从RemoteViews查看实例

RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.widget_layout);

remoteViews.setTextViewText(R.id.textView, "Hello World!");
remoteViews.setImageViewResource(R.id.imageView, R.drawable.example_image);

AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(this);
appWidgetManager.updateAppWidget(appWidgetId, remoteViews);

AppWidgetHost appWidgetHost = new AppWidgetHost(this, 1001);
int appWidgetId = appWidgetHost.allocateAppWidgetId();
AppWidgetProviderInfo appWidgetProviderInfo = appWidgetManager.getAppWidgetInfo(appWidgetId);
appWidgetHost.startListening();
appWidgetHost.createView(this, appWidgetId, appWidgetProviderInfo);

remoteViews.setTextViewText(R.id.textView, "New Text!");
appWidgetManager.updateAppWidget(appWidgetId, remoteViews);

appWidgetHost.deleteAppWidgetId(appWidgetId);
appWidgetHost.stopListening();