Question

I am using ARC and Storyboard in my iphone application. I have simple input text view with button, On clicking button I am implementing presentModalvuewcontroller to a mainview with Tabbarcontroller. It is working fine. Now I need to conditionally implement setSelectedIndex:1 to tabbarcontroller Here is the code I am using:

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:[NSBundle mainBundle]];
ViewController *viewCon = (ViewController*)[storyboard instantiateViewControllerWithIdentifier:@"MainTab"];
   viewCon.tabBarController.selectedIndex= 1;   
[self presentModalViewController:viewCon animated:YES];

It is working properly.Just not changing the tab. It is displaying on default 0 tab.

Answer 1

In viewDidLoad of ViewController add this line:

self.tabBarController.selectedIndex = 1;

EDIT : call this selectedIndex only when coming from previous view’s button click.

Make one property BOOL flag; in appDeleagete.

Now intially it will be self.flag = FALSE; in application didFinishLaunching.

So on previous view’s button click.

-(void)btnBackClicked:(id)sender
{
   AppDelegate *objAppDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
   objAppDelegate.flag = TRUE;
   ........
}

Now In viewDidLoad of ViewController add these lines:

 AppDelegate *objAppDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
if(objAppDelegate.flag)//if from previous then only tabbar has selected index 1
{
  self.tabBarController.selectedIndex = 1;
}