iOS：壓縮圖片，ios壓縮圖片

iOS：壓縮圖片，ios壓縮圖片

UIImage*img= [self imageWithImageSimple:image scaledToSize:CGSizeMake(210.0, 210.0)];//壓縮圖片- (UIImage*)imageWithImageSimple:(UIImage*)image scaledToSize:(CGSize)newSize{     // Create a graphics image context     UIGraphicsBeginImageContext(newSize); // Tell the old image to draw in this newcontext, with the desired         // new size     [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];         // Get the new image from the context     UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();          // End the context     UIGraphicsEndImageContext();          // Return the new image.     return newImage;}