can't resolve AppCompatActivity

Question

After renaming application package name, Android Studio displayed this error can\'t resolve symbol AppCompatActivity

Things I tried: <

Answer 1

I was stuck with this problem and its take me whole day to solve this.Finally i solved this with the following steps

1. Close your android studio
2. Go to you project folder and look for .idea folder
3. Find libraries folder and rename it
4. Then start your Android studio and open that project again.

Thats it.