fix(telefon): ongoing-call notification crashed the InCallService; 0.1.2

CallStyle.forOngoingCall is only allowed with a foreground service or a full-screen intent and
throws otherwise. The crash on every outgoing call made Telecom fall back to the system phone app.
The call path now logs failures instead of crashing.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

telefon/app/build.gradle.kts

@@ -16,8 +16,8 @@ android {
         applicationId = "app.telefon"
         minSdk = 29
         targetSdk = 36
-        versionCode = 1
-        versionName = "0.1.0"
+        versionCode = 3
+        versionName = "0.1.2"
     }
 
     // Release key lives outside the repo; without it, release builds fall back to the debug key (local only).

telefon/app/src/main/java/app/telefon/MainActivity.kt

@@ -102,14 +102,36 @@ private fun PhoneApp(dialRequest: String?, onDialHandled: () -> Unit) {
     val roleLauncher = rememberLauncherForActivityResult(ActivityResultContracts.StartActivityForResult()) {
         isDefault = role.isRoleHeld(RoleManager.ROLE_DIALER); granted = hasCore(ctx)
     }
+    var askedRole by rememberSaveable { mutableStateOf(false) }
+    // first start: ask for the role right away; the dialog grants the phone permissions too
     LaunchedEffect(Unit) {
+        if (!isDefault && !askedRole && role.isRoleAvailable(RoleManager.ROLE_DIALER)) {
+            askedRole = true
+            roleLauncher.launch(role.createRequestRoleIntent(RoleManager.ROLE_DIALER))
+            return@LaunchedEffect
+        }
         if (!granted) perms.launch(arrayOf(Manifest.permission.READ_CALL_LOG, Manifest.permission.READ_CONTACTS, Manifest.permission.CALL_PHONE,
             Manifest.permission.READ_PHONE_STATE, Manifest.permission.POST_NOTIFICATIONS))
     }
 
     val log by remember(granted) { Contacts.callLog(ctx) }.collectAsState(initial = emptyList())
     val people by remember(granted) { Contacts.people(ctx) }.collectAsState(initial = emptyList())
-    val call: (String) -> Unit = { n -> placeCall(ctx, n) }
+    var pendingNumber by remember { mutableStateOf<String?>(null) }
+    // without the role Android shows the call in the system phone app: say so instead of jumping away
+    val call: (String) -> Unit = { n -> if (isDefault) placeCall(ctx, n) else pendingNumber = n }
+    pendingNumber?.let { n ->
+        androidx.compose.material3.AlertDialog(
+            onDismissRequest = { pendingNumber = null },
+            title = { Text(stringResource(R.string.default_title)) },
+            text = { Text(stringResource(R.string.not_default_call)) },
+            confirmButton = {
+                androidx.compose.material3.TextButton(onClick = { pendingNumber = null; roleLauncher.launch(role.createRequestRoleIntent(RoleManager.ROLE_DIALER)) }) {
+                    Text(stringResource(R.string.make_default))
+                }
+            },
+            dismissButton = { androidx.compose.material3.TextButton(onClick = { pendingNumber = null; placeCall(ctx, n) }) { Text(stringResource(R.string.call_anyway)) } },
+        )
+    }
 
     screen?.let { s ->
         BackHandler { screen = null }

telefon/app/src/main/java/app/telefon/call/CallService.kt

@@ -25,7 +25,9 @@ class CallService : InCallService() {
 
     override fun onCallAdded(call: Call) {
         CallManager.added(call)
-        if (call.details.state == Call.STATE_RINGING) showIncoming(call) else startActivity(CallActivity.intent(this))
+        // a crash here would make Telecom switch to the system phone app, so failures are logged, not thrown
+        runCatching { if (call.details.state == Call.STATE_RINGING) showIncoming(call) else startActivity(CallActivity.intent(this)) }
+            .onFailure { android.util.Log.e("Telefon", "onCallAdded", it); runCatching { startActivity(CallActivity.intent(this)) } }
     }
 
     override fun onCallRemoved(call: Call) = CallManager.removed(call)
@@ -36,7 +38,9 @@ class CallService : InCallService() {
         updateProximity(audioState.route)
     }
 
-    internal fun onCallsChanged(calls: List<CallUi>) {
+    internal fun onCallsChanged(calls: List<CallUi>) = runCatching { updateNotification(calls) }.onFailure { android.util.Log.e("Telefon", "notification", it) }
+
+    private fun updateNotification(calls: List<CallUi>) {
         val nm = getSystemService(NotificationManager::class.java)
         val ringing = calls.firstOrNull { it.phase == Phase.RINGING }
         val current = calls.firstOrNull { it.phase != Phase.RINGING && it.phase != Phase.DISCONNECTED }
@@ -64,10 +68,11 @@ class CallService : InCallService() {
 
     private fun ongoing(c: CallUi): Notification {
         val name = Contacts.lookupName(this, c.number) ?: c.number
-        val person = Person.Builder().setName(name).build()
+        // not CallStyle: that style is only allowed with a foreground service or a full-screen intent
+        // and throws otherwise, which made Telecom fall back to the system phone app
         return NotificationCompat.Builder(this, CH_ONGOING).setSmallIcon(R.drawable.ic_stat_call)
-            .setContentTitle(name).setContentIntent(CallActivity.pending(this)).setOngoing(true).setSilent(true)
-            .setStyle(NotificationCompat.CallStyle.forOngoingCall(person, action(ACTION_HANGUP)))
+            .setContentTitle(name).setContentText(getString(R.string.ongoing_call)).setContentIntent(CallActivity.pending(this)).setOngoing(true).setSilent(true)
+            .addAction(0, getString(R.string.hang_up), action(ACTION_HANGUP))
             .apply { c.connectedAt?.let { setUsesChronometer(true).setWhen(it).setShowWhen(true) } }
             .setCategory(NotificationCompat.CATEGORY_CALL).build()
     }

telefon/app/src/main/res/values/strings.xml

@@ -36,6 +36,9 @@
     <string name="default_title">Als Standard-Telefon-App festlegen</string>
     <string name="default_text">Nur dann kann diese App Anrufe annehmen und anzeigen. Du kannst das jederzeit in den Android-Einstellungen ändern.</string>
 
+    <string name="not_default_call">Diese App ist noch nicht deine Standard-Telefon-App. Android zeigt den Anruf deshalb in der System-Telefon-App an.</string>
+    <string name="make_default">Als Standard festlegen</string>
+    <string name="call_anyway">Trotzdem anrufen</string>
     <string name="incoming_call">Eingehender Anruf</string>
     <string name="calling">Wird angerufen …</string>
     <string name="on_hold">Gehalten</string>
@@ -54,6 +57,7 @@
     <string name="resume">Fortsetzen</string>
     <string name="bluetooth">Bluetooth</string>
     <string name="hang_up">Auflegen</string>
+    <string name="ongoing_call">Laufender Anruf</string>
     <string name="ch_incoming">Eingehende Anrufe</string>
     <string name="ch_ongoing">Laufende Anrufe</string>
 </resources>