iOS开发笔记之保存图片到相册

UIImageWriteToSavedPhotosAlbum(image, self, @selector(savedPhotoImage:didFinishSavingWithError:contextInfo:), nil);

// 保存图片完成
- (void)savedPhotoImage:(UIImage*)image didFinishSavingWithError:(NSError *)error contextInfo: (void *)contextInfo {
    if (error) {
        // 保存失败
    } else {
        // 保存成功
    }
}