iOS实现视频下载并自动保存到相册功能

这篇文章主要为大家详细介绍了ios 视频下载功能实现，并自动保存到相册，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

iOS 视频下载功能实现，并自动保存到相册(有MBProgressHUD 可以解开注释)，供大家参考，具体内容如下

视频类定义属性

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									///@property (nonatomic,strong) MBProgressHUD *hud;

									@property (nonatomic,strong) NSURLSession *session;

									///视频播放和下载用的url 

									@property (nonatomic,strong) NSURL *url;

				?

									///初始化session

									- (NSURLSession *)session{

									 if(_session == nil)

									 {

									 NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];

									 _session = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:nil];

									 }

									 return _session;

									}

									///下载

									- (void)download:(UIBarButtonItem *)btnItem{

									 ///初始化Session

									 _session = [XMConciseVedioPlayer getSession:_session];

									 ///self.hud = [MBProgressHUD showHUDAddedTo:self animated:YES];

									 [self downloadFileWithUrl:self.url];

									}

									///通过url下载

									- (void)downloadFileWithUrl:(NSURL *)url{

									 NSURLRequest *request = [NSURLRequest requestWithURL:url cachePolicy:1.0 timeoutInterval:5.0];

									 ///下载任务

									 [[self.session downloadTaskWithRequest:request]resume];

									 NSURLSessionDownloadTask *task = [_session downloadTaskWithURL:url completionHandler:^(NSURL *location, NSURLResponse *response, NSError *error) {

									 ///[self.hud setLabelText:[NSString stringWithFormat:@"下载成功"]];

									 NSFileManager *fileManger = [NSFileManager defaultManager];

									 ///沙盒Documents路径

									 NSString *documents = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];

									 //拼接文件绝对路径

									 NSString *path = [documents stringByAppendingPathComponent:response.suggestedFilename];

									 //视频存放到这个位置

									 [fileManger moveItemAtURL:location toURL:[NSURL fileURLWithPath:path] error:nil];

									 ///保存到相册

									 UISaveVideoAtPathToSavedPhotosAlbum(path, self, @selector(video:didFinishSavingWithError:contextInfo:), nil);

									 }];

									 ///开始下载任务

									 [task resume];

									}

									//保存视频完成之后的回调

									- (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo {

									 if (!error) {

									 ///[self.hud setLabelText:[NSString stringWithFormat:@"保存到相册成功"]];

									 } else {

									 ///[self.hud setLabelText:[NSString stringWithFormat:@"下载失败"]];

									 }

									 ///[self.hud hide:YES afterDelay:3.0];

									}

									// 进度数据

									- (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didWriteData:(int64_t)bytesWritten totalBytesWritten:(int64_t)totalBytesWritten totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite{

									 float progress = (float)totalBytesWritten / totalBytesExpectedToWrite;

									 long pro = (long)(progress *100);

									 ///[self.hud setLabelText:[NSString stringWithFormat:@"下载进度:%ld%%",pro]];

									}