ios - PHPhotoLibrary se bloqueó al obtener placeholder ForCreatedAsset

objective-c xcode

Question

Intento poner la imagen en el álbum personalizado con este código:

PHAssetCollection *album = [self getMyAlbum];
UIImage *image = [self getMyImage];

[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
    PHAssetChangeRequest *createAssetRequest = [PHAssetChangeRequest creationRequestForAssetFromImage:image];

    PHObjectPlaceholder * placeHolder = createAssetRequest.placeholderForCreatedAsset;

    PHAssetCollectionChangeRequest *albumChangeRequest = [PHAssetCollectionChangeRequest changeRequestForAssetCollection:album];

    if(placeHolder){
        [albumChangeRequest addAssets:@[ placeHolder ]];
    }

} completionHandler:^(BOOL success, NSError *error) {
    //doesen''t matter
}];

Por lo tanto, recibo muchos errores en los registros de los usuarios en esta fila createAssetRequest.placeholderForCreatedAsset

me gusta

1 CoreFoundation __exceptionPreprocess + 1245624

2 libobjc.A.dylib objc_exception_throw + 34136

3 fotos __48- [PHChangeRequestHelper generarUUIDIfNecessary] _block_invoke + 116552

2 libdispatch.dylib _dispatch_semaphore_wait_slow + 79828

3 fotos - [PHChangeRequestHelper generarUUIDIfNecessary] + 115992

4 fotos - [PHAssetCreationRequest placeholderForCreatedAsset] + 244020

por lo que [PHChangeRequestHelper generateUUIDIfNecessary] me falla.

Veo esto solo en iOS> 10 , y no puedo reproducirlo en el simulador.

¿Qué es? ¿Cómo arreglar eso?

Answer 1

Por favor intente código debajo.

__block NSString* tempPath;
// Add it to the photo library
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
    PHAssetChangeRequest *assetChangeRequest = [PHAssetChangeRequest creationRequestForAssetFromImage:image];

    if (self.assetCollection) {
        PHAssetCollectionChangeRequest *assetCollectionChangeRequest = [PHAssetCollectionChangeRequest changeRequestForAssetCollection:self.assetCollection];
        [assetCollectionChangeRequest addAssets:@[[assetChangeRequest placeholderForCreatedAsset]]];
    }
    tempPath = [[assetChangeRequest placeholderForCreatedAsset] localIdentifier];
} completionHandler:^(BOOL success, NSError *error) {
    PHFetchResult* assetResult = [PHAsset fetchAssetsWithLocalIdentifiers:@[tempPath] options:nil];
    if (!success) {
        NSLog(@"Error creating asset: %@", error);
    } else {
        PHFetchResult* assetResult = [PHAsset fetchAssetsWithLocalIdentifiers:@[tempPath] options:nil];
        PHAsset *asset = [assetResult firstObject];
        [[PHImageManager defaultManager] requestImageDataForAsset:asset options:nil resultHandler:^(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info) {
            UIImage* newImage = [UIImage imageWithData:imageData];
            self.imgView.image = newImage;
        }];
    }
}];

Answer 2

Puede utilizar el siguiente Código.

`#pragma mark - Create Custom Album name

-(void)saveImageWithAlbumNameAndImage:(UIImage *)image
{
__block PHFetchResult *photosAsset;
__block PHAssetCollection *collection;
__block PHObjectPlaceholder *placeholder;

// Find the album
PHFetchOptions *fetchOptions = [[PHFetchOptions alloc] init];
fetchOptions.predicate = [NSPredicate predicateWithFormat:@"title = %@", MKCustomPhotoAlbumName];
collection = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum
                                                      subtype:PHAssetCollectionSubtypeAny
                                                      options:fetchOptions].firstObject;
// Create the album
if (!collection)
{
    [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
        PHAssetCollectionChangeRequest *createAlbum = [PHAssetCollectionChangeRequest creationRequestForAssetCollectionWithTitle:MKCustomPhotoAlbumName];

        placeholder = [createAlbum placeholderForCreatedAssetCollection];
    } completionHandler:^(BOOL success, NSError *error) {
        if (success)
        {
            PHFetchResult *collectionFetchResult = [PHAssetCollection fetchAssetCollectionsWithLocalIdentifiers:@[placeholder.localIdentifier]
                                                                                                        options:nil];
            collection = collectionFetchResult.firstObject;
        }
    }];
}

// Save to the album
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
    PHAssetChangeRequest *assetRequest = [PHAssetChangeRequest creationRequestForAssetFromImage:image];
    placeholder = [assetRequest placeholderForCreatedAsset];
    photosAsset = [PHAsset fetchAssetsInAssetCollection:collection options:nil];
    PHAssetCollectionChangeRequest *albumChangeRequest = [PHAssetCollectionChangeRequest changeRequestForAssetCollection:collection
                                                                                                                  assets:photosAsset];
    [albumChangeRequest addAssets:@[placeholder]];
} completionHandler:^(BOOL success, NSError *error) {
    if (success)
    {
        NSString *UUID = [placeholder.localIdentifier substringToIndex:36];
        NSLog(@"UUID : %@",UUID);
    }
    else
    {
        NSLog(@"%@", error);
    }
}];
}`

Aquí MKCustomPhotoAlbumName es la macro y coloca el nombre del álbum que querías crear

Como puede observar a partir del código, su imagen se guarda en el álbum creado habitualmente en la aplicación de fotos iPhone. y si ya está creado, se guarda directamente en él.