Android Open Source - android-gps- Main Activity

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License

The source code is released under:

Apache License

Java Source Code

package com.droid.waterhub;
//  w  w w .j  a va2  s  . co m
import java.util.ArrayList;
import java.util.HashMap;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;







import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;

public class MainActivity extends ListActivity {
  private Context context;
  //private static String url = "http://docs.blackberry.com/sampledata.json";
  private static String url = "http://technoturbine.com/lbs/index.php/services/get_all_categories";

  //private static final String Cat_name = "name";
  //private static final String Cat_Id = "id";
  
  //private static final String TAG_VCOLOR = "vehicleColor";
  //private static final String TAG_FUEL = "fuel";
  //private static final String TAG_TREAD = "treadType";
//  private static final String TAG_OPERATOR = "approvedOperators";
  private static final String TAG_NAME = "name";
  private static final String TAG_IMAGE = "image_icon";
  //private static final String TAG_POINTS = "experiencePoints";
  
  public Integer images_list[] = {R.drawable.imgshelter,R.drawable.imgshelter};
  

  ArrayList<HashMap<String, Integer>> jsonlist = new ArrayList<HashMap<String,Integer>>();
  
  ListView lv ;

  Spinner mSprPlaceType;
   
    String[] mPlaceType=null;
    String[] mPlaceTypeName=null;
    
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    new ProgressTask(MainActivity.this).execute();
  }

  private class ProgressTask extends AsyncTask<String, Void, Boolean> {
    private ProgressDialog dialog;

    private ListActivity activity;

    // private List<Message> messages;
    public ProgressTask(ListActivity activity) {
      this.activity = activity;
      context = activity;
      dialog = new ProgressDialog(context);
    }

    /** progress dialog to show user that the backup is processing. */

    /** application context. */
    private Context context;

    private String name;

    private String catId;

    protected void onPreExecute() {
      this.dialog.setMessage("Progress start");
      this.dialog.show();
    }

    @Override
    protected void onPostExecute(final Boolean success) {
      if (dialog.isShowing()) {
        dialog.dismiss();
      }
      
       // Array of place types
          mPlaceType = getResources().getStringArray(R.array.place_type);
   
          // Array of place type names
          mPlaceTypeName = getResources().getStringArray(R.array.place_type_name);
   
          // Creating an array adapter with an array of Place types
          // to populate the spinner
          ArrayAdapter<String> adapter_place = new ArrayAdapter<String>(context, android.R.layout.simple_spinner_dropdown_item, mPlaceTypeName);
   
          // Getting reference to the Spinner
          mSprPlaceType = (Spinner) findViewById(R.id.spr_place_type);
   
          // Setting adapter on Spinner to set place types
          mSprPlaceType.setAdapter(adapter_place);
   
          Button btnFind;
          
       // Getting reference to Find Button
          btnFind = ( Button ) findViewById(R.id.btn_find);
          
       // Setting click event lister for the find button
            btnFind.setOnClickListener(new OnClickListener() {
 
                @Override
                public void onClick(View v) {
 
                    
                      Intent intent = new Intent();
                      intent.setClassName(getPackageName(), getPackageName() + ".MarkActivity"); 
                      //intent.putExtra("radius",type); 
                      //intent.putExtra("selected","1");
                   startActivity(intent);
                   
                }
            });
      
      
      ListAdapter adapter = new SimpleAdapter(context, jsonlist,
          
          R.layout.list_item, new String[] {TAG_IMAGE }, new int[] {
          R.id.img_icon });
          

      setListAdapter(adapter);

      // selecting single ListView item
       lv = getListView();
      
       lv.setOnItemClickListener(new OnItemClickListener() { 
         
               public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3){  
                 int selectedPosition = mSprPlaceType.getSelectedItemPosition();
                   String type = mPlaceType[selectedPosition];
                 Intent intent = new Intent();
                   intent.setClassName(getPackageName(), getPackageName() + ".LocationActivity"); 
                   intent.putExtra("selected",lv.getAdapter().getItem(arg2).toString()); 
                   intent.putExtra("radius",type);
                   startActivity(intent); 

               }

           });

       
    }

    protected Boolean doInBackground(final String... args) {

      JSONParser jParser = new JSONParser();

      // getting JSON string from URL
      JSONArray json = jParser.getJSONFromUrl(url);

      for (int i = 0; i < json.length(); i++) {

        try {
          JSONObject c = json.getJSONObject(i);
          //String cat_name = c.getString(TAG_NAME);

          //String cat_id = c.getString(Cat_Id);
          //String vfuel = c.getString(TAG_FUEL);
          //String vtread = c.getString(TAG_TREAD);

          HashMap<String, Integer> map = new HashMap<String, Integer>();

          // adding each child node to HashMap key => value
          //map.put(TAG_NAME, cat_name);
          map.put(TAG_IMAGE, images_list[i]);
          //map.put(Cat_Id, cat_id);
          //map.put(TAG_FUEL, vfuel);
          //map.put(TAG_TREAD, vtread);
          jsonlist.add(map);
        } catch (JSONException e) {
          // TODO Auto-generated catch block
          e.printStackTrace();
        }
      }

      return null;

    }

  }

}

Java Source Code List

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