List View will not inflate

Question

Please help, I am trying to retrieve a list of friends from FaceBook that also use an app. I am getting the list and the Data is showing up, but my adapter does not inflate the list view. All the id's are correct, and Log tags show me what I need, but the view will not inflate. Here is the relevant code:

View Adapter:

package com.example.sca.ihavebeen;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Adapter;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import org.json.JSONArray;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by Tom Schinler on 9/10/2015.
 */
public class FriendsViewAdapter extends ArrayAdapter<FaceBookFriends> {
    public FriendsViewAdapter(Context context, JSONArray friends) {
        super(context,0);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent){
        FaceBookFriends friend = getItem(position);

        if (convertView == null) {
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.fb_friends_layout, parent);
        }
        TextView fbName = (TextView)convertView.findViewById(R.id.fbName);
        ImageView fbPic = (ImageView)convertView.findViewById(R.id.fbPic); // Not yet ready to handle this
        fbName.setText(friend.name);


        return convertView;
    }
}

Here is the view the list should inflate on:

package com.example.sca.ihavebeen;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.ListView;

import com.facebook.AccessToken;
import com.facebook.GraphRequest;
import com.facebook.GraphResponse;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;

public class GameStart extends AppCompatActivity {

    JSONArray mArrayofFriends;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_game_start);



        mArrayofFriends = FaceBookFriends.getFriendsList();


        Log.v("maybe ", String.valueOf(mArrayofFriends));

        populateFbFriendsList();

    }

    private void populateFbFriendsList() {

        FriendsViewAdapter adapter = new FriendsViewAdapter(this, mArrayofFriends);

        ListView listView = (ListView) findViewById(R.id.fbFriendsListView);
        listView.setAdapter(adapter);
    }




}

and just for kicks, here is the class calling the Graph Response:

package com.example.sca.ihavebeen;

import android.util.Log;

import com.facebook.AccessToken;
import com.facebook.GraphRequest;
import com.facebook.GraphResponse;

import org.json.JSONArray;

/**
 * Created by Tom Schinler on 8/4/2015.
 */
public class FaceBookFriends {




    public static JSONArray mFriendsList;
    public String name;
    public String id;




    public static JSONArray getFaceBookFriends() {
        AccessToken accessToken = AccessToken.getCurrentAccessToken();
        GraphRequest request = GraphRequest.newMyFriendsRequest(
                accessToken,
                new GraphRequest.GraphJSONArrayCallback() {
                    @Override
                    public void onCompleted(JSONArray array, GraphResponse response) {
                        // Insert your code here

                        mFriendsList = array;
                        Log.v("Array: ", String.valueOf(mFriendsList));
                        Log.v("Facebook response: ", String.valueOf(response));

                    }
                });

        request.executeAsync();




        return mFriendsList;

    }

    public static JSONArray getFriendsList() {
        return mFriendsList;
    }

    public FaceBookFriends(String name, String id){
        this.name = name;
        this.id = id;
    }

}

Please help me figure out this issue!

score 0 · Answer 1 · answered Sep 11 '15 at 18:03

0

You might need to override getCount in order for your list to know how many objects are actually in the adapter. Otherwise it won't lay anything out.

answered Sep 11 '15 at 18:03

Chris Thoma

499
2
8

score 0 · Accepted Answer · edited May 23 '17 at 11:58

0

You're using an ArrayAdapter<FaceBookFriends> without setting an array:

public FriendsViewAdapter(Context context, JSONArray friends) {
    super(context,0);
}

Instead you should Convert Json Array to normal Java Array or more precise List<FaceBookFriends> and set it inside the constructor:

public FriendsViewAdapter(Context context, JSONArray friends) {
    super(context,0,convertJSONArray2List(friends));
}

edited May 23 '17 at 11:58

Community

1
1

answered Sep 11 '15 at 18:13

tynn

38,113
8
108
143

I appreciate this so much, I set the conversion method inside the constructor, like you showed, then created the method just like the one you linked to, but now i get a null pointer exception at `listView.setAdapter(adapter);` and it appears that the adapter is not getting the array. a Log.v show that the conversion is happening, and displaying the data in logcat, but not being converted. I know what I am missing is going to be silly and obvious, but I am struggling. – T.Schinler Sep 14 '15 at 15:15
I figured it out. Thank you again so much for your help! – T.Schinler Sep 14 '15 at 15:50
And now I'm stuck. Inside the array list, as an array with 2 key value pairs ie: [{"id":"10207092696420407","name":"Gina Schinler"}], I need to access those key value pairs and insert them into my views. When I try this, the view inflates with both key value pairs as if it were all one string. – T.Schinler Sep 14 '15 at 16:49
So, I switched from converting the JSONArray to a Java Array and instead converted it to a hasmap, and all is working now. Thanks again! – T.Schinler Sep 15 '15 at 14:41

List View will not inflate

2 Answers2