android.support.v7.widget.CardView could not be found (Android Studio 1.1 Preview)

Question

I\'m trying to add CardView to my activity as the official sample. But it does

Answer 1

You should add it to your build.gradle:

dependencies {
    ...
    implementation 'com.android.support:cardview-v7:21.+'
    implementation 'com.android.support:recyclerview-v7:21.+'
    ...
}