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POHow to notify application user whenever i add something to remote database?
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  1. POHow to notify application user whenever i add something to remote database?
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    copied!<p>I have developed my first android application. What that application does: I update mysql database with new results on the website and the android application fetches the same data from mysql. I am using JSON.</p> <p>What i want it to do: I want it to notify user that the results have been updated. It can bee a timely notification or the normal one. It does not matter. I just want the user to know about it as soon as i update database.</p> <p>Code for your reference: 1) Java code that displays results inside the application.</p> <pre><code> package in.thespl.spl.notifications; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import org.apache.http.NameValuePair; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.app.ListActivity; import android.app.ProgressDialog; import android.content.Intent; import android.os.AsyncTask; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ListAdapter; import android.widget.ListView; import android.widget.SimpleAdapter; import android.widget.TextView; public class AllResultsActivity extends ListActivity { // Progress Dialog private ProgressDialog pDialog; // Creating JSON Parser object JSONParser jParser = new JSONParser(); ArrayList&lt;HashMap&lt;String, String&gt;&gt; productsList; // url to get all products list private static String url_all_products = "http://mydomain.in/fetchresult.php"; // JSON Node names private static final String TAG_SUCCESS = "success"; private static final String TAG_PRODUCTS = "result"; private static final String TAG_PID = "rid"; private static final String TAG_NAME = "rname"; private static final String TAG_INFO = "rinfo"; // products JSONArray JSONArray products = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.all_products); // Hashmap for ListView productsList = new ArrayList&lt;HashMap&lt;String, String&gt;&gt;(); // Loading products in Background Thread new LoadAllProducts().execute(); // Get listview ListView lv = getListView(); // on seleting single product // launching Edit Product Screen lv.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView&lt;?&gt; parent, View view, int position, long id) { // getting values from selected ListItem String pid = ((TextView) view.findViewById(R.id.rid)).getText() .toString(); // Starting new intent Intent in = new Intent(getApplicationContext(), AllResultsActivity.class); // sending pid to next activity in.putExtra(TAG_PID, pid); // starting new activity and expecting some response back startActivityForResult(in, 100); } }); } // Response from Edit Product Activity @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); // if result code 100 if (resultCode == 100) { // if result code 100 is received // means user edited/deleted product // reload this screen again Intent intent = getIntent(); finish(); startActivity(intent); } } /** * Background Async Task to Load all product by making HTTP Request * */ class LoadAllProducts extends AsyncTask&lt;String, String, String&gt; { /** * Before starting background thread Show Progress Dialog * */ @Override protected void onPreExecute() { super.onPreExecute(); pDialog = new ProgressDialog(AllResultsActivity.this); pDialog.setMessage("Loading results. Please wait..."); pDialog.setIndeterminate(false); pDialog.setCancelable(false); pDialog.show(); } /** * getting All products from url * */ protected String doInBackground(String... args) { // Building Parameters List&lt;NameValuePair&gt; params = new ArrayList&lt;NameValuePair&gt;(); // getting JSON string from URL JSONObject json = jParser.makeHttpRequest(url_all_products, "GET", params); // Check your log cat for JSON reponse Log.d("All Products: ", json.toString()); try { // Checking for SUCCESS TAG int success = json.getInt(TAG_SUCCESS); if (success == 1) { // products found // Getting Array of Products products = json.getJSONArray(TAG_PRODUCTS); // looping through All Products for (int i = 0; i &lt; products.length(); i++) { JSONObject c = products.getJSONObject(i); // Storing each json item in variable String id = c.getString(TAG_PID); String name = c.getString(TAG_NAME); String info = c.getString(TAG_INFO); // creating new HashMap HashMap&lt;String, String&gt; map = new HashMap&lt;String, String&gt;(); // adding each child node to HashMap key =&gt; value map.put(TAG_PID, id); map.put(TAG_NAME, name); map.put(TAG_INFO, info); // adding HashList to ArrayList productsList.add(map); } } else { // no products found // Launch Add New product Activity // Intent i = new Intent(getApplicationContext(), // AllResultsActivity.class); // Closing all previous activities //i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); // startActivity(i); } } catch (JSONException e) { e.printStackTrace(); } return null; } /** * After completing background task Dismiss the progress dialog * **/ protected void onPostExecute(String file_url) { // dismiss the dialog after getting all products pDialog.dismiss(); // updating UI from Background Thread runOnUiThread(new Runnable() { public void run() { /** * Updating parsed JSON data into ListView * */ ListAdapter adapter = new SimpleAdapter( AllResultsActivity.this, productsList, R.layout.list_item, new String[] { TAG_PID, TAG_NAME, TAG_INFO }, new int[] { R.id.rid, R.id.rname, R.id.rinfo}); // updating listview setListAdapter(adapter); } }); } } } </code></pre> <p>Any idea how to add a notification feature in this?</p>
 

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