MainActivity

package com.example.farid.portalberita;

import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import org.apache.http.NameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class MainActivity extends AppCompatActivity {
    JSONParser jsonParser = new JSONParser();

    private ProgressDialog progressDialog;

    ArrayList<HashMap<String,String>> ListBerita = new ArrayList<HashMap<String, String>>();
    public static final String TAG_ID="id";
    public static final String TAG_JUDUL="judul";
    public static final String TAG_GAMBAR="gambar";
    JSONArray jsonArray = null;
    ListView ls;
    LazyAdapter adapter;
    Config config = new Config();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
//         FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
//        fab.setOnClickListener(new View.OnClickListener() {
//            @Override
//            public void onClick(View view) {
//                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
//                        .setAction("Action", null).show();
//            }
//        });

        ListBerita = new ArrayList<HashMap<String,String>>();
        new TampilBerita().execute();
        ls =(ListView)findViewById(R.id.list);
        ls.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                HashMap<String,String> map = ListBerita.get(position);
                Intent a = new Intent(getApplicationContext(), DetailBerita.class);
                a.putExtra(TAG_ID, map.get(TAG_ID));
                a.putExtra(TAG_JUDUL, map.get(TAG_JUDUL));
                a.putExtra(TAG_GAMBAR, map.get(TAG_GAMBAR));
                startActivity(a);
            }
        });
    }
    class TampilBerita extends AsyncTask<String,String,String> {
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            progressDialog = new ProgressDialog(MainActivity.this);
            progressDialog.setIndeterminate(false);
            progressDialog.setCancelable(false);
            progressDialog.setTitle("Info");
            progressDialog.setMessage("Mengambil Data..");
            progressDialog.show();
        }
        @Override
        protected String doInBackground(String... params) {
            List<NameValuePair> parampa = new ArrayList<>();
            JSONObject jsonObject = jsonParser.makeHttpRequest(config.url_berita,"GET", parampa);
            Log.i("JSON : ", ""+jsonObject);
            try{
                jsonArray = jsonObject.getJSONArray("berita");
                for(int a=0; a <jsonArray.length(); a++){
                    JSONObject js = jsonArray.getJSONObject(a);
                    String idBerita = js.getString(TAG_ID);
                    String jdlberita = js.getString(TAG_JUDUL);
                    //String gbrBerita = config.gambar_berita+js.getString(TAG_GAMBAR);
                    String gbrBerita = js.getString(TAG_GAMBAR);

                    HashMap<String,String> map = new HashMap<String ,String>();
                    map.put(TAG_ID, idBerita);
                    map.put(TAG_JUDUL, jdlberita);
                    map.put(TAG_GAMBAR, gbrBerita);
                    ListBerita.add(map);
                }
            }catch (JSONException e){
            }
            return null;
        }
        @Override
        protected void onPostExecute(String s) {
            progressDialog.dismiss();
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    SetListBerita(ListBerita);
                }
            });
        }
    }
    private void SetListBerita(ArrayList<HashMap<String, String>> listBerita) {
        adapter = new LazyAdapter(this,listBerita );
        ls.setAdapter(adapter);
    }
}