DeletePlaylistTask.java

package com.ved.musicmapapp.providers;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.json.JSONObject;

import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.util.Log;

import com.ved.musicmapapp.utils.Statics;

public class DeletePlaylistTask extends AsyncTask<Void, Void, String> {

	private Activity act;
	private ProgressDialog dialog;
	private int _playlistId;
	
	public DeletePlaylistTask(Activity act, int playlistId) {
		Log.i("check","In DeletePlaylistTask");
		this.act = act;
		this._playlistId = playlistId;
		this.dialog = new ProgressDialog(act);
		this.dialog.setMessage("Loading...");
		this.dialog.setCancelable(false);
	}

	@Override
	protected String doInBackground(Void... params) {	
		String res = null;
		try{
			if(!Statics.isNetworkConnected(act)){
				return "INTERNET CONNECTION ISSUE";
			}

			HttpClient httpclient = new DefaultHttpClient();
			HttpPost httppost = new HttpPost(Statics.WS_PATH + "deletePlayList.php");

			List <NameValuePair> nvps = new ArrayList <NameValuePair>();
			nvps.add(new BasicNameValuePair("playlist_id", _playlistId+""));

			httppost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

			HttpResponse response = httpclient.execute(httppost);
			HttpEntity entity = response.getEntity();
			if (entity != null) {
				InputStream instream = entity.getContent();
				BufferedReader reader = new BufferedReader(new InputStreamReader(instream, "UTF-8"));
				String line;
				StringBuilder sb = new StringBuilder("");
				while ((line = reader.readLine()) != null) {
					sb.append(line + "\n");
				}

				res = sb.toString();
				JSONObject obj = new JSONObject(res);
				res = obj.getString("message");
			}
		} catch (UnsupportedEncodingException e1) {
			e1.printStackTrace();
		} catch (ClientProtocolException e1) {
			e1.printStackTrace();
		} catch (IOException e1) {
			e1.printStackTrace();
		} catch(Exception e) {
			e.printStackTrace();
		}
		return res;
	}

	@Override
	protected void onPostExecute(String result) {
		if (dialog != null && dialog.isShowing()) {
			dialog.dismiss();
		}
		super.onPostExecute(result);
	}

	@Override
	protected void onPreExecute() {
		super.onPreExecute();
		dialog.show();
	}

}