Question

我正在试用Apportable的完整版本，但无法成功添加持久性商店。我通过以下代码添加持久存储：

NSURL *storeURL = [NSURL fileURLWithPath:self.pathToStoreFile];
NSError *error = nil;
_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:_managedObjectModel];
// Allow inferred migration from the original version of the application.
NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys:
                         [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption,
                         [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil];

if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:options error:&error]) {
    if (self.delegate != nil && [self.delegate respondsToSelector:@selector(managedObjectStore:didFailToCreatePersistentStoreCoordinatorWithError:)]) {
        [self.delegate managedObjectStore:self didFailToCreatePersistentStoreCoordinatorWithError:error];
    } else {
        NSAssert(NO, @"Managed object store failed to create persistent store coordinator: %@", error);
    }
}

此调用返回false（失败）。

[_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:options error:&error]

在此调用之前打印出变量：

选项：

{NSInferMappingModelAutomaticallyOption = 1; NSMigratePersistentStoresAutomaticallyOption = 1; }

print-object storeURL

file://localhost/data/data/au.com.afgonline.flexcontacts/files/Documents/contacts.sqlite

我已将write_external_storage和write_settings添加到configuration.json中的功能

与How to use CoreData in Apportable?

在Apportable中添加持久存储

1 个答案: