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POWhere to Start Async Task - Android
 

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    <p>I'm still learning Java/Android development and I need some guidance to implement an Async task. I'm mostly unsure of where to start it in my program. I have outlined some code below, could someone show me where and how to implement the task? My app sends GPS coordinates to a database every second and I need a separate task so I don't bog down the main thread and risk an ARN error. Here is my code:</p> <p>This first block is from my main activity. When the button is pressed, a three second countdown is initiated, and when it finishes (onFinish) the user data is sent to one database (<code>SendUserActivity.sendId...</code>, this is actually a class, not an activity, just poorly named) and the app then begins to track the user and send the coordinates to a different database every second (<code>location.startLocation...</code>) (two databases to avoid repeating all of the user's data). </p> <p>MainActivity.java:</p> <pre><code>public void onFinish() { button.setText("SENT"); SendUserActivity.sendId(usr_id1, first, last); location.startLocation(getBaseContext(), usr_id1); </code></pre> <p>This is the second block of code from the <code>LocationActivity</code> class (also a class and not an activity, poor naming again). It requests a location update every second and then posts it to a PHP script that inserts it in a MySQL database. </p> <pre><code>public class LocationActivity { private LocationManager locManager; private LocationListener locListener; public void startLocation(Context context, String usr_id2) { final String usr = usr_id2; //get a reference to the LocationManager locManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE); //checked to receive updates from the position locListener = new LocationListener() { public void onLocationChanged(Location location) { send(location, usr); } public void onProviderDisabled(String provider){ //labelState.setText("Provider OFF"); } public void onProviderEnabled(String provider){ //labelState.setText("Provider ON "); } public void onStatusChanged(String provider, int status, Bundle extras){ //Log.i("", "Provider Status: " + status); } }; locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0, locListener); } public void send(Location loc, String usr_id2) { Log.i("", String.valueOf(loc.getLatitude() + " - " + String.valueOf(loc.getLongitude()))); String lat = String.valueOf(loc.getLatitude()); String lon = String.valueOf(loc.getLongitude()); HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http://example.com/test/example.php"); try { List&lt;NameValuePair&gt; nameValuePairs = new ArrayList&lt;NameValuePair&gt;(2); nameValuePairs.add(new BasicNameValuePair("lat", lat)); nameValuePairs.add(new BasicNameValuePair("lon", lon)); nameValuePairs.add(new BasicNameValuePair("id", usr_id2)); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); httpclient.execute(httppost); } catch (ClientProtocolException e) { // TODO Auto-generated catch block } catch (IOException e) { // TODO Auto-generated catch block } } } </code></pre> <p>To reiterate my question, how would I implement an async task to send the GPS information to the database? I have read about IntentServices, but some have suggested that I use an async task. Either way, let me know where and how to implement one of these; I'd really appreciate it. Thanks!</p>
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    1. CObasically everything that need to wait for external system, outside the phone need to be in Async. For your case is the send() need to be in async.
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