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摘要： http://marshal.easymorse.com/archives/tag/ios-ui通过层（layer），可以给视图增加边框和圆角等。比如类似下面的效果：写法：- (void)loadView { [[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation: UIStatusBarAnimationSlide]; UIImageView *contentView = [[MyUIImageView alloc] initWithFrame:[[UIScreen mainScreen] applica 阅读全文