android - 检查 realmObject 是否已更新

Question

documentation对于 realmObject.isValid() 说:

isValid() Checks if the realmObject is still valid to use i.e., the realmObject hasn't been deleted nor has the Realm been closed.

但是，对于已在另一个线程中更新的 realmObject，isValid() 会返回什么？

Realm 会更新当前线程(非更新线程)中保存的 realmObject 还是将其视为无效？

文档似乎没有提供答案。

Answer 1

多线程

Will realm update the realmObject held in the current thread (non updating thread)?

答案是YES，如果在给定线程上启用了自动更新，这需要一个 Looper。这在 Threading 中有描述。部分:

There’s actually very little you need to know, or do, when working with various threads with Realm. The key takeaway here is that Realm makes it effortless to work with data on multiple threads without having to worry about consistency or performance because objects and queries are auto-updating at all times.

更新状态

But, what would isValid() return for a realmObject which has been updated in another thread?

您可以添加更新监听器，它会在数据更新时通知您的 UI 组件(例如)。这在 Notification 中有描述。部分。