Well well, it was not as hard as I've thought. The answer was just in front of my eyes.
I didn't put the ListView inside de FrameLayout. The correct code will be:
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp">
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content" />
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp" />
<!-- Dishes Panel -->
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/dishSelector"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
tools:context=".MenuSelectorActivity" />
</FrameLayout>
</LinearLayout>
</TabHost>
Still rest of the code has some issues to work about, but nothing I coudln't fix with a quick look.