Android AppWidget not receiving APPWIDGET
I'm trying to create my first AppWidget using the AlarmManager class so that I can update more frequently than every 30 minutes. I followed this tutorial as a basis for setting up my widget, but for some reason I cannot get the updates to begin properly. It appears as I am never receiving any APPWIDGET_ENABLED intents, which would fire off the onEnabled event callback in my AppWidgetProvider.
Here is the manifest definition for my AppWidgetProvider:
<receiver
android:name="com.myapp.android.appwidget.MarketTimingAppWidgetProvider"
android:label="@string/appwidget_markettiming_label">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
<action android:name="@string/appwidget_markettiming_updateintent" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="@xml/appwidget_markettiming_info" />
</receiver>
Here is the code for my AppWidgetProvider:
public class MarketTimingAppWidgetProvider extends AppWidgetProvider {
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
final int N = appWidgetIds.length;
Log.d("myLogger", "onUpdate");
// Perform this loop procedure for each App Widget that belongs to this provider
for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i];
Log.d("myLogger", "Updating Widget: " + appWidgetId);
updateWidget(context, appWidgetManager, appWidgetId);
}
}
@Override
public void onEnabled(Context context) {
super.onEnabled(context);
Log.d("myLogger", "onEnabled running");
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.SECOND, 1);
alarmManager.setRepeating(AlarmManager.RTC, calendar.getTimeInMillis(),
1000, createClockIntent(context));
}
public void onDisabled(Context context) {
super.onDisabled(context);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.cancel(createClockIntent(context));
}
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
Log.d("myLogger", "Intent Received " + intent.getAction());
String widgetIntent = context.getResources().getString(R.string.appwidget_markettiming_updateintent);
// This code fires when my custom intent is received
if(widgetIntent.equals(intent.getAction())) {
ComponentName thisAppWidget = new ComponentName(context.getPackageName(), getClass().getName());
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
int ids[] = appWidgetManager.getAppWidgetIds(thisAppWidget);
for(int appWidgetId: ids) {
updateWidget(context, appWidgetManager, appWidgetId);
}
}
}
private void updateWidget(Context context, AppWidgetManager appWidgetManager, int appWidgetId) {
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.appwidget_markettiming);
views.setTextViewText(R.id.widget_text, "Update: " +
DateFormat.getDateTimeInstance(
DateFormat.LONG, DateFormat.LONG).format(new Date()));
// Tell the AppWidgetManager to perform an update on the current app widget
appWidgetManager.updateAppWidget(appWidgetId, views);
}
private PendingIntent createClockIntent(Context context) {
String updateIntent = context.getResources().getString(R.string.appwidget_markettiming_updateintent);
Log.d("myLogger", "my intent: " + updateIntent);
Intent intent = new Intent(updateIntent);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
return pendingIntent;
}
}
When I look in LogCat the only intent that is ever recieved by my onReceive method is the initial APPWIDGET_UPDATE intent, and the only callback ever executed is the onUpdate callback. I've tried including the APPWIDGET_ENABLED intent in my appwidget intent-filter (although the docs tell me that this should be automatically received by my widget). It didn't work. Is there just something I'm missing here?
There is an error in your manifest. Action name in this element:
<action android:name="@string/appwidget_markettiming_updateintent" />
should be replaced by actual string, not the reference. So it should be something like this:
<action android:name="com.myapp.android.appwidget.action.MARKETTIMING_UPDATE" />
or whatever you have in your values/something.xml inside the <string name="appwidget_markettiming_updateintent"> element.
The problem is that the BroadcastReceiver does not receives the broadcasts from AlarmManager. I've created a project with your code, replaced only this string in manifest (and added the appropriate value to values/strings.xml of course) and all works fine.
In addition, you may want to replace the second parameter of alarmManager.setRepeating() by just System.currentTimeMillis() + 1000 and remove all those extra Calendar-related stuff.
Apparently uninstalling it from the emulator and then re-installing it did the trick. Now when I add a widget the APPWIDGET_ENABLE intent is received, and when I remove it the APPWIDGET_DISABLED intent is fired like I would expect. I'm still having an issue where the alarm manager does not actually fire off my custom Intent like I expect, but that's a separate issue I'll need to research.
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