Ionic - Javascript Loading

Ionic loading will disable any interaction with users when showed and enable it again when it is needed.

Using Loading

Loading is triggered inside the controller. First, we need to inject $ionicLoading in our controller as dependency. After that, we need to call the $ionicLoading.show() method and loading will appear. For disabling it, there is a $ionicLoading.hide() method.

Controller

.controller('myCtrl', function($scope, $ionicLoading) {

   $scope.showLoading = function() {
      $ionicLoading.show({
         template: 'Loading...'
      });
   };

   $scope.hideLoading = function(){
      $ionicLoading.hide();
   };
});

HTML Code

<button class = "button button-block" ng-click = "showLoading()"></button>

When a user taps the button, the loading will appear. You will usually want to hide the loading after some time consuming functionalities are finished.

Some other option parameters can be used when working with loading. The explanation is shown in the table below.

Loading option parameters

Options	Type	Details
templateUrl	string	Used to load HTML template as loading indicator.
scope	object	Used to pass custom scope to loading. Default is the $rootScope.
noBackdrop	Boolean	Used to hide the backdrop.
hideOnStateChange	Boolean	Used to hide the loading when state is changed.
delay	number	Used to delay showing the indicator in milliseconds.
duration	number	Used to hide the indicator after some time in milliseconds. Can be used instead of hide()method.

Loading Config

Ionic config is used to configure options you want to be used in all of the $ionicLoading services throughout the app.

This can be done by using $ionicLoadingConfig. Since constants should be added to the main app module, open your app.js file and add your constant after module declaration.

.constant('$ionicLoadingConfig', {
   template: 'Default Loading Template...'
})

The above code will produce the following screen −