passing data between children using XLPagerTabStrip

Question

am using https://github.com/xmartlabs/XLPagerTabStrip and i have 3 children ... i want to pass value from child to child ..

am able to pass value from parent to first child like this:

    let parentVC = self.parent as! ParentViewController
    mobile = parentVC.mobile

but now i want to pass it from child 1 to child 2 .. tried the above but i got that mobile is nil

and mobile in the parentview is declared like this:

    var mobile = ""

how can i pass data between children?

       override func viewControllers(for pagerTabStripController: PagerTabStripViewController) -> [UIViewController] {
    let child1 = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "cominfo")
    let child2 = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "comedu")
    let child3 = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "comcv")        
    return [child1,child2,child3]
}

I think you can pass data to parent first then you can access all child from parent. — Dharmesh Kheni, Jul 26 '18 at 06:46
@DharmeshKheni can you please show how you declared the variable mobile in your parentViewController? — Shezad, Jul 26 '18 at 06:48
@DharmeshKheni you can't get data from parent VC using this method, you can only pass data to child VC using this method, if you want to get data use Delegate method. or please explain the scenario. — Shezad, Jul 26 '18 at 07:13
@Shezad i want to get mobile from the parent vc .. am able to do this using what am doing in the first child .. but in the second child am getting the error .. — Lama, Jul 26 '18 at 07:14
@Lama if you want to get from parent VC, you could just pass the value while you push VC from parent VC to child VC — Shezad, Jul 26 '18 at 07:17
@Lama can you just show the code which you used to push to child VC — Shezad, Jul 26 '18 at 07:20
@Lama to which childVC you need to pass data? and to which variabale?? — Shezad, Jul 26 '18 at 07:23
@Lama so you need to pass value to variable mobile in child VC's?? — Shezad, Jul 26 '18 at 07:25
@Shezad yes exactly i want to pass mobile from parent to children's mobile — Lama, Jul 26 '18 at 07:26

Shezad · Accepted Answer · 2018-07-26T07:42:19.037

1

override func viewControllers(for pagerTabStripController: PagerTabStripViewController) -> [UIViewController] {
    let child1 = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "cominfo") as! yourChildClassname
    child1.mobile = self.mobile
    let child2 = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "comedu")as! yourChildClassname
    child2.mobile = self.mobile
    let child3 = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "comcv")  as! yourChildClassname
    child3.mobile = self.mobile       
return [child1,child2,child3]
 }

edited Jul 26 '18 at 07:42

answered Jul 26 '18 at 07:27

Shezad

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already tried this and didn't work .. can you check last screenshot in my post please – Lama Jul 26 '18 at 07:32
@Lama so in child VC you haven't declared a variable named mobile? – Shezad Jul 26 '18 at 07:33
@Lama so please copy that exact variable and paste it after Child1. – Shezad Jul 26 '18 at 07:38
it is the same T_T – Lama Jul 26 '18 at 07:40
Please add your VC class after that – Shezad Jul 26 '18 at 07:41
sorry i didn't understand what do you mean? – Lama Jul 26 '18 at 07:42
oh ok .. just a minute – Lama Jul 26 '18 at 07:43

passing data between children using XLPagerTabStrip

1 Answers1