linphone-android/app/src/main/res/layout/call_incoming_actions.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">

    <data>
        <import type="android.view.View" />
        <variable
            name="viewModel"
            type="org.linphone.ui.call.viewmodel.CurrentCallViewModel" />
    </data>

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/shape_call_bottom_sheet_background"
        android:paddingTop="15dp"
        android:paddingBottom="15dp">

        <ImageView
            android:id="@+id/hang_up"
            android:layout_width="wrap_content"
            android:layout_height="@dimen/call_button_size"
            android:layout_marginEnd="30dp"
            android:background="@drawable/squircle_red_button_background"
            android:onClick="@{() -> viewModel.hangUp()}"
            android:paddingStart="30dp"
            android:paddingTop="15dp"
            android:paddingEnd="30dp"
            android:paddingBottom="15dp"
            android:src="@drawable/phone_disconnect"
            android:contentDescription="@string/content_description_hang_up_call"
            app:layout_constraintHorizontal_chainStyle="packed"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toStartOf="@id/answer_call"
            app:layout_constraintStart_toStartOf="parent"
            app:tint="@color/white" />

        <ImageView
            android:id="@+id/answer_call"
            android:layout_width="wrap_content"
            android:layout_height="@dimen/call_button_size"
            android:background="@drawable/squircle_green_button_background"
            android:onClick="@{() -> viewModel.answer()}"
            android:paddingStart="30dp"
            android:paddingTop="15dp"
            android:paddingEnd="30dp"
            android:paddingBottom="15dp"
            android:src="@drawable/phone"
            android:contentDescription="@string/content_description_answer_call"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@id/hang_up"
            app:tint="@color/white" />

    </androidx.constraintlayout.widget.ConstraintLayout>

</layout>