Disable hardware back button in Ionic application?

Question

I\'m trying to disable the back button on my Cordova app. I\'m using AngularJS + Ionic Framework. I found topics about this and tried the code bellow, but it has absolutely

Answer 1

To prevent App from device back button functionality use,

      $ionicPlatform.registerBackButtonAction(function (event) {
           event.preventDefault();
      }, 100);

If you want to prevent the particular page use,

       $ionicPlatform.registerBackButtonAction(function (event) {
           event.preventDefault();
           if ($location.path() === "/pagename" || $location.path() === "pagename") {
             navigator.app.exitApp();
           } else {
             $ionicHistory.goBack();
           }
        }, 100);