Android studio not found R.id.****

Question

It has worked fine till now, but I apparently touched something and something happened.
Android Studio did not found R.id.**** and R.layout.****.

What do I need to do to resolve the problem?

Answer 1

我遇到了同样的错误，只是发现我自动导入了android.R。我只需要删除它。

检查文件顶部是否有import android.R。

Answer 2

Try to undo(ctrl+z) whatever you did accidentally or go to build-> rebuild project. or build-> clean project or press ctrl+alt+y.

Answer 3

resync gradle，它会解决这个问题。

Answer 4

我认为由于某些错误，你的R.java没有正确构建。清理项目并检查重建项目时是否有错误。

Answer 5

检查build.gradle（app）。如果页面顶部没有apply plugin: 'kotlin-android-extensions'，请添加它。对我有用。

或键入ID 'kotlin-android-extensions'。