Merge pull request #1506 from kiwix/iadeelzafar/manual-hotspot

Iadeelzafar/manual hotspot

app/src/main/AndroidManifest.xml

@@ -12,9 +12,6 @@
   <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
   <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
 
-  <!-- Devices with version >= Oreo need location permission to start/stop the hotspot -->
-  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
-
   <!-- Device with versions >= Pie need this permission -->
   <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
 

app/src/main/java/org/kiwix/kiwixmobile/di/modules/ServiceModule.kt

@@ -1,10 +1,8 @@
 package org.kiwix.kiwixmobile.di.modules
 
-import android.app.Application
 import android.app.NotificationManager
 import android.app.Service
 import android.content.Context
-import android.net.wifi.WifiManager
 import dagger.Module
 import dagger.Provides
 import org.kiwix.kiwixlib.JNIKiwixLibrary
@@ -12,9 +10,9 @@ import org.kiwix.kiwixlib.JNIKiwixServer
 import org.kiwix.kiwixmobile.di.ServiceScope
 import org.kiwix.kiwixmobile.webserver.WebServerHelper
 import org.kiwix.kiwixmobile.wifi_hotspot.HotspotNotificationManager
-import org.kiwix.kiwixmobile.wifi_hotspot.HotspotStateListener
+import org.kiwix.kiwixmobile.wifi_hotspot.HotspotStateReceiver
+import org.kiwix.kiwixmobile.wifi_hotspot.HotspotStateReceiver.Callback
 import org.kiwix.kiwixmobile.wifi_hotspot.IpAddressCallbacks
-import org.kiwix.kiwixmobile.wifi_hotspot.WifiHotspotManager
 
 @Module
 class ServiceModule {
@@ -27,19 +25,6 @@ class ServiceModule {
     ipAddressCallbacks: IpAddressCallbacks
   ): WebServerHelper = WebServerHelper(jniKiwixLibrary, kiwixServer, ipAddressCallbacks)
 
-  @Provides
-  @ServiceScope
-  fun providesWifiHotspotManager(
-    wifiManager: WifiManager,
-    hotspotStateListener: HotspotStateListener
-  ): WifiHotspotManager =
-    WifiHotspotManager(wifiManager, hotspotStateListener)
-
-  @Provides
-  @ServiceScope
-  fun providesHotspotStateListener(service: Service): HotspotStateListener =
-    service as HotspotStateListener
-
   @Provides
   @ServiceScope
   fun providesIpAddressCallbacks(service: Service): IpAddressCallbacks =
@@ -54,11 +39,6 @@ class ServiceModule {
   fun providesJNIKiwixServer(jniKiwixLibrary: JNIKiwixLibrary): JNIKiwixServer =
     JNIKiwixServer(jniKiwixLibrary)
 
-  @Provides
-  @ServiceScope
-  fun providesWifiManager(context: Application): WifiManager =
-    context.getSystemService(Context.WIFI_SERVICE) as WifiManager
-
   @Provides
   @ServiceScope
   fun providesHotspotNotificationManager(
@@ -66,4 +46,16 @@ class ServiceModule {
     context: Context
   ): HotspotNotificationManager =
     HotspotNotificationManager(notificationManager, context)
+
+  @Provides
+  @ServiceScope
+  fun providesHotspotStateReceiver(
+    callback: Callback
+  ): HotspotStateReceiver = HotspotStateReceiver(callback)
+
+  @Provides
+  @ServiceScope
+  fun providesHotspotStateReceiverCallback(
+    service: Service
+  ): HotspotStateReceiver.Callback = service as Callback
 }

app/src/main/java/org/kiwix/kiwixmobile/webserver/LocationCallbacks.java

@@ -1,5 +0,0 @@
-package org.kiwix.kiwixmobile.webserver;
-
-public interface LocationCallbacks {
-  void onLocationSet();
-}

