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我一直试图让 RestKit 在我的应用程序上工作,但没有成功。我有一个启用 ARC 的应用程序,我使用https://github.com/RestKit/RestKit/wiki/Installing-RestKit-in-Xcode-4.x安装了它。我一直在阅读 StackOverflow 上的文章,说我需要一个单例类或其他东西。我回到基础并尝试按照以下示例进行操作:https ://github.com/RestKit/RestKit/wiki/Tutorial-%3A-Introduction-to-RestKit 。

在我的 AppDelegate 中,我有:

RKClient *client = [RKClient clientWithBaseURLString:@"http://restkit.org"];
   NSLog(@"I am your RKClient singleton: %@", [RKClient sharedClient]);

在我的另一堂课上,我有:

    - (void) sendRequests {
    [[RKClient sharedClient] get: @"/foo.xml" delegate:self];

    NSDictionary *params = [NSDictionary dictionaryWithObject:@"RestKit" forKey:@"Sender"];
    [ [RKClient sharedClient] post:@"/other.json" params:params delegate:self];

    // DELETE a remote resource from the server
    [ [RKClient sharedClient] delete:@"/missing_resource.txt" delegate:self];

}

- (void)request:(RKRequest*)request didLoadResponse:(RKResponse*)response {  
    if ([request isGET]) {
        // Handling GET /foo.xml

        if ([response isOK]) {
            // Success! Let's take a look at the data
            NSLog(@"Retrieved XML: %@", [response bodyAsString]);
        }

    } else if ([request isPOST]) {

        // Handling POST /other.json        
        if ([response isJSON]) {
            NSLog(@"Got a JSON response back from our POST!");
        }

    } else if ([request isDELETE]) {

        // Handling DELETE /missing_resource.txt
        if ([response isNotFound]) {
            NSLog(@"The resource path '%@' was not found.", [request resourcePath]);
        }
    }
}

- (void) requestWillPrepareForSend:(RKRequest *)request {
    NSLog(@"request: %@",request);
}

我收到 EXC_BAD_ACCESS(code -1, address = 0x766c6550) 错误,它指向的行是:

if ([self.delegate respondsToSelector:@selector(requestWillPrepareForSend:)]) {

顺便说一句,我通过执行以下操作调用 getRequest:

RestHandler *myRestHandler = [[RestHandler alloc] init];
[myRestHandler sendRequests];

和 RestHandler 确实有 .

谁能在这里为我提供一些见解?我读了一堆关于 StackOverflow 的文章,但我回到了基础,仍然无法弄清楚。

谢谢!

4

2 回答 2

1

如果您不为请求使用局部变量,则可以使用该代码。将 RestHandler 对象放在 AppDelegate 实例变量上,然后执行以下操作:

@interface RSAppDelegate : NSObject <NSApplicationDelegate,NSOutlineViewDataSource, NSOutlineViewDelegate> {
    RestHandler *myRestHandler;
}

在 applicationDidFinishLaunching 中:

myRestHandler = [[RestHandler alloc] init];
[myRestHandler sendRequests];
于 2012-06-02T18:06:54.237 回答
0

设置myRestHandleras strong 的属性。该对象在 url 请求形成之前失去了内存Restkit

于 2012-08-23T07:32:52.107 回答