android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"

    android:weightSum="3">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:orientation="horizontal"
        android:weightSum="2"
        android:layout_weight="1">


        <ImageButton
            android:id="@+id/imageButton1"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/high_bald_fade_short_on_top"
            android:onClick="buttonOne_click" />

        <ImageButton
            android:id="@+id/imageButton2"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/long_messy_hair_low_fade"
            android:onClick="buttonTwo_click" />


    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:orientation="horizontal"
        android:weightSum="2">


        <ImageButton
            android:id="@+id/imageButton3"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/low_skin_fade_long_wavy_hair"
            android:onClick="buttonThree_click" />

        <ImageButton
            android:id="@+id/imageButton4"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/messy_long_hair_beard"
            android:onClick="buttonFour_click" />


    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:orientation="horizontal"
        android:weightSum="2">


        <ImageButton
            android:id="@+id/imageButton5"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/mid_fade_side_part"
            android:onClick="buttonFive_click"/>

        <ImageButton
            android:id="@+id/imageButton6"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@drawable/short_sides_medium_hair_on_top"
            android:onClick="buttonSix_click"/>


    </LinearLayout>

</