我安装了 android studio..它工作正常。现在突然间，所有自动完成功能都不起作用了。我可以在任何地方键入任何内容，无需变量检查，无需功能帮助或检查任何内容。我仍然可以编译该项目，但发生这种情况时会出现错误。
任何人都可以帮我解决这个问题吗？
最佳答案
#1 从(Android Studio 的)Build 菜单中，单击Rebuild Project 选项。
#2 然后，重建完成后，转到文件> 使缓存/重新启动... 并单击使重新启动按钮。
这对我来说确实有效。
来源:https://code.google.com/p/android/issues/detail?id=61844#c4
#1 Rebuild is required, because Android-Studio does simply rely solely on Gradle's build-result (without static-analysis support, at least at time of writing, 2022).
#2 Clearing cache is required, because the previous build-result (before above rebuild) may be indexed, which makes Android Studio ignore latest Gradle build-result
(this is a very good speed optimization, but a very bad Developer-experience as well).There can sometimes be other reasons too, which is why there are many other answers posted here.
关于android-studio - Android Studio - 自动完成和其他功能不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/18370599/