ios视频下载到相册(转载)

//控件 属性

@property(nonatomic,strong)UIButton*cancelBtn;

@property(nonatomic,strong)UIButton*sendBtn;

@property(nonatomic,strong)CircleProgressView*progressView;

@property(nonatomic,strong)VedioDetailModel*model;

@property(nonatomic,strong)NSURLSessionDownloadTask*downloadTask;

/** 下载视频 */

-(void)startDownLoadVedioWithModel:(VedioDetailModel*)model{

_model=model;

NSURLSessionConfiguration*config=[NSURLSessionConfiguration defaultSessionConfiguration];

NSURLSession*session=[NSURLSession sessionWithConfiguration:config delegate:selfdelegateQueue:[NSOperationQueue mainQueue]];

self.downloadTask=[session downloadTaskWithURL:[NSURL URLWithString:model.vedioUrl]];

[self.downloadTask resume];

}

#pragmamark NSSessionUrlDelegate

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

//下载进度CGFloat progress=totalBytesWritten/(double)totalBytesExpectedToWrite;dispatch_async(dispatch_get_main_queue(),^{

//进行UI操作 设置进度条self.progressView.progressValue=progress;

self.progressView.contentLabel.text=[NSString stringWithFormat:@"%.2f%%",progress*100];

});

}

//下载完成 保存到本地相册

-(void)URLSession:(NSURLSession*)session downloadTask:(NSURLSessionDownloadTask*)downloadTaskdidFinishDownloadingToURL:(NSURL*)location{

//1.拿到cache文件夹的路径NSString*cache=[NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask,YES)lastObject];

//2,拿到cache文件夹和文件名NSString*file=[cache stringByAppendingPathComponent:downloadTask.response.suggestedFilename];[[NSFileManager defaultManager]moveItemAtURL:location toURL:[NSURL fileURLWithPath:file]error:nil];

//3，保存视频到相册if(UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(file)){

//保存相册核心代码

UISaveVideoAtPathToSavedPhotosAlbum(file,self,nil,nil);

}

}

//控件本身的代理方法 更新控件样子

-(void)progressOverAndChangeViewContents{

MyLog(@"下载完成");

self.sendBtn.enabled=YES;

self.titleBtn.enabled=NO;

[self.titleBtn setTitle:@"视频已下载到本地"forState:UIControlStateNormal];

self.contentBtn.enabled=NO;

[self.contentBtn setTitle:@"商品简介已复制"forState:UIControlStateNormal];

}