我相信我正在跳过一个重要的步骤或者说我的财产是错误的。在我的应用程序中，在使用登录信息创建POST对象后，我无法使用映射对象中的此信息（这意味着我得到空值）。我假设在创建post请求和响应请求之后，我应该可以使用我的NSObjectClass中保存的值。
我的问题
如何在发布请求映射后保存值？如果有人可以提供一个如何使用response.body值的示例，那将非常有用。谢谢。
我的课程
#import <Foundation/Foundation.h>
@interface AccountsClass : NSObject
@property (nonatomic, strong) NSString *DeviceType;
@property (nonatomic,strong) NSString *HardwareId;
@property (nonatomic,strong) NSString *NickName;
@property (nonatomic,strong) NSNumber *HelpCreditsBalance;
@property (nonatomic,assign) BOOL GotRatingCreditBonus;
@property (nonatomic,strong) NSNumber *AccountId;
@end
这是我用于POST请求的方法
-(void)loadPostRequest
{
_StoreIdentifierForVendor = [[[UIDevice currentDevice]identifierForVendor]UUIDString];
_StoreTheModel = [UIDevice currentDevice].model;
_nickname = usernameTextField.text;
AccountsClass *AccountInfo = [[AccountsClass alloc] init];
AccountInfo.NickName = _nickname;
AccountInfo.HardwareId =_StoreIdentifierForVendor;
AccountInfo.DeviceType =_StoreTheModel;
AccountInfo.AccountId =nil;
AccountInfo.GotRatingCreditBonus = FALSE;
AccountInfo.HelpCreditsBalance = nil;
//this is where the POST request begins
RKObjectMapping *responseMapping = [RKObjectMapping mappingForClass:[AccountsClass class]];
[responseMapping addAttributeMappingsFromArray:@[@"NickName", @"HardwareId", @"DeviceType",@"AccountId"]];
NSIndexSet *statusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful); // Anything in 2xx
RKResponseDescriptor *AccountDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:responseMapping method:RKRequestMethodAny pathPattern:nil keyPath:nil statusCodes:statusCodes];
RKObjectMapping *requestMapping = [RKObjectMapping requestMapping]; // objectClass == NSMutableDictionary
[requestMapping addAttributeMappingsFromArray:@[@"NickName", @"HardwareId", @"DeviceType",@"AccountId"]];
// For any object of class Article, serialize into an NSMutableDictionary using the given mapping and nest
// under the 'article' key path
RKRequestDescriptor *requestDescriptor = [RKRequestDescriptor requestDescriptorWithMapping:requestMapping objectClass:[AccountInfo class] rootKeyPath:nil method:RKRequestMethodAny];
RKObjectManager *manager = [RKObjectManager managerWithBaseURL:[NSURL URLWithString:@"http://10.15.1.105:XXXX"]];
[manager addRequestDescriptor:requestDescriptor];
[manager addResponseDescriptor:AccountDescriptor];
[manager postObject:AccountInfo path:@"/Accounts" parameters:nil success: ^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
RKLogInfo(@"Load collection of Articles: %@", mappingResult.array);
[self performSegueWithIdentifier:@"SegueFromLoginToWelcomeView" sender:self];
NSLog(@"the firs tobject %@",[mappingResult firstObject]);
} failure:^(RKObjectRequestOperation *operation, NSError *error) {
RKLogError(@"Operation failed with error: %@", error);
}];
RKLogConfigureByName("*", RKLogLevelTrace); // set all logs to trace,
}
在我的下一个视图控制器中，这就是我试图获取值的方式。
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
AccountsClass *PrintloginName = [[AccountsClass alloc]init];
welcomeLabel.text =[PrintloginName NickName];
NSLog(@"visibility test %@",welcomeLabel.text);
}
控制台日志
2013-11-09 15:44:41.066 GuessTheImage[4913:70b] I restkit:RKLog.m:33 RestKit logging initialized...
