Quelle  activity_backup_restore.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/transparent"
    android:clipToPadding="false">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <TextView
            android:id="@+id/backup_restore_title"
            style="@style/WizardTitleText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="@dimen/grid_unit_x1"
            android:gravity="center_horizontal"
            android:text="@string/menu_restore" />

        <TextView
            android:id="@+id/backup_restore_subtitle"
            style="@style/WizardSubTitleText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginVertical="@dimen/wizard_contents_padding"
            android:gravity="center_horizontal"
            android:text="@string/backup_restore_type" />

        <ch.threema.app.activities.wizard.components.WizardButtonXml
            android:id="@+id/safe_backup_compose"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/wizard_contents_padding"
            app:wizardButton_text="@string/threema_safe_backup" />

        <ch.threema.app.activities.wizard.components.WizardButtonXml
            android:id="@+id/data_backup_compose"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/wizard_contents_padding"
            app:wizardButton_text="@string/backup_data_title" />

        <ch.threema.app.activities.wizard.components.WizardButtonXml
            android:id="@+id/id_backup_compose"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/wizard_contents_padding"
            app:wizardButton_text="@string/backup_id" />

        <ch.threema.app.activities.wizard.components.WizardButtonXml
            android:id="@+id/cancel_compose"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/grid_unit_x4"
            app:wizardButton_style="wizardButton_inverse"
            app:wizardButton_text="@string/cancel" />

    </LinearLayout>

</ScrollView>