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POAsyncTask and Looper.prepare() error
 

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    <p>I have the following code</p> <pre><code>class OverlayTask extends AsyncTask&lt;Void, Void, Void&gt; { @Override public void onPreExecute() { if (sites != null) { myMapView.getOverlays().remove(sites); myMapView.invalidate(); sites = null; } } @Override public Void doInBackground(Void... unused) { grabShipsWithLocation(); return (null); } @Override public void onPostExecute(Void unused) { myMapView.getOverlays().add(sites); myMapView.invalidate(); isLoading = false; } } </code></pre> <p>That seems to work fine on a few test devices but I am seeing a lot of errors appearing on the dev console. I can't seem to work out why and where to put this Looper.prepare(). Is it needed?</p> <pre><code>java.lang.ExceptionInInitializerError at com.test.appname.FinderMain$1.gotLocation(FinderMain.java:286) at com.test.appname.MyLocation$GetLastLocation.run(MyLocation.java:89) at java.util.Timer$TimerImpl.run(Timer.java:289) Caused by: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() at android.os.Handler.&lt;init&gt;(Handler.java:121) at android.os.AsyncTask$InternalHandler.&lt;init&gt;(AsyncTask.java:421) at android.os.AsyncTask$InternalHandler.&lt;init&gt;(AsyncTask.java:421) at android.os.AsyncTask.&lt;clinit&gt;(AsyncTask.java:152) </code></pre> <p>As requested MyLocation.java</p> <pre><code> class GetLastLocation extends TimerTask { @Override public void run() { lm.removeUpdates(locationListenerGps); lm.removeUpdates(locationListenerNetwork); Location net_loc=null, gps_loc=null; if(gps_enabled) gps_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); if(network_enabled) net_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); //if there are both values use the latest one if(gps_loc!=null &amp;&amp; net_loc!=null){ if(gps_loc.getTime()&gt;net_loc.getTime()) locationResult.gotLocation(gps_loc); else locationResult.gotLocation(net_loc); return; } if(gps_loc!=null){ locationResult.gotLocation(gps_loc); //Line 89 return; } if(net_loc!=null){ locationResult.gotLocation(net_loc); return; } locationResult.gotLocation(null); } } </code></pre>
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    1. COWhat does grabShipsWithLocation() do?
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    2. COWhat line is MyLocation.java:89? add a comment to your source.
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    3. COAre you creating/starting the AsyncTask from the main thread?
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