content: package com.rsen.github.loadview.indicator;
  
  import android.animation.Animator;
  import android.animation.ObjectAnimator;
  import android.animation.PropertyValuesHolder;
  import android.graphics.Canvas;
  import android.graphics.Paint;
  import android.graphics.RectF;
  import android.view.animation.LinearInterpolator;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Created by Jack on 2015/10/16.
   */
  public class SquareSpinIndicator extends BaseIndicatorController {
  
      @Override
      public void draw(Canvas canvas, Paint paint) {
          canvas.drawRect(new RectF(getWidth()/5,getHeight()/5,getWidth()*4/5,getHeight()*4/5),paint);
      }
  
      @Override
      public List<Animator> createAnimation() {
          List<Animator> animators=new ArrayList<>();
          PropertyValuesHolder rotation5=PropertyValuesHolder.ofFloat("rotationX",0,180,180,0,0);
          PropertyValuesHolder rotation6=PropertyValuesHolder.ofFloat("rotationY",0,0,180,180,0);
          ObjectAnimator animator=ObjectAnimator.ofPropertyValuesHolder(getTarget(), rotation6,rotation5);
          animator.setInterpolator(new LinearInterpolator());
          animator.setRepeatCount(-1);
          animator.setDuration(2500);
          animator.start();
          animators.add(animator);
          return animators;
      }
  }
  