Added Android Auto notification support.

Signed-off-by: Jens Zalzala <jens@shakingearthdigital.com>

Author: anakin78z

SETUP.md

@@ -106,6 +106,19 @@ This requires a working Internet connection.
 
 The generated APK file is saved in ```app/build/outputs/apk``` as ```app-generic-debug.apk```.
 
+### Working with Android Auto
+
+To test [notification extension to Android Auto](https://developer.android.com/training/cars/communication/notification-messaging), Developer settings and Unknown sources need to be enabled in 
+the Android Auto settings: 
+
+1. Open the Settings app on your device
+2. Search for Android Auto, or click on Connected Devices > Android Auto
+3. Scroll all the way down to Version, and click it 10 times to enable Developer settings
+4. Click the 3 dots in the top right and select Developer settings
+5. Enable Unknown sources
+
+You can now receive notifications on Android Auto from a Nextcloud Talk development build.
+
 ### App flavours
 
 The app is currently equipped to be built with three flavours:

app/src/main/AndroidManifest.xml

@@ -99,7 +99,11 @@
 
         <meta-data
             android:name="android.max_aspect"
-            android:value="10" />
+            android:value="10"/>
+
+        <meta-data
+            android:name="com.google.android.gms.car.application"
+            android:resource="@xml/automotive_app_desc"/>
 
         <activity
             android:name=".activities.MainActivity"
@@ -299,11 +303,21 @@
             </intent-filter>
         </receiver>
 
-        <receiver android:name=".receivers.DirectReplyReceiver" />
-        <receiver android:name=".receivers.MarkAsReadReceiver" />
-        <receiver android:name=".receivers.DeclineCallReceiver" android:exported="false" />
-        <receiver android:name=".receivers.DismissRecordingAvailableReceiver" />
-        <receiver android:name=".receivers.ShareRecordingToChatReceiver" />
+        <receiver
+            android:name=".receivers.DirectReplyReceiver"
+            android:exported="false" />
+        <receiver
+            android:name=".receivers.MarkAsReadReceiver"
+            android:exported="false" />
+        <receiver
+            android:name=".receivers.DismissRecordingAvailableReceiver"
+            android:exported="false" />
+        <receiver
+            android:name=".receivers.ShareRecordingToChatReceiver"
+            android:exported="false" />
+        <receiver
+            android:name=".receivers.DeclineCallReceiver"
+            android:exported="false" />
 
         <service
             android:name=".utils.SyncService"

app/src/main/java/com/nextcloud/talk/jobs/NotificationWorker.kt

@@ -762,6 +762,10 @@ class NotificationWorker(context: Context, workerParams: WorkerParameters) : Wor
     }
 
     private fun styleImageNotification(notificationBuilder: NotificationCompat.Builder) {
+        val notificationUser = pushMessage.notificationUser
+        val senderName = notificationUser?.name ?: ""
+        val conversationTitle = pushMessage.subject.ifEmpty { senderName }
+
         val bitmap = loadImageBitmapSync(imagePreviewUrl!!)
         if (bitmap != null) {
             notificationBuilder
@@ -770,6 +774,7 @@ class NotificationWorker(context: Context, workerParams: WorkerParameters) : Wor
                     NotificationCompat.BigPictureStyle()
                         .bigPicture(bitmap)
                         .bigLargeIcon(null as Bitmap?)
+                        .setBigContentTitle(conversationTitle)
                 )
         }
     }
@@ -821,10 +826,19 @@ class NotificationWorker(context: Context, workerParams: WorkerParameters) : Wor
             }
             person.setIcon(loadAvatarSync(avatarUrl, context!!))
         }
-        notificationBuilder.setStyle(getStyle(person.build(), style))
+        val deviceUser = Person.Builder()
+            .setKey(signatureVerification.user!!.id.toString() + "@" + signatureVerification.user!!.userId)
+            .setName(signatureVerification.user!!.displayName ?: signatureVerification.user!!.userId ?: "You")
+            .build()
+        notificationBuilder.setStyle(getStyle(deviceUser, person.build(), style))
     }
 
-    private fun buildIntentForAction(cls: Class<*>, systemNotificationId: Int, messageId: Int): PendingIntent {
+    private fun buildIntentForAction(
+        cls: Class<*>,
+        systemNotificationId: Int,
+        messageId: Int,
+        mutable: Boolean = true
+    ): PendingIntent {
         val actualIntent = Intent(context, cls)
 
         // NOTE - systemNotificationId is an internal ID used on the device only.
@@ -835,7 +849,8 @@ class NotificationWorker(context: Context, workerParams: WorkerParameters) : Wor
         actualIntent.putExtra(KEY_MESSAGE_ID, messageId)
 
         val intentFlag: Int = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
-            PendingIntent.FLAG_MUTABLE or PendingIntent.FLAG_UPDATE_CURRENT
+            val mutabilityFlag = if (mutable) PendingIntent.FLAG_MUTABLE else PendingIntent.FLAG_IMMUTABLE
+            mutabilityFlag or PendingIntent.FLAG_UPDATE_CURRENT
         } else {
             PendingIntent.FLAG_UPDATE_CURRENT
         }
@@ -854,7 +869,8 @@ class NotificationWorker(context: Context, workerParams: WorkerParameters) : Wor
             val pendingIntent = buildIntentForAction(
                 MarkAsReadReceiver::class.java,
                 systemNotificationId,
-                messageId
+                messageId,
+                mutable = false
             )
             val markAsReadAction = NotificationCompat.Action.Builder(
                 R.drawable.ic_mark_chat_read_24px,
@@ -964,9 +980,13 @@ class NotificationWorker(context: Context, workerParams: WorkerParameters) : Wor
         notificationBuilder.addAction(shareRecordingAction)
     }
 
-    private fun getStyle(person: Person, style: NotificationCompat.MessagingStyle?): NotificationCompat.MessagingStyle {
-        val newStyle = NotificationCompat.MessagingStyle(person)
-        newStyle.conversationTitle = pushMessage.subject
+    private fun getStyle(
+        deviceUser: Person,
+        sender: Person,
+        style: NotificationCompat.MessagingStyle?
+    ): NotificationCompat.MessagingStyle {
+        val newStyle = NotificationCompat.MessagingStyle(deviceUser)
+        newStyle.conversationTitle = pushMessage.subject.ifEmpty { sender.name }
         newStyle.isGroupConversation = "one2one" != conversationType
         style?.messages?.forEach(
             Consumer { message: NotificationCompat.MessagingStyle.Message ->
@@ -979,7 +999,7 @@ class NotificationWorker(context: Context, workerParams: WorkerParameters) : Wor
                 )
             }
         )
-        newStyle.addMessage(pushMessage.text, pushMessage.timestamp, person)
+        newStyle.addMessage(pushMessage.text, pushMessage.timestamp, sender)
         return newStyle
     }
 

app/src/main/res/xml/automotive_app_desc.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Nextcloud Talk - Android Client
+  ~
+  ~ SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+  ~ SPDX-License-Identifier: GPL-3.0-or-later
+  ~ SPDX-FileCopyrightText: 2026 Jens Zalzala <jens@shakingearth.digital>
+  -->
+
+<automotiveApp>
+    <uses name="notification" />
+</automotiveApp>