteractionEnabled = true
        self.recordV.removeFromSuperview()
        super.touchesEnded(touches, with: event)
    }