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POAngularJS - $broadcast message to controllers generates duplicate notifications
 

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  1. POAngularJS - $broadcast message to controllers generates duplicate notifications
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    <p>In my AngularJs and phonegap/cordova application I listen for the back button event. I then broadcast this to certain controllers within my <em>app.js</em>:</p> <pre><code>document.addEventListener("deviceready", function(){ document.addEventListener('backbutton', function(){ $rootScope.$broadcast('backButton'); }, false); }, false); </code></pre> <p>In certain views I want to listen to this so that I can inform the user that they will be quitting the app and give them the option to continue or not.</p> <p>So there are two controls, lobby and game.</p> <p>When a user clicks back in the lobby they should see a notification telling them they will be quitting the app:</p> <pre><code>$rootScope.$on('backButton', function(event){ $window.navigator.notification.confirm( 'Are you sure you want to exit app?', // message $scope.exitApp, // callback to invoke 'APP', // title ['OK', 'Cancel'] // button labels ); </code></pre> <p>And if they hit OK they are logged out from the app and re-directed to the login screen.</p> <p>When they are in the game view they should be informed they will be quitting their game and then redirected to the lobby:</p> <pre><code>$rootScope.$on('backButton', function(event){ $window.navigator.notification.confirm( 'Are you sure you want to quit your game?', // message $scope.quitGame, // callback to invoke 'GAME', // title ['OK', 'Cancel'] // button labels ); }); </code></pre> <p>The issue I am seeing is that when I am in the game I see both notifications when I click the back button. One for the game which is correct but then an additional one for the lobby which is not needed.</p> <p>So this is not really a defect, this is how it should work but being relatively new to Angular I am not sure of best approach as broadcast seems inappropriate here.</p>
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