我正在为任务列表的生产力应用程序开发TodayExtension,我需要在TodayExtension中的表格中显示一些任务的列表。
设置表格视图时没有任何问题,但是当我尝试设置MagicalRecord和CoreData时,我遇到了崩溃。
我崩溃的方法的源代码是:
- (void)setupCoreDataStackWithStoreNamed:(NSString *)storeNamed
{
if ([NSPersistentStoreCoordinator MR_defaultStoreCoordinator] != nil)
{
return;
}
NSManagedObjectModel *model = [NSManagedObjectModel MR_defaultManagedObjectModel];
NSPersistentStoreCoordinator *psc = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:model];
NSString *containerPath = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:APP_GROUP].path;
NSString *sqlitePath = [NSString stringWithFormat:@"%@/%@", containerPath, storeNamed];
NSURL *storeURL = [NSURL URLWithString:sqlitePath];
[psc MR_addSqliteStoreNamed:storeURL withOptions:nil];
[NSPersistentStoreCoordinator MR_setDefaultStoreCoordinator:psc];
[NSManagedObjectContext MR_initializeDefaultContextWithCoordinator:psc];
}
崩溃的路线是:
[psc MR_addSqliteStoreNamed:storeURL withOptions:nil];
错误消息是:
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'CoreData SQL stores only support file URLs (got /private/var/mobile/Containers/Shared/AppGroup/66A40F3A-9E25-42BD-9BD0-D86BC5A93FBD/myappname_560967e1665e88ab37000000.sqlite).'
我从这篇文章获得灵感How to access CoreData model in today extension (iOS)
答案 0 :(得分:1)
您正在将NSString
网址(/ .. / ...)传递给MR_addSqliteStoreNAamed
,但崩溃告诉您需要传递文件网址(file:// .. 。)
所以你必须改变这个源代码:
NSString *containerPath = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:APP_GROUP].path;
NSString *sqlitePath = [NSString stringWithFormat:@"%@/%@", containerPath, storeNamed];
NSURL *storeURL = [NSURL URLWithString:sqlitePath];
到此:
NSURL *storeURL = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:APP_GROUP];
storeURL = [storeURL URLByAppendingPathComponent:storeNamed];
另一种解决方案可能是:
NSString *pathToYourSqliteFile = @"/your/path/here";
NSURL *storeURL = [NSURL fileURLWithPath: isDirectory:NO];