Appetizer.java

package com.ratu.healthyidea;

import android.app.Fragment;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

import com.handmark.pulltorefresh.library.PullToRefreshListView;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

/**
 * Created by radityakurnianto on 1/3/15.
 */
public class Appetizer extends Fragment {
    private View view;
    private PullToRefreshListView pullToRefreshListView;

    public Appetizer(){}

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
        view = inflater.inflate(R.layout.contentlistview, container, false);
        pullToRefreshListView = (PullToRefreshListView)view.findViewById(R.id.contentlist);
        new GetAppetizer().execute();
        return view;
    }

    private class GetAppetizer extends AsyncTask<Integer, Integer, Integer>{
        ProgressDialog progressDialog;
        JSONParser jsonParser;
        JSONObject jsonObject;
        JSONArray jsonArray;
        String item, ing, ins, ben, cat, pic;
        List<GetSetContent> getSetContents;
        List<NameValuePair> params;
        CustomAdapterContent customAdapterContent;
        int status = 0;

        @Override
        public void onPreExecute(){
            progressDialog = new ProgressDialog(getActivity());
            progressDialog.setMessage("Loading appetizer");
            progressDialog.setIndeterminate(true);
            progressDialog.setCancelable(false);
            progressDialog.show();
        }

        @Override
        public Integer doInBackground(Integer... args){
            jsonParser = new JSONParser();
            params = new ArrayList<>();
            getSetContents = new ArrayList<>();

            try {
                //
                params.add(new BasicNameValuePair(Configuration.G_CATEGORIES, "appetizer"));

                // establish connection to API with post method and return json which stored in
                // jsonObject variable
                jsonObject = jsonParser.makeHttpRequest(Configuration.GET_CATEGORIES, "POST", params);

                // check if jsonObject is null or has no json
                if (jsonObject != null) {
                    try {
                        // get the status of json by parsing status key from the API
                        status = jsonObject.getInt(Configuration.G_STATUS);
                        // if json has status 1 then continue to parse another result
                        // else nothing to do with the API
                        if(status == 1) {
                            // move into jsonArray to get values of categories
                            jsonArray = jsonObject.getJSONArray(Configuration.G_CATEGORIES);
                            // loop into the jsonArray
                            for (int i = 0; i < jsonArray.length(); i++){
                                // get jsonObject from each jsonArray element
                                jsonObject = jsonArray.getJSONObject(i);
                                // store each value to variable
                                item = jsonObject.getString(Configuration.G_ITEMNAME);
                                ing = jsonObject.getString(Configuration.G_INGREDIENTS);
                                ins = jsonObject.getString(Configuration.G_INSTRUCTION);
                                ben = jsonObject.getString(Configuration.G_BENEFIT);
                                cat = jsonObject.getString(Configuration.G_CAT);
                                pic = jsonObject.getString(Configuration.G_PICTURE);
                                // add each value to our custom list
                                getSetContents.add(new GetSetContent(item, ing, ins, ben, cat, pic, pic));
                            }
                        }
                    }catch (JSONException e){
                        e.printStackTrace();
                    }
                }
            } catch (Exception e){
                e.printStackTrace();
            }
            return status;
        }

        @Override
        public void onPostExecute(Integer msg){
            super.onPostExecute(msg);
            if(msg == 1) {
                // dismiss the progress dialog
                progressDialog.dismiss();
                // notify listview if we are done doing something
                pullToRefreshListView.onRefreshComplete();
                // initializing custom adapter for our listview
                // we 2 constructor for our custom adapter
                // @param1 : context = getActivity()
                // @param2 : custom list = getSetContents
                customAdapterContent = new CustomAdapterContent(getActivity(), getSetContents);
                // fill our custom listview with the value from our custom adapter
                pullToRefreshListView.setAdapter(customAdapterContent);

                // provide tap action for each item in our custom listview
                // each tap will navigate us to the detail page of each item
                pullToRefreshListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                    @Override
                    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                        // obtaining value from a single item in custom listview
                        String item = ((TextView)view.findViewById(R.id.itemname)).getText().toString();
                        String ing = ((TextView)view.findViewById(R.id.ingredient)).getText().toString();
                        String ins = ((TextView)view.findViewById(R.id.instruction)).getText().toString();
                        String ben = ((TextView)view.findViewById(R.id.benefit)).getText().toString();
                        String cat = ((TextView)view.findViewById(R.id.categories)).getText().toString();
                        String pic = ((TextView)view.findViewById(R.id.imgurl)).getText().toString();

                        // our intent has 2 constructor
                        // @param1 : context = getActivity() this is our departure
                        // @param2 : class name = ItemDetail.class this is our destination
                        Intent intent = new Intent(getActivity(), ItemDetail.class);
                        // assigning value to send to the detail page with the help of Intent
                        intent.putExtra("item", item);
                        intent.putExtra("ing", ing);
                        intent.putExtra("ins", ins);
                        intent.putExtra("ben", ben);
                        intent.putExtra("cat", cat);
                        intent.putExtra("pic", pic);
                        // finally start the activity
                        startActivity(intent);
                    }
                });
            }
        }
    }
}