【Android】SharedPreferences commit（同步）apply（异步）

最新推荐文章于 2024-08-09 22:40:08 发布

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本文深入探讨了应用与同步持久存储之间的关键区别，特别关注了应用如何立即更新内存中的SharedPreferences，同时启动异步写入到磁盘的过程。重点解释了在进行常规提交操作时，如果另一个编辑器正在对同一SharedPreferences执行应用操作，那么提交操作将被阻塞，直到所有异步写入完成。文章旨在帮助开发者理解这些操作的细微差别及其可能带来的影响。

Unlike commit(), which writes its preferences out to persistent storage synchronously, apply() commits its changes to the in-memory SharedPreferencesimmediately but starts an asynchronous commit to disk and you won't be notified of any failures. If another editor on this SharedPreferences does a regularcommit() while a apply() is still outstanding, the commit() will block until all async commits are completed as well as the commit itself.