CODEWITHSUNDEEP
javaandroidandroid-arrayadapter
thepoosh
thepoosh

Reputation: 12587

custom ArrayAdapter is not being called

I'm writing an app the gets information off an RSS feed, parses it using the DOM parser (issues with the clients RSS feed) and then shows the parsed objects in a ListView.

For some reason, the getView() is not being called...

here is the code for the Activity:

public class NoPicList extends Activity {
    ListView list;
    NoPicAdapterV2 adapter2;
    ProgressDialog mDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.no_pic_list);
        list = (ListView) findViewById(R.id.noPicListView);

        // get the request from the main activity
        Bundle b = getIntent().getExtras();
        String request = b.getString("REQUEST");

        mDialog = new ProgressDialog(this);
        mDialog.setCancelable(false);
        mDialog.setMessage("Lodaing Data");
        mDialog.show();

        new GetNewsAndCalendar().execute(request);
    }

    @Override
    protected void onPause() {
        mDialog.dismiss();
        super.onPause();
    }

    class GetNewsAndCalendar extends
        AsyncTask<String, Void, ArrayList<Message>> {

        @Override
        protected ArrayList<Message> doInBackground(String... params) {
            String url = params[0];
            DOMFeedParser parser = new DOMFeedParser(url);
            return parser.parse();
        }

        @Override
        protected void onPostExecute(ArrayList<Message> result) {
            adapter2 = new NoPicAdapterV2(NoPicList.this, R.layout.no_pic_list_item, result);
            list.setAdapter(adapter2);
            mDialog.dismiss();
            }

    }

}

here is the code for the adapter:

public class NoPicAdapterV2 extends ArrayAdapter<NewAndCalendar> {
    private ArrayList<Message> data;
    private LayoutInflater inflator;
    private Activity mActivity;

    public NoPicAdapterV2(Context context, int textViewResourceId,
        ArrayList<Message> result) {
        super(context, textViewResourceId);
        data = (ArrayList<Message>) result;
        mActivity = (Activity) context;
        inflator = (LayoutInflater) mActivity
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        View vi = convertView;
        if (vi == null)
            vi = inflator.inflate(R.layout.no_pic_list_item, parent, false);

        TextView title = (TextView) vi.findViewById(R.id.noPicTitle);
        TextView subtitle = (TextView) vi.findViewById(R.id.noPicSubtitle);
        TextView id = (TextView) vi.findViewById(R.id.noPicID);

        title.setText(data.get(position).getTitle().toString());
        subtitle.setText(data.get(position).getDate().toString());
        id.setText(data.get(position).getDescription());

        return vi;
    }
}

the DOMFeedParser code is built according to the IBM open source Java XML parser article.

thanks a bunch...

Upvotes: 0

Views: 197

Answers (3)

Bhaskar Reddy Vellaboyana
Bhaskar Reddy Vellaboyana

Reputation: 114

I hope below code will work just add one more argument to super(...)

public NoPicAdapterV2(Context context, int textViewResourceId,
        ArrayList<Message> result) {
        super(context, textViewResourceId,result);
        data = (ArrayList<Message>) result;
        mActivity = (Activity) context;
        inflator = (LayoutInflater) mActivity
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}

Upvotes: 0

njzk2
njzk2

Reputation: 39386

Your ArrayAdapter does not know the content of your array, and therefore the count is 0.

Use this super constructor instead : http://developer.android.com/reference/android/widget/ArrayAdapter.html#ArrayAdapter%28android.content.Context,%20int,%20java.util.List%3CT%3E%29

Like this :

public NoPicAdapterV2(Context context, int textViewResourceId,
    ArrayList<Message> result) {
    // Here
    super(context, textViewResourceId, result);
    data = (ArrayList<Message>) result;
    mActivity = (Activity) context;
    inflator = (LayoutInflater) mActivity
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}

Upvotes: 0

Blackbelt
Blackbelt

Reputation: 157437

you should override (in your custom adapter)

getCount()

and return the size of data in order to let the adpater works. Or you call the ArrayAdapter constructor that takes data

public ArrayAdapter (Context context, int textViewResourceId, T[] objects)

Upvotes: 3

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