code: public void setHighlightedDegree(final float highlightedDegree) {
          this.mHighlightedDegree = highlightedDegree;
  
          mHighlightedMarker = null;
          mHighlightedMarkerPosition = -1;
          // Loop through all markers to see if any of them are highlighted.
          if (mMarkerList != null) {
              final int size = mMarkerList.size();
              for (int i = 0; i < size; i++) {
                  final Marker marker = mMarkerList.get(i);
                  // Only check the marker if the visibility is not "gone"
                  if (marker.getVisibility() != View.GONE) {
                      final boolean markerIsHighlighted = mHighlightedDegree != HIGHLIGHT_NONE && marker.hasInSection(mHighlightedDegree % 360);
                      marker.setHighlighted(markerIsHighlighted);
                      if (markerIsHighlighted) {
                          // Marker is highlighted!
                          mHighlightedMarker = marker;
                          mHighlightedMarkerPosition = i;
                          final boolean highlightAnimationAndAnimateMarker = mIsAnimating && mAnimateMarkersOnHighlightAnimation;
                          final boolean stillAndAnimateMarker = !mIsAnimating && mAnimateMarkersOnStillHighlight;
                          final boolean wantsToAnimateMarker = highlightAnimationAndAnimateMarker || stillAndAnimateMarker;
                          // Animate only if necessary
                          if (wantsToAnimateMarker && !marker.isAnimating()) {
                              marker.animateBounce();
                          }
                      }
                  }
                  // Continue looping through the rest to reset other markers.
              }
          }
          postInvalidate();
      }
docs: Set the degree that will trigger highlighting a marker. You can also set {@link #HIGHLIGHT_NONE} to not highlight any degree.
  See R.styleable#CircularView_highlightedDegree
  
  @param highlightedDegree Value in degrees.