app/src/main/java/org/kiwix/kiwixmobile/webserver/LocationServicesHelper.java

@@ -1,107 +0,0 @@
-package org.kiwix.kiwixmobile.webserver;
-
-import android.app.Activity;
-import android.content.Intent;
-import android.content.IntentSender;
-import android.util.Log;
-import androidx.annotation.NonNull;
-import com.google.android.gms.common.api.ApiException;
-import com.google.android.gms.common.api.ResolvableApiException;
-import com.google.android.gms.location.LocationRequest;
-import com.google.android.gms.location.LocationSettingsRequest;
-import com.google.android.gms.location.LocationSettingsResponse;
-import com.google.android.gms.location.LocationSettingsStates;
-import com.google.android.gms.location.LocationSettingsStatusCodes;
-import com.google.android.gms.tasks.Task;
-import javax.inject.Inject;
-
-public class LocationServicesHelper {
-  private static final String TAG = "LocationServicesHelper";
-  private final LocationCallbacks locationCallbacks;
-  private final Activity activity;
-  private static final int LOCATION_SETTINGS_PERMISSION_RESULT = 101;
-
-  @Inject
-  public LocationServicesHelper(@NonNull Activity activity,
-    @NonNull LocationCallbacks locationCallbacks) {
-    this.activity = activity;
-    this.locationCallbacks = locationCallbacks;
-  }
-
-  private Task<LocationSettingsResponse> task;
-
-  public void setupLocationServices() {
-    LocationRequest locationRequest = new LocationRequest();
-    locationRequest.setInterval(10);
-    locationRequest.setSmallestDisplacement(10);
-    locationRequest.setFastestInterval(10);
-    locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
-    LocationSettingsRequest.Builder builder = new
-      LocationSettingsRequest.Builder();
-    builder.addLocationRequest(locationRequest);
-
-    task = com.google.android.gms.location.LocationServices.getSettingsClient(activity)
-      .checkLocationSettings(builder.build());
-
-    locationSettingsResponseBuilder();
-  }
-
-  private void locationSettingsResponseBuilder() {
-    task.addOnCompleteListener(task -> {
-      try {
-        LocationSettingsResponse response = task.getResult(ApiException.class);
-        // All location settings are satisfied. The client can initialize location
-        // requests here.
-
-        locationCallbacks.onLocationSet();
-        //}
-      } catch (ApiException exception) {
-        switch (exception.getStatusCode()) {
-          case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
-            // Location settings are not satisfied. But could be fixed by showing the
-            // user a dialog.
-            try {
-              // Cast to a resolvable exception.
-              ResolvableApiException resolvable = (ResolvableApiException) exception;
-              // Show the dialog by calling startResolutionForResult(),
-              // and check the result in onActivityResult().
-              resolvable.startResolutionForResult(
-                activity,
-                LOCATION_SETTINGS_PERMISSION_RESULT);
-            } catch (IntentSender.SendIntentException e) {
-              // Ignore the error.
-            } catch (ClassCastException e) {
-              // Ignore, should be an impossible error.
-            }
-            break;
-          case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
-            // Location settings are not satisfied. However, we have no way to fix the
-            // settings so we won't show the dialog.
-            break;
-          default:
-            break;
-        }
-      }
-    });
-  }
-
-  public void onActivityResult(int requestCode, int resultCode, @NonNull Intent data) {
-    //Checking the result code for LocationSettings resolution
-    if (requestCode == LOCATION_SETTINGS_PERMISSION_RESULT) {
-      final LocationSettingsStates states = LocationSettingsStates.fromIntent(data);
-      switch (resultCode) {
-        case Activity.RESULT_OK:
-          // All required changes were successfully made
-          Log.v(TAG, states.isLocationPresent() + "");
-          locationCallbacks.onLocationSet();
-          break;
-        case Activity.RESULT_CANCELED:
-          // The user was asked to change settings, but chose not to
-          Log.v(TAG, "Canceled");
-          break;
-        default:
-          break;
-      }
-    }
-  }
-}

app/src/main/java/org/kiwix/kiwixmobile/webserver/ZimHostActivity.java

@@ -1,14 +1,10 @@
 package org.kiwix.kiwixmobile.webserver;
 
