获取Restkit教程代码工作

我在iOS上开发相对较新，并试图熟悉RestKit，所以如果我错过了一些明显的东西，请耐心等待。

我们正在开发一个iOS 5应用程序，它将接收JSON并将其映射到对象（如果重要，则启用ARC）。 为了寻找Restkit的教程，我遇到了这个 。 但是，示例代码的简化版本（“RKClient实际示例”一节中的示例代码）失败，并显示以下错误：

2012-01-14 22:15:55.124 Test_StaticLibInApp[789:707] *** Assertion failure in -[RKRequestQueue removeRequest:decrementCounter:], /Users/m/Documents/devel/ios/RestKit/Code/Network/RKRequestQueue.m:350 2012-01-14 22:15:55.129 Test_StaticLibInApp[789:707] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Attempted to decrement loading count below zero' 

确切地说，这是我尝试过的代码：

 - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. RKClient *client = [RKClient clientWithBaseURL:@"some_url"]; RKLogConfigureByName("RestKit/Network", RKLogLevelTrace); NSDictionary *queryParameters = [NSDictionary dictionaryWithObjectsAndKeys:nil]; NSString *getResourcePath = RKPathAppendQueryParams(@"some_url_segment", queryParameters); RKRequest *request = [client get:getResourcePath delegate:self]; [request sendAsynchronously]; } - (void)request:(RKRequest *)request didLoadResponse:(RKResponse *)response { id jsonParser = [[RKParserRegistry sharedRegistry] parserForMIMEType:RKMIMETypeJSON]; NSError *error = nil; id parsedResponse = [jsonParser objectFromString:[response bodyAsString] error:&error]; if (error == nil) { NSLog(@"GET returned with HTTP Code %d and parsedContent: %@", [response statusCode], parsedResponse); } else { NSLog(@"Error: %@", error); } } - (void)request:(RKRequest *)request didFailLoadWithError:(NSError *)error { NSLog(@"Failure of GET with error %@.", error); } 

这是跟踪输出：

 2012-01-14 22:15:54.746 Test_StaticLibInApp[789:707] I restkit:RKLog.m:30 RestKit initialized... 2012-01-14 22:15:54.765 Test_StaticLibInApp[789:707] D restkit.network:RKRequest.m:365 Sending asynchronous GET request to URL <url>. 2012-01-14 22:15:54.771 Test_StaticLibInApp[789:707] T restkit.network:RKRequest.m:313 Prepared GET URLRequest '<NSMutableURLRequest url>'. HTTP Headers: { "Content-Length" = 0; }. HTTP Body: . 2012-01-14 22:15:54.852 Test_StaticLibInApp[789:707] I restkit.network.reachability:RKReachabilityObserver.m:369 Network availability has been determined for reachability observer <RKReachabilityObserver: 0x15c920 host=<server ip> isReachabilityDetermined=YES isMonitoringLocalWiFi=448340 reachabilityFlags=-R ------d> 2012-01-14 22:15:54.857 Test_StaticLibInApp[789:707] D restkit.network:RKClient.m:388 Reachability to host '<server ip>' determined for client <RKClient: 0x158740>, unsuspending queue <RKRequestQueue: 0x15b260 name=(null) suspended=YES requestCount=1 loadingCount=0/5> 2012-01-14 22:15:55.037 Test_StaticLibInApp[789:707] D restkit.network:RKResponse.m:189 NSHTTPURLResponse Status Code: 200 2012-01-14 22:15:55.044 Test_StaticLibInApp[789:707] D restkit.network:RKResponse.m:190 Headers: { "Content-Type" = "application/json"; Date = "Sat, 14 Jan 2012 20:16:21 GMT"; Server = "Apache-Coyote/1.1"; "Transfer-Encoding" = Identity; } 2012-01-14 22:15:55.048 Test_StaticLibInApp[789:707] T restkit.network:RKResponse.m:195 Read response body: <json text here> 2012-01-14 22:15:55.059 Test_StaticLibInApp[789:707] I restkit.network:RKRequest.m:565 Status Code: 200 2012-01-14 22:15:55.066 Test_StaticLibInApp[789:707] D restkit.network:RKRequest.m:566 Body: <json text here> 2012-01-14 22:15:55.106 Test_StaticLibInApp[789:707] GET returned with HTTP Code 200 and parsedContent: <json text here> 2012-01-14 22:15:55.124 Test_StaticLibInApp[789:707] *** Assertion failure in -[RKRequestQueue removeRequest:decrementCounter:], /Users/m/Documents/devel/ios/RestKit/Code/Network/RKRequestQueue.m:350 2012-01-14 22:15:55.129 Test_StaticLibInApp[789:707] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Attempted to decrement loading count below zero' *** First throw call stack: (0x33fac8bf 0x341fc1e5 0x33fac7b9 0x3595b3b3 0x1da7f 0x1e7a3 0x3598150f 0x33f78577 0x33f040cf 0x358f53fb 0x1818b 0x2064b 0x359b8c39 0x359106e9 0x359106b3 0x359105d5 0x31fbe8a5 0x31fb3545 0x31fb3243 0x31fb3179 0x33f80b03 0x33f802cf 0x33f7f075 0x33f024dd 0x33f023a5 0x30786fcd 0x37383743 0x2c81 0x2c18) 

这个错误是否与用ARC编译的应用程序相关？ 对于Restkit的安装，我从git master分支得到了这些文件，并按照安装说明进行操作，不改变它的任何设置。

在此先感谢您的帮助。

Answer 1

线

[请求发送asynchronous]

是不需要的。

[client get：getResourcePath delegate：self]

已经发送请求，并递减请求计数。 你越来越

原因：“试图将加载计数递减到零以下”

因为这个。

Answer 2

不应该启用ARC来编译RestKit。 我所做的是编译RestKit模拟器和设备，然后添加结果.a和包括我的ARC启用项目。 另外，你是否添加了-all_load -ObjC到其他链接器标志？ 问候，