How to Change Android Title Bar or Toolbar or ActionBar Text Programmatically in Android Studio - Tutorial
Android Title Bar or ActionBar or Toolbar is the header of any screen in an App. We usually keep fixed title names to every Activity. Some times, it is necessary to change the title-text dynamically at runtime inside the Java code. Let us change the toolbar-text programmatically.
You can also check Android GridLayout with equal-width columns for easy implementation.