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Android Fragment .setAdapter giving null pointer Exception onClick


Android Fragment .setAdapter giving null pointer Exception onClick

By : user2952352
Date : November 19 2020, 12:41 AM
this one helps. here inflated layout is defferent from the xml layout, your are creating ViewPager instead of inflating the the xml layout.
write like this: in your onCreateView .
code :
public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View inflate = inflater.inflate(R.layout.your_layout_name, null);

        return inflate;
    }


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Android Listview adapter giving null pointer exception in fragment

Android Listview adapter giving null pointer exception in fragment


By : Mason Gordon
Date : March 29 2020, 07:55 AM
Any of those help The code used here I pulled out of another fragment class which works very well.
code :
 public class UserGamesHandler extends android.support.v4.app.Fragment implements

 android.view.View.OnClickListener {

 File path = new File(Environment.getRootDirectory().getAbsolutePath().toString());

 ArrayList<String> fileList = new ArrayList<String>();

@Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container,
                     Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_user_games, container,
        false);

getVideos(path);
SetListViewAdapter();

return view;
}    
 @Override
public void onActivityCreated (Bundle savedInstanceState)
{
    super.onActivityCreated(savedInstanceState);
 getVideos(path);
SetListViewAdapter();

}


private void getVideos(File f){

File[] files = f.listFiles();
//fileList.clear();
for (File file : files){
    fileList.add(file.getName().toString()+".MP4  ");
 }
  }

private void SetListViewAdapter() {
ListView lv = (ListView) getView().findViewById(R.id.listViewTest);

ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(),
        R.layout.custom_listview, fileList);

lv.setAdapter(adapter);

Toast.makeText(getActivity().getApplicationContext(), fileList.toString(), Toast.LENGTH_LONG).show();
  }
}
   }
List view setAdapter in fragment, null pointer exception

List view setAdapter in fragment, null pointer exception


By : user3272533
Date : March 29 2020, 07:55 AM
hop of those help? Your item variable is null in adapter = new SearchAdapter(getActivity(), R.layout.row, item);, so instanciate it before.
Android ImageButton OnClick giving null pointer exception

Android ImageButton OnClick giving null pointer exception


By : Leandro William Osor
Date : March 29 2020, 07:55 AM
Hope that helps Im calling a poup dialog from a menu option that says sign in with: then shows Twitter and Google logos as 2 imagebuttons. , The issue was in these lines,
code :
googleButton2 = (ImageButton)findViewById(R.id.googleButton);
twitterButton2 = (ImageButton)findViewById(R.id.twitterButton);
 AlertDialog.Builder alertadd = new AlertDialog.Builder(
                SummaryActivity.this);
    LayoutInflater factory = LayoutInflater.from(SummaryActivity.this);
    final View view = factory.inflate(R.layout.social_network_selection, null);
    alertadd.setView(view);
    googleButton2 = (ImageButton) view.findViewById(R.id.googleButton);
    twitterButton2 = (ImageButton) view.findViewById(R.id.twitterButton);

    googleButton2.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {

               Toast.makeText(MyAndroidAppActivity.this,
                "googleButton2 is clicked!", Toast.LENGTH_SHORT).show();

            }

        });
null pointer exception with listview.setadapter() in fragment in method oncreateview

null pointer exception with listview.setadapter() in fragment in method oncreateview


By : Mahmoud Nasser
Date : March 29 2020, 07:55 AM
Any of those help public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflater.inflate(R.layout.fragment_main, container, false); , Replace:
Android Fragment: Null Pointer Exception on calling setAdapter() for a Snipper

Android Fragment: Null Pointer Exception on calling setAdapter() for a Snipper


By : Maiko De Andrade
Date : September 29 2020, 12:00 AM
Hope that helps I am creating an app using fragments. There are three fragments for my main activity inflating from a Bottom Navigation menu. I've added a Dropdown snipper in the layout of fragment 1. In the main activity I am trying to set the adapter for that snipper. The code is following: , try this code,
code :
Spinner spinner = (your view).findViewById(**your xml spinner view id**);
     List<String> list = new ArrayList<String>();
     list.add("Phones");
     list.add("Laptops");
     list.add("Tablets");
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>((here if you use Activity use **this** or in fragment use **getContext()**),
         android.R.layout.simple_spinner_item, list);(here put your spinner item xml)
     dataAdapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
     spinner.setAdapter(dataAdapter);
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