Question

查看具有进度视图的多个视频上传示例。在这里，我已经定义了步骤。

打开图库并选择视频。
从图库中选择视频，编辑完选择后，创建拇指图像。
在tableview或集合视图中使用拇指图像显示所有选定的视频
在Tableview或Collection视图中显示带有进度的视频上传过程。

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 UPload任务但无法实现。

Answer 1

为此您可以使用MWPhotoBrowser

您可以使用以下方法生成所选视频的拇指图像。

- (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;
}

为此您可以查看＆＃34; MWPhotoBrowser＆＃34;并将生成的拇指图像传递给显示。

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]

       }
}

多个视频上传进度

1 个答案: