2016.01.22 简单动画

//横向、纵向移动
    [UIView animateWithDuration:0.5 animations:^{
        self.aView.frame = CGRectMake(_aView.frame.origin.x, _aView.frame.origin.y + 50, _aView.frame.size.width, _aView.frame.size.height);
    }];
    
    //渐变效果
    [UIView animateWithDuration:0.5 animations:^{
        _aView.alpha = !_aView.alpha;
    }];
    
    //翻页效果
    [UIView beginAnimations:nil context:nil];//开始动画的配置
    [UIView setAnimationDuration:0.5];
    [UIView setAnimationCurve:UIViewAnimationCurveEaseIn];//动画的『节奏』
    [UIView setAnimationTransition:UIViewAnimationTransitionCurlUp forView:_aView cache:NO];
    [UIView commitAnimations];//动画配置完毕，提交动画
    
    //旋转
    [UIView animateWithDuration:0.5 animations:^{
        //只能做一次
//        _aView.transform = CGAffineTransformMakeRotation(M_PI);
        //能多次
        _aView.transform = CGAffineTransformRotate(_aView.transform, M_PI_4);
    }];
    
    //放大效果
    [UIView animateWithDuration:0.5 animations:^{
        _aView.transform = CGAffineTransformMakeScale(2, 2);
    }];
    
    //缩小
    [UIView animateWithDuration:0.5 animations:^{
        _aView.transform = CGAffineTransformScale(_aView.transform, 0.7, 0.7);
    }];

    //平移
    [UIView animateWithDuration:0.5 animations:^{
        _aView.transform = CGAffineTransformTranslate(_aView.transform, 10, 10);
    }];