android center align the selected tab in tablayout

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I took a look into TabLayout and tabContentStart only sets padding for its first child -> SlidingTabStrip, so I set it manually on both sides:

public class CenteringTabLayout extends TabLayout {
    public CenteringTabLayout(Context context) {
        super(context);
    }

    public CenteringTabLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CenteringTabLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);
        View firstTab = ((ViewGroup)getChildAt(0)).getChildAt(0);
        View lastTab = ((ViewGroup)getChildAt(0)).getChildAt(((ViewGroup)getChildAt(0)).getChildCount()-1);
        ViewCompat.setPaddingRelative(getChildAt(0), (getWidth()/2) - (firstTab.getWidth()/2),0,(getWidth()/2) - (lastTab.getWidth()/2),0);
    }
}

TabLayout’s first 0 index child is the SlidingTabStrip.

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