Add StartHotspotManually in KiwixDialog

Add neutralMessage in KiwixDialog constructor
Refactor code in KiwixDialog, AlertDialogShower

app/src/main/java/org/kiwix/kiwixmobile/utils/AlertDialogShower.kt

@@ -3,6 +3,7 @@ package org.kiwix.kiwixmobile.utils
 import android.app.Activity
 import android.app.AlertDialog
 import org.kiwix.kiwixmobile.R
+import org.kiwix.kiwixmobile.utils.KiwixDialog.StartHotspotManually
 import javax.inject.Inject
 
 class AlertDialogShower @Inject constructor(
@@ -33,6 +34,14 @@ class AlertDialogShower @Inject constructor(
               ?.invoke()
           }
         }
+        if (dialog === StartHotspotManually) {
+          dialog.neutralMessage?.let {
+            setNeutralButton(it) { _, _ ->
+              clickListeners.getOrNull(2)
+                ?.invoke()
+            }
+          }
+        }
       }
       .show()
   }

app/src/main/java/org/kiwix/kiwixmobile/utils/KiwixDialog.kt

@@ -8,11 +8,12 @@ sealed class KiwixDialog(
   val title: Int?,
   val message: Int,
   val positiveMessage: Int,
-  val negativeMessage: Int?
+  val negativeMessage: Int?,
+  val neutralMessage: Int?
 ) {
 
   data class DeleteZim(override val args: Array<out Any>) : KiwixDialog(
-    null, R.string.delete_zim_body, R.string.delete, R.string.no
+    null, R.string.delete_zim_body, R.string.delete, R.string.no, null
   ), HasBodyFormatArgs {
     constructor(bookOnDisk: BookOnDisk) : this(arrayOf(bookOnDisk.book.title))
 
@@ -31,25 +32,30 @@ sealed class KiwixDialog(
   }
 
   object LocationPermissionRationale : KiwixDialog(
-    null, R.string.permission_rationale_location, android.R.string.yes, android.R.string.cancel
+    null,
+    R.string.permission_rationale_location,
+    android.R.string.yes,
+    android.R.string.cancel,
+    null
   )
 
   object StoragePermissionRationale : KiwixDialog(
-    null, R.string.request_storage, android.R.string.yes, android.R.string.cancel
+    null, R.string.request_storage, android.R.string.yes, android.R.string.cancel, null
   )
 
   object EnableWifiP2pServices : KiwixDialog(
-    null, R.string.request_enable_wifi, R.string.yes, android.R.string.no
+    null, R.string.request_enable_wifi, R.string.yes, android.R.string.no, null
   )
 
   object EnableLocationServices : KiwixDialog(
-    null, R.string.request_enable_location, R.string.yes, android.R.string.no
+    null, R.string.request_enable_location, R.string.yes, android.R.string.no, null
   )
 
   object TurnOffHotspotManually : KiwixDialog(
     R.string.hotspot_failed_title,
     R.string.hotspot_failed_message,
     R.string.go_to_wifi_settings_label,
+    null,
     null
   )
 
@@ -57,6 +63,7 @@ sealed class KiwixDialog(
     R.string.hotspot_turned_on,
     R.string.hotspot_details_message,
     android.R.string.ok,
+    null,
     null
   ), HasBodyFormatArgs {
     constructor(wifiConfiguration: WifiConfiguration) : this(
@@ -67,8 +74,16 @@ sealed class KiwixDialog(
     )
   }
 
+  object StartHotspotManually : KiwixDialog(
+    R.string.hotspot_dialog_title,
+    R.string.hotspot_dialog_message,
+    R.string.go_to_settings_label,
+    null,
+    R.string.hotspot_dialog_neutral_button
+  )
+
   data class FileTransferConfirmation(override val args: Array<out Any>) : KiwixDialog(
-    null, R.string.transfer_to, R.string.yes, android.R.string.cancel
+    null, R.string.transfer_to, R.string.yes, android.R.string.cancel, null
   ), HasBodyFormatArgs {
     constructor(selectedPeerDeviceName: String) : this(arrayOf(selectedPeerDeviceName))
   }
@@ -76,7 +91,7 @@ sealed class KiwixDialog(
   open class YesNoDialog(
     title: Int,
     message: Int
-  ) : KiwixDialog(title, message, R.string.yes, R.string.no) {
+  ) : KiwixDialog(title, message, R.string.yes, R.string.no, null) {
     object StopDownload : YesNoDialog(
       R.string.confirm_stop_download_title, R.string.confirm_stop_download_msg
     )

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

@@ -304,25 +304,26 @@ public class ZimHostActivity extends BaseActivity implements
 
   //Advice user to turn on hotspot manually for API<26
   private void startHotspotManuallyDialog() {
-    AlertDialog.Builder builder = new AlertDialog.Builder(this, dialogStyle());
 
-    builder.setPositiveButton(getString(R.string.go_to_settings_label),
-        (dialog, id) -> launchTetheringSettingsScreen());
-
-    builder.setNeutralButton(getString(R.string.hotspot_dialog_neutral_button), (dialog, id) -> {
-
-      progressDialog =
-          ProgressDialog.show(this, getString(R.string.progress_dialog_starting_server), "",
-              true);
-      pollForValidIpAddress();
-    });
-
-    builder.setTitle(getString(R.string.hotspot_dialog_title));
-    builder.setMessage(
-        getString(R.string.hotspot_dialog_message)
+    alertDialogShower.show(KiwixDialog.StartHotspotManually.INSTANCE,
+        new Function0<Unit>() {
+          @Override public Unit invoke() {
+            launchTetheringSettingsScreen();
+            return Unit.INSTANCE;
+          }
+        },
+        null,
+        new Function0<Unit>() {
+          @Override public Unit invoke() {
+            progressDialog =
+                ProgressDialog.show(ZimHostActivity.this,
+                    getString(R.string.progress_dialog_starting_server), "",
+                    true);
+            pollForValidIpAddress();
+            return Unit.INSTANCE;
+          }
+        }
     );
-    AlertDialog dialog = builder.create();
-    dialog.show();
   }
 
   //Keeps checking if hotspot has been turned using the ip address with an interval of 1 sec