NullPointerException while creating TextView dynamically inside custom ArrayAdapter

Question

I am having trouble creating a TextView dynamically inside my custom ArrayAdapter. I guess it has something to do with the inflated layout, but I can't find a similar case anywhere around.

I get NPE at this line:

likers[position] = new TextView(context);

I would be really thankful for a suggestion.

custom ArrayAdapter:

public class FeedGridViewAdapter extends ArrayAdapter<FeedItemsSetter> {
    private Context context;
    private int layoutResourceId;
    private ArrayList<FeedItemsSetter> data = new ArrayList<FeedItemsSetter>();
    private TextView locationName;
    private ImageView image;
    private ImageView feedUserImage;
    private TextView cityName;
    private TextView userInfo;
    private TextView[] likers;
    private String[] separatedDire;

    public FeedGridViewAdapter(Context context, ArrayList<FeedItemsSetter> data) {
        super(context, android.R.id.content, data); 
        this.context = context;
        this.data = data;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        LayoutInflater vi = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View view = vi.inflate(R.layout.feed_grid, null);

            FeedItemsSetter item = data.get(position);

            locationName = (TextView) view.findViewById(R.id.locName);
            locationName.setText(item.getTitle());

            cityName = (TextView) view.findViewById(R.id.cityName);
            cityName.setText(item.getCategory());

            userInfo = (TextView) view.findViewById(R.id.feedUserName);
            userInfo.setText(item.getUser());

            feedUserImage = (ImageView) view.findViewById(R.id.feedUserImage);
            Picasso.with(context)
            .load("https://graph.facebook.com/" + item.getUserId() + "/picture?type=large") 
            .placeholder(R.drawable.placeholder)
            .error(R.drawable.ic_launcher)
            .transform(new RoundedTransformation(90, 4))
            .resize(100, 100)         
            .centerCrop()  
            .into(feedUserImage);  

            image = (ImageView) view.findViewById(R.id.image);          
            Picasso.with(context).load("http://www.edmondvarga.com/gastrolove/uploads/" + item.getImage())
            .into(image); 

            separatedDire = item.getLiker().split(",");

            LinearLayout layout = (LinearLayout) view.findViewById(R.id.likerNames);

            likers[position] = new TextView(context); // <----- EXCEPTION AT THIS LINE

            likers[position].setText(separatedDire[0] + ", ");
            likers[position].setTextColor(Color.parseColor("#d52e2e"));
            likers[position].setTypeface(null, Typeface.BOLD_ITALIC);
            likers[position].setTextSize(13);                   

            layout.addView(likers[position]);

            likers[position].setOnClickListener(new View.OnClickListener() {
                public void onClick(View v) {                               
                    Intent in= new Intent(context, UserProfile.class);
                    in.putExtra("user", separatedDire[0]);
                    in.putExtra("userId", separatedDire[1]);
                    context.startActivity(in);                              
                }

            }); 



        return view;
    }
}

12-12 16:55:38.056: E/AndroidRuntime(28749): FATAL EXCEPTION: main 12-12 16:55:38.056: E/AndroidRuntime(28749): Process: com.fideli, PID: 28749 12-12 16:55:38.056: E/AndroidRuntime(28749): java.lang.NullPointerException 12-12 16:55:38.056: E/AndroidRuntime(28749): at com.fideli.userimages.FeedGridViewAdapter.getView(FeedGridViewAdapter.java:78) 12-12 16:55:38.056: E/AndroidRuntime(28749): at com.fideli.userimages.OffersFragmentActivity.setListViewHeightBasedOnChildren(OffersFragmentActivity.java:368) 12-12 16:55:38.056: E/AndroidRuntime(28749): at com.fideli.userimages.OffersFragmentActivity.addToFeedGrid(OffersFragmentActivity.java:354) 12-12 16:55:38.056: E/AndroidRuntime(28749): at com.fideli.userimages.OffersFragmentActivity.getFeed(OffersFragmentActivity.java:343) 12-12 16:55:38.056: E/AndroidRuntime(28749): at com.fideli.userimages.OffersFragmentActivity$4.onSuccess(OffersFragmentActivity.java:172) 12-12 16:55:38.056: E/AndroidRuntime(28749): at com.loopj.android.http.JsonHttpResponseHandler$1$1.run(JsonHttpResponseHandler.java:126) 12-12 16:55:38.056: E/AndroidRuntime(28749): at android.os.Handler.handleCallback(Handler.java:733) 12-12 16:55:38.056: E/AndroidRuntime(28749): at android.os.Handler.dispatchMessage(Handler.java:95) 12-12 16:55:38.056: E/AndroidRuntime(28749): at android.os.Looper.loop(Looper.java:146) 12-12 16:55:38.056: E/AndroidRuntime(28749): at android.app.ActivityThread.main(ActivityThread.java:5602) 12-12 16:55:38.056: E/AndroidRuntime(28749): at java.lang.reflect.Method.invokeNative(Native Method) 12-12 16:55:38.056: E/AndroidRuntime(28749): at java.lang.reflect.Method.invoke(Method.java:515) 12-12 16:55:38.056: E/AndroidRuntime(28749): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283) 12-12 16:55:38.056: E/AndroidRuntime(28749): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099) 12-12 16:55:38.056: E/AndroidRuntime(28749): at dalvik.system.NativeStart.main(Native Method)

possible duplicate of [What is a Null Pointer Exception, and how do I fix it?](http://stackoverflow.com/questions/218384/what-is-a-null-pointer-exception-and-how-do-i-fix-it) — Selvin, Dec 12 '14 at 15:09
anyway ... this is a very bad idea ... first of all you are not reusing the convertView ... also if you scroll down and up your adapter will create new TextBox for the same position ... it would be better to store the values from those texboxes inside FeedItemsSetter model — Selvin, Dec 12 '14 at 15:13
isn't the problem also in setListViewHeightBasedOnChildren method? — Marko Niciforovic, Dec 12 '14 at 15:16

score 0 · Accepted Answer · answered Dec 12 '14 at 15:10

0

You have not initialized likers array.You have to do something like:

      TextView[] likers = new TextView[4];

with the number of views You want to have inside the array.

answered Dec 12 '14 at 15:10

Opiatefuchs

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instead `4` => `data.size()` fx in constructor but this whole code is a dead end, anyway – Selvin Dec 12 '14 at 15:16
unfortunatelly not working, basically I have initialised the view before like: TextView likers[position] = new TextView(context); but I think it should be casted to View view. I guess – Edmond Tamas Dec 12 '14 at 15:16
I know it is not really nice, but I need a OnClickListener on the names of the persons who like a picture. – Edmond Tamas Dec 12 '14 at 15:17
then do not store those TextViews at all ... use setTag and put the user and userid(fx as some POJO class) inside it then in onClick use getTag with`View v` ... also get rid of `separatedDire` it makes no sens becuase you are setting it every time getView is called – Selvin Dec 12 '14 at 15:23

NullPointerException while creating TextView dynamically inside custom ArrayAdapter

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