一句话处理服务器头像的尺寸

//图片压缩

- (NSData *)imageWithImage:(UIImage*)newImage{

NSData *data=UIImageJPEGRepresentation(newImage, 1.0);

if (data.length>100*1024) {

if (data.length>1024*1024) {//1M以及以上

data=UIImageJPEGRepresentation(newImage, 0.1);

}else if (data.length>512*1024) {//0.5M-1M

data=UIImageJPEGRepresentation(newImage, 0.5);

}else if (data.length>200*1024) {//0.25M-0.5M

data=UIImageJPEGRepresentation(newImage, 0.9);

}

}

return data;

}