从视图控制器中删除一些视图

Question

我想从我的根视图控制器中删除当前子视图（添加atIndex：0）并在其位置插入一个新视图。

目前我只能找到显示使用removeFromSuperView卸载视图的代码片段，这需要您知道当前加载的viewcontrollers视图。

唯一需要注意的是，我在rootcontrollers视图中插入了另一个子视图，我不想卸载它。因此，删除所有子视图的代码是不够的

谢谢，

米

if(self.firstscr == nil)
    {
        firstscreen *f = [[firstscreen alloc] initWithNibName:@"firstscreenview" bundle:nil];
        self.firstscr = f;
        [f release];
    }

    ///This is my attempt at getting to the currently loaded view :P
  [[self.view subviews atIndex:0].view removeFromSuperView];


    [self.view insertSubview:firstscr.view atIndex:0];

Answer 1

这是怎么做的（我想通了，是的，我！）

if(self.firstscr == nil)
    {
        firstscreen *f = [[firstscreen alloc] initWithNibName:@"firstscreenview" bundle:nil];
        self.firstscr = f;
        [f release];
    }

    //Remove whatever view is currently loaded at index 0, this index is only to be used by "page" views
    UIView *v = [self.view.subviews objectAtIndex:0];
    [v removeFromSuperview];


    [self.view insertSubview:firstscr.view atIndex:0];