; Press the green Run / Play button to build and run the app. Understand from the bug issue raised in 25758, and some postings I have read, to invoke onCloseListener, you need to set:. Paste the logo of your application in res > drawable. Using NoActionbar of themes prevents the app from using the native ActionBar class to provide the app bar. START ) ; } else { super .onBackPressed() ; } } @Override public boolean onCreateOptionsMenu (Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. Kotlin Docs Overview Guides Reference Samples Design & Quality Android API Reference. ; In the Select Deployment Target window, if you already have an Android device listed in your available devices, skip to Step 8.Otherwise, click Create New Virtual Device. Thankfully, there's a handy Kotlin feature that can be used to separate your constants and make them usable without a particular instance of the class called companion objects. The top app bar provides a consistent place along the top of your app window for displaying information and actions from the current screen.. Thankfully, there's a handy Kotlin feature that can be used to separate your constants and make them usable without a particular instance of the class called companion objects. For cases like these, you can instead pass a set of BottomNavigationView ID { super.onCreate(savedInstanceState) addMenuProvider(object : MenuProvider { override fun onCreateMenu(menu: Menu, menuInflater: MenuInflater) { Note: This course uses the terms "codelab" and "practical" ; Press the green Run / Play button to build and run the app. Which of the following is false about collections and higher order functions in Kotlin? This codelab is part of the Advanced Android Development training course, developed by the Google Developers Training team.You will get the most value out of this course if you work through the codelabs in sequence. Ensure that the build configuration to the left of the Run / Play button is app. Kotlin onCreateView()onViewCreated() onActivityCreated() LiveData getViewLifecycleOwner() LintFix Fragment 1.2.0-rc01 Kotlin viewLifecycleOwner getViewLifecycleOwner() Android (Broadcast Receivers) Using a BottomNavigationView is a common use case for this, where you may have sibling screens that are not hierarchically related to each other and may each have their own set of related destinations. Figure 1. searchView.setIconifiedByDefault(true); Based on this solution I've created a kotlin function that can check whether the current fragment is of a specific type (instead of the id): navHostFragment! Using a BottomNavigationView is a common use case for this, where you may have sibling screens that are not hierarchically related to each other and may each have their own set of related destinations. For complete details about the course, see the Advanced Android Development overview..