-import android.Manifest;
 import android.app.ProgressDialog;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.content.ServiceConnection;
-import android.content.pm.PackageManager;
-import android.net.wifi.WifiConfiguration;
-import android.os.Build;
 import android.os.Bundle;
 import android.os.IBinder;
 import android.util.Log;
@@ -18,8 +14,6 @@ import android.widget.Toast;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.widget.Toolbar;
-import androidx.core.app.ActivityCompat;
-import androidx.core.content.ContextCompat;
 import androidx.recyclerview.widget.RecyclerView;
 import butterknife.BindView;
 import java.io.File;
@@ -40,13 +34,11 @@ import org.kiwix.kiwixmobile.zim_manager.fileselect_view.adapter.BooksOnDiskAdap
 import org.kiwix.kiwixmobile.zim_manager.fileselect_view.adapter.BooksOnDiskListItem;
 
 import static org.kiwix.kiwixmobile.wifi_hotspot.HotspotService.ACTION_CHECK_IP_ADDRESS;
-import static org.kiwix.kiwixmobile.wifi_hotspot.HotspotService.ACTION_LOCATION_ACCESS_GRANTED;
 import static org.kiwix.kiwixmobile.wifi_hotspot.HotspotService.ACTION_START_SERVER;
 import static org.kiwix.kiwixmobile.wifi_hotspot.HotspotService.ACTION_STOP_SERVER;
-import static org.kiwix.kiwixmobile.wifi_hotspot.HotspotService.ACTION_TOGGLE_HOTSPOT;
 
 public class ZimHostActivity extends BaseActivity implements
-  ZimHostCallbacks, ZimHostContract.View, LocationCallbacks {
+    ZimHostCallbacks, ZimHostContract.View {
 
   @BindView(R.id.startServerButton)
   Button startServerButton;
@@ -61,11 +53,7 @@ public class ZimHostActivity extends BaseActivity implements
   @Inject
   AlertDialogShower alertDialogShower;
 
-  @Inject
-  LocationServicesHelper locationServicesHelper;
-
   private static final String TAG = "ZimHostActivity";
-  private static final int MY_PERMISSIONS_ACCESS_FINE_LOCATION = 102;
   private static final String IP_STATE_KEY = "ip_state_key";
   public static final String SELECTED_ZIM_PATHS_KEY = "selected_zim_paths";
 
@@ -133,16 +121,12 @@ public class ZimHostActivity extends BaseActivity implements
   }
 
   private void startHotspotHelper() {
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-      toggleHotspot();
-    } else {
       if (ServerUtils.isServerStarted) {
         startService(createHotspotIntent(ACTION_STOP_SERVER));
       } else {
         startHotspotManuallyDialog();
       }
   }
-  }
 
   private ArrayList<String> getSelectedBooksPath() {
     ArrayList<String> selectedBooksPath = new ArrayList<>();
@@ -190,21 +174,6 @@ public class ZimHostActivity extends BaseActivity implements
     }
   }
 
-  private void toggleHotspot() {
-    //Check if location permissions are granted
-    if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
-      == PackageManager.PERMISSION_GRANTED) {
-      //Toggle hotspot if location permissions are granted
-      startService(createHotspotIntent(
-        ACTION_TOGGLE_HOTSPOT));
-    } else {
-      //Ask location permission if not granted
-      ActivityCompat.requestPermissions(this,
-        new String[] { Manifest.permission.ACCESS_FINE_LOCATION },
-        MY_PERMISSIONS_ACCESS_FINE_LOCATION);
-    }
-  }
-
   @Override protected void onResume() {
     super.onResume();
     presenter.loadBooks();
@@ -233,23 +202,6 @@ public class ZimHostActivity extends BaseActivity implements
     booksAdapter.notifyDataSetChanged();
   }
 
