UISwipeGestureRecognizer不能在iOS 4.3中工作

Question

此代碼在以前的iOS版本中運行良好，但現在在iOS 4.3中不再有效。任何人都有什麼需要改正的建議？

在FinishedLaunching事件中，我調用AddSyncGesture，然後每當設備旋轉時，我有一個通知程序調用該方法以及垂直更改方向更改，因此我必須刪除並重新添加它。

 UISwipeGestureRecognizer sgr = null; 

    public void AddSyncGesture() 
    { 
     try { 
      if (sgr != null) 
       window.RemoveGestureRecognizer(sgr); 
      else 
       sgr = new UISwipeGestureRecognizer(); 
     } catch (Exception ex) { 
      Logger.LogException(ex.Message, ex, "AddSyncGesture"); 
     } 
     try { 
      sgr.NumberOfTouchesRequired = 2; 
      if (UIDevice.CurrentDevice.Orientation == UIDeviceOrientation.LandscapeRight || UIDevice.CurrentDevice.Orientation == UIDeviceOrientation.LandscapeLeft) 
       sgr.Direction = UISwipeGestureRecognizerDirection.Left | UISwipeGestureRecognizerDirection.Right; 
      else 
       sgr.Direction = UISwipeGestureRecognizerDirection.Up | UISwipeGestureRecognizerDirection.Down; 
      sgr.Delegate = new SwipeRecognizerDelegate(); 
      sgr.AddTarget(this, SwipeSelector); 
      window.AddGestureRecognizer(sgr); 
     } catch (Exception ex) { 
      Logger.LogException(ex.Message, ex, "AddSyncGesture"); 
     } 
    } 

    Selector SwipeSelector 
    { 
     get { return new Selector("HandleSwipe"); } 
    } 

    [Export("HandleSwipe")] 
    public void HandleSwipe(UISwipeGestureRecognizer recognizer) 
    { 
     if (Utils.CanSync) 
      Application.Synchronizer.Synchronize(true,Application.ProgressView);  
    } 

    class SwipeRecognizerDelegate : MonoTouch.UIKit.UIGestureRecognizerDelegate 
    { 
     public override bool ShouldReceiveTouch (UIGestureRecognizer recognizer, UITouch touch) 
     { 
      return true; 
     } 
    } 

Answer 1

這就是我使用的。不知道這是唯一可能的方式，但沒有問題的工作：

protected void InitRecognizers() 
    { 
     var _swiperRight = new UISwipeGestureRecognizer(); 
     _swiperRight.Direction = UISwipeGestureRecognizerDirection.Right; 
     _swiperRight.AddTarget(this, new MonoTouch.ObjCRuntime.Selector("SwipeNext")); 
     this.View.AddGestureRecognizer(_swiperRight); 
    } 

    [Export("SwipeNext")] 
    public virtual void Swipe(UIGestureRecognizer rec) 
    { 
     //your code here 
    }