Restkit核心数据映射崩溃应用程序

我将restkit响应映射到核心数据，但它使应用程序崩溃。尽管我无法将核心数据映射到restkit，但我仍然阅读restkit核心数据映射的文档。我想问几个问题。我也尝试过使用restkit RKTwitterCoreData的方式。但它也会使应用程序崩溃。但它造成了这样的混乱。Restkit核心数据映射崩溃应用程序

1）这是必要的，像使用restkit RKTwitterCoreData示例中使用的种子数据库？ 2）我如何直接将响应映射到核心数据类？这是我的代码。

RKManagedObjectStore *objectStore = [[RKManagedObjectStore alloc] initWithManagedObjectModel: [NSManagedObjectModel mergedModelFromBundles:nil]]; 

[objectStore addSQLitePersistentStoreAtPath: [RKApplicationDataDirectory() stringByAppendingPathComponent:@"CoffeeShop.sqlite"] fromSeedDatabaseAtPath:nil withConfiguration:nil options:nil error:nil]; 
[objectStore createManagedObjectContexts]; 

RKObjectManager* objectManager = [RKObjectManager managerWithBaseURL:[NSURL URLWithString:@"https://api.foursquare.com/v2"]]; 
[objectManager setManagedObjectStore:objectStore]; 


RKEntityMapping* venueMapping = [RKEntityMapping mappingForEntityForName:@"Venue" inManagedObjectStore:objectStore]; 

[venueMapping addAttributeMappingsFromDictionary:@{ 
@"name" : @"name", 
@"categories":@"prefix"}]; 

[email protected][@"name"]; 

RKResponseDescriptor * responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:venueMapping 
pathPattern:nil 
keyPath:@"response.venues" 
statusCodes:RKStatusCodeIndexSetForClass(RKStatusCodeClassSuccessful)]; 
[objectManager addResponseDescriptor:responseDescriptor];

这是要求和回收数据。

RKObjectManager *objectManager=[RKObjectManager sharedManager]; 
    NSString *latLon = @"23.0280,72.5577"; 
    NSString *clientID = [NSString stringWithUTF8String:kCLIENTID]; 
    NSString *clientSecret = [NSString stringWithUTF8String:kCLIENTSECRET]; 
    NSDictionary *queryParams; 
    queryParams = [NSDictionary dictionaryWithObjectsAndKeys:latLon, @"ll", clientID, @"client_id", clientSecret, @"client_secret", @"coffee", @"query", @"20120602", @"v", nil]; 

[objectManager getObjectsAtPath:@"venues/search" parameters:queryParams success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) 
{ 
    NSLog(@"It Worked: %@",mappingResult.array); 
    data=[[NSMutableArray alloc] initWithArray:mappingResult.array]; 
    NSLog(@"Data Counr%d",[data count]); 
    // Or if you're only expecting a single object: 
    // NSLog(@"It Worked: %@", [mappingResult firstObject]); 
    //[self.tableView reloadData]; 

}failure:^(RKObjectRequestOperation *operation, NSError *error) { 
    NSLog(@"It Failed: %@", error); 
}];

而这一崩溃日志

2013-02-05 11:52:19.209 CoffeeShop[2715:11603] I restkit.network:RKHTTPRequestOperation.m:152 GET 'https://api.foursquare.com/v2/venues/search?client_id=U0JM2MAO3202LHDEGSJXOBNJODNWOFK2DS2F0IFDFJYQ2QAT&client_secret=5RNBGWHFWZRXSD4RCESRTIXR22KQSY2IEITAJ52NR1GMUP4F&ll=23.0280,72.5577&query=coffee&v=20120602' 
2013-02-05 11:52:20.863 CoffeeShop[2715:11603] I restkit.network:RKHTTPRequestOperation.m:179 GET 'https://api.foursquare.com/v2/venues/search?client_id=U0JM2MAO3202LHDEGSJXOBNJODNWOFK2DS2F0IFDFJYQ2QAT&client_secret=5RNBGWHFWZRXSD4RCESRTIXR22KQSY2IEITAJ52NR1GMUP4F&ll=23.0280,72.5577&query=coffee&v=20120602' (200 OK) [1.6540 s] 
2013-02-05 11:52:20.880 CoffeeShop[2715:12b03] -[__NSCFArray length]: unrecognized selector sent to instance 0xaa2fd90 
2013-02-05 11:52:20.881 CoffeeShop[2715:12b03] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFArray length]: unrecognized selector sent to instance 0xaa2fd90' 
*** First throw call stack:(0x1dd1012 0x1bf6e7e 0x1e5c4bd 0x1dc0bbc 0x1dc094e 0x1c6196 0x1c54a2 0x2504d8 0x16a2fe3 0x23af3 0x23fdf 0x251d9 0x2645a 0x2cbff 0x162fd23 0x162fa34 0x17b7a 0x17462 0x1879d 0x19183 0x19a05 0x162fd23 0x162fa34 0x8310e 0x1e4d3f 0x250b014 0x24fad5f 0x24faaa3 0x1e4cba 0x81c91 0x7fc5f 0x162fd23 0x162fa34 0x16bc301 0x24f953f 0x250b014 0x24fc2e8 0x24fbfcb 0x9814fb24 0x981516fe) 
libc++abi.dylib: terminate called throwing an exception

在此先感谢。

来源

2013-02-05 Rajesh

用RK看过很多次。您为第三方框架支付的价格。你可以用'NSHTTPRequest'，'NSJSONSerialization'和Core Data来做到这一点，而不需要太多的代码。 – Mundi

所以你建议我停止使用restkit并且必须选择另一种方式。 – Rajesh

我在暗示，是的。但是，也许你可以在小型社区的帮助下为你的问题找到一个解决方案，该社区也使用RestKit。 – Mundi

您无法识别的选择器错误很可能掩盖了本来会成为僵尸的EXC_BAD_ACCESS。我敢打赌，根本原因是一样的东西在这个问题发生：

RestKit Core Data NSError dealloc Crash

，你可以看到我就如何解决这个问题的答案。

来源

2014-07-15 23:07:19

Restkit核心数据映射崩溃应用程序

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