1 //对图片尺寸进行压缩--
2 -(UIImage*)imageWithImage:(UIImage*)image scaledToSize:(CGSize)newSize
3 {
4 // Create a graphics image context
5 UIGraphicsBeginImageContext(newSize);
6
7 // Tell the old image to draw in this new context, with the desired
8 // new size
9 [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
10
11 // Get the new image from the context
12 UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
13
14 // End the context
15 UIGraphicsEndImageContext();
16
17 // Return the new image.
18 return newImage;
19 }
//按比例压缩
NSData *imageData = UIImageJPEGRepresentation(self.uploadImage , 0.75);
