SWRevealViewController: Remove interaction on frontview when rearview is revealed

Question

I need to disable user interaction on front view when rear view is revealed. Found some others asking the same thing but can\'t really understand where or how to implement t

Answer 1

Swift 3.0 simple and fast method.

Frontviewcontoller code here...

override func viewDidLoad() {
    super.viewDidLoad()
     if self.revealViewController() != nil {
        let rewel:SWRevealViewController  = revealViewController()
        rewel.panGestureRecognizer()
        rewel.tapGestureRecognizer() 
    }
}

SideDrowerviewcontoller code here...

override func viewWillAppear(_ animated: Bool) {
  let rewel = self.revealViewController()
      rewel?.frontViewController.view.isUserInteractionEnabled = false
    rewel?.frontViewController.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
}

override func viewWillDisappear(_ animated: Bool) {
    let rewel = self.revealViewController()
        rewel?.frontViewController.view.isUserInteractionEnabled = true
}

Answer 2

class SideMenuViewController: UITableViewController {

  override func viewDidLoad() {
    super.viewDidLoad()
    self.revealViewController().delegate = self
  }

}

extension SideMenuViewController: SWRevealViewControllerDelegate {

  func revealController(revealController: SWRevealViewController!, willMoveToPosition position: FrontViewPosition) {
    if position == .Left {
      revealController.frontViewController.view.userInteractionEnabled = true
    }

    if position == .Right {
      revealController.frontViewController.view.userInteractionEnabled = false
    }
  }

}

Answer 3

Swift version to @hardluckbaby answer:

In MenuViewController(Rear view controller):

override func viewWillAppear(animated: Bool) {
    super.viewWillAppear(animated)

    self.revealViewController().frontViewController.view.userInteractionEnabled = false
    self.revealViewController().view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
}

override func viewWillDisappear(animated: Bool) {
    super.viewWillDisappear(animated)

    self.revealViewController().frontViewController.view.userInteractionEnabled = true
}

In FrontViewController(You can make a ParentViewController for all of your front view controllers as @hardluckbaby said):

override func viewDidLoad() {
    super.viewDidLoad()

    if let revealController = self.revealViewController() {
        revealController.panGestureRecognizer()
        revealController.tapGestureRecognizer()
    }
}

Answer 4

Add a subview to front view when rear view is open.

Answer 5

Firstly just set your delegate : self.revealViewController.delegate = self; and the delegate method are given below :

- (void)revealController:(SWRevealViewController *)revealController willMoveToPosition:(FrontViewPosition)position
{
    static NSInteger tagLockView = 123456789;
    if (revealController.frontViewPosition == FrontViewPositionRight)
    {
        UIView *lockView = [self.view viewWithTag:tagLockView];

        [UIView animateWithDuration:0.3 animations:^{
            lockView.alpha = 0;
        } completion:^(BOOL finished) {
            [lockView removeFromSuperview];
        }];
    }
    else if (revealController.frontViewPosition == FrontViewPositionLeft)
    {
        UIView *lockView = [[UIView alloc] initWithFrame:self.view.bounds];
        lockView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
        lockView.tag = tagLockView;
        lockView.backgroundColor = [UIColor blackColor];
        lockView.alpha = 0;
        [lockView addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self.revealViewController action:@selector(revealToggle:)]];
        [self.view addSubview:lockView];
        [UIView animateWithDuration:0.3 animations:^{
            lockView.alpha = 0.5;
        }];
    }

}

Answer 6

I've recently come up with a solution that I wanted to share (sorry if it's 2 months late).

To disable user interaction on the Front View while the Menu is open, I added the following codes on my MenuViewController:

on viewWillAppear:

[self.revealViewController.frontViewController.view setUserInteractionEnabled:NO];

and on viewWillDisappear:

[self.revealViewController.frontViewController.view setUserInteractionEnabled:YES];

This will disable all user interactions on the Front View Controller, which means that the slide / tap gestures to CLOSE the menu will also be DISABLED.

Now, I have created a ParentViewController and made all the view controllers (the menu items) a subclass of it.

on my viewDidLoad, I put the following codes:

SWRevealViewController *revealController = [self revealViewController];
[revealController panGestureRecognizer];
[revealController tapGestureRecognizer];

If you run your app at this point, it would appear that the Tap Gesture works (a tap on the Front View will close the Menu), but NOT the Pan Gesture. I'm not sure why this is so, but in order to enable the slide gesture to CLOSE your menu, add the following code in your MenuViewController:

on viewWillAppear:

[self.revealViewController.view addGestureRecognizer:self.revealViewController.panGestureRecognizer];

To summarize, here's what you need:

On your MenuViewController:

-(void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];

    [self.revealViewController.frontViewController.view setUserInteractionEnabled:NO];
    [self.revealViewController.view addGestureRecognizer:self.revealViewController.panGestureRecognizer];
}

-(void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];

    [self.revealViewController.frontViewController.view setUserInteractionEnabled:YES];
}

And on your menu items' view controller (you can make a ParentViewController for all of them):

-(void)viewDidLoad {
    [super viewDidLoad];

    SWRevealViewController *revealController = [self revealViewController];
    [revealController panGestureRecognizer];
    [revealController tapGestureRecognizer];
}

Hope this helps!