Cannot resolve symbol AppCompatActivity - Support v7 libraries aren't recognized?

Question

I\'m trying to figure out why the heck my Android studio isn\'t recognizing the AppCompat v7 library correctly. The import statement below shows up as gray and says there\'s

Answer 1

1.Delete the .idea folder
2.Close and reopen the project
3.File - > Sync Project With Gradle Files

This worked for me

Answer 2

The issue could be import reference,
try changing it. From:

import android.support.v7.app.AppCompatActivity;

To:

import androidx.appcompat.app.AppCompatActivity;

Answer 3

I just commented it and used androidx and now it's working all good!

import androidx.appcompat.app.AppCompatActivity;
// import android.support.v7.app.AppCompatActivity;

Answer 4

Okay, I fixed it by rebuilding it for doing a ./gradlew clean assemble for the fourth time... Android Studio is a weird thing

Answer 5

If the given solutions does not work, create a new project with 'KOTLIN' as the language even if your work is on java. Then replace the 'main' folder of the new project with the 'main' folder of the old.

Answer 6

If you have already tried

1. Invalidating caches and restarting
2. Cleaning/rebuilding the project
3. ./gradlew clean assemble
4. added implementation
   "com.android.support:support-v4:23.1.1"
   "com.android.support:appcompat-v7:23.1.1"
   "com.android.support:support-annotations:23.1.1"
5. Corrected import to android.support.v7.app.AppCompatActivity;
6. Corrected any existing androidx imports

Still facing issue then please read below

Finally found the solution

I tried everything mentioned in all the answers and failed.

Go to gradle.properties make these flags false

android.useAndroidX=false

//Automatically convert third-party libraries to use AndroidX

android.enableJetifier=false

The above flags were

"true ,for me and hence gradle won't download v7 components"