Material Design Overflow Menu

CustomView.java

final ImageButton button = (ImageButton) findViewById(R.id.filter_overflow);
button.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        PopupMenu menu = new PopupMenu(context, findViewById(R.id.overflow_position));
        menu.inflate(R.menu.default);
        menu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
            @Override
            public boolean onMenuItemClick(MenuItem item) {
                // handle menu actions
                return false;
            }
        });
        menu.show();
    }
});

overflow_menu.xml

<LinearLayout
    android:layout_width="56dp"
    android:layout_height="match_parent"
    android:layout_alignParentEnd="true"
    android:layout_alignParentRight="true"
    android:orientation="vertical"
    android:weightSum="1">

    <View
        android:id="@+id/overflow_position"
        android:layout_width="56dp"
        android:layout_height="0dp"
        android:layout_weight="0" />
    
    <ImageButton
        android:id="@+id/filter_overflow"
        android:layout_width="56dp"
        android:layout_height="match_parent"
        android:background="@drawable/selectable_background"
        android:src="@drawable/ic_action_more_vert" />

</LinearLayout>

styles.xml

<style name="CustomTheme" parent="android:Theme.Holo.Light">
    <item name="android:listViewStyle">@style/ListView.CustomTheme</item>
</style>

<style name="ListView.CustomTheme" parent="@android:style/Widget.Holo.Light.ListView.DropDown">
    <item name="android:background">@android:color/white</item>
    <item name="android:divider">@android:color/transparent</item>
</style>