Tablayout modification of customized tab title does not take effect

Set up custom Tab when , Called ：

 tab.setCustomView();

Modify customization Tab In the title , Need to pass through getCustomView() Get custom Tab View：

TextView textView= nViewDataBinding.tabTodo.getTabAt(index).getCustomView().findViewById(R.id.tab_item_textview);
textView.setText(title + numStr);

Reference resources ：
TabLayout Custom summary