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- (NSData *)imageWithImage:(UIImage*)image scaledToSize:(CGSize)newSize{//压缩图片 UIGraphicsBeginImageContext(newSize); [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)]; UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return UIImageJPEGRepresentation(newImage, 0.5); }转载地址:http://ncsni.baihongyu.com/