onCreate() : The system calls this method when creating the fragment.Typically you get in this method a reference to the activity which uses the fragment for further initialization work. onAttach() : The fragment instance is associated with an activity instance.The fragment and the activity is not fully initialized.MVVM (Model View ViewModel) Architecture Pattern in AndroidĪndroid fragments have their own life cycle very similar to an android activity.Naming a thread and fetching name of current thread in Java.What does start() function do in multithreading in Java?.Java Concurrency – yield(), sleep() and join() Methods.Lifecycle and States of a Thread in Java.Check if Email Address is Valid or not in Java.How to open dialer in Android through Intent?.How to Send Data From One Activity to Second Activity in Android?.How to build a simple Calculator app using Android Studio?.Implicit and Explicit Intents in Android with Examples.Android | Android Application File Structure.ISRO CS Syllabus for Scientist/Engineer Exam.ISRO CS Original Papers and Official Keys.GATE CS Original Papers and Official Keys.