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- (UIImage *)clipImage: (UIImage *)image inRect: (CGRect) rect
{//返回image中rect范围内的图片
CGImageRef imageRef = CGImageCreateWithImageInRect(image.CGImage, rect);
UIImage *subImage = [UIImage imageWithCGImage:imageRef];
return subImage;
}
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原文地址：http://www.cnblogs.com/y16879w/p/4432686.html
