ios7 CameraPickerController圖像凍結

Question

我有相機視圖控制器這個簡單的代碼：

UIImagePickerController picker = new UIImagePickerController(); 
picker.PrefersStatusBarHidden(); 
picker.SourceType = UIImagePickerControllerSourceType.Camera; 
UIImagePickerControllerCameraDevice dev = picker.CameraDevice; 
PresentViewController (picker, false, null); 
picker.FinishedPickingMedia += (object sender, UIImagePickerMediaPickedEventArgs e) => BeginInvokeOnMainThread (delegate {DismissViewController (false, null);}); 

當應用程序啓動時，我可以捕捉照片正常，但是當我再次呈現選擇器，相機視圖顯示，但幀（圖像）顯示和凍結。如果我在設備周圍移動圖像不會改變。換句話說，我可以使用一次相機，但我不能使用它兩次。我做錯了什麼？在iOS6設備它完美的作品。

Answer 1

製作一個pickerDelegate類爲我做了訣竅。你只需要在構造函數中傳遞當前的VC，以便在VC中處理圖像。

PickerDelegate

private class pickerDelegate : UIImagePickerControllerDelegate 
     { 
      private yourVC _vc; 

      public pickerDelegate (yourVC controller) : base() 
      { 
       _vc = controller; 
      } 

      public override void FinishedPickingImage (UIImagePickerController picker, UIImage image, NSDictionary editingInfo) 
      { 
       //Do something whit the image 
       _vc.someButton.SetBackgroundImage (image, UIControlState.Normal); 

       //Dismiss the pickerVC 
       picker.DismissViewController (true, null); 
      } 
     } 

viewDidLoad中

imagePicker = new UIImagePickerController(); 

//Set the Delegate and pass the current VC 
imagePicker.Delegate = new pickerDelegate (this);