content: package com.rsen.github.loadview.indicator;
  
  import android.animation.Animator;
  import android.animation.ObjectAnimator;
  import android.animation.ValueAnimator;
  import android.graphics.Canvas;
  import android.graphics.Paint;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Created by Jack on 2015/10/17.
   */
  public class BallRotateIndicator extends BaseIndicatorController{
  
      float scaleFloat=0.5f;
  
  
      @Override
      public void draw(Canvas canvas, Paint paint) {
          float radius=getWidth()/10;
          float x = getWidth()/ 2;
          float y=getHeight()/2;
  
          canvas.save();
          canvas.translate(x - radius * 2 - radius, y);
          canvas.scale(scaleFloat, scaleFloat);
          canvas.drawCircle(0, 0, radius, paint);
          canvas.restore();
  
          canvas.save();
          canvas.translate(x, y);
          canvas.scale(scaleFloat, scaleFloat);
          canvas.drawCircle(0, 0, radius, paint);
          canvas.restore();
  
          canvas.save();
          canvas.translate(x + radius * 2 + radius, y);
          canvas.scale(scaleFloat, scaleFloat);
          canvas.drawCircle(0,0,radius, paint);
          canvas.restore();
      }
  
      @Override
      public List<Animator> createAnimation() {
          List<Animator> animators=new ArrayList<>();
          ValueAnimator scaleAnim=ValueAnimator.ofFloat(0.5f,1,0.5f);
          scaleAnim.setDuration(1000);
          scaleAnim.setRepeatCount(-1);
          scaleAnim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
              @Override
              public void onAnimationUpdate(ValueAnimator animation) {
                  scaleFloat = (float) animation.getAnimatedValue();
                  postInvalidate();
              }
          });
          scaleAnim.start();
  
          ObjectAnimator rotateAnim=ObjectAnimator.ofFloat(getTarget(),"rotation",0,180,360);
          rotateAnim.setDuration(1000);
          rotateAnim.setRepeatCount(-1);
          rotateAnim.start();
  
          animators.add(scaleAnim);
          animators.add(rotateAnim);
          return animators;
      }
  
  
  }
  