2013-11-09 15:44:46.859 GuessTheImage[4913:70b] LoginViewController - Submit Action
2013-11-09 15:44:46.868 GuessTheImage[4913:70b] T restkit.network:RKObjectRequestOperation.m:148 POST 'http://10.15.1.105.XXXX/Accounts':
request.headers={
Accept = "application/json";
"Accept-Language" = "en;q=1, fr;q=0.9, de;q=0.8, zh-Hans;q=0.7, zh-Hant;q=0.6, ja;q=0.5";
"Content-Type" = "application/x-www-form-urlencoded; charset=utf-8";
"User-Agent" = "GuessTheImage/1.0 (iPhone Simulator; iOS 7.0.3; Scale/2.00)";
}
request.body=DeviceType=iPhone%20Simulator&HardwareId=0F9B444B-FA08-4422-B154-B8F6861D41FB&NickName=skrillex2
2013-11-09 15:44:47.410 GuessTheImage[4913:f03] D restkit.object_mapping:RKMapperOperation.m:378 Executing mapping operation for representation: {
AccountId = 1128;
DeviceType = "iPhone Simulator";
GotRatingCreditBonus = 0;
HardwareId = "0F9B444B-FA08-4422-B154-B8F6861D41FB";
HelpCreditsBalance = 50;
NickName = skrillex2;
}
and targetObject: <AccountsClass: 0x8b9aa00>
2013-11-09 15:44:47.412 GuessTheImage[4913:f03] T restkit.object_mapping:RKMapperOperation.m:321 Examining keyPath '<null>' for mappable content...
2013-11-09 15:44:47.413 GuessTheImage[4913:f03] D restkit.object_mapping:RKMapperOperation.m:301 Found mappable data at keyPath '<null>': {
AccountId = 1128;
DeviceType = "iPhone Simulator";
GotRatingCreditBonus = 0;
HardwareId = "0F9B444B-FA08-4422-B154-B8F6861D41FB";
HelpCreditsBalance = 50;
NickName = skrillex2;
}
2013-11-09 15:44:47.414 GuessTheImage[4913:f03] D restkit.object_mapping:RKMapperOperation.m:230 Asked to map source object {
AccountId = 1128;
DeviceType = "iPhone Simulator";
GotRatingCreditBonus = 0;
HardwareId = "0F9B444B-FA08-4422-B154-B8F6861D41FB";
HelpCreditsBalance = 50;
NickName = skrillex2;
} with mapping <RKObjectMapping:0x8b94680 objectClass=AccountsClass propertyMappings=(
"<RKAttributeMapping: 0x8b8b210 NickName => NickName>",
"<RKAttributeMapping: 0x8b8b230 HardwareId => HardwareId>",
"<RKAttributeMapping: 0x8b9cf20 DeviceType => DeviceType>",
"<RKAttributeMapping: 0x8b9cf40 AccountId => AccountId>"
)>
2013-11-09 15:44:47.415 GuessTheImage[4913:f03] D restkit.object_mapping:RKMappingOperation.m:851 Starting mapping operation...
