"Cannot find symbol R" error after renaming package name

Question

After renaming my project package name (with Refactor), I got this error:

Error:(7, 44) error: cannot find symbol class R

All of my R usages are invalid. I tried to fix it manually but it doesn't work for me. Invalidate chases/Restart doesn't help me, either.

Answer 1

Try the following :

Try deleting your R.java file , android studio will regenerate it.

Clean Project

Rebuild Project

And check:

Check the AndroidManifest.xml, there's a package attribute on the top-level element

(Well it depends on how you renamed your package name)

Answer 2

Just do the following:

Ensure that the package name at the header of the AndroidManifest file has been renamed to your new package name. This worked for me.

Answer 3

Try to change application Id in build.gradle. Or remove any imports of com.***.R in your activity and let android studio to automatically import for you.

Answer 4

Seems like, you changed the application package name but didn't change the import statements. So look for import statement of class R. It must be like

import <package_name>.R;

If it's not a problem with import statements then look whether the R.java file has generated or not. It generally doesn't get generated if there is a problem with the application layout(xml) files. The R class file is generated only when all your xml layout files are correct.

Clean the project and check.

Answer 5

3 packages you may see as marked, When you edit the package name make sure you change all 3 of them else you may face R error which will prompt you to press alt+enter to name it as ur old package name

Answer 6

Check your AndroidManifest.xml ( com.package1.package2 )

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.package1.package2">

90% of symbol R errors because of that line. When you refactor your old package, mostly cases this package didn't change