Hide default text for android switch Button

For lower version, to hide the text use

 <Switch
            android:layout_width="100dp"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="7dp"
            android:textOff=""
            android:textOn=""
            android:background="@drawable/offbuttonbg"
            android:textAppearance="@style/SwitchTextAppearance"
            android:thumb="@drawable/switchselector" />