Animate tabs of Tablayout with add or removing tabs programmatically

CustomTabLayoutAnim

 private void addTab(TextView tv) {
 View v = tab.getCustomView();
        if (v instanceof TextView) {
        tv.setScaleX(0f);
        tv.setScaleY(0f);
        tv.animate()
                .scaleX(1f)
                .scaleY(1f)
                .setInterpolator(new FastOutSlowInInterpolator())
                .setDuration(450)
                .start();
                }
    }

    private void removeTab(TabLayout.Tab tab, final int index) {
        View v = tab.getCustomView();
        if (v instanceof TextView) {
            v.setScaleX(1f);
            v.setScaleY(1f);
            v.animate()
                    .scaleX(0f)
                    .scaleY(0f)
                    .setInterpolator(new FastOutSlowInInterpolator())
                    .setDuration(450)
                    .start();
        }
    }