How to use PathInterpolatorCompat

I'm trying to use PathInterpolator

from android.support.v4.view.animation.PathInterpolatorCompat

because wo PathInterpolator

n't work in my device API 18, since it was added in API 21.

I downloaded the support repository and included the following in the application directory build.gradle

:

compile "com.android.support:support-v4:21.0.0"

      

        
        
        
      

    

I am trying to use it like this:

PathInterpolator p_interpolator = new PathInterpolator(.5f,1.0f);

      

        
        
        
      

    

However, in Android Studio, it asks to import from: android.view.animation.PathInterpolator

instead of giving me an option for a compatible version.

What do I need to do?

Editor's note: Correct usage PathInterpolatorCompat

(as pointed out by @fernforce in a comment on the accepted answer):

PathInterpolator p_interpolator = PathInterpolatorCompat.create(.5f,1.0f);