UISwipeGesture'无法识别的选择器发送到实例' [英] UISwipeGesture 'unrecognized selector sent to instance'

问题描述

如果有人可以帮我解决这个问题，那就太好了！我花了几个小时试图修复，没有运气

错误...

2016-06-23 20：30：43.341057 Scaling Rings [408：38903] [DYMTLInitPlatform]平台初始化成功
2016-06-23 20：30：43.750822 Scaling Rings [408：38776] Metal GPU帧捕获已启用
2016-06-23 20：30：43.751531缩放环[408：38776]金属API验证已启用
2016-06-23 20：30：48.293661缩放环[408：38776] - [Scaling_Rings.MenuScene slide：]：无法识别的选择器发送到实例0x145e1c410
2016-06-23 20：30：48.299061缩放环[408：38776] *由于未捕获的异常'NSInvalidArgumentException'终止应用程序，原因：' - [Scaling_Rings.MenuScene slide：]：无法识别的选择器发送到实例0x145e1c410'
* 第一次抛出调用堆栈：
（0x190ad9980 0x1900d44bc 0x190ae0778 0x190add6e0 0x1909de61c 0x196e13754 0x196e16e5c 0x1969f6b3c 0x196894900 0x196e0747c 0x196e07100 0x196e06338 0x196892a2 4 0x1968638c8 0x19701efd4 0x19701941c 0x190a8a3f0 0x190a89cc8 0x190a87938 0x1909ba2e4 0x19239315c 0x1968ce6fc 0x1968c9438 0x1000a1d44 0x19055c600）
libc ++ abi.dylib：以NSException类型的未捕获异常终止
（lldb）

代码......

  import Foundation 
 import SpriteKit 
 
 var startRing = SKShapeNode（）
 
 class MenuScene：SKScene {
 
 func slide（sender：AnyObject）{
 debugPrint（WORKS） ）
} 
 
覆盖func didMove（查看：SKView）{
 
 let upSwipe = UISwipeGestureRecognizer（target：self，action：Selector（slide：）） ）
 upSwipe.direction = .up 
 view.addGestureRecognizer（upSwipe）
 
} 
 
} 
  

解决方案

您需要将选择器声明更改为 #selector（slide）并在方法参数 fu之前添加下划线nc slide（_ sender：UISwipeGestureRecognizer）：

  class GameScene：SKScene {
 
 func slide（_ sender：UISwipeGestureRecognizer）{
 print（WORKS）
} 
覆盖func didMove（查看：SKView）{
 let upSwipe = UISwipeGestureRecognizer（ target：self，action：#selector（slide））
 upSwipe.direction = .up 
 view.addGestureRecognizer（upSwipe）
} 
} 
  

If someone could please help me resolve this issue, would be great! I have spent a few hours trying to fix, with no luck

Error...

2016-06-23 20:30:43.341057 Scaling Rings[408:38903] [DYMTLInitPlatform] platform initialization successful 2016-06-23 20:30:43.750822 Scaling Rings[408:38776] Metal GPU Frame Capture Enabled 2016-06-23 20:30:43.751531 Scaling Rings[408:38776] Metal API Validation Enabled 2016-06-23 20:30:48.293661 Scaling Rings[408:38776] -[Scaling_Rings.MenuScene slide:]: unrecognized selector sent to instance 0x145e1c410 2016-06-23 20:30:48.299061 Scaling Rings[408:38776] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Scaling_Rings.MenuScene slide:]: unrecognized selector sent to instance 0x145e1c410' * First throw call stack: (0x190ad9980 0x1900d44bc 0x190ae0778 0x190add6e0 0x1909de61c 0x196e13754 0x196e16e5c 0x1969f6b3c 0x196894900 0x196e0747c 0x196e07100 0x196e06338 0x196892a24 0x1968638c8 0x19701efd4 0x19701941c 0x190a8a3f0 0x190a89cc8 0x190a87938 0x1909ba2e4 0x19239315c 0x1968ce6fc 0x1968c9438 0x1000a1d44 0x19055c600) libc++abi.dylib: terminating with uncaught exception of type NSException (lldb)

Code...

import Foundation
import SpriteKit

var startRing = SKShapeNode()

class MenuScene: SKScene {

    func slide(sender: AnyObject){
        debugPrint("WORKS")
    }

    override func didMove(to view: SKView) {

        let upSwipe = UISwipeGestureRecognizer(target: self, action: Selector("slide:"))
        upSwipe.direction = .up
        view.addGestureRecognizer(upSwipe)

    }

}

解决方案

You need to change your selector declaration to #selector(slide) and add an underscore before your method parameter func slide(_ sender: UISwipeGestureRecognizer):

class GameScene: SKScene {

    func slide(_ sender: UISwipeGestureRecognizer){
        print("WORKS")
    }
    override func didMove(to view: SKView) {
        let upSwipe = UISwipeGestureRecognizer(target: self, action: #selector(slide))
        upSwipe.direction = .up
        view.addGestureRecognizer(upSwipe)
    }
}

这篇关于UISwipeGesture'无法识别的选择器发送到实例'的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！