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PHAssetCollection fetchAssetCollectionsWithType Crash

The following method was queued by default in the global queue to retrieve multiple photos from the device. if the system version is larger than iOS 8, the Photosframework is used , otherwise ALAssetLibrary.

dispatch_semaphore_t sema = dispatch_semaphore_create(0);

dispatch_async(dispatch_get_global_queue(0, 0), ^{
   [self getPhotos:^(NSArray *photos) {
       dispatch_semaphore_signal(sema);
    }];
}

dispatch_time_t timeout = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(10 * NSEC_PER_SEC));

dispatch_semaphore_wait(sema, timeout);


- (void)getPhotos:(MyCallBack)callback {

  Class PHPhotoLibrary_class = NSClassFromString(@"PHPhotoLibrary");

   if (PHPhotoLibrary_class) {

    PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];


    if (status != PHAuthorizationStatusAuthorized)
    {
        return;
    }

    PHFetchResult *smartAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeSmartAlbumUserLibrary options:nil];

  }       
}

If the application crashes on a 64-bit device, such as the iPhone 5S and newer, the stack trace looks like this.

Exception Type:  SIGTRAP
Exception Codes: TRAP_BRKPT at 0x190c41b60
Crashed Thread:  25

Thread 25 Crashed:
0   PhotoLibraryServices            0x0000000190c41b60 +[PLModelMigrator _validateCurrentModelVersionFailedWithNoVersionFromServer] :444 (in PhotoLibraryServices)
1   PhotoLibraryServices            0x0000000190c41ef8 +[PLModelMigrator _validateCurrentModelVersionAttempt:] :316 (in PhotoLibraryServices)
2   PhotoLibraryServices            0x0000000190c41ef8 +[PLModelMigrator _validateCurrentModelVersionAttempt:] :316 (in PhotoLibraryServices)
3   PhotoLibraryServices            0x0000000190c41ef8 +[PLModelMigrator _validateCurrentModelVersionAttempt:] :316 (in PhotoLibraryServices)
4   PhotoLibraryServices            0x0000000190c41ef8 +[PLModelMigrator _validateCurrentModelVersionAttempt:] :316 (in PhotoLibraryServices)
5   PhotoLibraryServices            0x0000000190c41ef8 +[PLModelMigrator _validateCurrentModelVersionAttempt:] :316 (in PhotoLibraryServices)
6   PhotoLibraryServices            0x0000000190c41ef8 +[PLModelMigrator _validateCurrentModelVersionAttempt:] :316 (in PhotoLibraryServices)
7   PhotoLibraryServices            0x0000000190c41ef8 +[PLModelMigrator _validateCurrentModelVersionAttempt:] :316 (in PhotoLibraryServices)
8   PhotoLibraryServices            0x0000000190c41ef8 +[PLModelMigrator _validateCurrentModelVersionAttempt:] :316 (in PhotoLibraryServices)
9   PhotoLibraryServices            0x0000000190c41ef8 +[PLModelMigrator _validateCurrentModelVersionAttempt:] :316 (in PhotoLibraryServices)
10  PhotoLibraryServices            0x0000000190c41ef8 +[PLModelMigrator _validateCurrentModelVersionAttempt:] :316 (in PhotoLibraryServices)
11  PhotoLibraryServices            0x0000000190c43688 +[PLModelMigrator createDatabase] :508 (in PhotoLibraryServices)
12  PhotoLibraryServices            0x0000000190b7c1cc -[PLPhotoLibrary loadDatabase:] :808 (in PhotoLibraryServices)
13  PhotoLibraryServices            0x0000000190b71f70 -[PLPhotoLibrary initWithTransientContext:name:] :560 (in PhotoLibraryServices)
14  Photos                          0x0000000191722418 ___45-[PHPhotoLibrary backgroundQueuePhotoLibrary]_block_invoke :60 (in Photos)
15  libdispatch.dylib               0x0000000184bb21bc __dispatch_client_callout :16 (in libdispatch.dylib)
16  libdispatch.dylib               0x0000000184bb2fb0 _dispatch_once_f :56 (in libdispatch.dylib)
17  Photos                          0x00000001917223d4 -[PHPhotoLibrary backgroundQueuePhotoLibrary] :156 (in Photos)
18  Photos                          0x0000000191722604 -[PHPhotoLibrary photoLibraryForCurrentQueueQoS] :80 (in Photos)
19  Photos                          0x0000000191722578 -[PHPhotoLibrary managedObjectContextForCurrentQueueQoS] :24 (in Photos)
20  Photos                          0x00000001917611bc -[PHQuery _createFetchRequestIncludingBasePredicate:] :140 (in Photos)
21  Photos                          0x0000000191761c5c -[PHQuery fetchRequest] :52 (in Photos)
22  Photos                          0x0000000191783988 -[PHFetchResult initWithQuery:oids:registerIfNeeded:usingManagedObjectContext:] :376 (in Photos)
23  Photos                          0x0000000191783c2c -[PHFetchResult initWithQuery:] :100 (in Photos)
24  Photos                          0x0000000191763b5c -[PHQuery executeQuery] :52 (in Photos)
25  Photos                          0x00000001916c2998 ___67+[PHAssetCollection fetchAssetCollectionsWithType:subtype:options:]_block_invoke :72 (in Photos)
26  Photos                          0x000000019175fe48 +[PHObject authorizationAwareFetchResultWithOptions:fetchBlock:] :88 (in Photos)
27  Photos                          0x00000001916c2944 +[PHAssetCollection fetchAssetCollectionsWithType:subtype:options:] :84 (in Photos)

