ios - 正确添加和 UIViewController 到另一个

Question

今晚一个人面临这个问题:

- (void)loadView {
    VC *vc = [[VC alloc] initWithStyle:UITableViewStyleGrouped];
    [self addChildViewController:vc];
    [vc removeFromParentViewController];
    [self setView:vc.view];
}

得到了一颗炸弹:

uncaught exception 'UIViewControllerHierarchyInconsistency', reason:
'A view can only be associated with at most one view controller at a time!

问:如何在不使用AddSubView的情况下直接将vc及其所有功能添加到当前的ViewController中？

Answer 1

将 TableView Controller 的 View 添加为当前 View 的 subview 。您不应该在 vc 上调用 removeFromParentViewController，因为这实际上会否定之前的行。将框架设置为与父级匹配也是一个好主意。

- (void)loadView 
{
    [super loadView]; // this will create a basic view

    VC *vc = [[VC alloc] initWithStyle:UITableViewStyleGrouped];

    [self addChildViewController:vc];

    vc.view.frame = self.view.bounds;
    vc.view.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight;
    [self.view addSubview:vc.view];

    [vc didMoveToParentViewController:self];
}