Checking connectivity in an Ionic application

Within my Ionic application, I am faced with the task of executing specific actions depending on whether the user is currently connected to the internet or not.

I plan on utilizing the $cordovaNetwork plugin to determine the connectivity status within the app. However, during development on my laptop computer, I am in search of a simpler method to test the connectivity without needing to deploy the application onto an actual device.

As a potential solution, I have considered utilizing the navigator.onLine function to evaluate offline and online logic. Nonetheless, even if I disable wifi on my laptop (without any LAN cable connected), the navigator.onLine still registers as true.

If anyone could offer guidance on how to manipulate the navigator.onLine function to return false, or suggest alternative methods for discerning internet connectivity, it would be greatly appreciated.

EDIT: I am testing this functionality on Google Chrome browser.

javascriptangularjsionic-framework

Answer №1

A code snippet to check the online or offline status of a device or browser:

// Custom factory to monitor connectivity
.factory('ConnectivityMonitor', function($rootScope, $cordovaNetwork){

  return {
    isOnline: function(){
      // Check if running on a WebView (device)
      if(ionic.Platform.isWebView()){
        return $cordovaNetwork.isOnline(); 
      } else {
        return navigator.onLine;
      }
    },
    isOffline: function(){
      // Check if running on a WebView (device)
      if(ionic.Platform.isWebView()){
        return !$cordovaNetwork.isOnline();    
      } else {
        return !navigator.onLine;
      }
    },
    startWatching: function(){
      // Check if running on a WebView (device)
      if(ionic.Platform.isWebView()){
        // Listen for online event
        $rootScope.$on('$cordovaNetwork:online', function(event, networkState){
          console.log("Device went online");
        });
  
        // Listen for offline event
        $rootScope.$on('$cordovaNetwork:offline', function(event, networkState){
          console.log("Device went offline");
        });
  
      }else {
        // Listen for online event
        window.addEventListener("online", function(e) {
          console.log("Browser went online");
        }, false);    
  
        // Listen for offline event
        window.addEventListener("offline", function(e) {
          console.log("Browser went offline");
        }, false);  
      }       
    }
  }
})

An example usage in a controller:

.controller('Map3Ctrl',   
function(ConnectivityMonitor) {

 if(ConnectivityMonitor.isOnline()){
    console.log("Device is online")
 }else{
  console.log("Device is offline");
 }

})

An article on monitoring online and offline states in an Ionic application

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