iOS 区域截屏及scrollView截屏

截取view,返回图片 + (UIImage *)captureScreenView:(UIView *)view { UIGraphicsBeginImageContextWithOptions(view.size, YES, 0.0); //currentView 当前的view 建立一个基于位图的图形上下文并指定大小为 [view.layer renderInContext:

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