如何检查UIView和UIImageView被触摸或不在iPhone SDK？

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    UITouch *touch = [touches anyObject]; 
    [touch locationInView:self.view]; 
    if([touch.view isKindOfClass:[UIImageView class]]) 
    { 
     ///This is UIImageView 
    } 
    else if([touch.view isKindOfClass:[UIView class]]) 
    { 
     ///This is UIView 
    } 
}

，当你在那个时候移动UIImageView它的变化与UIView波纹管代码BACKGROUNDCOLOR ...

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event 
{ 
    UITouch *tap = [touches anyObject]; 
    CGPoint pointToMove = [tap locationInView:self.view]; 
    if([tap.view isKindOfClass:[UIImageView class]]) 
    { 
     UIImageView *tempImage=(UIImageView *) tap.view; 
     if ([yourView pointInside:pointToMove withEvent:event]) 
     { 
      [yourView setBackgroundColor:[UIColor redColor]]; 
     } 
     else{ 
      [yourView setBackgroundColor:[UIColor clearColor]];//set backcolor which you want when `UIImageView` move outside of yourView 
     } 
    } 
}

也适用于移动请参阅此链接的答案Move UIImage only inside of another UIImage

来源

2013-04-30 10:17:20

你不检查'UIImageView'是否与'UIView'相交。 – Mar0ux 2013-04-30 13:37:58

@ Mar0ux你想说什么？也如果你知道最好的答案，然后张贴你的答案..这里最新错误？它的工作和我测试.. – 2013-05-01 04:04:39

试试这个：触摸左上角的'UIImageView'并拖动它，使'UIView'的左上角触及'UIImageView'的右下角。请参阅[Ashini的答案]（http://stackoverflow.com/a/16297553/440060）了解它应该如何完成。 – Mar0ux 2013-05-01 04:08:18

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{ 
    if (CGRectIntersectsRect(imageview.frame, view.frame)) { 
     view.backgroundColor=[UIColor redcolor]; 
    } 
}

来源

2013-04-30 10:22:07 Ashini

+1好答案。 – Bhavin 2013-04-30 11:18:34

小心翼翼，我因为没有向代码添加解释而多次投了票。为完整答案添加所发生事件的摘要。 – 2013-04-30 13:28:00

通过使用UIPanGestureRecognizer

- (void)onDraggingLetter:(UIPanGestureRecognizer *)panGR { 

CGPoint translation = [panGR translationInView:self.view]; 

    if (panGR.state == UIGestureRecognizerStateBegan) { 

    } else if (panGR.state == UIGestureRecognizerStateChanged) { 

     CGRect _rect = panGR.view.frame; 
     _rect.origin.x = dragPoint.x + translation.x; 
     _rect.origin.y = dragPoint.y + translation.y; 
     panGR.view.frame = _rect; 

     if (CGRectIntersectsRect(panGR.view.frame, greenView.frame)) { 

       greenView.backgroundColor=[UIColor redColor]; 
     } 

    } else if (panGR.state == UIGestureRecognizerStateEnded) { 

    } 
}

来源

2013-04-30 10:29:12 Venkat