Just in case anyone doesn’t read the comments of passsy’s answer, here is a summary of the useful answers: 1) Examine your getItem(int index) method very closely and look for any logic, scenarios or missing ‘break’ statements which might cause you to end up with a null fragment. 2) Check that the count returned by … Read more
@Robert Estivil If you are using AppCompatActivity then use this: actionBar = ((AppCompatActivity)getActivity()).getSupportActionBar();
Try to do this to handle the Tabs: public class MainFragment extends Fragment { private FragmentTabHost mTabHost; //Mandatory Constructor public MainFragment() { } public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_tabs,container, false); mTabHost = (FragmentTabHost)rootView.findViewById(android.R.id.tabhost); mTabHost.setup(getActivity(), getChildFragmentManager(), R.id.realtabcontent); mTabHost.addTab(mTabHost.newTabSpec(“fragmentb”).setIndicator(“Fragment B”), FragmentB.class, null); mTabHost.addTab(mTabHost.newTabSpec(“fragmentc”).setIndicator(“Fragment … Read more
Yes, Its right by calling getActivity and cast it with parent activity to access its methods or variables ((ParentActivityName)getActivity()) Try this one. ParentActivityName is parent class name
The Link for Support4Demos is changed or can be changed so posting the complete solution. Here it goes. Create attrs.xml file in res/values folder. Or add the below content if file already exists. <?xml version=”1.0″ encoding=”utf-8″?> <resources> <declare-styleable name=”MyFragment”> <attr name=”my_string” format=”string”/> <attr name=”my_integer” format=”integer”/> </declare-styleable> Override the onInflate delegate of fragment and read attributes … Read more
I think it is better to have a look at definition of Detach and Remove in FragmentTransaction Documentation to understand what is going on. Detach Detach the given fragment from the UI. This is the same state as when it is put on the back stack: the fragment is removed from the UI, however its … Read more
Of course, we can not prevent calling oncrateView, but there is a simple way. Instead of calling view.loadData() in onCreateView or other lifecycle methods we can call it while initializing ViewModel this article helped me to know ViewModel better 5 common mistakes when using Architecture Components Update: The current navigation component (V 2.3.0) doesn’t support … Read more
All the problem was in that I don’t declare android:id for the fragment in XML. Android needs ID or TAG to recognize stored fragment and reproduce all elements in it. So guys, remember – every instance of fragment needs unique id or tag! Also, when setRetainInstance(true) is declared then bundle should always return null.
Here is the Android Studio proposed solution (= when you create a Blank-Fragment with File -> New -> Fragment -> Fragment(Blank) and you check “include fragment factory methods”). Put this in your Fragment: class MyFragment: Fragment { … companion object { @JvmStatic fun newInstance(isMyBoolean: Boolean) = MyFragment().apply { arguments = Bundle().apply { putBoolean(“REPLACE WITH A … Read more
I’d say this is not possible to do as putting a fragment in a ListView would mean the fragment can be multiplied across multiple containers. When you use the FragmentManager to create a fragment, it is tagged with an identifier, making it simple to reload and rearrange on orientation and other configuration changes. It also … Read more