animator.setFloatValues(height) null pointer exception

[nbadiganti]

java.lang.NullPointerException: Attempt to invoke virtual method 'void android.animation.ObjectAnimator.setFloatValues(float[])' on a null object reference at iammert.com.huelib.HueSeekBar.onMeasure(HueSeekBar.java:179) at android.view.View.measure(View.java:22071) at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715) at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461) at android.view.View.measure(View.java:22071) at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6602) at android.widget.FrameLayout.onMeasure(FrameLayout.java:185) at android.support.v7.widget.CardView.onMeasure(CardView.java:211) at android.view.View.measure(View.java:22071) at android.support.v7.widget.RecyclerView$LayoutManager.measureChildWithMargins(RecyclerView.java:8634) at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1577) at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1511)