iOS实现视频下载并自动保存到相册功能

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

///@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]];
}

以上就是本文的全部内容，希望对大家的学习有所帮助

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