What is difference between onViewCreated and onCreateView?
onCreate() is called to do initial creation of the fragment. onCreateView() is called by Android once the Fragment should inflate a view. onViewCreated() is called after onCreateView() and ensures that the fragment’s root view is non-null .
How often is onViewCreated called?
If you were using Fragment extended to your class and have written onCreateView() method, then it would have been called only twice after your onAttach() and onDestroyView() if you are still on same fragment.
What is onCreateView fragment?
onCreateView(LayoutInflater, ViewGroup, Bundle) creates and returns the view hierarchy associated with the fragment. onActivityCreated(Bundle) tells the fragment that its activity has completed its own Activity.
What is onViewCreated in fragment?
onCreateView is used in fragment to create layout and inflate view. onViewCreated is used to reference the view created by above method. Lastly it is a good practice to define action listener in onActivityCreated. Follow this answer to receive notifications.
What are the differences between onCreate () onCreateView () and onActivityCreated () in fragments and what would they each be used for?
The onCreate() is called first, for doing any non-graphical initialisations. Next, you can assign and declare any View variables you want to use in onCreateView() . Afterwards, use onActivityCreated() to do any final initialisations you want to do once everything has completed.
Why onActivityCreated is deprecated?
Need for onActivityCreated() deprecation In such similar fashion android developers saw the tight coupling of code dependent to the Activity’s life cycle. And they decided that it is not a good practice anymore to be dependent on the activity attach to do certain things inside the fragment.
What is onCreateView?
onCreateView is called to inflate the layout of the fragment i.e graphical initialization usually takes place here. It is always called some time after the onCreate method. Follow this answer to receive notifications.
Is onAttach called before onCreateView?
Bookmark this question. Show activity on this post. In a Fragment’s Lifecycle, the onAttach() method is called before the onCreate() method.
Why is onActivityCreated deprecated?
Does onCreate come before onCreateView?
onCreateView is called to inflate the layout of the fragment i.e graphical initialization usually takes place here. It is always called some time after the onCreate method. Show activity on this post. Simple links don’t answer questions.
What is the difference between oncreate () and oncreateview ()?
To sum up. they are all called in the Fragment but are called at different times. The onCreate () is called first, for doing any non-graphical initialisations. Next, you can assign and declare any View variables you want to use in onCreateView ().
Is it better to assign subviews to fields in onviewcreated?
It’s better to do any assignment of subviews to fields in onViewCreated. This is because the framework does an automatic null check for you to ensure that your Fragment’s view hierarchy has been created and inflated (if using an XML layout file) properly.
Should I inflate the layout in oncreateview?
You should inflate your layout in onCreateView but shouldn’t initialize other views using findViewById in onCreateView. Because sometimes view is not properly initialized. So always use findViewById in onViewCreated (when view is fully created) and it also passes the view as parameter. onViewCreated is a make sure that view is fully created.
What is the use of oncreate () method in activity?
In this method, you can assign variables, get Intent extras, and anything else that doesn’t involve the View hierarchy (i.e. non-graphical initialisations). This is because this method can be called when the Activity ‘s onCreate () is not finished, and so trying to access the View hierarchy here may result in a crash.
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