how to display fetched json data into listview using baseadapter

Question

I am new to android and java.Recently I am having problem with displaying fetched json data into listview using baseadapter. At first I have used this code

Answer 1

@Allen Chun , actually its not in my mind currently that what I have changed in my code to run my code perfectly. But I am sharing all my codes which are working perfectly.

Its my layout code,

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
    android:id="@+id/fsr"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:text="Notice Board"
    android:textSize="20px" />

   <TextView
    android:id="@+id/err_msg"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text=""
    android:gravity="center" />

<ListView
    android:layout_width="wrap_content"
    android:layout_height="match_parent" 

    android:id="@+id/list_notice2"

    android:layout_gravity="center" />




</LinearLayout>

This is my custom listview layout codes,

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<TextView
    android:id="@+id/title"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="TextView" 
    android:paddingTop="10dp"
    android:layout_gravity="center"
      android:textAppearance="?android:attr/textAppearanceMedium" />
    />

<TextView
    android:id="@+id/notice"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Small Text"
    android:paddingTop="5dp"
    android:layout_gravity="center"
    android:textAppearance="?android:attr/textAppearanceSmall" />

</LinearLayout>

its my activity named "NoticeBoard" .

public class NoticeBoard extends Activity {


ArrayList<String> title_array = new ArrayList<String>();
ArrayList<String> notice_array = new ArrayList<String>();

ListView list;
base_adapter3 adapter;
 TextView f,msg;




@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.list_notice);
    list = (ListView) findViewById(R.id.list_notice2);
    msg=(TextView) findViewById(R.id.err_msg);
    new test_ays().execute();
}




class test_ays extends AsyncTask<Void, Void, String> {

    @Override
    protected String doInBackground(Void... params) {
        String str = null ;
        try {
            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("http://10.0.2.2/BSDI/show.php");

            HttpResponse response = httpclient.execute(httppost);
            str = EntityUtils.toString(response.getEntity());
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();



        }
        return str;


    }



@Override
protected void onPostExecute(String result) {

    super.onPostExecute(result);
    if(result!=null) // add this
    {  
     String response = result.toString();


   try {

        JSONArray new_array = new JSONArray(response);

        for (int i = 0, count = new_array.length(); i < count; i++) {
            try {
                JSONObject jsonObject = new_array.getJSONObject(i);
                title_array.add(jsonObject.getString("title").toString());
                notice_array.add(jsonObject.getString("notice").toString());

            } catch (JSONException e) {
                e.printStackTrace();

            }
        }

        adapter = new base_adapter3(NoticeBoard.this, title_array, notice_array);
      list.setAdapter(adapter);
       // f=(TextView) findViewById(R.id.textTuh);
       // f.setText(title_array);
    } catch (JSONException e) {
        // TODO Auto-generated catch block
       e.printStackTrace();

        // tv.setText("error2");
    }
    }

    else{
        msg.setText("You need a working data connection...");
    }


}
}

}

And its my custom baseadapter codes,

public class base_adapter2 extends BaseAdapter {


    private Activity activity;
    //private ArrayList<HashMap<String, String>> data;
    private static ArrayList title,notice;
    private static LayoutInflater inflater = null;

    public base_adapter2(Activity a, ArrayList b) {
      activity = a;
      this.title = b;
     // this.notice=bod;

      inflater = (LayoutInflater) activity
              .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    }

    public int getCount() {
      return title.size();
    }

    public Object getItem(int position) {
      return position;
    }

    public long getItemId(int position) {
      return position;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
      View vi = convertView;
      if (convertView == null)
          vi = inflater.inflate(R.layout.bsdi_adapter, null);


      TextView title2 = (TextView) vi.findViewById(R.id.txt1); // title
      String song = title.get(position).toString();
      title2.setText(song);



    return vi;

    }

}