iOS

//保存图片到相册

 //image是要保存的图片
- (void) saveImage:(UIImage *)image{
    
    if (image) {
        UIImageWriteToSavedPhotosAlbum(image, self, @selector(savedPhotoImage:didFinishSavingWithError:contextInfo:), nil);
    };

}
//保存完成后调用的方法
- (void) savedPhotoImage:(UIImage*)image didFinishSavingWithError: (NSError *)error contextInfo: (void *)contextInfo {
    if (error) {
        NSLog(@"保存图片出错%@", error.localizedDescription);
    }
    else {
        NSLog(@"保存图片成功");
    }
}

// 2.保存视频到相册

//videoPath为视频下载到本地之后的本地路径
- (void)saveVideo:(NSString *)videoPath{
    if (_videoPath) {
            if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum([_videoPath path])) {
                //保存相册核心代码
                UISaveVideoAtPathToSavedPhotosAlbum([_videoPath path], self, @selector(video:didFinishSavingWithError:contextInfo:), nil);
            }
    }
}
//保存视频完成之后的回调
- (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo {
    if (error) {
        NSLog(@"保存视频失败%@", error.localizedDescription);
    }
    else {
        NSLog(@"保存视频成功");
    }
}