Mehrere Videos zu uicollectionview hinzufügen - objective-c

Question

Ich habe Probleme beim Hinzufügen mehrerer Videos zu einer uicollectionview. Ich kann mehrere Bilder zu einer uicollectionview hinzufügen, und sie werden korrekt angezeigt. Wenn ich jedoch versuche, mehrere Videos hinzuzufügen, wird nur das zuletzt hinzugefügte Video wiedergegeben.

// Wählen Sie Bild/Video von Telefon Galerie

- (void)chooseExistingImagesButton:(id)sender { 

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeSavedPhotosAlbum]) { 
    UIImagePickerController *picker = [[UIImagePickerController alloc]init]; 
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
    picker.mediaTypes = [[NSArray alloc] initWithObjects:(NSString *)kUTTypeMovie, (NSString *)kUTTypeVideo, (NSString*)kUTTypeImage, nil]; 
    picker.allowsEditing = NO; 
    picker.delegate = self; 

    [self presentViewController:picker animated:YES completion:nil]; 
} 
else { 
    UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:nil message:@"Sorry, we cannot detect a camera on this device." delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil, nil]; 
    [alertView show]; 
} 

[imageCollectionView reloadData]; 
[videoCollectionView reloadData]; } 

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { 
[self targetImageArray]; 
[self targetVideoArray]; 

NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType]; 

if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) { 
    NSString *selectedImage = [info objectForKey:UIImagePickerControllerOriginalImage]; 
    [targetImageArray addObject:selectedImage]; 
    [targetImageArray componentsJoinedByString:@","]; 
} 
else if (([mediaType isEqualToString:(NSString *)kUTTypeVideo]) || ([mediaType isEqualToString:(NSString *)kUTTypeMovie])) { 
    NSString *moviePath = [info objectForKey:UIImagePickerControllerMediaURL]; 
    [targetVideoArray addObject:moviePath]; 
    [targetVideoArray componentsJoinedByString:@","]; 
} 

[imageCollectionView reloadData]; 
[videoCollectionView reloadData]; 

[self dismissViewControllerAnimated:YES completion:^{NSLog(@"Finished Picking Image or Video");}]; } 

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker { 
[self dismissViewControllerAnimated:YES completion:^{NSLog(@"Image picker view dismissed");}]; } 

// Lade die Kollektion

- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView { 
return 1; } 

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section { 
if (collectionView.tag == ImageCell) { 
    return [targetImageArray count]; 
} 
if (collectionView.tag == VideoCell) { 
    return [targetVideoArray count]; 
} 
return 0; } 

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath { 

if (collectionView.tag == VideoCell) { 
    static NSString *videoCellIdentifier = @"VideoCell"; 
    TargetVideoCell *videoCell = [collectionView dequeueReusableCellWithReuseIdentifier:videoCellIdentifier forIndexPath:indexPath]; 

    movieUrl = [NSURL URLWithString:[NSString stringWithFormat:@"%@", [targetVideoArray objectAtIndex:indexPath.row]]]; 

    AVURLAsset *asset = [AVURLAsset URLAssetWithURL:movieUrl options:nil]; 
    AVAssetImageGenerator *generator = [AVAssetImageGenerator assetImageGeneratorWithAsset:asset]; 
    generator.appliesPreferredTrackTransform = YES; 
    UIImage *image = [UIImage imageWithCGImage:[generator copyCGImageAtTime:CMTimeMake(0, 1) actualTime:nil error:nil]]; 

    videoCell.targetMovieView.image = image; 

    [moviePlayer.view setFrame:videoCell.targetMovieView.frame]; 
    moviePlayer = [[MPMoviePlayerViewController alloc] initWithContentURL:movieUrl]; 

    return videoCell; 
} 


if (collectionView.tag == ImageCell) { 
    static NSString *imageCellIdentifier = @"ImageCell"; 
    TargetImageCell *imageCell = [collectionView dequeueReusableCellWithReuseIdentifier:imageCellIdentifier forIndexPath:indexPath]; 

    imageCell.targetImageView.image = [targetImageArray objectAtIndex:indexPath.row]; 
    return imageCell; 
} 

return 0; } 

// Video abspielen

- (IBAction)playMovie:(id)sender { 
[self presentMoviePlayerViewControllerAnimated:moviePlayer]; 
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(playMovieFinished:) name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer]; } 

- (void)playMovieFinished:(NSNotification *)theNotification { 
[[NSNotificationCenter defaultCenter] removeObserver:self name:MPMoviePlayerPlaybackDidFinishNotification object:moviePlayer]; 
[moviePlayer.view removeFromSuperview]; 
moviePlayer = nil; 
[self dismissMoviePlayerViewControllerAnimated]; } 

Answer 1

Auf jeder cellForRow Sie init Ihren Film Spieler wieder. moviePlayer - das ist Eigentum Ihrer Klasse.

Lösung:

1. jede Zelle muss hat Movie-Player besitzen.

   videoCell.moviePlayer = [[MPMoviePlayerViewController alloc] initWithContentURL: movieUrl]; [videoCell.moviePlayer.view setFrame: videoCell.targetMovieView.bounds];

2. hat einen Movie-Player und Fangen Fall Taste