如何繼<a href="https://github.com/RestKit/RestKit/wiki/Object-mapping" rel="nofollow">RestKit documentation here</a>成功後RestKit映射

Question

後訪問對象我現在已經成功的對象映射。嗬！我現在的問題是如何在我的項目中訪問這個對象？我用RestKit映射一個JSON響應於APIUser對象。在下一屏幕上，例如，我想從APIUser對象獲取用戶的名字打招呼。我如何訪問該對象？

我是新來的Objective-C，所以這可能是更多的是關於使用全局對象，單班，以及跨在Objective-C類持續數據的問題，也包含RestKit框架。

這裏是我的restkit對象映射日誌，以防引用它。謝謝。任何幫助表示讚賞。

2012-07-30 14:54:04.813 TestApp[2361:1a707] D restkit.object_mapping:RKObjectMapper.m:240 Performing object mapping sourceObject: { 
    apiUser =  { 
     active = 1; 
     apiUserIdx = 101; 
     birthdate = "1980-06-21T00:00:00-06:00"; 
     countryCode = US; 
     firstName = "test_user1_firstname"; 
     lastName = "test_user1_lastname"; 
     ssn = 1111; 
     userName = "test_user1"; 
     verified = 1; 
    }; 
} 
and targetObject: (null) 
2012-07-30 14:54:04.813 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMapper.m:254 Examining keyPath 'errors' for mappable content... 
2012-07-30 14:54:04.813 TestApp[2361:1a707] D restkit.object_mapping:RKObjectMapper.m:264 Found unmappable value at keyPath: errors 
2012-07-30 14:54:04.814 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMapper.m:254 Examining keyPath 'apiUser' for mappable content... 
2012-07-30 14:54:04.814 TestApp[2361:1a707] D restkit.object_mapping:RKObjectMapper.m:283 Found mappable data at keyPath 'apiUser': { 
    active = 1; 
    apiUserIdx = 101; 
    birthdate = "1980-06-21T00:00:00-06:00"; 
    countryCode = US; 
    firstName = "test_user1_firstname"; 
    lastName = "test_user1_lastname"; 
    ssn = 1111; 
    userName = "test_user1"; 
    verified = 1; 
} 
2012-07-30 14:54:04.814 TestApp[2361:1a707] D restkit.object_mapping:RKObjectMapper.m:189 Asked to map source object { 
    active = 1; 
    apiUserIdx = 101; 
    birthdate = "1980-06-21T00:00:00-06:00"; 
    countryCode = US; 
    firstName = "test_user1_firstname"; 
    lastName = "test_user1_lastname"; 
    ssn = 1111; 
    userName = "test_user1"; 
    verified = 1; 
} with mapping RKObjectMapping class => APIUser: keyPath mappings => (
    "RKObjectKeyPathMapping: lastName => lastName", 
    "RKObjectKeyPathMapping: birthdate => birthdate", 
    "RKObjectKeyPathMapping: countryCode => countryCode", 
    "RKObjectKeyPathMapping: firstName => firstName", 
    "RKObjectKeyPathMapping: password => password", 
    "RKObjectKeyPathMapping: apiUserIdx => apiUserIdx", 
    "RKObjectKeyPathMapping: active => active", 
    "RKObjectKeyPathMapping: userName => userName", 
    "RKObjectKeyPathMapping: verified => verified" 
) 
2012-07-30 14:54:04.815 TestApp[2361:1a707] D restkit.object_mapping:RKObjectMappingOperation.m:428 Starting mapping operation... 
2012-07-30 14:54:04.816 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:242 Mapping attribute value keyPath 'lastName' to 'lastName' 
2012-07-30 14:54:04.816 TestApp[2361:1a707] D restkit.object_mapping:RKObjectPropertyInspector.m:95 Cached property names and types for Class 'APIUser': { 
    accessibilityHint = NSString; 
    accessibilityLabel = NSString; 
    accessibilityLanguage = NSString; 
    accessibilityValue = NSString; 
    birthdate = NSDate; 
    countryCode = NSString; 
    firstName = NSString; 
    lastName = NSString; 
    password = NSString; 
    userName = NSString; 
} 
2012-07-30 14:54:04.818 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:252 Mapped attribute value from keyPath 'lastName' to 'lastName'. Value: test_user1_lastname 
2012-07-30 14:54:04.818 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:242 Mapping attribute value keyPath 'birthdate' to 'birthdate' 
