anotherim/src/main/res/layout/dialog_block_contact.xml

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:paddingBottom="?attr/dialog_vertical_padding"
        android:paddingLeft="?attr/dialog_horizontal_padding"
        android:paddingRight="?attr/dialog_horizontal_padding"
        android:paddingTop="?attr/dialog_vertical_padding">

        <TextView
            android:id="@+id/text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="@style/TextAppearance.Conversations.Body1"/>

        <CheckBox
            android:id="@+id/report_spam"
            style="@style/Widget.Conversations.CheckBox"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:text="@string/report_jid_as_spammer"/>

    </LinearLayout>
</layout>