Question

我想从分段控件中切换子视图控制器。

故事板中有vc1和vc2，主vc的导航控制器栏上有段控制。

我想在主vc上添加vc1和vc2，如何使用段控制器切换子vc？

怎么办？

Answer 1

按照以下步骤操作。

添加VC1＆amp; VC2作为mainVC的childVC。
在第1段选择VC1.view.hidden = false＆amp; vc2.view.hidden = true
在第2段选择VC2.view.hidden = false＆amp; vc1.view.hidden = true

参考

How-to-add-childVC
How-tobind-segment-control-action

代码工作

@IBAction func indexChanged(_ sender: AnyObject) {
    switch segmentedControl.selectedSegmentIndex
    {
    case 0:
        vc1.view.hidden = false
        vc2.view.hidden = true
    case 1:
        vc2.view.hidden = false
        vc1.view.hidden = true
    default:
        break
    }
}

Answer 2

接受的答案显然是正确的，但老实说，我更喜欢在UISegmentedControl中为每个标签使用容器视图。这样，与每个视图相关的逻辑在不同的视图控制器中分离。你可以这样做：

class TopViewController: UIViewController {

    @IBOutlet weak var firstContainerView: UIView!
    @IBOutlet weak var secondContainerView: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()

        firstContainerView.alpha = 1.0
        secondContainerView.alpha = 0.0
    }

    @IBAction func didChangeIndex(_ sender: UISegmentedControl) {
        switch sender.selectedSegmentIndex {
        case 0:
            firstContainerView.alpha = 1.0
            secondContainerView.alpha = 0.0
        case 1:
            firstContainerView.alpha = 0.0
            secondContainerView.alpha = 1.0
        default:
            break
        }
    }
}

如果您想访问FirstViewController或SecondViewController的属性，可以实现prepare(for segue: UIStoryboardSegue, sender: Any?)方法。

Answer 3

您应该将vc和vc.view添加到Main ViewController：

当您选择分段控件时，您可以隐藏子视图控制器的视图，如下所示：

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
    _vc1 = [sb instantiateViewControllerWithIdentifier:@"ViewController1"];
    _vc2 = [sb instantiateViewControllerWithIdentifier:@"ViewController2"];

    [self addChildViewController:_vc1];
    [self addChildViewController:_vc2];
    [self.view addSubview:_vc1.view];
    [self.view addSubview:_vc2.view];

}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
- (IBAction)segAction:(UISegmentedControl *)sender {

    if (1 == sender.selectedSegmentIndex) {
        NSLog(@"1");

        _vc1.view.hidden = YES;
        _vc2.view.hidden = NO;
    }else {
        NSLog(@"%ld", sender.selectedSegmentIndex);
        _vc2.view.hidden = YES;
        _vc1.view.hidden = NO;
    }

}

切换子viewController使用分段控件

3 个答案: