Sometimes we get requests for using native java methods from Unity code in the Oculus Application. Below, we describe one of the ways we can check if Wi-Fi and internet connection are enabled on the Oculus headset from the Unity Engine code part. In this sample application, we check if Wi-Fi is switched on or off on the Oculus app and if we have an internet connection to this Wi-Fi. At first, we need to call the native java class method using this code to call Wi-Fi availability: /// /// Send request to JavaClass to check if wifi is enabled on oculus /// /// private bool DeviceWiFiAndroidRequest () { var isWifiEnabled = false; try { // An activity provides the window where the app draws its UI. // Typically, one activity in an app is specified as the main activity, which is the first screen to appear when the user launches the app. // Get current activity in unity project from java classes. // AndroidJavaClass: Construct an AndroidJavaClass from the class name. // GetStatic: Get the value of a static field in an object type. using (var activity = new AndroidJavaClass ("com.unity3d.player.UnityPlayer"). GetStatic ("currentActivity")) { // Method "getSystemService": Gets the name of the system-level service that is represented by the specified class. // As the parameter arguments, we pass the name of the package with handle "getSystemService". // The class of the returned object varies by the requested name. // Get "WifiManager" for management of Wi-Fi connectivity. using (var wifiManager = activity.Call ("getSystemService", "wifi")) { // Call: Calls a Java method on an object. Call, T – return type // Call method "isWifiEnabled". Return whether Wi-Fi is enabled or disabled. Returns bool value. isWifiEnabled = wifiManager.Call ("isWifiEnabled"); } } } catch (Exception e) { Debug.LogError ("Android request exception: " + e.Message); } return isWifiEnabled; } After that, we need to check if we have an internet connection on connected Wi-Fi. Also, we need to call the native java class method. /// /// Request to JavaClass to check if internet connection is reachable /// /// private bool NetworkConnectionAndroidRequest () { var isNetworkEnabled = false; try { using (var activity = new AndroidJavaClass ("com.unity3d.player.UnityPlayer"). GetStatic ("currentActivity")) { // Get "ConnectivityManager" for handling management of network connections. using (var connectivityManager = activity.Call ("getSystemService", "connectivity")) { // Call method "getActiveNetworkInfo" that returns details about the currently active default data network. // Call method "isConnected" that indicates if network connectivity exists. Returns bool value. isNetworkEnabled = connectivityManager.Call ("getActiveNetworkInfo"). Call ("isConnected"); } } } catch (Exception e) { Debug.LogError ("Android request exception: " + e.Message); } return isNetworkEnabled; } After this, we have to use a coroutine to check these two parameters. We check each for 2 seconds. /// /// Check if the application is connected to Wi-Fi in coroutine /// /// private IEnumerator CheckDeviceWifiConnection () { yield return new WaitForSecondsRealtime (2f); while (true) { yield return new WaitForSecondsRealtime (checkDelay); wifiConnection = DeviceWiFiAndroidRequest (); wifiMessage.text = wifiConnection ? "Wifi On" : "Wifi Off"; } } /// /// Check if the application is connected to Wi-Fi in coroutine /// /// private IEnumerator CheckNetworkConnection () { yield return new WaitForSecondsRealtime (2f); while (true) { yield return new WaitForSecondsRealtime (checkDelay); internetConnection = NetworkConnectionAndroidRequest (); internetMessage.text = internetConnection ? "Internet reachable" : "Internet not reachable"; } } Below, you can see the full script for checking internet connection and Wi-Fi availability on the Oculus Quest 2 from Unity code using native java methods.