-  @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
-    @NonNull int[] grantResults) {
-    if (requestCode == MY_PERMISSIONS_ACCESS_FINE_LOCATION) {
-      if (grantResults.length > 0
-        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-          toggleHotspot();
-        }
-      }
-    }
-  }
-
-  @Override
-  protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
-    locationServicesHelper.onActivityResult(requestCode, resultCode, (data));
-  }
-
   @Override protected void onDestroy() {
     super.onDestroy();
     presenter.detachView();
@@ -302,18 +254,6 @@ public class ZimHostActivity extends BaseActivity implements
     Toast.makeText(this, R.string.server_failed_toast_message, Toast.LENGTH_LONG).show();
   }
 
-  @Override public void onHotspotTurnedOn(@NonNull WifiConfiguration wifiConfiguration) {
-    alertDialogShower.show(new KiwixDialog.ShowHotspotDetails(wifiConfiguration),
-      (Function0<Unit>) () -> {
-        progressDialog =
-          ProgressDialog.show(this,
-            getString(R.string.progress_dialog_starting_server), "",
-            true);
-        startService(createHotspotIntent(ACTION_CHECK_IP_ADDRESS));
-        return Unit.INSTANCE;
-      });
-  }
-
   private void launchTetheringSettingsScreen() {
     final Intent intent = new Intent(Intent.ACTION_MAIN, null);
     intent.addCategory(Intent.CATEGORY_LAUNCHER);
@@ -324,19 +264,6 @@ public class ZimHostActivity extends BaseActivity implements
     startActivity(intent);
   }
 
-  @Override public void onHotspotFailedToStart() {
-    //Show a dialog to turn off default hotspot
-    alertDialogShower.show(KiwixDialog.TurnOffHotspotManually.INSTANCE,
-      (Function0<Unit>) () -> {
-        launchTetheringSettingsScreen();
-        return Unit.INSTANCE;
-      });
-  }
-
-  @Override public void requestLocationAccess() {
-    locationServicesHelper.setupLocationServices();
-  }
-
   @Override protected void onSaveInstanceState(@Nullable Bundle outState) {
     super.onSaveInstanceState(outState);
     if (ServerUtils.isServerStarted) {
@@ -348,10 +275,6 @@ public class ZimHostActivity extends BaseActivity implements
     booksAdapter.setItems(books);
   }
 
-  @Override public void onLocationSet() {
-    startService(createHotspotIntent(ACTION_LOCATION_ACCESS_GRANTED));
-  }
-
   @Override public void onIpAddressValid() {
     progressDialog.dismiss();
     startService(createHotspotIntent(ACTION_START_SERVER).putStringArrayListExtra(

app/src/main/java/org/kiwix/kiwixmobile/webserver/ZimHostCallbacks.java

@@ -11,12 +11,6 @@ public interface ZimHostCallbacks {
 
   void onServerFailedToStart();
 
-  void onHotspotTurnedOn(@NonNull WifiConfiguration wifiConfiguration);
-
-  void onHotspotFailedToStart();
-
-  void requestLocationAccess();
-
   void onIpAddressValid();
 
   void onIpAddressInvalid();

app/src/main/java/org/kiwix/kiwixmobile/webserver/ZimHostModule.java

@@ -18,16 +18,5 @@ public class ZimHostModule {
   @Provides Activity providesActivity(ZimHostActivity zimHostActivity) {
     return zimHostActivity;
   }
-
-  @ActivityScope
-  @Provides LocationServicesHelper providesLocationServicesHelper(ZimHostActivity activity,
-    LocationCallbacks locationCallbacks) {
-    return new LocationServicesHelper(activity, locationCallbacks);
-  }
-
-  @ActivityScope
-  @Provides LocationCallbacks providesLocationCallbacks(ZimHostActivity activity) {
-    return activity;
-  }
 }
 

app/src/main/java/org/kiwix/kiwixmobile/wifi_hotspot/HotspotService.java

@@ -2,9 +2,7 @@ package org.kiwix.kiwixmobile.wifi_hotspot;
 
