Implementation of fixed tabs - Stackoverflow question. Note that these classes must be placed into a package "android.support.v4.view" as ViewPager.DecorView is not public.

activity_example.xml

<?xml version="1.0" encoding="utf-8"?>

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.example.app.ui.NonSwipeableViewPager
        android:id="@+id/view_pager"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.v4.view.PagerTwoTabsStrip
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="top"
            android:orientation="horizontal"
            style="@style/LocationsTabViewPagerIndicator" />

    </com.example.app.ui.NonSwipeableViewPager>

</FrameLayout>

PagerTwoTabsStrip.java

/**
 * Subclass of {@link PagerTwoTitlesStrip} and so implementation of a {@link android.widget.LinearLayout}
 * used as a {@link android.support.v4.view.ViewPager} indicator. This view holds two {@link android.widget.TextView}s, each being
 * the title of the two pages. The title of the 'current' tab is underlined by a tab indicator.
 *
 * <p>Inspired by Google's {@link PagerTabStrip}</p>
 */
public class PagerTwoTabsStrip extends PagerTwoTitlesStrip {

    @SuppressWarnings("unused")
    private static final String LOG_TAG = PagerTwoTabsStrip.class.getName();

    private static final int INDICATOR_HEIGHT = 4; // dp

    private final Paint tabPaint = new Paint();

    private int indicatorHeight;

    public PagerTwoTabsStrip(Context context) {
        this(context, null);
    }

    public PagerTwoTabsStrip(Context context, AttributeSet attrs) {
        super(context, attrs);

        // Note: this follows the rules for Resources#getDimensionPixelOffset/Size:
        // sizes round up, offsets round down.
        final float density = context.getResources().getDisplayMetrics().density;

        indicatorHeight = (int) (INDICATOR_HEIGHT * density + 0.5f);

        tabPaint.setColor(getResources().getColor(R.color.white));

        setWillNotDraw(false);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        final int bottom = getHeight();
        final int left = activeTabTextView.getLeft();
        final int right = activeTabTextView.getRight();
        final int top = bottom - indicatorHeight;

        canvas.drawRect(left, top, right, bottom, tabPaint);
    }

}

PagerTwoTitlesStrip.java

/**
 * Implementation of a {@link android.widget.LinearLayout} used as a {@link android.support.v4.view.ViewPager} indicator.
 * This view holds two {@link android.widget.TextView}s, each being the title of the two pages.
 *
 * <p>Inspired by Google's {@link PagerTitleStrip}</p>
 */
public class PagerTwoTitlesStrip extends LinearLayout implements ViewPager.Decor {

    @SuppressWarnings("unused")
    private static final String LOG_TAG = PagerTwoTitlesStrip.class.getName();

    private static final int[] ATTRS = new int[] {
        android.R.attr.textAppearance,
        android.R.attr.textSize,
        android.R.attr.textColor,
        android.R.attr.gravity
    };

    /**
     * The currently active (selected) tab's TextView.
     */
    TextView activeTabTextView;

    /**
     * TextView holding the text of the first tab.
     */
    private TextView tab1TextView;

    /**
     * TextView holding the text of the second tab.
     */
    private TextView tab2TextView;

    private ViewPager viewPager;

    public PagerTwoTitlesStrip(Context context) {
        super(context);
    }

    public PagerTwoTitlesStrip(Context context, AttributeSet attrs) {
        super(context, attrs);

        LayoutParams linearLayoutParams = new LayoutParams(
                LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, 1);

        // Setup tab 1
        tab1TextView = new TextView(context);
        tab1TextView.setText(R.string.view_tab_locations_mapview);
        tab1TextView.setSingleLine();
        tab1TextView.setGravity(Gravity.CENTER);
        tab1TextView.setPadding(0, 18, 0, 19);
        tab1TextView.setOnTouchListener(new TabOnTouchListener(tab1TextView, 0));

        // Setup tab 2
        tab2TextView = new TextView(context);
        tab2TextView.setText(R.string.view_tab_locations_listview);
        tab2TextView.setSingleLine();
        tab2TextView.setGravity(Gravity.CENTER);
        tab2TextView.setPadding(0, 18, 0, 19);
        tab2TextView.setOnTouchListener(new TabOnTouchListener(tab2TextView, 1));

        // Style the text
        final TypedArray attributes = context.obtainStyledAttributes(attrs, ATTRS);

        final int textAppearance = attributes.getResourceId(0, 0);
        if (textAppearance != 0) {
            tab1TextView.setTextAppearance(context, textAppearance);
            tab2TextView.setTextAppearance(context, textAppearance);
        }

        final int textSize = attributes.getDimensionPixelSize(1, 0);
        if (textSize != 0) {
            tab1TextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
            tab2TextView.setTextSize(TypedValue.COMPLEX_UNIT_PX, textSize);
        }

        if (attributes.hasValue(2)) {
            final int textColor = attributes.getColor(2, 0);
            tab1TextView.setTextColor(textColor);
            tab2TextView.setTextColor(textColor);
        }

        attributes.recycle();

        setActiveTab(tab1TextView);

        addView(tab1TextView, linearLayoutParams);
        addView(tab2TextView, linearLayoutParams);
    }
    
    private class TabOnTouchListener implements OnTouchListener {

        private int itemId;

        private TabOnTouchListener(TextView textView, int itemId) {
            this.itemId = itemId;
        }

        @Override
        public boolean onTouch(View view, MotionEvent event) {
            TextView textView = ((TextView) view);
            setActiveTab(textView);
            viewPager.setCurrentItem(itemId);
            return true;
        }
        
    }

    private void setActiveTab(TextView activeTabTextView) {
        tab1TextView.setTextColor(getResources().getColor(R.color.bsr_orange));
        tab2TextView.setTextColor(getResources().getColor(R.color.bsr_orange));

        this.activeTabTextView = activeTabTextView;

        activeTabTextView.setTextColor(getResources().getColor(R.color.white));
        invalidate();
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();

        final ViewParent parent = getParent();

        if (!(parent instanceof ViewPager)) {
            throw new IllegalStateException(
                    "PagerTwoTitlesStrip must be a direct child of a ViewPager.");
        }

        viewPager = (ViewPager) parent;
    }

}

styles.xml

...

<style name="LocationsTabViewPagerIndicator">
    <item name="android:background">@color/anthracite</item>
    <item name="android:textColor">@color/white</item>
</style>

...