Question

使用以下配置方法设置restKit

private func createCoreDataStack(){
    var managedObjectModel = NSManagedObjectModel.mergedModelFromBundles(nil);
    var managedObjectStore = RKManagedObjectStore(managedObjectModel: managedObjectModel)

    var error: NSError?;
    var success = RKEnsureDirectoryExistsAtPath(RKApplicationDataDirectory(), &error);
    if (success == false) {
       // RKLogError("Failed to create Application Data Directory at path '%@': %@", RKApplicationDataDirectory(), error);
    }

    var path:String! = RKApplicationDataDirectory().stringByAppendingPathComponent("DB.sqlite")
    var options = [NSMigratePersistentStoresAutomaticallyOption: NSNumber(bool: true), NSInferMappingModelAutomaticallyOption: NSNumber(bool: true)]
    var persistentStore = managedObjectStore.addSQLitePersistentStoreAtPath(path, fromSeedDatabaseAtPath: nil, withConfiguration: nil, options: options, error: &error)
    if (persistentStore == nil) {
       // RKLogError("Failed adding persistent store at path '%@': %@", path, error);
    }
    managedObjectStore.createManagedObjectContexts()
    managedObjectStore.managedObjectCache = RKInMemoryManagedObjectCache(managedObjectContext: managedObjectStore.persistentStoreManagedObjectContext)
    var client = AFHTTPClient(baseURL: NSURL(string: "https://www.google.com/api"))
    client.allowsInvalidSSLCertificate = true;
    objectManager = RKObjectManager(HTTPClient: client)

    objectManager.managedObjectStore = managedObjectStore
    managedObjectStore.createPersistentStoreCoordinator()
    RKObjectManager.setSharedManager(objectManager)

    addMapping()
}

还使用addMapping（）方法为我的主实体创建了一个间隙，像这样：

private func addMapping(){
    var mapping = RKEntityMapping(forEntityForName: "EntityName", inManagedObjectStore: objectManager.managedObjectStore)
    mapping.identificationAttributes = ["id"]
mapping.addAttributeMappingsFromDictionary(["id":"id","uid":"uid","name":"name" ...])
//more code goes here

运行代码时，它会在addMapping（）方法（addAttributeMappingFromDictionary）中提供的最后一行崩溃，但异常如下： *由于未捕获的异常'NSInvalidArgumentException'而终止应用程序，原因：'* setObjectForKey：key不能为nil'

这是堆栈跟踪的一部分：

2 CoreFoundation 0x0000000105013af8 - [__ NSDictionaryM setObject：forKey：] + 968 3 FoodBooking 0x00000001020c2279 __50- [RKPropertyInspector propertyInspectionForClass：] _ block_invoke69 + 82 4 libdispatch.dylib 0x0000000106cf4614 _dispatch_client_callout + 8 5 libdispatch.dylib 0x0000000106cda002 _dispatch_barrier_sync_f_invoke + 365 6 AppName 0x00000001020c20b5 - [RKPropertyInspector propertyInspectionForClass：] + 886 7 AppName 0x00000001020c23d5 - [RKPropertyInspector classForPropertyNamed：ofClass：isPrimitive：] + 62 8 AppName 0x0000000102081e5b - [RKEntityMapping classForKeyPath：] + 309

我不知道发生了什么，并且对所有人和任何建议都是开放的

在为核心数据实体创建映射时，RestKit崩溃

0 个答案: