Dirk, This is the reason your widget sometimes stops responding to clicking.
Each and every RemoteViews update needs to specify complete state, including data and PendingIntents (if any). The home screen process can be bumped out of memory, and Android uses the most recent RemoteViews to recreate widgets. If it's incomplete and only contains text updates, then pending intents will be lost. Same thing happens on orientation changes - there is no onUpdate(), just the mechanism described above. -- Kostya 2010/5/29 Dirk Vranckaert <[email protected]> > I think String is right about that. I wouldn't do that either just to > save battery life! > > However I think it is better to set the update interval of the applet > to a high enough amount of time (like 24 hours or sth) and just update > the widget manually. I'm currently working on a widget to and in my > case the widget only receives an update upon clicking a certain > button. > > The way I do that is like this: > > RemoteViews rv = new RemoteViews(context.getPackageName(), WIDGET); > rv.setTextViewText(R.id.textField, "Updated value for some text on the > widget"); > ComponentName cn = new ComponentName(context, YourActivity.class); > AppWidgetManager mgr = AppWidgetManager.getInstance(context); > mgr.updateAppWidget(cn, rv); > > That should basically work to update a widget. > Oh and one tip: using the this method you should do all updating just > after the line "rv.setTextViewText(...)". If you execute this entire > block a few times after each other you can get into troubles when > updating the widget. > > Dirk > > On 28 mei, 23:40, String <[email protected]> wrote: > > Before you get too far into this, you need to be aware that the widget > > architecture isn't designed to update that frequently. There's a lot > > of overhead, and updating every ten seconds will seriously impact > > battery life. As will having a service continually running in the > > background, for that matter. > > > > It's a cool idea but I'm not sure it's well suited for a widget, > > unfortunately. > > > > String > > > > On May 28, 2:43 pm, "[email protected]" <[email protected]> wrote: > > > > > > > > > I am currently learning about widgets in Android. > > > > > I want to create a WIFI widget that will display the SSID, the RSSI > > > (Signal) level. > > > > > 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. > > > > > Here is what I have after some reading and a quick tutorial: > > > > > --- > > > > > 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); > > > } > > > > > } > > > > > --- > > > > > The above seems to work ok, it updates the SSID on the widget every 10 > > > seconds. > > > > > 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? > > > > > Also is there a better approach to updating the the widget rather than > > > using a timer and timertask? (Avoid polling) > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