 import android.app.Service;
 import android.content.Intent;
-import android.net.wifi.WifiConfiguration;
 import android.os.Binder;
-import android.os.Build;
 import android.os.IBinder;
 import android.widget.Toast;
 import androidx.annotation.NonNull;
@@ -12,6 +10,7 @@ import androidx.annotation.Nullable;
 import javax.inject.Inject;
 import org.kiwix.kiwixmobile.KiwixApplication;
 import org.kiwix.kiwixmobile.R;
+import org.kiwix.kiwixmobile.extensions.ContextExtensionsKt;
 import org.kiwix.kiwixmobile.utils.ServerUtils;
 import org.kiwix.kiwixmobile.webserver.WebServerHelper;
 import org.kiwix.kiwixmobile.webserver.ZimHostCallbacks;
@@ -24,10 +23,9 @@ import static org.kiwix.kiwixmobile.wifi_hotspot.HotspotNotificationManager.HOTS
  * Created by Adeel Zafar on 07/01/2019.
  */
 
-public class HotspotService extends Service implements HotspotStateListener, IpAddressCallbacks {
+public class HotspotService extends Service
+  implements IpAddressCallbacks, HotspotStateReceiver.Callback {
 
-  public static final String ACTION_TOGGLE_HOTSPOT = "toggle_hotspot";
-  public static final String ACTION_LOCATION_ACCESS_GRANTED = "location_access_granted";
   public static final String ACTION_START_SERVER = "start_server";
   public static final String ACTION_STOP_SERVER = "stop_server";
   public static final String ACTION_CHECK_IP_ADDRESS = "check_ip_address";
@@ -38,9 +36,9 @@ public class HotspotService extends Service implements HotspotStateListener, IpA
   @Inject
   WebServerHelper webServerHelper;
   @Inject
-  WifiHotspotManager hotspotManager;
-  @Inject
   HotspotNotificationManager hotspotNotificationManager;
+  @Inject
+  HotspotStateReceiver hotspotStateReceiver;
 
   @Override public void onCreate() {
     KiwixApplication.getApplicationComponent()
@@ -49,50 +47,27 @@ public class HotspotService extends Service implements HotspotStateListener, IpA
       .build()
       .inject(this);
     super.onCreate();
+    ContextExtensionsKt.registerReceiver(this, hotspotStateReceiver);
+  }
+
+  @Override public void onDestroy() {
+    unregisterReceiver(hotspotStateReceiver);
+    super.onDestroy();
   }
 
   @Override public int onStartCommand(@NonNull Intent intent, int flags, int startId) {
     switch (intent.getAction()) {
 
-      case ACTION_TOGGLE_HOTSPOT:
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-          if (hotspotManager.isHotspotStarted()) {
-            stopHotspotAndDismissNotification();
-          } else {
-            if (zimHostCallbacks != null) {
-              zimHostCallbacks.requestLocationAccess();
-            }
-          }
-        }
-        break;
-
-      case ACTION_LOCATION_ACCESS_GRANTED:
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-          hotspotManager.turnOnHotspot();
-        }
-        break;
-
       case ACTION_START_SERVER:
         if (webServerHelper.startServerHelper(
           intent.getStringArrayListExtra(SELECTED_ZIM_PATHS_KEY))) {
-          if (zimHostCallbacks != null) {
           zimHostCallbacks.onServerStarted(ServerUtils.getSocketAddress());
-          }
-          if (Build.VERSION.SDK_INT < Build.VERSION_CODES.O) {
           startForegroundNotificationHelper();
-          }
           Toast.makeText(this, R.string.server_started__successfully_toast_message,
             Toast.LENGTH_SHORT).show();
         } else {
-          if (zimHostCallbacks != null) {
           zimHostCallbacks.onServerFailedToStart();
         }
-          if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            stopForeground(true);
-            stopSelf();
-            hotspotNotificationManager.dismissNotification();
-          }
-        }
 
         break;
 
@@ -116,9 +91,6 @@ public class HotspotService extends Service implements HotspotStateListener, IpA
 
