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时间：2023-10-19 14:27:55 下载该word文档
UIImage图片处理图片的处理大概分截图(capture,缩放(scale,设定大小(resize,存储(save1.等比率缩放-(UIImage*scaleImage:(UIImage*imagetoScale:(floatscaleSize{UIGraphicsBeginImageContext(CGSizeMake(image.size.width*scaleSize,image.size.height*scaleSize;[imagedrawInRect:CGRectMake(0,0,image.size.width*scaleSize,image.size.height*scaleSize];UIImage*scaledImage=UIGraphicsGetImageFromCurrentImageContext(;UIGraphicsEndImageContext(;returnscaledImage;}2.自定长宽-(UIImage*reSizeImage:(UIImage*imagetoSize:(CGSizereSize
{UIGraphicsBeginImageContext(CGSizeMake(reSize.width,reSize.height;[imagedrawInRect:CGRectMake(0,0,reSize.width,reSize.height];UIImage*reSizeImage=UIGraphicsGetImageFromCurrentImageContext(;UIGraphicsEndImageContext(;returnreSizeImage;}3.处理某个特定View只要是继承UIView的object都可以处理必须先importQuzrtzCore.framework-(UIImage*captureView:(UIView*theView{CGRectrect=theView.frame;UIGraphicsBeginImageContext(rect.size;CGContextRefcontext=UIGraphicsGetCurrentContext(;[theView.layerrenderInContext:context];UIImage*img=UIGraphicsGetImageFromCurrentImageContext(;UIGraphicsEndImageContext(;returnimg;}
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