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我有一个由 UICollectionView 处理的图像网格。我想做的是在选择单元格时通过放大图像转换到另一个视图控制器，并使该图像占据子视图控制器中屏幕的大部分。有什么好的方法可以创建这种行为。

感谢所有的帮助！

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2 回答 2

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在子视图控制器中，您可以添加滚动视图并可以添加类似的属性。

   scrollView.bouncesZoom = YES;
   scrollView.delegate = self;
   scrollView.clipsToBounds = YES;

添加图像视图：-

   imageView = [[UIImageView alloc] initWithImage:[UIImage imgnamed:@"image01.png"]];
   imageView.userIntractionEnabled = YES;
   imageView.autoSizingMask = UIViewAutoresizingFlexibleWidth;

   [scrollview addSubView:imageView];

计算最小缩放级别：-

   float minimumScale = [scrollView frame].size.width / [imageView frame].size.width;
   scrollView.maximumZoomScale = 3.0   // you can exeed as per your requirment
   scrollView.minimumZoomScale = minimumScale;
   scrollView.zoomScale = minimumScale;

希望这对您有所帮助。如果有任何问题或问题，请在评论中提问。

于 2013-07-22T11:57:21.770 回答
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For this, I would use a custom segue. In the UICollectionView documentation, Apple recommends using a fake cell when moving it across your CollectionView. You can do this with storyboard or programatically. Inside your -prepareForSegue: method, place the image from the selected cell on the screen centered over the cell, then animate the scaling in the segue.

Custom Segue guide: https://developer.apple.com/library/ios/featuredarticles/ViewControllerPGforiPhoneOS/CreatingCustomSegues/CreatingCustomSegues.html

Ray's site is also boss: http://www.raywenderlich.com/5191/beginning-storyboards-in-ios-5-part-2

于 2013-08-20T17:26:56.147 回答