objective c-多個gestureRecognizer問題

多個gestureRecognizer問題

在parentClass(繼承自UIView)中：

[self addGestureRecognizer:_tapGesture]; // _tapGesture is UITapGestureRecognizer, with delegate on parentClass

在someClass中：

[_myImageView addGestureRecognizer:_imageViewGestureRecognizer]; // _imageViewGestureRecognizer is UITapGestureRecognizer, with delegate on someClass

問題：我每次點擊ImageView時，兩個手勢都會被觸發。我只要_imageViewGestureRecognizer 觸發。

試過：

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)recognizer shouldReceiveTouch:(UITouch *)touch {
   UIView *gestureView = recognizer.view;
   CGPoint point = [touch locationInView:gestureView];
   UIView *touchedView = [gestureView hitTest:point withEvent:nil];
   if ([touchedView isEqual:_imageViewGestureRecognizer]) {
     return NO;
   }

   return YES;
}

最佳回答：

拿到附加手勢的view後，判斷view的類型，即可相應做出處理

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)recognizer shouldReceiveTouch:(UITouch *)touch {
   UIView *gestureView = recognizer.view;
　 if ([gestureView isKindOfClass:[UIImageView class]]) {
         ///...to do 
   }
}