Threema-Android-mirror/app/src/main/res/layout/activity_text_chat_bubble.xml

<?xml version="1.0" encoding="utf-8"?><!--
  ~ Copyright (c) 2020 Threema GmbH
  ~ All rights reserved.
  -->

<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:app="http://schemas.android.com/apk/res-auto"
	android:id="@+id/parent_layout"
	android:layout_width="match_parent"
	android:layout_height="match_parent">

	<com.google.android.material.appbar.AppBarLayout
		android:layout_width="match_parent"
		android:layout_height="wrap_content">

		<com.google.android.material.appbar.MaterialToolbar
			android:id="@+id/toolbar"
			style="?attr/materialToolbarStyle"
			android:layout_width="match_parent"
			android:layout_height="?attr/actionBarSize"
			app:navigationIcon="?attr/homeAsUpIndicator"
			app:menu="@menu/activity_text_chat_bubble"/>

	</com.google.android.material.appbar.AppBarLayout>

	<androidx.core.widget.NestedScrollView
		android:layout_width="match_parent"
		android:layout_height="match_parent"
		app:layout_behavior="@string/appbar_scrolling_view_behavior">

		<androidx.constraintlayout.widget.ConstraintLayout
			android:layout_width="match_parent"
			android:layout_height="wrap_content">

		<com.google.android.material.card.MaterialCardView
			android:id="@+id/card_view"
			android:layout_width="match_parent"
			android:layout_height="wrap_content"
			android:layout_margin="16dp"
			app:cardBackgroundColor="@color/light_bubble_send"
			app:cardCornerRadius="16dp"
			app:cardElevation="0dp"
			app:contentPadding="4dp"
			app:layout_constraintLeft_toLeftOf="parent"
			app:layout_constraintRight_toRightOf="parent"
			app:layout_constraintTop_toTopOf="parent">

			<androidx.constraintlayout.widget.ConstraintLayout
				android:layout_width="match_parent"
				android:layout_height="wrap_content"
				android:layout_marginLeft="12dp"
				android:layout_marginRight="12dp">

				<ch.threema.app.emojis.EmojiConversationTextView
					android:id="@+id/text_view"
					android:layout_width="match_parent"
					android:layout_height="wrap_content"
					android:linksClickable="true"
					android:textColor="?android:textColorPrimary"
					android:textSize="?attr/font_large"
					android:textIsSelectable="true"
					app:layout_constraintBottom_toTopOf="@+id/footer"
					app:layout_constraintLeft_toLeftOf="parent"
					app:layout_constraintRight_toRightOf="parent"
					app:layout_constraintTop_toTopOf="parent" />

				<FrameLayout
					android:id="@+id/footer"
					android:layout_width="match_parent"
					android:layout_height="wrap_content"
					android:layout_marginTop="8dp"
					android:layout_marginLeft="-8dp"
					android:layout_marginRight="-8dp"
					app:layout_constraintBottom_toBottomOf="parent"
					app:layout_constraintLeft_toLeftOf="parent"
					app:layout_constraintRight_toRightOf="parent">

				</FrameLayout>

			</androidx.constraintlayout.widget.ConstraintLayout>

		</com.google.android.material.card.MaterialCardView>

		<com.google.android.material.chip.Chip
			android:id="@+id/back_button"
			style="@style/Threema.Chip.VideoTranscoder"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:layout_marginRight="16dp"
			android:layout_marginBottom="8dp"
			android:layout_marginTop="8dp"
			android:text="@string/back"
			app:layout_constraintTop_toBottomOf="@+id/card_view"
			app:layout_constraintRight_toRightOf="parent"
			app:layout_constraintBottom_toBottomOf="parent"/>

		</androidx.constraintlayout.widget.ConstraintLayout>

	</androidx.core.widget.NestedScrollView>

</androidx.coordinatorlayout.widget.CoordinatorLayout>