Here is my code:(main.xml -layout)

 <TabHost
        android:id="@android:id/tabhost"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >

        <LinearLayout
            android:id="@+id/linearLayout2"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:orientation="vertical"
             >

            <TabWidget
                android:id="@android:id/tabs"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content" >

            </TabWidget>

            <FrameLayout
                android:id="@android:id/tabcontent"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent">


            <MultiAutoCompleteTextView
            android:id="@+id/txtCode"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="0.25"
            android:capitalize="none"
            android:focusable="true"
            android:focusableInTouchMode="false"
            android:gravity="top|left"
            android:text="@string/strtxtCode"
            android:textSize="26dp"
            android:textStyle="bold"
            android:typeface="normal" />

            <MultiAutoCompleteTextView
            android:id="@+id/txtCodeHTML"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="0.25"
            android:capitalize="none"
            android:focusable="true"
            android:focusableInTouchMode="false"
            android:gravity="top|left"
            android:text="@string/strtxtCode2"
            android:textSize="26dp"
            android:textStyle="bold"
            android:typeface="normal" />

            </FrameLayout>
        </LinearLayout>
    </TabHost>

When I try to click(touch) the text-box, it does nothing.
What should I do in order to fix this?