Typically on 32-bit devices, such as iPhone5, iPhone4S, a crash report looks like this:

Exception Type:  SIGABRT
Exception Codes: #0 at 0x1b448ad4
Crashed Thread:  1
Application Specific Information:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException'  reason: 'CoreData: Cannot load NSManagedObjectModel.  nil is an illegal URL parameter'
Last Exception Backtrace:
0   CoreFoundation                  0x1bca0df7 ___exceptionPreprocess :131 (in CoreFoundation)
1   libobjc.A.dylib                 0x1af03077 _objc_exception_throw :39 (in libobjc.A.dylib)
2   CoreData                        0x1dc190c5 +[NSManagedObjectContext initialize] :1 (in CoreData)
3   PhotoLibraryServices            0x256a45d5 ___44+[PLManagedObjectContext managedObjectModel]_block_invoke :89 (in PhotoLibraryServices)
4   AssetsLibraryServices           0x24fc527d ___pl_dispatch_once_block_invoke :19 (in AssetsLibraryServices)
5   libdispatch.dylib               0x1b346083 __dispatch_client_callout :23 (in libdispatch.dylib)
6   libdispatch.dylib               0x1b346c65 _dispatch_once_f :43 (in libdispatch.dylib)
7   AssetsLibraryServices           0x24fc5267 _pl_dispatch_once :77 (in AssetsLibraryServices)
8   PhotoLibraryServices            0x256a456d +[PLManagedObjectContext managedObjectModel] :73 (in PhotoLibraryServices)
9   Photos                          0x26139475 +[PHQuery _relationshipForFetchType:predicate:] :257 (in Photos)
10  Photos                          0x2613a4cd -[PHQuery collectionFetchType] :85 (in Photos)
11  Photos                          0x261392b1 -[PHQuery copyWithZone:] :303 (in Photos)
12  Photos                          0x26158239 -[PHFetchResult initWithQuery:oids:registerIfNeeded:usingManagedObjectContext:] :125 (in Photos)
13  Photos                          0x26158567 -[PHFetchResult initWithQuery:] :81 (in Photos)
14  Photos                          0x2613c0cb -[PHQuery executeQuery] :53 (in Photos)
15  Photos                          0x260aaf4f ___67+[PHAssetCollection fetchAssetCollectionsWithType:subtype:options:]_block_invoke :73 (in Photos)
16  Photos                          0x2613898d +[PHObject authorizationAwareFetchResultWithOptions:fetchBlock:] :63 (in Photos)
17  Photos                          0x260aaf03 +[PHAssetCollection fetchAssetCollectionsWithType:subtype:options:] :97 (in Photos)

This seems to be a coredata error, I also don't understand why AssetsLibraryServicesand PhotoLibraryServicesexist in the latest crash report. I have tried many ways, but cannot reproduce the crash. Any help is appreciated.

+6
2

, getPhotos, , smartAlbums . , , , .

, ( ), , . :

1) NSPhotoLibraryUsageDescription plist

2) AppDelegate.h :

#import <Photos/Photos.h>

typedef void (^MyCallBack)(NSArray *photos);

3) didFinishLaunchingWithOptions AppDelegate.m :

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    dispatch_semaphore_t sema = dispatch_semaphore_create(0);

    [PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {

        if (status == PHAuthorizationStatusAuthorized) {
            dispatch_async(dispatch_get_global_queue(0, 0), ^{
                [self getPhotos:^(NSArray *photos) {
                    dispatch_semaphore_signal(sema);
                }];
            });
        }
    }];

    dispatch_time_t timeout = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(10 * NSEC_PER_SEC));

    dispatch_semaphore_wait(sema, timeout);

    return YES;
}

- (void)getPhotos:(MyCallBack)callback {

    Class PHPhotoLibrary_class = NSClassFromString(@"PHPhotoLibrary");

    if (PHPhotoLibrary_class) {

        PHFetchResult *smartAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeSmartAlbumUserLibrary options:nil];

        NSMutableArray *photos = [[NSMutableArray alloc] init];

        int i = 0;
        for (PHAssetCollection *assetCollection in smartAlbums)
        {
            i++;

            PHFetchResult *smartAlbum = [PHAsset fetchAssetsInAssetCollection:assetCollection options:nil];

            int j = 0;
            for (PHAsset *asset in smartAlbum)
            {
                j++;

                [[PHImageManager defaultManager]
                 requestImageDataForAsset:asset
                 options:nil
                 resultHandler:^void(NSData * _Nullable imageData, NSString * _Nullable dataUTI, UIImageOrientation orientation, NSDictionary * _Nullable info) {

                     [photos addObject:[UIImage imageWithData:imageData]];
                     if (i == [smartAlbums count] && j == [smartAlbum count]) {
                         callback([NSArray arrayWithArray:photos]);
                     }
                 }];

                if (i == [smartAlbums count] && j == [smartAlbum count]) {
                    return;
                }
            }
        }
    }
}
+3

, getPhotos fetchAssetCollectionsWithType . .

0

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