Parsing JSON and display it into custom listview android

Question

I'm currently developing an android application that required to parse an online JSON and display it into custom listview.

My problem is when I run the application it has an error says that

org.json.JSONException: End of input at character 0

Here's what I do:

* layouts/row_listitem.xml*

 <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="80dp"
android:orientation="vertical"
android:padding="5dp" >

<ImageView
    android:id="@+id/iv_icon_social"
    android:layout_width="60dp"
    android:layout_height="60dp"
    android:layout_centerVertical="true"
    android:background="@drawable/image1"
    android:src="@drawable/image1"
    android:visibility="gone" />

<LinearLayout
    android:id="@+id/thumbnail"
    android:layout_width="fill_parent"
    android:layout_height="85dp"
    android:layout_alignParentRight="true"
    android:layout_marginTop="0dp"
    android:layout_toRightOf="@+id/iv_icon_social"
    android:gravity="center_vertical"
    android:orientation="vertical"
    android:padding="5dip"
    android:visibility="visible" >

    <TextView
        android:id="@+id/txt_ttlsm_row"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:paddingLeft="10dp"
        android:text="Sample text"
        android:textSize="18dp"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/txt_ttlcontact_row2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="0dp"
        android:layout_marginTop="3dp"
        android:paddingLeft="10dp"
        android:maxEms="20"
        android:maxLines="2"
        android:singleLine="false"
        android:ellipsize="end"
        android:text="Sample text2"
        android:textColor="#808080"
        android:textSize="15dp"
        android:textStyle="normal"
        android:visibility="visible" />


</LinearLayout>

</RelativeLayout>

* layouts/activity_main.xml*

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true" >

    </ListView>

</RelativeLayout>

MyBaseAdapter.java

package com.example.parsing_online;

import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

public class MyBaseAdapter extends BaseAdapter {

    private Activity activity;
    private static ArrayList title,notice;
    private static LayoutInflater inflater = null;


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

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

    }



    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        View vi = convertView;
        if (convertView == null){
            vi = inflater.inflate(R.layout.row_listitem, null);
        }

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


        TextView title22 = (TextView) vi.findViewById(R.id.txt_ttlcontact_row2); // notice
        String song2 = notice.get(position).toString();
        title22.setText(song2);



        return vi;
    }

}

and in my MainActivity.java

 package com.example.parsing_online;

    import java.io.IOException;
    import java.util.ArrayList;

    import org.apache.http.HttpResponse;
    import org.apache.http.client.HttpClient;
    import org.apache.http.client.methods.HttpPost;
    import org.apache.http.impl.client.DefaultHttpClient;
    import org.apache.http.util.EntityUtils;
    import org.json.JSONArray;
    import org.json.JSONException;
    import org.json.JSONObject;

    import android.app.Activity;
    import android.os.AsyncTask;
    import android.os.Bundle;
    import android.widget.ListView;



    public class MainActivity extends Activity {

    ArrayList<String> title_array = new ArrayList<String>();
    ArrayList<String> notice_array = new ArrayList<String>();
    ListView list;
    MyBaseAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        list = (ListView) findViewById(R.id.listView1);
        new TheTask().execute();
    }

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

        @Override
        protected String doInBackground(Void... params) {
          String str = null;
          try {
                HttpClient httpclient = new DefaultHttpClient();
             HttpPost httppost = new HttpPost(
                        "http://******.com/api/v1/***");
             httppost.addHeader("Authorization", "Token token=Wa5sfwP3ku7c15qkZTsdSA");
             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);
          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 MyBaseAdapter(MainActivity.this, title_array, notice_array);
            list.setAdapter(adapter);
           } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
           }

        }
    }

  }

Answer 1

Just check the json. I think its not a valid one.Just try with below one

{
"id": "4",
"title": "Test",
"notice": "Test"
}