What is this unusual NPN-PNP transistor pair? Clean Architecture is essential reading for every software architect, systems analyst, system designer, and software manager -- and for any programmer who aspires to these roles or is impacted by their work. The ActionBar, now known as the App Bar, is a consistent navigation element that is standard throughout modern Android applications. Android Hide Title Bar and Full Screen Example. This example demonstrates how to permanently hide the Navigation Bar in an Android activity using Kotlin. Step 2 − Add the following code to res/layout/activity_main.xml. This activity contains three tabs, generated by the SDK when I selected "Navigation type: Fixed Tabs + Swipe" on creating the project. Found insideÈ bene sottolineare come l'ActionBar non venga sempre inserita nelle applicazioni ... un riferimento all'ActionBar per poi invocarne il metodo hide(), ... Connect and share knowledge within a single location that is structured and easy to search. In many application we need to hide the title bar of Activity/Fragment Activity. Programmatically. Also add this: ( (AppCompatActivity) getActivity ()).getSupportActionBar ().hide () in the fragments before inflating layout. This is what worked for me @Johan Sanchez . You should also make sure that the action bar and other UI controls are hidden at the same time. At the moment my application consists of a single activity. How do you close/hide the Android soft keyboard programmatically? Found inside – Page 361361 LISTING 10-1: Enabling the Action Bar