汤姆猫效果 - OC

• (IBAction) drink{

  //1.把图片加载到数组中
  NSMutableArray *arrayM = [NSMutableArray array];

  for (int i = 0; i < 81; i++) {

    NSString *imgName = [NSString stringWithFormat:@"drink_%02d",i];
    
    UIImage *imgCat = [UIImage imageNamed:imgName];
    
    [arrayM addObject:imgCat];
  

  }

  //2.设置UIImageView的animationImages为对应图片合集
  self.imgViewCat.animationImages = arrayM;

  //3.动画持续时间
  self.imgViewCat.animationDuration = self.imgViewCat.animationImages.count *0.1;

  //4.重复次数
  self.imgViewCat.animationRepeatCount = 1;

  //5.启动动画
  [self.imgViewCat startAnimating];
  }