waydroid: Show an error when Android ID is empty

components/waydroidintegrationplugin/waydroiddbusobject.cpp

@@ -453,6 +453,10 @@ void WaydroidDBusObject::refreshAndroidId()
         KAuth::ExecuteJob *executeJob = dynamic_cast<KAuth::ExecuteJob *>(job);
         if (executeJob->error() == 0) {
             m_androidId = executeJob->data()["android_id"].toString();
+
+            if (m_androidId.isEmpty()) {
+                Q_EMIT actionFailed(i18n("Android ID not found"));
+            }
         } else {
             m_androidId = "";
             qCWarning(WAYDROIDINTEGRATIONPLUGIN) << "KAuth returned an error code:" << executeJob->error();

kcms/waydroidintegration/ui/WaydroidGooglePlayProtectConfigurationPage.qml

@@ -33,6 +33,25 @@ KCM.SimpleKCM {
         text: i18n("We fetching your Android ID.\nIt can take a few seconds.")
     }
 
+    Connections {
+        target: AIP.WaydroidDBusClient
+
+        function onActionFailed(error: string): void {
+            inlineMessage.text = error
+            inlineMessage.visible = true
+            inlineMessage.type = Kirigami.MessageType.Error
+        }
+    }
+
+    Kirigami.InlineMessage {
+        id: inlineMessage
+
+        Layout.fillWidth: true
+
+        visible: false
+        showCloseButton: true
+    }
+
     ColumnLayout {
         visible: AIP.WaydroidDBusClient.androidId !== ""
         anchors.verticalCenter: parent.verticalCenter