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Using an Image for the Layer’s Content Because a layer is just a container for managing a bitmap image, you can assign an image directly to the layer’ 阅读全文
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You will want to use the [UIImage imageWithContentsOfFile:@""] method, as that doesn't cache images. imageNamed: caches any images that are loaded thr 阅读全文
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https://stablekernel.com/view-controller-in-ios-6/ Some of you may have noticed that your view controller in iOS 6 no longer gets sent to viewWillUnlo 阅读全文