ios - 多个视频上传进度

Question

寻找例如带有进度视图的多个视频上传。在这里，我已经定义了步骤。

1. 打开图库并选择视频。
2. 从图库中选择视频，并在编译选择后创建拇指图像。
3. 在表格视图或集合视图中显示带有缩略图的所有选定视频
4. 在 Tableview 或 Collection 视图中显示视频上传过程的进度。

任何人都知道如何做到这一点，我会对我有所帮助。

可能我们可以使用 NSUrlsession 上传任务但无法实现。

Answer 1

1. 为此，您可以使用MWPhotoBrowser

2. 您可以使用以下方法生成所选视频的缩略图。

   - (UIImage *)generateThumbImage : (NSString *)filepath {
         NSURL *url = [NSURL fileURLWithPath:filepath];
         AVAsset *asset = [AVAsset assetWithURL:url];
         AVAssetImageGenerator *imageGenerator = [[AVAssetImageGenerator alloc]initWithAsset:asset];
         imageGenerator.appliesPreferredTrackTransform = YES;
         CMTime time = [asset duration];
         time.value = 2;
         CGImageRef imageRef = [imageGenerator copyCGImageAtTime:time actualTime:NULL error:NULL];
         UIImage *thumbnail = [UIImage imageWithCGImage:imageRef];
         CGImageRelease(imageRef);  // CGImageRef won't be released by ARC
   
         return thumbnail;
   }
   

3. 为此，您可以检查“MWPhotoBrowser”并将生成的缩略图传递给显示。

4. 为此，您可以使用AFNetworking 3.0。并创建一个NSObject文件类来管理您的所有文件。创建具有 imageView 和 progressView 的 collectionView。该 collectionView 类型是文件类型。

   @interface File : NSObject
   
   @property (nonatomic, strong) NSString *fullFilePath;
   @property (nonatomic) float overAllProgress;
   - (void)sendFile;
   
   @end
   
   
   @implementation File
   
   - (void)sendFile {
       NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST"            URLString:@"http://localhost/upload.php" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
   
        [formData appendPartWithFileURL:[NSURL fileURLWithPath:self.fullFilePath] name:@"photo_path" fileName:self.relativePath mimeType:@"video/quicktime" error:nil];
   
       } error:nil];
   
       AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
   
       NSURLSessionUploadTask *uploadTask;
       uploadTask = [manager
           uploadTaskWithStreamedRequest:request
           progress:^(NSProgress * _Nonnull uploadProgress) {
         // This is not called back on the main queue.
         // You are responsible for dispatching to the main queue for UI updates
         dispatch_async(dispatch_get_main_queue(), ^{
             //Update the progress view
             self.overAllProgress = uploadProgress.fractionCompleted;
             [[NSNotificationCenter defaultCenter] postNotificationName:@"imageprogress" object:self]
            });
         }
         completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) {
           if (error) {
              NSLog(@"Error: %@", error);
           } else {
              NSLog(@"%@ %@", response, responseObject);
           }
         }];
   
         [uploadTask resume]; 
   
     @end
   

现在您需要处理文件进度通知。如下所示。

-(void) viewWillAppear:(BOOL)animated{
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(fileProgress:) name:@"imageprogress" object:nil];
}

- (void)viewDidUnload{
   [super viewDidUnload];
   // Release any retained subviews of the main view.
  [[NSNotificationCenter defaultCenter] removeObserver:self name:@"imageprogress" object:nil];
 }

- (void)fileProgress:(NSNotification *)notif{

      File * info = [notif object];
      if([_arrFiles containsObject:info]){
          NSInteger row = [_arrFiles indexOfObject:info];
          NSIndexPath * indexPath = [NSIndexPath indexPathForRow:row inSection:0];
          UICollectionViewCell *cell = [self.collectionView cellForItemAtIndexPath:indexPath];

         [cell.progressView setProgress:info.overAllProgress animated:YES]

       }
}