Prototype to try CallRedirectionService APIs

app/src/main/AndroidManifest.xml

@@ -42,6 +42,9 @@
     <!-- Needed for auto start at boot if keep alive service is enabled -->
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
 
+    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
+    <uses-permission android:name="android.permission.READ_PHONE_NUMBERS"/>
+
     <application
         android:name=".LinphoneApplication"
         android:allowBackup="true"
@@ -208,6 +211,15 @@
             </intent-filter>
         </service>-->
 
+        <service
+            android:name=".telecom.TelecomRedirectionService"
+            android:exported="true"
+            android:permission="android.permission.BIND_CALL_REDIRECTION_SERVICE">
+            <intent-filter>
+                <action android:name="android.telecom.CallRedirectionService"/>
+            </intent-filter>
+        </service>
+
         <!-- Receivers -->
 
         <receiver android:name=".core.CorePushReceiver"

app/src/main/java/org/linphone/telecom/TelecomRedirectionService.kt

@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2010-2025 Belledonne Communications SARL.
+ *
+ * This file is part of linphone-android
+ * (see https://www.linphone.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.linphone.telecom
+
+import android.content.Context
+import android.net.Uri
+import android.os.Build
+import android.telecom.CallRedirectionService
+import android.telecom.PhoneAccount
+import android.telecom.PhoneAccountHandle
+import android.telecom.TelecomManager
+import androidx.annotation.RequiresApi
+import androidx.core.net.toUri
+import org.linphone.LinphoneApplication.Companion.coreContext
+import org.linphone.core.tools.Log
+
+@RequiresApi(Build.VERSION_CODES.Q)
+class TelecomRedirectionService : CallRedirectionService() {
+    companion object {
+        private const val TAG = "[Telecom Redirection Service]"
+    }
+
+    override fun onPlaceCall(
+        handle: Uri,
+        initialPhoneAccount: PhoneAccountHandle,
+        allowInteractiveResponse: Boolean
+    ) {
+        Log.i("$TAG onPlaceCall called with URI [$handle]")
+
+        if (handle.scheme != "tel") {
+            placeCallUnmodified()
+            return
+        }
+
+        val number = handle.toString().substring("tel:".length)
+        Log.i("$TAG Extracted number [$number] from tel: URI")
+
+        val telecomManager: TelecomManager = coreContext.context.getSystemService(Context.TELECOM_SERVICE) as TelecomManager
+        val phoneAccountHandleList: List<PhoneAccountHandle> = telecomManager.selfManagedPhoneAccounts
+        var found = false
+        for (phoneAccountHandle in phoneAccountHandleList) {
+            val phoneAccount: PhoneAccount =
+                telecomManager.getPhoneAccount(phoneAccountHandle)
+            Log.i("$TAG handle [$phoneAccountHandle] componentName = ${phoneAccountHandle.componentName}")
+            if (phoneAccountHandle.componentName.packageName == coreContext.context.packageName) {
+                Log.i("$TAG PLACING CALL!")
+                redirectCall("sip:sylvain@sip.linphone.org".toUri(), phoneAccountHandle, allowInteractiveResponse)
+                found = true
+            }
+        }
+        if (!found) {
+            Log.i("$TAG No matching phone account handle found :'(")
+            placeCallUnmodified()
+        }
+    }
+}

app/src/main/java/org/linphone/ui/main/MainActivity.kt

@@ -22,6 +22,8 @@ package org.linphone.ui.main
 import android.Manifest
 import android.annotation.SuppressLint
 import android.app.Dialog
+import android.app.role.RoleManager
+import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
 import android.graphics.Color
@@ -89,6 +91,8 @@ class MainActivity : GenericActivity() {
         private const val CHAT_FRAGMENT_ID = 3
         private const val MEETINGS_FRAGMENT_ID = 4
 
+        private const val REDIRECT_ROLE_REQUEST_CODE = 1
+
         const val ARGUMENTS_CHAT = "Chat"
         const val ARGUMENTS_CONVERSATION_ID = "ConversationId"
     }
@@ -391,6 +395,8 @@ class MainActivity : GenericActivity() {
             Log.d("$TAG savedInstanceState is null but intent isn't, handling it")
             handleIntent(intent)
         }
+
+        requestCallRedirectionRole()
     }
 
     override fun onPause() {
@@ -849,4 +855,24 @@ class MainActivity : GenericActivity() {
             }
         }
     }
+
+    private val requestPermissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestMultiplePermissions()
+    ) { isGranted ->
+
+    }
+
+    private fun requestCallRedirectionRole() {
+        requestPermissionLauncher.launch(arrayOf(Manifest.permission.READ_PHONE_STATE, Manifest.permission.READ_PHONE_NUMBERS))
+        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.Q) {
+            val roleManager: RoleManager = getSystemService(Context.ROLE_SERVICE) as RoleManager
+            // Check if the app needs to register call redirection role.
+            val shouldRequestRole = roleManager.isRoleAvailable(RoleManager.ROLE_CALL_REDIRECTION) &&
+                    !roleManager.isRoleHeld(RoleManager.ROLE_CALL_REDIRECTION)
+            if (shouldRequestRole) {
+                val intent = roleManager.createRequestRoleIntent(RoleManager.ROLE_CALL_REDIRECTION)
+                startActivityForResult(intent, REDIRECT_ROLE_REQUEST_CODE)
+            }
+        }
+    }
 }