如何移动和裁剪蒙版图像的图像？
我借助以下链接成功遮盖了图片：
如何屏蔽UIImageView
在上面的链接中有两个图像image.png和mask.png ，
掩盖图像后，我想裁剪结果图像。
我担心的是我想裁剪名为image.png的图像，但是mask.png应该保持原样。 我正在使用KICropImageView https://github.com/zhangzhixun/CropImageDemo裁剪图像。
但是当我滚动图像时，我的整个结果图像滚动，但我只想滚动image.png不mask.png图像。
任何想法我怎么能做到这一点？
您可以使用PanGesture ..
- (void)viewDidLoad { [super viewDidLoad]; UIPanGestureRecognizer *pan1 = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handlePanImage:)]; self.imageview.userInteractionEnabled = YES; [self.imageview addGestureRecognizer:pan1]; } **after called Method handlePanImage..** - (void)handlePanImage:(UIPanGestureRecognizer *)sender { static CGPoint originalCenter; if (sender.state == UIGestureRecognizerStateBegan) { originalCenter = sender.view.center; sender.view.alpha = 0.8; [sender.view.superview bringSubviewToFront:sender.view]; } else if (sender.state == UIGestureRecognizerStateChanged) { CGPoint translation = [sender translationInView:self.view]; sender.view.center = CGPointMake(originalCenter.x + translation.x, originalCenter.y + translation.y); } else if (sender.state == UIGestureRecognizerStateEnded || sender.state == UIGestureRecognizerStateCancelled || sender.state == UIGestureRecognizerStateFailed) { // do whatever post dragging you want, eg // snap the piece into place [UIView animateWithDuration:0.2 animations:^{ CGPoint center = sender.view.center; center.x = round(center.x / 50.0) * 50.0; center.y = round(center.y / 50.0) * 50.0; sender.view.center = center; sender.view.alpha = 1.0; }]; } }