   //Dismiss notification and turn off hotspot for devices>=O
   private void stopHotspotAndDismissNotification() {
-    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-      hotspotManager.turnOffHotspot();
-    } else {
     webServerHelper.stopAndroidWebServer();
     if (zimHostCallbacks != null) {
       zimHostCallbacks.onServerStopped();
@@ -127,7 +99,6 @@ public class HotspotService extends Service implements HotspotStateListener, IpA
     stopSelf();
     hotspotNotificationManager.dismissNotification();
   }
-  }
 
   public void registerCallBack(@Nullable ZimHostCallbacks myCallback) {
     zimHostCallbacks = myCallback;
@@ -138,29 +109,6 @@ public class HotspotService extends Service implements HotspotStateListener, IpA
       hotspotNotificationManager.buildForegroundNotification());
   }
 
-  @Override public void onHotspotTurnedOn(@NonNull WifiConfiguration wifiConfiguration) {
-    startForegroundNotificationHelper();
-    if (zimHostCallbacks != null) {
-      zimHostCallbacks.onHotspotTurnedOn(wifiConfiguration);
-    }
-  }
-
-  @Override public void onHotspotFailedToStart() {
-    if (zimHostCallbacks != null) {
-      zimHostCallbacks.onHotspotFailedToStart();
-    }
-  }
-
-  @Override public void onHotspotStopped() {
-    webServerHelper.stopAndroidWebServer();
-    if (zimHostCallbacks != null) {
-      zimHostCallbacks.onServerStopped();
-    }
-    stopForeground(true);
-    stopSelf();
-    hotspotNotificationManager.dismissNotification();
-  }
-
   @Override public void onIpAddressValid() {
     if (zimHostCallbacks != null) {
       zimHostCallbacks.onIpAddressValid();
@@ -173,6 +121,10 @@ public class HotspotService extends Service implements HotspotStateListener, IpA
     }
   }
 
+  @Override public void onHotspotDisabled() {
+    stopHotspotAndDismissNotification();
+  }
+
   public class HotspotBinder extends Binder {
 
     @NonNull public HotspotService getService() {

app/src/main/java/org/kiwix/kiwixmobile/wifi_hotspot/HotspotStateListener.java

@@ -1,12 +0,0 @@
-package org.kiwix.kiwixmobile.wifi_hotspot;
-
-import android.net.wifi.WifiConfiguration;
-import androidx.annotation.NonNull;
-
-public interface HotspotStateListener {
-  void onHotspotTurnedOn(@NonNull WifiConfiguration wifiConfiguration);
-
-  void onHotspotFailedToStart();
-
-  void onHotspotStopped();
-}

app/src/main/java/org/kiwix/kiwixmobile/wifi_hotspot/HotspotStateReceiver.kt

@@ -0,0 +1,63 @@
+/*
+ * Kiwix Android
+ * Copyright (C) 2018  Kiwix <android.kiwix.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.kiwix.kiwixmobile.wifi_hotspot
+
+import android.content.Context
+import android.content.Intent
+import org.kiwix.kiwixmobile.wifi_hotspot.HotspotStateReceiver.HotspotState.DISABLED
+import org.kiwix.kiwixmobile.zim_manager.BaseBroadcastReceiver
+import javax.inject.Inject
+
+const val EXTRA_WIFI_AP_STATE = "wifi_state"
+const val ACTION_WIFI_AP_STATE = "android.net.wifi.WIFI_AP_STATE_CHANGED"
+
+const val WIFI_AP_STATE_DISABLING = 10
+const val WIFI_AP_STATE_DISABLED = 11
+const val WIFI_AP_STATE_ENABLING = 12
+const val WIFI_AP_STATE_ENABLED = 13
+const val WIFI_AP_STATE_FAILED = 14
+
+class HotspotStateReceiver @Inject constructor(val callback: Callback) : BaseBroadcastReceiver() {
+  override val action: String = ACTION_WIFI_AP_STATE
+
+  override fun onIntentWithActionReceived(context: Context, intent: Intent) {
+    if (DISABLED == hotspotState(intent)) {
+      callback.onHotspotDisabled()
+    }
+  }
+
+  private fun hotspotState(intent: Intent) =
+    HotspotState.from(intent.getIntExtra(EXTRA_WIFI_AP_STATE, -1))
+
+  interface Callback {
+    fun onHotspotDisabled()
+  }
+
+  private enum class HotspotState(val state: Int) {
+
+    DISABLING(WIFI_AP_STATE_DISABLING),
+    DISABLED(WIFI_AP_STATE_DISABLED),
+    ENABLING(WIFI_AP_STATE_ENABLING),
+    ENABLED(WIFI_AP_STATE_ENABLED),
+    FAILED(WIFI_AP_STATE_FAILED);
+
+    companion object {
+      fun from(state: Int) = HotspotState.values().firstOrNull { state == it.state }
+    }
+  }
+}

