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

最新推荐文章于 2024-08-09 22:40:08 发布

tuhuolong

最新推荐文章于 2024-08-09 22:40:08 发布

阅读量5.1k

点赞数

CC 4.0 BY-SA版权

分类专栏： Android

本文链接：https://blog.youkuaiyun.com/tuhuolong/article/details/20644501

Android 专栏收录该内容

382 篇文章

订阅专栏

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。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

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.