activity_adjuntar_foto.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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"
    android:orientation="vertical"
    android:padding="10dp">

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

        <ImageButton
            android:id="@+id/btnTakeImage"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="Take picture"/>

        <TextView
            android:id="@+id/tvTakeImage"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="Take picture"
            style="@style/textTitle"
            android:gravity="center"/>

    </RelativeLayout>

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

        <Button
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="Back"
            android:onClick="goBack"/>

        <Button
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:text="Save picture"
            android:onClick="saveImage"/>

    </LinearLayout>

</LinearLayout>