Exit from an ionic app by using hardware back-button

Exit from an ionic app by using hardware back-button:-

For exiting from an ionic app by pressing the hardware back-button, we do the following steps:-

1) Firstly disable the hardware back-button.

 2)Then on HardwareBackButton exit from app.

1) Disable hardware back-button:-

HardwareBackButtonManager Service for Ionic (Angular.js) provides an interface to easily disable the hardware back button on Android

.service( 'HardwareBackButtonManager', function($ionicPlatform){


this.deregister = undefined;


 


this.disable = function(){


this.deregister = $ionicPlatform.registerBackButtonAction(function(e){


e.preventDefault();


return false;


}, 101);


}




return this;


})


 


// usage


.controller( 'YourController', function( 'HardwareBackButtonManager' ){


HardwareBackButtonManager.disable();




})








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2) On HardwareBackButton exit from app:-

Put the following code accordingly to your angular.run configuration, and that's

it. 



.run(function($ionicPlatform, $ionicPopup) {
  $ionicPlatform.onHardwareBackButton(function () {
      if(true) { // your check here
          $ionicPopup.confirm({
            title: 'System warning',
            template: 'are you sure you want to exit?'
          }).then(function(res){
            if( res ){
              navigator.app.exitApp();
            }
          })
      }
  })
});