iphone - 在 uiviewcontroller 中添加 uitableviewcontroller 作为 subview 时出错

Question

我正在做一个简单的应用程序，用于查看来自 json 服务器的项目

我在一个 UIViewController 中使用 UISegment 来添加不同的 subview

    - (IBAction)segmentSwitch:(id)sender {
    UISegmentedControl *segmentedControl = (UISegmentedControl *) sender;
    NSInteger selectedSegment = segmentedControl.selectedSegmentIndex;

    if (selectedSegment == 0) {
        instantiateViewControllerWithIdentifier:@"prestige"] animated:NO];

        UIViewController *subController = [self.storyboard instantiateViewControllerWithIdentifier:@"prestige"];
        [mainView addSubview:subController.view];

    }
    else if(selectedSegment == 1)
    {
        instantiateViewControllerWithIdentifier:@"latest"]];
        //[self setView: [self.storyboard instantiateViewControllerWithIdentifier:@"latest"]];
        //UIViewController *subController = [self.storyboard instantiateViewControllerWithIdentifier:@"latest"];
        //[mainView addSubview:subController.view];

        UITableViewController *tableVC =[self.storyboard instantiateViewControllerWithIdentifier:@"latest"];

        [self.view addSubview:tableVC.tableView];

    }
    else if (selectedSegment == 2)
    {
        instantiateViewControllerWithIdentifier:@"contactUs"]];
        UIViewController *subController = [self.storyboard instantiateViewControllerWithIdentifier:@"contactUs"];
        [mainView addSubview:subController.view];
    }
}

当我选择 select Segment 2 将 uitableviewcontroller 作为 subview 查看时出现错误 x 代码给我以下错误

exc_bad_access (code=1 address=0x110ff210 on line NSDictionary *latests = [latestArray objectAtIndex:indexPath.row];

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"latestCell1";

    latestCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    NSDictionary *latests = [latestArray objectAtIndex:indexPath.row];

    NSString *latest_name_En = [latests objectForKey:@"title_en"];
    NSString *logo1 = [latests objectForKey:@"logo"];
    NSString *img1 = [latests objectForKey:@"img1"];

    NSData *latestsImg1 = [NSData dataWithContentsOfURL:[NSURL URLWithString:img1]];
    NSData *latestsLogo1 = [NSData dataWithContentsOfURL:[NSURL URLWithString:logo1]];    

    cell.latest_name_en1.text = latest_name_En;

    dispatch_async(dispatch_get_main_queue(), ^{

        cell.latest_img1.image = [UIImage imageWithData:latestsImg1];
        cell.latest_logo1.image = [UIImage imageWithData:latestsLogo1];

    });

    return cell;
}

我确信 UITableViewController 工作正常，因为我尝试单独运行它，它也可以在没有自定义单元的情况下尝试它，它也可以工作，但使用自定义单元作为 subview 时，它会给出上面的错误。

Answer 1

感谢您的帮助

我终于弄清楚我用过

[self addChildViewController:subController];
[mainView addSubview:subController.view];

将 TableView 作为 subview 添加到 View Controller

成功了