1、UIImage转换为NSData
UIImage *aimage=[UIImage imageNamed:@"layne.png"]; NSData *imageData = UIImagePNGRepresentation(aimage);
或
UIImage *aimage=[UIImage imageNamed:@"layne.png"]; NSData *imageData = UIImageJPEGRepresentation(aimage,1.0);
UIImageJPEGRepresentation包含一个压缩系数,用于指定图片压缩程度,0(most)~1.0(least)
时间: 2024-08-03 05:52:43