Quelle  activity_sessions_intro.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout 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:id="@+id/parent_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

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

    <ScrollView
        android:id="@+id/scroll_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="?android:attr/colorBackground"
        android:clipToPadding="false"
        android:scrollbarAlwaysDrawVerticalTrack="true"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:paddingHorizontal="@dimen/grid_unit_x2"
            android:paddingVertical="@dimen/grid_unit_x4">

            <TextView
                android:id="@+id/webclient_welcome"
                style="@style/Threema.TextAppearance.Title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:gravity="center_horizontal"
                android:text="@string/webclient_welcome_title" />

            <TextView
                android:id="@+id/webclient_explain"
                style="@style/Threema.TextAppearance.BodyLarge"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="@dimen/grid_unit_x3"
                android:gravity="center_horizontal"
                android:text="@string/webclient_welcome_explain" />

            <TextView
                android:id="@+id/webclient_link"
                style="@style/Threema.TextAppearance.BodyLarge"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="@dimen/grid_unit_x3"
                android:clickable="true"
                android:focusable="true"
                android:gravity="center_horizontal"
                android:linksClickable="true"
                android:text=""
                tools:text="https://threema.com/threema-web" />

            <com.google.android.material.button.MaterialButton
                android:id="@+id/launch_button"
                style="@style/Threema.MaterialButton.Action"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:layout_marginTop="@dimen/grid_unit_x3"
                android:text="@string/webclient_launch" />

        </LinearLayout>

    </ScrollView>

</androidx.coordinatorlayout.widget.CoordinatorLayout>