Setting up UIScrollView to swipe between 3 view controllers

Question

I am trying to set up a UIScrollView so that I can swipe between my 3 view controllers. This is my code in AppDelegate.m:

- (BOOL)application:(UIApplication          


        

Answer 1

    let obj1 = self.storyboard?.instantiateViewControllerWithIdentifier("DocumentsVC") as! DocumentsVC
    let obj2 = self.storyboard?.instantiateViewControllerWithIdentifier("AppointmentsVC") as! AppointmentsVC
    let obj3 = self.storyboard?.instantiateViewControllerWithIdentifier("DashboardVC") as! DashboardVC

    self.containerScrollView.frame = obj2.view.frame

    self.containerScrollView.addSubview(obj2.view)
    obj2.willMoveToParentViewController(self)
    self.addChildViewController(obj2)

    self.containerScrollView.addSubview(obj1.view)
    obj1.willMoveToParentViewController(self)
    self.addChildViewController(obj1)

    self.containerScrollView.addSubview(obj3.view)
    obj3.willMoveToParentViewController(self)
    self.addChildViewController(obj3)

    self.containerScrollView.contentSize = CGSizeMake(3*UIScreen.mainScreen().bounds.width, 0)

    obj1.view.frame.origin =  CGPointMake(0, 0)
    obj2.view.frame.origin =  CGPointMake(UIScreen.mainScreen().bounds.width, 0)
    obj3.view.frame.origin = CGPointMake(2*UIScreen.mainScreen().bounds.width, 0)