Android 小部件刷新 [英] Android Widget Refresh

问题描述

我已经实现了一个小部件，但在刷新它时遇到了问题.我得到最初的 onUpdate ，如果我把它搁置了很长时间.

I have implemented a widget but have problems refreshing it. I get the initial onUpdate , and again if I leave it for ages.

但是，我希望主应用程序中的更改自动反映在小部件上.我如何让它刷新?有没有办法从我的活动中调用小部件(我只是做一个静态例程)，或者有没有办法在每次手机返回主屏幕时强制调用我的onUpdate"?

However I want changes in my main application to be automatically reflected on the widget. How do I get that to refresh ? Is there a way of calling the widget from my Activity (do I just do a static routine) or is there a way I can force my "onUpdate" to be called each time the phone returns back to the home screen ?

推荐答案

您是否使用服务来实现您的小部件来更新 RemoteViews?如果是这样，您可以使用 Intent 启动该服务，并且小部件将更新.

Did you implement your widget using a service to update the RemoteViews? If so you can kick off that service with an Intent and the widget will update.

Intent widgetUpdateIntent = new Intent(context, MyClassName.UpdateService.class);
context.startService(widgetUpdateIntent );

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