如果将 JVM 想象为基于堆栈的处理器，则其中大多数是容易理解的，因此我在这里就不再详细说明了。
Most of these should be easy to understand if you think in terms of the JVM as a stack-based processor, so I won't go into details here.
如果要扩展从本文学到的内容，可以通过加入对关系型更新数据源更详细的错误处理来增强小部件。
To try and expand on what you learned from this article, you could enhance the widget with more elaborate failure handling for the relational update feed.
这让用户更加清楚地了解哪些通知待处理，以及如果他们对此足够感兴趣那么他们就会在相关应用中进行详细的阅读。
This allows users to gain a better sense of which notifications are pending and if they are interesting enough to be read in detail within the associated app.
应用推荐