///绘图显示 -(UIImage*)OriginImage:(UIImage *)image scaleToSize:(CGSize)size { UIGraphicsBeginImageContext(size); //size 为CGSize类型,即你所需要的图片尺寸 [image drawInRect:CGRectMake(0, 0, size.width, size.height)]; UIImage* scaledImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return scaledImage; //返回的就是已经改变的图片 }
参考:
https://blog.csdn.net/u012198553/article/details/43051005
https://www.cnblogs.com/xm5mao/p/3964701.html