Change event in Android/custom event

Question

我有一个服务每隔X分钟轮询一次数据，Android上的屏幕可能处于打开/关闭状态，但是，我的服务必须完成其工作以通知主要活动数据已更改（如果主屏幕会更新数据，数据已更改），是否有办法实现？

Answer 1

You can use ContentObserver to achieve it. Register your Activity as ContentObserver, it will get notified whenever there's change in Data (Content).