拖動時的視圖旋轉

Question

我想在拖動時稍微旋轉UIView。我設法使用UIPanGestureRecognizer來拖動。我也嘗試使用CGAffineTransformRotate旋轉，它工作。但是，當我同時應用拖動和旋轉時，UIView只能旋轉，並且不會在超級視圖中拖動。這裏是我在手勢處理器中做的事情：

CGPoint translation = [gesture translationInView:self.view]; 
    // to drag 
    gesture.view.center = CGPointMake(gesture.view.center.x + translation.x, gesture.view.center.y + translation.y); 
    // to rotate 
    gesture.view.transform = CGAffineTransformRotate(gesture.view.transform, degreesToRadians(translation.x)/4); 
    // return to default so that it doesn't accumulate 
    [gesture setTranslation:CGPointMake(0, 0) inView:self.view]; 

我該如何解決這個問題？

編輯： 這裏是整個代碼：

- (void)handlePan:(UIPanGestureRecognizer*)gesture{ 
if (gesture.state == UIGestureRecognizerStateBegan) { 
    // Save initial post center for snapping 
    point = CGPointMake(gesture.view.center.x, gesture.view.center.y); 
} else if (gesture.state == UIGestureRecognizerStateChanged){ 
    // Translate user movement across the screen to dragging coordinates 
    CGPoint translation = [gesture translationInView:self.view]; 

    gesture.view.center = CGPointMake(gesture.view.center.x + translation.x, gesture.view.center.y + translation.y); 

    CGAffineTransform rotate = CGAffineTransformRotate(gesture.view.transform, degreesToRadians(translation.x)/4); 

    gesture.view.transform = rotate;//CGAffineTransformConcat(translate, rotate); 

    [gesture setTranslation:CGPointMake(0, 0) inView:self.view]; 


} else if (gesture.state == UIGestureRecognizerStateEnded){ 
    // Animate snap back to place 
    [UIView animateWithDuration:0.2 animations:^{ 
     gesture.view.transform = CGAffineTransformIdentity; 
     // [self.imagePost setCenter:point]; 
    }]; 
} 

}

Answer 1

嘗試加入這個方法：

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer 
{ 
if (![gestureRecognizer isKindOfClass:[UITapGestureRecognizer class]] && ![otherGestureRecognizer isKindOfClass:[UITapGestureRecognizer class]]) { 
    return YES; 
} 

return NO; 

}