2013-11-09 15:44:47.415 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:852 Performing mapping operation: <RKMappingOperation 0x8cad4c0> for 'AccountsClass' object. Mapping values from object {
AccountId = 1128;
DeviceType = "iPhone Simulator";
GotRatingCreditBonus = 0;
HardwareId = "0F9D844B-FA08-4422-B254-B8F6861F41FB";
HelpCreditsBalance = 50;
NickName = skrillex2;
} to object <AccountsClass: 0x8b9aa00> with object mapping (null)
2013-11-09 15:44:47.416 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:440 Mapping attribute value keyPath 'NickName' to 'NickName'
2013-11-09 15:44:47.416 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:429 Found transformable value at keyPath 'NickName'. Transforming from class '__NSCFString' to 'NSString'
2013-11-09 15:44:47.417 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:475 Skipped mapping of attribute value from keyPath 'NickName to keyPath 'NickName' -- value is unchanged (skrillex2)
2013-11-09 15:44:47.417 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:440 Mapping attribute value keyPath 'HardwareId' to 'HardwareId'
2013-11-09 15:44:47.417 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:429 Found transformable value at keyPath 'HardwareId'. Transforming from class '__NSCFString' to 'NSString'
2013-11-09 15:44:47.418 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:475 Skipped mapping of attribute value from keyPath 'HardwareId to keyPath 'HardwareId' -- value is unchanged (0F9D844B-FA08-4422-B254-B8F6861F41FB)
2013-11-09 15:44:47.418 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:440 Mapping attribute value keyPath 'DeviceType' to 'DeviceType'
2013-11-09 15:44:47.420 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:429 Found transformable value at keyPath 'DeviceType'. Transforming from class '__NSCFString' to 'NSString'
2013-11-09 15:44:47.420 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:475 Skipped mapping of attribute value from keyPath 'DeviceType to keyPath 'DeviceType' -- value is unchanged (iPhone Simulator)
2013-11-09 15:44:47.421 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:440 Mapping attribute value keyPath 'AccountId' to 'AccountId'
2013-11-09 15:44:47.421 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:429 Found transformable value at keyPath 'AccountId'. Transforming from class '__NSCFNumber' to 'NSNumber'
2013-11-09 15:44:47.421 GuessTheImage[4913:f03] T restkit.object_mapping:RKMappingOperation.m:460 Mapped attribute value from keyPath 'AccountId' to 'AccountId'. Value: 1128
2013-11-09 15:44:47.421 GuessTheImage[4913:f03] D restkit.object_mapping:RKMappingOperation.m:920 Finished mapping operation successfully...
2013-11-09 15:44:47.422 GuessTheImage[4913:f03] D restkit.object_mapping:RKMapperOperation.m:404 Finished performing object mapping. Results: {
"<null>" = "<AccountsClass: 0x8b9aa00>";
}
2013-11-09 15:44:47.425 GuessTheImage[4913:4f0f] T restkit.network:RKObjectRequestOperation.m:218 POST 'http://10.15.1.105:XXXX/Accounts' (201 Created / 1 objects) [request=0.5414s mapping=0.0155s total=0.5654s]:
response.headers={
"Cache-Control" = "no-cache";
"Content-Length" = 178;
"Content-Type" = "application/json; charset=utf-8";
Date = "Sat, 09 Nov 2013 23:44:41 GMT";
Expires = "-1";
Pragma = "no-cache";
Server = "Microsoft-IIS/8.0";
"Set-Cookie" = "ARRAffinity=c390b30098dd5ae543210f9431ef79195d0285397a590e0175ce17a5951ea041;Path=/;Domain=e.azurewebsites.net, WAWebSiteSID=af7b9190880945d5938dd9725eecb045; Path=/; HttpOnly";
"X-AspNet-Version" = "4.0.30319";
"X-Powered-By" = "ASP.NET";
}
response.body={"DeviceType":"iPhone Simulator","HardwareId":"0F9D844B-FA08-4422-B254-B8F6861F41FB","NickName":"skrillex2","HelpCreditsBalance":50,"GotRatingCreditBonus":false,"AccountId":1128}
2013-11-09 15:44:47.425 GuessTheImage[4913:70b] I app:LoginViewController.m:107 Load collection of Articles: (
"<AccountsClass: 0x8b9aa00>"
)
2013-11-09 15:44:47.430 GuessTheImage[4913:70b] the firs tobject <AccountsClass: 0x8b9aa00>
2013-11-09 15:44:47.440 GuessTheImage[4913:70b] visibility test (null)
答案 0 :(得分：3)
当你这样做时：
AccountsClass *PrintloginName = [[AccountsClass alloc]init];
您创建一个与任何映射实例无关的全新帐户类实例。
您应该拦截segue（通过在触发segue的视图控制器上实现prepareForSegue:sender:）来获取目标视图控制器，然后将映射对象（从mappingResult）传递给它。 / p>