Attempt to invoke virtual method

Question

I am trying to get some LinearLayoutsin my onCreateView but my App is crashing with the following message:

23430-23430/? W/System.e         


        

Answer 1

You're calling getView() too early - it will only return the view you return yourself from onCreateView().

Inside onCreateView() use the recently inflated rootView instead of getView().

Answer 2

The same NullPointerException caused while I'm trying to make a component extends view, it may due to the using of LayoutInflater

View view = LayoutInflater.from(context).inflate(R.layout.layout_index_bar, null);
container = (LinearLayout) view.findViewById(R.id.indexContainer);

Answer 3

Change to

 card01 = (LinearLayout) rootView.findViewById(R.id.card01);
 card02 = (LinearLayout) rootView.findViewById(R.id.card02);
 card03 = (LinearLayout) rootView.findViewById(R.id.card03);
 card04 = (LinearLayout) rootView.findViewById(R.id.card04);
 card05 = (LinearLayout) rootView.findViewById(R.id.card05);
 card06 = (LinearLayout) rootView.findViewById(R.id.card06);

You inflate a layout. the views belong to the inflated layout. So use the view object to initialize views in onCreateView

Fragment is hosted by a Acitvity

You can use getView in onActivityCreated and initialize views

Initialize your TextView's also in onCreateView. Since Asynctask is a inner class you can update ui there

Declare

 RobotoTextView date_widget2;

as instance variable

Then in onCreateView

 date_widget2= (RobotoTextView) rootView.findViewById(R.id.date02);