com.clevertrail.mobile.findtrail.Activity_FindTrail_ByName.java Source code

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Here is the source code for com.clevertrail.mobile.findtrail.Activity_FindTrail_ByName.java

Source

/* 
   Copyright (C) 2012 Dylan Reid
    
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package com.clevertrail.mobile.findtrail;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

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

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.text.Editable;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.clevertrail.mobile.Activity_ListTrails;
import com.clevertrail.mobile.Object_TrailList;
import com.clevertrail.mobile.R;
import com.clevertrail.mobile.utils.TitleBar;
import com.clevertrail.mobile.utils.Utils;

//class to find trails by name
public class Activity_FindTrail_ByName extends Activity {

    public Activity_FindTrail_ByName mActivity = null;
    public ProgressDialog mPD = null;
    public String sSearchText = "";

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        //create the titlebar
        TitleBar.setCustomTitleBar(this, R.layout.findtrail_byname, getString(R.string.title_findtrails),
                R.drawable.ic_viewtrailtab_details_unselected);

        mActivity = this;

        // register events
        Button btnSaveTrail = (Button) findViewById(R.id.btnSearchByName);
        btnSaveTrail.setOnClickListener(onclickSearchByNameButton);
    }

    //event to handle search button click
    private OnClickListener onclickSearchByNameButton = new OnClickListener() {
        public void onClick(View v) {
            if (!Utils.isNetworkAvailable(mActivity)) {
                Utils.showMessage(mActivity, R.string.error_nointernetconnection);
                return;
            }

            EditText etSearchByName = (EditText) findViewById(R.id.etSearchByName);
            Editable edSearchText = etSearchByName.getText();
            String sSearchText = edSearchText.toString();
            sSearchText = sSearchText.trim();

            //do we have a trail name to look for?
            if (sSearchText.compareTo("") != 0 && mActivity != null) {

                //display progress dialog while we contact clevertrail.com
                mActivity.mPD = ProgressDialog.show(mActivity, "",
                        getString(R.string.progress_contactingclevertrail), true);

                mActivity.sSearchText = sSearchText;

                new Thread(new Runnable() {
                    public void run() {
                        int error = submitSearch();
                        mPD.dismiss();
                        Utils.showMessage(mActivity, error);
                        return;
                    }
                }).start();

            } else {
                // display message about empty string
                Utils.showMessage(mActivity, R.string.error_entertrailname);
            }
        }
    };

    //function to do the actual api call to clevertrail.com
    private int submitSearch() {
        JSONArray jsonArray = null;

        HttpURLConnection urlConnection = null;
        try {
            //api call to find trails by name
            String requestURL = "http://clevertrail.com/ajax/handleGetArticles.php";
            String sSearch = mActivity.sSearchText;
            sSearch = sSearch.replace(" ", "%20");
            sSearch = sSearch.replace("'", "\'");

            requestURL = requestURL.concat("?name=").concat(sSearch);

            URL url = new URL(requestURL);
            urlConnection = (HttpURLConnection) url.openConnection();

            InputStream in = new BufferedInputStream(urlConnection.getInputStream());

            BufferedReader r = new BufferedReader(new InputStreamReader(in));
            String line;
            //did we get a match from clevertrail.com?
            if ((line = r.readLine()) != null) {
                jsonArray = new JSONArray(line);
            }
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return R.string.error_contactingclevertrail;
        } catch (IOException e) {
            // TODO Auto-generated catch block
            // could not connect to clevertrail.com
            e.printStackTrace();
            return R.string.error_contactingclevertrail;
        } catch (JSONException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return R.string.error_corrupttrailinfo;
        } finally {
            if (urlConnection != null)
                urlConnection.disconnect();
        }

        //clear the static object that holds the trails
        Object_TrailList.clearTrails();
        if (jsonArray != null && jsonArray.length() > 0) {
            int len = jsonArray.length();
            try {
                //add each trail to the array of trails
                for (int i = 0; i < len && i < 20; ++i) {
                    JSONObject trail = jsonArray.getJSONObject(i);
                    Object_TrailList.addTrailWithJSON(trail);
                }
            } catch (JSONException e) {
                return R.string.error_corrupttrailinfo;
            }
        }

        //prepare the extras before starting the trail list activity
        int icon = R.drawable.ic_viewtrailtab_details_unselected;
        Intent i = new Intent(mActivity, Activity_ListTrails.class);
        i.putExtra("icon", icon);
        i.putExtra("title", mActivity.getString(R.string.title_foundtrails));
        mActivity.startActivity(i);

        return 0;
    }
}