2012-07-30 14:54:04.818 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:115 Found transformable value at keyPath 'birthdate'. Transforming from type '__NSCFString' to 'NSDate' 
2012-07-30 14:54:04.818 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:97 Transforming string value '1980-06-21T00:00:00-06:00' to NSDate... 
2012-07-30 14:54:04.819 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:259 Skipped mapping of attribute value from keyPath 'birthdate to keyPath 'birthdate' -- value is unchanged ((null)) 
2012-07-30 14:54:04.821 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:242 Mapping attribute value keyPath 'countryCode' to 'countryCode' 
2012-07-30 14:54:04.822 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:252 Mapped attribute value from keyPath 'countryCode' to 'countryCode'. Value: US 
2012-07-30 14:54:04.822 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:242 Mapping attribute value keyPath 'firstName' to 'firstName' 
2012-07-30 14:54:04.822 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:252 Mapped attribute value from keyPath 'firstName' to 'firstName'. Value: test_user1_firstname 
2012-07-30 14:54:04.822 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:291 Did not find mappable attribute value keyPath 'password' 
2012-07-30 14:54:04.823 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:242 Mapping attribute value keyPath 'apiUserIdx' to 'apiUserIdx' 
2012-07-30 14:54:04.839 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:252 Mapped attribute value from keyPath 'apiUserIdx' to 'apiUserIdx'. Value: 101 
2012-07-30 14:54:04.840 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:242 Mapping attribute value keyPath 'active' to 'active' 
2012-07-30 14:54:04.840 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:252 Mapped attribute value from keyPath 'active' to 'active'. Value: 1 
2012-07-30 14:54:04.840 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:242 Mapping attribute value keyPath 'userName' to 'userName' 
2012-07-30 14:54:04.840 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:252 Mapped attribute value from keyPath 'userName' to 'userName'. Value: test_user1 
2012-07-30 14:54:04.841 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:242 Mapping attribute value keyPath 'verified' to 'verified' 
2012-07-30 14:54:04.845 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMappingOperation.m:252 Mapped attribute value from keyPath 'verified' to 'verified'. Value: 1 
2012-07-30 14:54:04.845 TestApp[2361:1a707] D restkit.object_mapping:RKObjectMappingOperation.m:434 Finished mapping operation successfully... 
2012-07-30 14:54:04.846 TestApp[2361:1a707] T restkit.object_mapping:RKObjectMapper.m:254 Examining keyPath 'error' for mappable content... 
2012-07-30 14:54:04.846 TestApp[2361:1a707] D restkit.object_mapping:RKObjectMapper.m:264 Found unmappable value at keyPath: error 
2012-07-30 14:54:04.846 TestApp[2361:1a707] D restkit.object_mapping:RKObjectMapper.m:304 Finished performing object mapping. Results: { 
    apiUser = "<APIUser: 0xcd8b170>"; 
} 

Answer 1

我想我想通了。我需要創建一個APIUser的新實例並將其設置爲等於[objects objectAtIndex:0].如：

- (void)objectLoader:(RKObjectLoader*)objectLoader didLoadObjects:(NSArray*)objects { 

    NSLog(@"There are %i objects.", objects.count); 

    APIUser *apiUser = [objects objectAtIndex:0]; 
    NSLog(@"Loaded apiUserIdx #%i -> First name: %@, Last name: %@", apiUser.apiUserIdx, apiUser.firstName, apiUser.lastName); 

}