- (NSPersistentStoreCoordinator *)persistentStoreCoordinator
{
    if (__persistentStoreCoordinator != nil) {
        return __persistentStoreCoordinator;
    }

    NSURL *storeURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"Notes2.sqlite"];

    NSError *error = nil;
    __persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
    if (![__persistentStoreCoordinator addPersistentStoreWithType:NSsqliteStoreType configuration:nil URL:storeURL options:nil error:&error]) {

        NSLog(@"Unresolved error %@,%@",error,[error userInfo]);
        abort();
    }    

    NSString *urlString = [storeURL absoluteString];
    NSDictionary *fileAttributes = [NSDictionary dictionaryWithObject:NSFileProtectionComplete forKey:NSFileProtectionKey];
    if (![[NSFileManager defaultManager] setAttributes:fileAttributes ofItemAtPath:urlString error:&error]) 
    {
        // Handle error
    }


    return __persistentStoreCoordinator;
}

如何测试并知道我的sqlite已打开NSFileProtectionComplete？

我锁定了模拟器,但是当我在Finder中双击文件时,文件仍然可读.