poptorootviewcontroller when clicking a button

1
votes

Let me explain clearly now,

I have a tabbarcontoller in the viewcontroller which is the main view controller of the single view application project.

I added a tabbarcontroller to the viewcontroller as the subview. In the tabbarcontroller, I added two navigation controllers like below image,

enter image description here

I have added three(named First, Second, Third) more viewcontrollers as new file.

If I navigate from one viewcontroller to other in the first tab using below code,

third =  [[Third alloc] initWithNibName:@"Third" bundle:[NSBundle mainBundle]];
[self.navigationController pushViewController:third animated:YES];

Then I switch to second tab by clicking the tab below the tabbarcontroller.

and then

If I switch to next tab(first tab) by clicking a button in third view controller using,

-(IBAction)switchtab
{
    vc.tabctrl.selectedIndex=0;
    //vc is the main viewcontroller to which the tabbarcontoller(tabctrl) added as subview
}

After switching to next tab, there I should poptorootviewcontroller, I tried below code

-(IBAction)switchtab
{
    vc.tabctrl.selectedIndex=0;
    [vc.tabctrl.navigationController  popToViewController:[self.navigationController.viewControllers objectAtIndex:0] animated:YES];
}

But it jumps to next tab but popToViewController not working, any suggestions?

2
iphoneiosobjective-cuinavigationcontrolleruitabbarcontroller

2 Answers

3
votes

If your viewcontroller are of navigation controller then following code will change to root view when you switch the tab

- (void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController
{
    if ([self.tabBarController.selectedViewController isKindOfClass:[UINavigationController class]])
    {
        [(UINavigationController*)self.tabBarController.selectedViewController popToRootViewControllerAnimated:YES];


    }

}
1
votes

I did not understand the whole structure here, but I have realised that you are using different controllers to push the vc "third" and to pop to root. Can you try:

[self.navigationController  popToViewController:[self.navigationController.viewControllers objectAtIndex:0] animated:YES];

in the same class you are using to push the "third"?

Edit: Another option, can you try this:

-(IBAction)switchtab
{
    vc.tabctrl.selectedIndex=0;
    [(UINavigationController*)vc.tabctrl.selectedViewController popToRootViewControllerAnimated:YES];

}