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POHow to update a Widget dynamically (Not waiting 30 min for onUpdate to be called)?
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  1. POHow to update a Widget dynamically (Not waiting 30 min for onUpdate to be called)?
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    copied!<p>I am currently learning about widgets in Android.</p> <p>I want to create a WIFI widget that will display the SSID, the RSSI (Signal) level.</p> <p>But I also want to be able to send it data from a service I am running that calculates the Quality of Sound over wifi.</p> <p>Here is what I have after some reading and a quick tutorial:</p> <hr> <pre><code>public class WlanWidget extends AppWidgetProvider{ RemoteViews remoteViews; AppWidgetManager appWidgetManager; ComponentName thisWidget; WifiManager wifiManager; public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { Timer timer = new Timer(); timer.scheduleAtFixedRate(new WlanTimer(context, appWidgetManager), 1, 10000); } private class WlanTimer extends TimerTask{ RemoteViews remoteViews; AppWidgetManager appWidgetManager; ComponentName thisWidget; public WlanTimer(Context context, AppWidgetManager appWidgetManager) { this.appWidgetManager = appWidgetManager; remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget); thisWidget = new ComponentName(context, WlanWidget.class); wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE); } @Override public void run() { remoteViews.setTextViewText(R.id.widget_textview, wifiManager.getConnectionInfo().getSSID()); appWidgetManager.updateAppWidget(thisWidget, remoteViews); } } </code></pre> <hr> <p>The above seems to work ok, it updates the SSID on the widget every 10 seconds.</p> <p>However what is the most efficent way to get the information from my service that will be already running to update periodically on my widget?</p> <p>Also is there a better approach to updating the the widget rather than using a timer and timertask? (Avoid polling)</p> <p><strong>UPDATE</strong></p> <p>As per Karan's suggestion I have added the following code in my Service:</p> <hr> <pre><code>RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget); ComponentName thisWidget = new ComponentName( context, WlanWidget.class ); remoteViews.setTextViewText(R.id.widget_QCLevel, " " + qcPercentage); AppWidgetManager.getInstance( context ).updateAppWidget( thisWidget, remoteViews ); </code></pre> <hr> <p>This gets run everytime the RSSI level changes but it still never updates the TextView on my widget, any ideas why?</p> <p><strong>EDIT</strong></p> <p>Got it working, thanks Karan</p>
 

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