Unten finden Sie meinen Code. Was ich erwarte, ist der Auslöser von backgroundCallback:
Wie auch immer, die normale Aktualisierung von Elementen in meinem Widget ist korrekt. Nur der Hintergrundrückruf funktioniert nicht
Manifest.xml
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class MyAppHomeWidget : HomeWidgetProvider() {
override fun onReceive(context: Context?, intent: Intent?) {
super.onReceive(context, intent)
}
override fun onUpdate(
context: Context,
appWidgetManager: AppWidgetManager,
appWidgetIds: IntArray,
widgetData: SharedPreferences
) {
appWidgetIds.forEach { appWidgetId ->
val views = RemoteViews(context.packageName, R.layout.my_app_home_widget).apply {
// Open App on Widget Click
val openAppOnClickIntent =
HomeWidgetLaunchIntent.getActivity(context, MainActivity::class.java)
setOnClickPendingIntent(R.id.widget_container, openAppOnClickIntent)
// Swap Title Text by calling Dart Code in the Background
val refreshDataIntent =
HomeWidgetBackgroundIntent.getBroadcast(
context, Uri.parse("myHomeWidget://updateLocationAndForecast")
)
setOnClickPendingIntent(R.id.refreshDataIcon, refreshDataIntent)
// Update widget data
setTextViewText(
R.id.widgetLocation,
widgetData.getString("widgetLocation", "Somewhere")
)
setTextViewText(
R.id.widgetWeatherCondition,
widgetData.getString("widgetWeatherCondition", "Unknown")
)
setTextViewText(
R.id.widgetTemperature,
widgetData.getString("widgetTemperature", "N/A")
)
setTextViewText(R.id.widgetHumidity, widgetData.getString("widgetHumidity", "N/A"))
setTextViewText(R.id.widgetRainProb, widgetData.getString("widgetRainProb", "N/A"))
setTextViewText(R.id.widgetWind, widgetData.getString("widgetWind", "N/A"))
setTextViewText(
R.id.widgetLastUpdateDate,
widgetData.getString("widgetLastUpdateDate", "N/A") ?: "No Title Set"
)
//setTextViewText(R.id.widgetLastUpdateDate, widgetData.getString("widgetLastUpdateDate", "Unknown"))
}
appWidgetManager.updateAppWidget(appWidgetId, views)
}
}
override fun onEnabled(context: Context) {
// Enter relevant functionality for when the first widget is created
}
override fun onDisabled(context: Context) {
// Enter relevant functionality for when the last widget is disabled
}
}
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class HomeWidgetController {
static const String _classname = 'HomeWidgetController';
/// Called when Doing Background Work initiated from Widget
@pragma("vm:entry-point")
static Future backgroundCallback(Uri? data) async {
AppLogger.info(_classname, 'App Widget call with URI: $data');
if (data?.host == 'updateLocationAndForecast') {
}
}
static Future initialize() async {
HomeWidget.setAppGroupId(GlobalVar.widgetGroupId);
await HomeWidget.registerInteractivityCallback(backgroundCallback);
}
}
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WidgetsFlutterBinding.ensureInitialized();
await HomeWidgetController.initialize();