从服务更新小部件
我正在尝试从服务更新小部件...服务启动一个执行此代码的线程，
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(Worker.this);
RemoteViews remoteViews = new RemoteViews(Worker.this.getPackageName(), R.layout.mywidget);
ComponentName projectWidget = new ComponentName(Worker.this, MyWidget.class);
remoteViews.setTextViewText(R.id.widgetstate, "update");
appWidgetManager.updateAppWidget(projectWidget, remoteViews);
onUpdate 方法仅打印日志，但此日志仅在我创建小部件时打印，而不是每次线程循环时打印。我哪里错了？
提前致谢
I'm trying to update a widget from a service... the service start a thread that execute this code
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(Worker.this);
RemoteViews remoteViews = new RemoteViews(Worker.this.getPackageName(), R.layout.mywidget);
ComponentName projectWidget = new ComponentName(Worker.this, MyWidget.class);
remoteViews.setTextViewText(R.id.widgetstate, "update");
appWidgetManager.updateAppWidget(projectWidget, remoteViews);
the onUpdate method just print a log, but this log is printed only when I create the widget, not everytime the thread cycles... where I'm wrong?
Thanks in advance
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你没有错。您只需更新小部件而不调用
onUpdate()。它只是一个方便的方法，被调用以响应系统广播的ACTION_APPWIDGET_UPDATE。您不必调用它来更新小部件，它也像您在这里所做的那样工作。 1要调用它，您可以发送广播或手动调用它，但从代码结构的角度来看，最好将小部件更新功能保留在一个地方，以便轻松查找内容。
1 看一下
AppWidgetProvider源代码，第 56 行。整个AppWidgetProvider只是一个BroadcastReceiver，它已经为您完成了一些工作 - 并且它确实以相同的方式启动更新。You're not wrong. You just update the widget without calling
onUpdate(). It's just a convinience method that gets called in response to theACTION_APPWIDGET_UPDATEbroadcast by the system. You don't have to call it to update a widget, it also just works like you did here. ¹To invoke it you can send the broadcast or call it by hand though, it's a good idea to keep the widget update functionality in one place from a code structure point of view to find things easily.
¹ Take a look at the
AppWidgetProvidersource, line 56. The wholeAppWidgetProvideris just aBroadcastReceiverthat does some work for you already - and it does start the update in the same way.