• (void)viewDidLoad {
  [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.

  // UIView 动画
  UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
  button.frame = CGRectMake(0, 200, 200, 100);
  button.backgroundColor = [UIColor redColor];

  [button addTarget:self action:@selector(btnAction:) forControlEvents:UIControlEventTouchUpInside];
  [self.view addSubview:button];

}

-(void)btnAction:(UIButton *)button{
NSLog(@"点击");

// 1. 最简单的UIView动画的实现
     //参数1: 动画持续的时间
     // 参数2 : 动画执行的最终结果
[UIView animateWithDuration:1 animations:^{
    /// 动画执行后View的样子
    // frame, center, bounds, backgroundColor, alpha, hidden, transform
    button.frame = CGRectMake(0, 64, 100, 100);
    button.backgroundColor = [UIColor greenColor];
}];

// 2.
   // 参数3: 动画完成后要做的工作
[UIView animateWithDuration:1 animations:^{
    button.backgroundColor = [UIColor yellowColor];
} completion:^(BOOL finished) {
    NSLog(@"爆炸了");
    [UIView animateWithDuration:3 animations:^{
        button.backgroundColor = [UIColor redColor];
    }];
    
}];

// 3.option mode style type 出现这几个关键字类型基本都是枚举
[UIView animateWithDuration:1 delay:2 options:UIViewAnimationOptionCurveEaseInOut animations:^{
    button.frame = CGRectMake(0, 64, 100, 100);
} completion:^(BOOL finished) {
    NSLog(@"OVER");
}];

//  4.  // 弹动效果
[UIView animateWithDuration:1 delay:0 usingSpringWithDamping:0.1 initialSpringVelocity:0.2 options:UIViewAnimationOptionCurveEaseInOut animations:^{
            button.frame = CGRectMake(0, 64, 100, 100);
} completion:^(BOOL finished) {

}];


// 5.  pop 第三方动画框架

[UIView animateWithDuration:1 animations:^{
    
    // 设置动画的相关属性
    [UIView setAnimationRepeatAutoreverses:YES];
    [UIView setAnimationRepeatCount:2.5];   // 重复次数
    [UIView setAnimationRepeatCount:NSIntegerMax];  // 无数次NSIntegerMax;
    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];    // 设置速度.两边慢, 中间快.
    
    
    button.frame= CGRectMake(0, 64, 100, 100);
}];