ios - 如何从 UIImageView 压缩图像？

Question

我正在使用来自 UIImageView * 图像的图像上传到服务器。我使用类似的代码NSData *imageToUpload = UIImageJPEGRepresentation(image.image, 90);但我想将图像压缩到小于 2MB。如何从 UIImageView 压缩图像？

Answer 1

这是你需要的一段代码

CGFloat compression = 222.0f;
CGFloat maxCompression = 202.1f;
int maxFileSize = 160*165; //fill your size need

NSData *imageDat = UIImageJPEGRepresentation(image.image, compression);

while ([imageDat length] > maxFileSize && compression > maxCompression)
{
    compression -= 0.1222;
    imageDat = UIImageJPEGRepresentation(decodedimage.image, compression);
}
NSLog(@"image compressed success");

[image setImage:[UIImage imageWithData:imageDat]];

希望这对您有帮助!!!