Question

我有两个viewController，都有一个表，应用程序会工作，然后我在第二个viewController中添加了导航栏，让他有机会在第一个viewController中返回。 navigationBar可以工作，但是当我想进入第二个以前完全加载的viewController时，我得到了这个错误。

  Terminating app due to uncaught exception 'NSInvalidArgumentException', 
  reason: '-[ChinaDatabaseTable descrizione]: unrecognized selector sent to 
  instance 0x8670140'

导航栏刚刚添加了吗？

在第一个viewController中：

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

   ChinaDatabaseMenu *currow =[self.mutableArray objectAtIndex:indexPath.row];
  /* The second time it loads this line gives the error, after going in the 
     second viewController and then went back*/

    //.....open the second viewController

   if(UI_USER_INTERFACE_IDIOM()== UIUserInterfaceIdiomPhone){
        ListViewController * list =[[ListViewController alloc]initWithNibName:@"ListViewController~iPhone" bundle:nil];

        list.titoloList = currow.descrizione;
        list.labelTitle.font = [UIFont fontWithName:@"Future" size:15];
        [self.navigationController pushViewController:list animated:YES];
    }else{
        ListViewController * list =[[ListViewController alloc]initWithNibName:@"ListViewController~iPad" bundle:nil];
        list.titoloList = currow.descrizione;
        list.labelTitle.font = [UIFont fontWithName:@"Future" size:30];
        [self.navigationController pushViewController:list animated:YES];

    }

    //.....

  }

Answer 1

问题与导航问题无关，问题与您的第二个视图控制器有关（请指定您使用“ChinaDatabaseTable”的控制器）。现在在SecondView Controller中，您只需注释所有UITableViewCode，并检查数据源和委托必须指向nil。

'NSInvalidArgumentException'，添加navigationBar后发送到实例的无法识别的选择器

1 个答案: