iphone - UITableviewCellでJsonデータを表示する方法

Question

と現在取り組んでいJSONます。私はちょうど使用してjsp webserverいます。JSONデータを使用して表示したいのですが、uitableviewcellいくつかのプログラムを試しましたが、エラーが発生しました。

これが私のJSONです。

[{"result":[{"request_id":508,"ticket_number":"PA_1000508","email":"harI","user_id":6,"description":"Feed","createdTime":"10/15/2013 10:52:32 AM","status":"initiated"},{"request_id":507,"ticket_number":"PA_1000507","email":"hari","user_id":6,"description":"","createdTime":"10/15/2013 10:52:16 AM","status":"initiated"},{"request_id":505,"ticket_number":"PA_1000505","email":"hari","user_id":6,"description":"test","createdTime":"10/15/2013 10:42:26 AM","status":"initiated"},{"request_id":504,"ticket_number":"PA_1000504","email":"hari","user_id":6,"description":"desccccccccccccccccccc","createdTime":"10/15/2013 10:42:06 AM","status":"initiated"},

自分のデータを表示したいuitableviewcell

これが私のサンプルコードです。

TotalRequest.h

@interface TotalRequests : UIViewController<UITableViewDataSource,UITableViewDelegate>
{
    NSMutableData *data;
    NSArray *listItems;
    NSURLConnection *connection;
    NSString *stat;
    IBOutlet UITableView *tableview;
}

TotalRequest.m

- (void)viewDidLoad
{

    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    self.title=@"Total Requests";
    NSURL *url=[NSURL URLWithString:@"http:sampleurl"];
    NSURLRequest *request=[NSURLRequest requestWithURL:url];
    connection=[[NSURLConnection alloc]initWithRequest:request delegate:self];
    if(connection)    
    {
        data=[[NSMutableData alloc]init];
    }
    data=[[NSMutableData alloc]init];
    [self performSelectorOnMainThread:@selector(fetchData) 
    withObject:data waitUntilDone:YES];
}

-(void)fetchData:(NSData *)responseData
{
    NSError *error=nil;
    NSDictionary *json=[NSJSONSerialization JSONObjectWithData:responseData 
    options:kNilOptions error:&error];
    NSDictionary *tRequest=[json objectForKey:@"userId"];
    NSLog(@"Total Requests :%@",tRequest);
    if(!tRequest)
    {
        NSLog(@"Error In Json :%@",error);
    }
    else
    for(NSDictionary *newValue in tRequest)
    {
        NSString *tNumber=[newValue objectForKey:@"ticket_number"];
        NSString *time=[newValue objectForKey:@"createdTime"];
        stat=[newValue objectForKey:@"status"];
        NSLog(@"ticket_number :%@",tNumber);
        NSLog(@"createdTime :%@",time);
        NSLog(@"status :%@",stat);
    }
}


- (UITableViewCell *)tableView:(UITableView *)tableView 
cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{
    static NSString *cellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
    if (cell == nil) 
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
    }
    cell.textLabel.text=[[listItems objectAtIndex:indexPath.row]objectForKey:@"ticket_number"];
    cell.textLabel.text=[[listItems objectAtIndex:indexPath.row]objectForKey:@"createdTime"];
    cell.textLabel.text=[[listItems objectAtIndex:indexPath.row]objectForKey:@"status"];
    return cell;
}


-(void)connection :(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    data=[[NSMutableData alloc]init];
}


-(void)connection : (NSURLConnection *)connection didReceiveData:(NSData *)theData
{
    [data appendData:theData];
}

-(void)connection :(NSURLConnection *)connection didFailWithError:(NSError *)error

{
    NSLog(@"Error in Connection");
}

エラーメッセージは次のとおりです。

-[TotalRequests fetchData]: unrecognized selector sent to instance 0x7162820 15:02:36.685 sampleWebservices[2897:11303]Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[TotalRequests fetchData]: unrecognized selector sent to instance 0x7162820' *** First throw call stack: (0x1c99012 0x10d6e7e 0x1d244bd 0x1c88bbc 0x1c8894e 0xb15fb4 0xb15e67 0x3d45 0xfc1c7 0xfc232 0xfc4da 0x1138e5 0x1139cb 0x113c76 0x113d71 0x11489b 0x114e93 0x114a88 0x3607 0xca285 0xca4ed 0xad45b3 0x1c58376 0x1c57e06 0x1c3fa82 0x1c3ef44 0x1c3ee1b 0x1bf37e3 0x1bf3668 0x1affc 0x28bd 0x27e5)