Signal-Android/app/src/main/res/layout/conversation_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<org.thoughtcrime.securesms.components.InsetAwareConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <include layout="@layout/system_ui_guidelines" />

    <ImageView
        android:importantForAccessibility="no"
        android:id="@+id/conversation_wallpaper"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scaleType="centerCrop"/>

    <View
        android:id="@+id/conversation_wallpaper_dim"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/black"
        android:visibility="gone"
        tools:alpha="0.2f"
        tools:visibility="visible" />

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        app:layout_constraintStart_toStartOf="@id/parent_start_guideline"
        app:layout_constraintEnd_toEndOf="@id/parent_end_guideline"
        app:layout_constraintTop_toTopOf="@id/status_bar_guideline">

        <androidx.appcompat.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="@null"
            android:theme="@style/TextSecure.DarkActionBar.Conversation"
            app:contentInsetStartWithNavigation="0dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:contentInsetStart="46dp"
            tools:background="#ff007f00">

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="horizontal">

                <include layout="@layout/conversation_title_view"
                    android:layout_height="match_parent"
                    android:layout_width="0dp"
                    android:layout_weight="1"/>

                <com.google.android.material.button.MaterialButton
                    android:id="@+id/conversation_group_cal_join"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:fontFamily="sans-serif-medium"
                    android:text="@string/ConversationActivity_join"
                    android:textAllCaps="false"
                    android:visibility="gone"
                    app:backgroundTint="@color/core_white"
                    app:cornerRadius="@dimen/material_button_full_round_corner_radius"
                    app:icon="@drawable/ic_video_solid_18"
                    app:iconGravity="textStart"
                    tools:iconTint="@color/core_ultramarine"
                    tools:textColor="@color/core_ultramarine"
                    tools:visibility="visible" />

            </LinearLayout>

        </androidx.appcompat.widget.Toolbar>
    </com.google.android.material.appbar.AppBarLayout>

    <org.thoughtcrime.securesms.components.InputAwareLayout
        android:id="@+id/layout_container"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintTop_toTopOf="@id/status_bar_guideline"
        app:layout_constraintBottom_toBottomOf="@id/navigation_bar_guideline"
        app:layout_constraintStart_toStartOf="@id/parent_start_guideline"
        app:layout_constraintEnd_toEndOf="@id/parent_end_guideline">

        <LinearLayout
            android:id="@+id/conversation_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:clipChildren="false"
            android:clipToPadding="false"
            android:gravity="bottom"
            android:orientation="vertical"
            android:paddingTop="?attr/actionBarSize">

            <ViewStub
                android:id="@+id/review_banner_stub"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inflatedId="@+id/review_banner"
                android:layout="@layout/review_banner_view" />

            <ViewStub
                android:id="@+id/unverified_banner_stub"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inflatedId="@+id/unverified_banner"
                android:layout="@layout/conversation_activity_unverified_banner_stub" />

            <ViewStub
                android:id="@+id/reminder_stub"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inflatedId="@+id/reminder"
                android:layout="@layout/conversation_activity_reminderview_stub" />

            <FrameLayout
                android:layout_width="match_parent"
                android:layout_height="0dp"
                android:layout_weight="1">

                <FrameLayout
                    android:id="@+id/fragment_content"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent" />

                <ViewStub
                    android:id="@+id/conversation_mention_suggestions_stub"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout="@layout/conversation_mention_suggestions_stub"/>

            </FrameLayout>

            <ViewStub
                android:id="@+id/attachment_editor_stub"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inflatedId="@+id/attachment_editor"
                android:layout="@layout/conversation_activity_attachment_editor_stub" />

            <FrameLayout
                android:id="@+id/conversation_activity_panel_parent"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:clipChildren="false"
                android:clipToPadding="false">

                <include
                    layout="@layout/conversation_no_longer_a_member"
                    android:visibility="gone" />

                <include
                    layout="@layout/conversation_requesting_bottom_banner"
                    android:visibility="gone" />

                <include layout="@layout/conversation_input_panel" />

                <include layout="@layout/conversation_search_nav" />

                <org.thoughtcrime.securesms.messagerequests.MessageRequestsBottomView
                    android:id="@+id/conversation_activity_message_request_bottom_bar"
                    android:background="?android:attr/windowBackground"
                    android:visibility="gone"
                    android:clickable="true"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content" />

            </FrameLayout>

            <Button
                android:id="@+id/register_button"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:padding="20dp"
                android:text="@string/conversation_activity__enable_signal_messages"
                android:visibility="gone" />

            <Button
                android:id="@+id/unblock_button"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:padding="20dp"
                android:text="@string/ConversationActivity_unblock"
                android:visibility="gone" />

            <Button
                android:id="@+id/make_default_sms_button"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:padding="20dp"
                android:text="@string/conversation_activity__enable_signal_for_sms"
                android:visibility="gone" />

            <TextView
                android:id="@+id/space_left"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:background="?android:windowBackground"
                android:paddingStart="5dp"
                android:visibility="gone"
                tools:text="160/160 (1)"
                tools:visibility="visible" />

            <ViewStub
                android:id="@+id/emoji_drawer_stub"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inflatedId="@+id/emoji_drawer"
                android:layout="@layout/conversation_activity_emojidrawer_stub" />

            <ViewStub
                android:id="@+id/attachment_keyboard_stub"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inflatedId="@+id/attachment_keyboard"
                android:layout="@layout/conversation_activity_attachment_keyboard_stub" />

        </LinearLayout>

    </org.thoughtcrime.securesms.components.InputAwareLayout>

    <include layout="@layout/conversation_reaction_scrubber" />
</org.thoughtcrime.securesms.components.InsetAwareConstraintLayout>