Full-Screen Incoming Calls Notification - Only Shown Small Dialog

Description

I am trying to change the incoming calls notification to present a full screen designed view and not a simple notification at the top of the screen. I understand Android OS now blocks services from starting the activity, and when I tried to use full screen intent there was no change to the size of the notification. I also tried to create a custom view for the notification but still no change.

Steps to Reproduce

Install demp app
Get an incoming call

Code

Here's the notification creation code:

NotificationCompat.Builder(
            applicationContext, channelId
        )
            .setSmallIcon(R.drawable.centerya_logo_just_c_1024_1024)
            .setContentTitle(applicationContext.applicationInfo.name)
            .setContentText(text)
            .setContent(contentView)
            .setCategory(Notification.CATEGORY_CALL)
            .setExtras(extras)
            .setAutoCancel(true)
            .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
            .setPriority(NotificationCompat.PRIORITY_MAX)
            .addAction(R.drawable.baseline_close_24,"Decline", piRejectIntent)
            .addAction(R.drawable.baseline_check_24,"Answer", piAcceptIntent)
            .setFullScreenIntent(pendingIntent, true)

Here's the custom view:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">

    <ImageView
        android:id="@+id/caller_image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@mipmap/ic_launcher"
        android:layout_weight="1"
        android:contentDescription="caller_image" />

    <TextView
        android:id="@+id/caller_title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        tools:text="Caller"
        android:layout_weight="1"
        android:textSize="20sp"
        android:textColor="@color/black"
        />
</LinearLayout>

Here are the manifest permissions:

<uses-feature
        android:name="android.hardware.telephony"
        android:required="true" />

    <uses-permission android:name="android.permission.MANAGE_OWN_CALLS" />
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_PHONE_CALL" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
    <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
    <uses-permission android:name="android.permission.USE_FULL_SCREEN_INTENT" />

And the services in the manifest:

<service
            android:name=".services.IncomingCallNotificationService"
            android:enabled="true"
            android:exported="false" >
            <intent-filter>
                <action android:name="ACTION_ACCEPT" />
                <action android:name="ACTION_REJECT" />
            </intent-filter>
        </service>
        <service
            android:name=".services.VoiceConnectionService"
            android:exported="false"
            android:label="@string/app_name"
            android:permission="android.permission.BIND_TELECOM_CONNECTION_SERVICE" >
            <intent-filter>
                <action android:name="android.telecom.ConnectionService" />
            </intent-filter>
        </service>
        <service
            android:name=".services.VoiceFirebaseMessagingService"
            android:exported="false"
            android:foregroundServiceType="phoneCall"
            android:stopWithTask="false" >
            <intent-filter>
                <action android:name="com.google.firebase.INSTANCE_ID_EVENT" />
                <action android:name="com.google.firebase.MESSAGING_EVENT" />
            </intent-filter>
        </service>

Please advise

Expected Behavior

Get a full screen view (matching the entire phone's screen)

Actual Behavior

Getting a small notification dialog at the top of the screen

Reproduces How Often

Always

Twilio Call SID(s)

Every call, but for example CAc8270d14e35c4c29507a963baa9bcaa2

Versions

All relevant version information for the issue.

Voice Android SDK

com.twilio:voice-android:6.4.0

OS Version

Android 12

Device Model

OnePlus 7 PRo

twilio / voice-quickstart-android