app/src/main/java/org/kiwix/kiwixmobile/wifi_hotspot/WifiHotspotManager.java

@@ -1,86 +0,0 @@
-package org.kiwix.kiwixmobile.wifi_hotspot;
-
-import android.net.wifi.WifiConfiguration;
-import android.net.wifi.WifiManager;
-import android.os.Build;
-import android.os.Handler;
-import android.util.Log;
-import androidx.annotation.NonNull;
-import androidx.annotation.RequiresApi;
-import javax.inject.Inject;
-
-/**
- * WifiHotstopManager class makes use of the Android's WifiManager and WifiConfiguration class
- * to implement the wifi hotspot feature.
- * Created by Adeel Zafar on 28/5/2019.
- */
-
-public class WifiHotspotManager {
-  private static final String TAG = "WifiHotspotManager";
-  private WifiManager wifiManager;
-  private WifiManager.LocalOnlyHotspotReservation hotspotReservation;
-  private HotspotStateListener hotspotStateListener;
-
-  @Inject
-  public WifiHotspotManager(@NonNull WifiManager wifiManager,
-    @NonNull HotspotStateListener hotspotStateListener) {
-    this.wifiManager = wifiManager;
-    this.hotspotStateListener = hotspotStateListener;
-  }
-
-  //Workaround to turn on hotspot for Oreo versions
-  @RequiresApi(api = Build.VERSION_CODES.O)
-  public void turnOnHotspot() {
-    wifiManager.startLocalOnlyHotspot(new WifiManager.LocalOnlyHotspotCallback() {
-
-      @Override
-      public void onStarted(WifiManager.LocalOnlyHotspotReservation reservation) {
-        super.onStarted(reservation);
-        hotspotReservation = reservation;
-        WifiConfiguration currentConfig = hotspotReservation.getWifiConfiguration();
-
-        printCurrentConfig(currentConfig);
-        hotspotStateListener.onHotspotTurnedOn(currentConfig);
-        Log.v(TAG, "Local Hotspot Started");
-      }
-
-      @Override
-      public void onStopped() {
-        super.onStopped();
-        hotspotStateListener.onHotspotStopped();
-        Log.v(TAG, "Local Hotspot Stopped");
-      }
-
-      @Override
-      public void onFailed(int reason) {
-        super.onFailed(reason);
-        hotspotStateListener.onHotspotFailedToStart();
-        Log.v(TAG, "Local Hotspot failed to start");
-      }
-    }, new Handler());
-  }
-
-  //Workaround to turn off hotspot for Oreo versions
-  @RequiresApi(api = Build.VERSION_CODES.O)
-  public void turnOffHotspot() {
-    if (hotspotReservation != null) {
-      hotspotReservation.close();
-      hotspotReservation = null;
-      hotspotStateListener.onHotspotStopped();
-      Log.v(TAG, "Turned off hotspot");
-    }
-  }
-
-  //This method checks the state of the hostpot for devices>=Oreo
-  @RequiresApi(api = Build.VERSION_CODES.O)
-  public boolean isHotspotStarted() {
-    return hotspotReservation != null;
-  }
-
-  private void printCurrentConfig(WifiConfiguration wifiConfiguration) {
-    Log.v(TAG, "THE PASSWORD IS: "
-      + wifiConfiguration.preSharedKey
-      + " \n SSID is : "
-      + wifiConfiguration.SSID);
-  }
-}