iOS 11

[Ljmedia]

Hello,

the project is compiling in Xcode 9, but it seems there is an issue with some constraints.

Best regards, Lars

[drak25]

Update addViewController method to make it work in ios11 :

• (void)addViewController:(RTWalkthroughPageViewController *)vc {

  [self.controllers addObject:vc]; [self addChildViewController:vc]; [vc didMoveToParentViewController:self];

  if ([vc respondsToSelector:@selector(setDelegate:)]) vc.delegate = self;

  // Setup the viewController view

  vc.view.translatesAutoresizingMaskIntoConstraints = NO; [self.scrollview addSubview:vc.view];

  // Constraints

  NSDictionary metrics = @{@"w":@(vc.view.bounds.size.width),@"h":@(vc.view.bounds.size.height)}; NSDictionary viewsDict = @{@"view":vc.view, @"container": self.scrollview}; // - Generic cnst [self.scrollview addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:[view(==container)]" options:0 metrics:metrics views:viewsDict]]; [self.scrollview addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:[view(==container)]" options:0 metrics:metrics views:viewsDict]]; [self.scrollview addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-0-[view]|" options:0 metrics:nil views:viewsDict]];

  // cnst for position: 1st element

  if (self.controllers.count == 1) { [self.scrollview addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[view]" options:0 metrics:nil views:@{@"view":vc.view}]];

  // cnst for position: other elements

  } else{

  UIViewController *previousVC = self.controllers[self.controllers.count-2];
  UIView *previousView = previousVC.view;
  
  [self.scrollview addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:[previousView]-0-[view]" options:0 metrics:nil views:@{@"previousView":previousView, @"view":vc.view}]];
  
  if (self.lastViewConstraint) {
      [self.scrollview removeConstraints:self.lastViewConstraint];
  }
  
  self.lastViewConstraint = [NSLayoutConstraint constraintsWithVisualFormat:@"H:[view]-0-|" options:0 metrics:nil views:@{@"view":vc.view}];
  [self.scrollview addConstraints:self.lastViewConstraint];

  } }

Also change constraints in viewDidLoad to :

[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[scrollview]-0-|" options:0 metrics:nil views:@{@"scrollview":self.scrollview}]];
[self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-0-[scrollview]-0-|" options:0 metrics:nil views:@{@"scrollview":self.scrollview}]];

(not sure if the latter is necessary, but did it anyway to match constraints from original Walkthrough on which this project is based on).