解决 cannot resole symbol R 问题

https://upaae.com/how-to-fix-cannot-resolve-symbol-r-error-in-android-studio/

 

 

Change  Gradle version:

Open your build.gradle file, look for gradle version and change the version. if you are using 5.3 change it to 5.2 and build your project and check if the error is gone.

 

 

修改gradle版本

classpath 'com.android.tools.build:gradle:3.2.1' //3.3.2