Cannot Resolve Symbol Appcompatactivity - Support V7 Libraries Aren't Recognized

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

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

Cannot resolve symbol 'AppCompatActivity'

A little addition to other answers here, for anyone having the same error while using the right lib version and the right class.

When I upgraded to

appcompat-v7:22.1.0

In which ActionBarActivity is deprecated and empty and AppCompatActivty is the way to go, due to some glitch in Android Studio, It didn't quite pick up on version change.

i.e. Even though Gradle ran without errors, the IDE itself kept saying
Cannot resolve symbol 'AppCompatActivity' (and it also wasn't available through the Ctrl+N search)

I looked into the .idea/libraries folder and noticed there's no appropriate metafile for the new version of the lib.

So, using the old-reliable File->Invalidate Caches/Restart did the trick. Always try this when you feel something is magically wrong with Android Studio.
And then Disable offline mode and sync.

Cannot resolve symbol 'AppCompatActivity'

A little addition to other answers here, for anyone having the same error while using the right lib version and the right class.

When I upgraded to

appcompat-v7:22.1.0

In which ActionBarActivity is deprecated and empty and AppCompatActivty is the way to go, due to some glitch in Android Studio, It didn't quite pick up on version change.

i.e. Even though Gradle ran without errors, the IDE itself kept saying
Cannot resolve symbol 'AppCompatActivity' (and it also wasn't available through the Ctrl+N search)

I looked into the .idea/libraries folder and noticed there's no appropriate metafile for the new version of the lib.

So, using the old-reliable File->Invalidate Caches/Restart did the trick. Always try this when you feel something is magically wrong with Android Studio.
And then Disable offline mode and sync.

Cannot resolve symbol 'AppCompatActivity'

A little addition to other answers here, for anyone having the same error while using the right lib version and the right class.

When I upgraded to

appcompat-v7:22.1.0

In which ActionBarActivity is deprecated and empty and AppCompatActivty is the way to go, due to some glitch in Android Studio, It didn't quite pick up on version change.

i.e. Even though Gradle ran without errors, the IDE itself kept saying
Cannot resolve symbol 'AppCompatActivity' (and it also wasn't available through the Ctrl+N search)

I looked into the .idea/libraries folder and noticed there's no appropriate metafile for the new version of the lib.

So, using the old-reliable File->Invalidate Caches/Restart did the trick. Always try this when you feel something is magically wrong with Android Studio.
And then Disable offline mode and sync.

Cannot resolve AppCompatActivity after upgrade project from gradle 2.1 to 3.5

If you are going to update gradle version specially 3.1+ than you might need to upgrade support lib version too. its weird but it seems compatibility issues between gradle version and support lib version.

Trouble with AppcompatActivity - error: cannot find symbol class AppCompatActivity

I assume, that you forget to add the dependency to the appcompat support library. Add this to your build.gradle in the app folder:

dependencies {
...
    // Add this line
    implementation 'artifact com.android.support:appcompat-v7:28.0.0-alpha1'
}

However, you should read other tutorials as well because you will proably face more issues, when you don't know how dependencies work in Android. If you create a fresh project in Android Studio, it will create a runnable app for you which is a good point to start off.

EDIT

I re-read your code and the import is incorrect. It must be

    android.support.v7.app.AppCompatActivity

instead of

    android.v7.app.AppCompatActivity

Android Studio: Play Services libraries (GCM & Maps) unresolved (errors) but project is working correctly

Apparently the version I had for GCM and maps was too low. I had to update to a higher version and the unresolved references disappeared. I'm using 11.8.0 right now.

---

Related Topics