From ed216fe0d9efeb834a00a1e341faa87db75af419 Mon Sep 17 00:00:00 2001
From: Stephen Paul Weber <singpolyma@singpolyma.net>
Date: Mon, 4 Apr 2022 14:03:23 -0500
Subject: [PATCH] Fix crash on Android < 23 where there is not dialler stuff

---
 .../eu/siacs/conversations/ui/ManageAccountActivity.java     | 3 +++
 src/main/java/eu/siacs/conversations/entities/Contact.java   | 5 +++++
 .../eu/siacs/conversations/services/NotificationService.java | 2 ++
 3 files changed, 10 insertions(+)

diff --git a/src/cheogram/java/eu/siacs/conversations/ui/ManageAccountActivity.java b/src/cheogram/java/eu/siacs/conversations/ui/ManageAccountActivity.java
index 0fc4757cd..3d08ac4bd 100644
--- a/src/cheogram/java/eu/siacs/conversations/ui/ManageAccountActivity.java
+++ b/src/cheogram/java/eu/siacs/conversations/ui/ManageAccountActivity.java
@@ -3,6 +3,7 @@ package eu.siacs.conversations.ui;
 import android.content.ActivityNotFoundException;
 import android.content.ComponentName;
 import android.content.Intent;
+import android.os.Build;
 import android.os.Bundle;
 import android.security.KeyChain;
 import android.security.KeyChainAliasCallback;
@@ -86,6 +87,8 @@ public class ManageAccountActivity extends XmppActivity implements OnAccountUpda
             startActivity(new Intent(android.telecom.TelecomManager.ACTION_CHANGE_PHONE_ACCOUNTS));
         });
 
+        if (Build.VERSION.SDK_INT < 23) return;
+
         outer:
         for (Account account : xmppConnectionService.getAccounts()) {
             for (Contact contact : account.getRoster().getContacts()) {
diff --git a/src/main/java/eu/siacs/conversations/entities/Contact.java b/src/main/java/eu/siacs/conversations/entities/Contact.java
index bc1c809e4..ffdd73cf3 100644
--- a/src/main/java/eu/siacs/conversations/entities/Contact.java
+++ b/src/main/java/eu/siacs/conversations/entities/Contact.java
@@ -6,6 +6,7 @@ import android.content.Context;
 import android.database.Cursor;
 import android.graphics.drawable.Icon;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Bundle;
 import android.telecom.PhoneAccount;
 import android.telecom.PhoneAccountHandle;
@@ -609,6 +610,8 @@ public class Contact implements ListItem, Blockable {
 
     // This Contact is a gateway to use for voice calls, register it with OS
     public void registerAsPhoneAccount(XmppConnectionService ctx) {
+        if (Build.VERSION.SDK_INT < 23) return;
+
         TelecomManager telecomManager = ctx.getSystemService(TelecomManager.class);
 
         PhoneAccount phoneAccount = PhoneAccount.builder(
@@ -631,6 +634,8 @@ public class Contact implements ListItem, Blockable {
 
     // Unregister any associated PSTN gateway integration
     public void unregisterAsPhoneAccount(Context ctx) {
+        if (Build.VERSION.SDK_INT < 23) return;
+
         TelecomManager telecomManager = ctx.getSystemService(TelecomManager.class);
         telecomManager.unregisterPhoneAccount(phoneAccountHandle());
     }
diff --git a/src/main/java/eu/siacs/conversations/services/NotificationService.java b/src/main/java/eu/siacs/conversations/services/NotificationService.java
index 0fdba2675..6ea28d5f9 100644
--- a/src/main/java/eu/siacs/conversations/services/NotificationService.java
+++ b/src/main/java/eu/siacs/conversations/services/NotificationService.java
@@ -429,6 +429,8 @@ public class NotificationService {
     }
 
     private synchronized boolean tryRingingWithDialerUI(final AbstractJingleConnection.Id id, final Set<Media> media) {
+        if (Build.VERSION.SDK_INT < 23) return false;
+
         if (mXmppConnectionService.checkSelfPermission(Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
             // We cannot request audio permission in Dialer UI
             // when Dialer is shown over keyguard, the user cannot even necessarily