UIView的範疇導致無法識別選擇錯誤

Question

我，是造成我想不通這是該類別的.H錯誤一個UIView類別：

#import <UIKit/UIKit.h> 

typedef NS_ENUM(NSUInteger, BCRectEdge) { 
    BCRectEdgeTop = 0, 
    BCRectEdgeLeft = 1, 
    BCRectEdgeBottom = 2, 
    BCRectEdgeRight = 3 
}; 

@interface UIView (Genie) 

/* 
* After the animation has completed the view's transform will be changed to match the destination's rect, i.e. 
* view's transform (and thus the frame) will change, however the bounds and center will *not* change. 
*/ 

- (void)genieInTransitionWithDuration:(NSTimeInterval)duration 
         destinationRect:(CGRect)destRect 
         destinationEdge:(BCRectEdge)destEdge 
          completion:(void (^)())completion; 



/* 
* After the animation has completed the view's transform will be changed to CGAffineTransformIdentity. 
*/ 

- (void)genieOutTransitionWithDuration:(NSTimeInterval)duration 
          startRect:(CGRect)startRect 
          startEdge:(BCRectEdge)startEdge 
          completion:(void (^)())completion; 

@end 

然後它我將其導入到一個視圖控制器。創建一個新的UIView並使用其中一種方法。它建議這種方法，因爲我開始打字，如果我定義它，它會去正確的地方。但是，當我運行它，它說：

'-[UIView genieInTransitionWithDuration:destinationRect:destinationEdge:completion:]: unrecognized selector sent to instance 0x1552c220' 

有什麼想法？快把我逼瘋。

Answer 1

擴展名在創建時出於某種原因未被添加到目標中。添加它解決了問題。