TabHost is deprecated

Question

I notice that TabHost is deprecated.

But, when I run my application in my mobile. I notice that it properly working with no error.

Why? In which android version TabHost won't work.

My android version : Lollipop/5.1, Android API level : 22.

Should I work with it? Or, I have to use ViewPager and TabLayout.

<TabHost
    android:id="@+id/tab_host"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_above="@id/rl_">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

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

            <LinearLayout
                android:id="@+id/Filters"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical">

                <include
                    layout="@layout/filters_layout"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content" />
            </LinearLayout>

            <LinearLayout
                android:id="@+id/Adjustments"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical">

            </LinearLayout>

        </FrameLayout>

        <TabWidget
            android:id="@android:id/tabs"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="#40cccccc" />

    </LinearLayout>
</TabHost>