Android Studio Project doesn't recognise FACEBOOK SESSION and other Imports?

I have an existing Project made in Eclipse. I imported this project in Android Studio.

After importing I made dependencies and repositories for Facebook.

But it doesn't recognize Facebook.Session

dependencies {
    compile 'com.google.android.gms:play-services:6.5.87'
    compile 'com.android.support:support-v4:22.0.0'
    compile files('libs/Parse-1.9.1.jar')
    compile files('libs/android-viewbadger.jar')
    compile 'com.facebook.android:facebook-android-sdk:4.0.0'
}


allprojects {
    repositories {
        jcenter()
        mavenCentral()
    }
}

What and how should I add to remove these imports issues.

Thanks