Stopping the ability to navigate within an Ionic application

I am attempting to block navigation and display a popup in a controller.

$rootScope.$on('$stateChangeStart', function(event, toState, toParams, fromState, fromParams) {
  if(someConditionMet) {
    event.preventDefault();
    showPopup();
  }
}

Everything is functioning perfectly except for tab navigation. The prevention of navigation does not work properly as it goes to the tab first and then displays the popup. Additionally, when the scope changes, the popup fails to load correctly and triggers an exception. I end up with a blank popup with no way to close it.

Edit - Check out this Plunker demo http://plnkr.co/edit/r8MxO6tDZfTlHPXrVJlM?p=preview

When you click on About from the side menu, the prevention works smoothly. But when you click on the settings tab, it tries to navigate to the tab first before showing the popup. Also, the settings tab fails to load successfully.

javascriptangularjscordovaionic-framework

Answer №1

I made changes to the state called "settings" (renamed to "tabs.about", which is nested within "tabs"):

.state('tabs.about', {
  url: '/about',
  controller: 'AboutCtrl',
  templateUrl: 'about.html'
});

Additionally, I introduced a new controller named "mainCtrl" attached to the <body>. I transferred the $stateChangeStart event handler to this controller from the Home controller. This allows it to listen to events regardless of the current state:

  $rootScope.$on('$stateChangeStart', function(event, toState, toParams, fromState, fromParams) {
    var message = '$stateChangeStart from: '+fromState.name+" to "+toState.name;
    console.log(message);
    $rootScope.log = message;
  })

For an updated version, you can check out the plunker here:

http://plnkr.co/edit/xcTMzPJdTVgVxV5jgpho

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