iOS : Save image with custom resolution

Question

Hi I am try to capture a view then save as an image into Photo Library , but I need create a custom resolution for captured image , here is my code but when app saves the im

Answer 1

CGSize sizePic = CGSizeMake(320, 460);
    UIGraphicsBeginImageContext(sizePic);
    [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *imagePic = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    UIImageWriteToSavedPhotosAlbum(imagePic, nil, nil, nil);