Getting the textview of the TabLayout's tab

Question

I want to programmatically change a tab's textview. Is there any way to do this?

There are answers only concerning the old TabHost view, I am using the TabLayout used by Google's Material Design library using android.support.design.widget.TabLayout.

For TabHost: How to add padding to a tabs label?

Answer 1

With a given tab:

 int wantedTabIndex = 0;
 TextView tv = (TextView)(((LinearLayout)((LinearLayout)mTabLayout.getChildAt(0)).getChildAt(wantedTabIndex)).getChildAt(0));
 tv.setText("Hello world!");

Answer 2

    public static void setTextViewsCapsOff(View view) {
        if (!(view instanceof ViewGroup)) {
            return;
        }
        ViewGroup group = (ViewGroup)view;
        for (int i = 0; i < group.getChildCount(); i++) {
            View child = group.getChildAt(i);
            if (child instanceof TextView) {
                ((TextView)child).setAllCaps(false);
            } else {
                setTextViewsCapsOff(child);
            }
        }
    }

Pass in your TabLayout to this recursive method. It will find any child that is a TextView and set its All Caps mode off. Avoids all the other very specific typecasting. If it does not appear to work call it later in your code. I had it in onCreate but that did not work. Called it later in code and it worked perfectly.

Affects all Tabs, not just one but I figure this is the most common usage. Not specific to TabLayout either. Can be used for any layout that contains TextViews you want to change.