Check null for getPhoneAccount()

A phone account can be removed after calling getCallCapablePhoneAccounts(), so subsequent getPhoneAccount() can be null.

Other usages already has the null check.

Bug: 75598828
Test: N/A testing this involves getPhoneAccount() returning null on the nth call, which requires replacing the shadows with a mock and is highly coupled with the implementation. The is an edge case and is not worth the effort and brittleness it will cause.
PiperOrigin-RevId: 189644833
Change-Id: Ie92dda2537befb5936ad734954b4eaf75964f465

2 files changed, 7 insertions, 3 deletions

diff --git a/java/com/android/dialer/app/calllog/LegacyVoicemailNotifier.java b/java/com/android/dialer/app/calllog/LegacyVoicemailNotifier.java
index 7b1536b37..f37d52d68 100644
--- a/java/com/android/dialer/app/calllog/LegacyVoicemailNotifier.java
+++ b/java/com/android/dialer/app/calllog/LegacyVoicemailNotifier.java
@@ -141,13 +141,14 @@ public final class LegacyVoicemailNotifier {
     if (TelecomUtil.getCallCapablePhoneAccounts(context).size() > 1) {
       TelecomManager telecomManager = context.getSystemService(TelecomManager.class);
       PhoneAccount phoneAccount = telecomManager.getPhoneAccount(handle);
-      return phoneAccount.getShortDescription().toString();
-    } else {
+      if (phoneAccount != null) {
+        return phoneAccount.getShortDescription().toString();
+      }
+    }
       return String.format(
           context.getString(R.string.notification_voicemail_text_format),
           PhoneNumberHelper.formatNumber(
               context, voicemailNumber, GeoUtil.getCurrentCountryIso(context)));
-    }
   }
 
   public static void cancelNotification(
diff --git a/java/com/android/dialer/app/settings/DialerSettingsActivity.java b/java/com/android/dialer/app/settings/DialerSettingsActivity.java
index 24e5fe8aa..09fe03ef5 100644
--- a/java/com/android/dialer/app/settings/DialerSettingsActivity.java
+++ b/java/com/android/dialer/app/settings/DialerSettingsActivity.java
@@ -241,6 +241,9 @@ public class DialerSettingsActivity extends AppCompatPreferenceActivity {
     PhoneAccountHandle result = null;
     for (PhoneAccountHandle phoneAccountHandle : telecomManager.getCallCapablePhoneAccounts()) {
       PhoneAccount phoneAccount = telecomManager.getPhoneAccount(phoneAccountHandle);
+      if (phoneAccount == null) {
+        continue;
+      }
       if (phoneAccount.hasCapabilities(PhoneAccount.CAPABILITY_SIM_SUBSCRIPTION)) {
         LogUtil.i(
             "DialerSettingsActivity.getSoleSimAccount", phoneAccountHandle + " is a SIM account");