@NonNull Annotation not working in Android Studio

Question

import android.support.annotation.NonNull;

public
@NonNull
Result handleFollowForwardResult(@NonNull Result tempResult, @NonNull Result oldResult) {
    return null;
}

does not give any errors or warning? Isn't the point of the annotation to check for exactly this?

Answer 1

This works in my copy of Android Studio 0.8.11. Try the following:

• If you're running an old version of Android Studio, update.
• Make sure your Inspections > Constant conditions & exceptions inspection is enabled.
• In Inspections > Configure annotations, make sure your Nullable annotations list includes android.support.annotation.Nullable, and your NotNull annotations list includes android.support.annotation.NonNull.