我的iOS动画01

1.嵌套使用，先变大再消失

[UIView animateWithDuration:1.25 aniamtions:^{

        CGAffineTransform newTRansform = CGAffineTransformMakeScale(1.2, 1.2);

        [firstImageView setTransform:newTransform];

        [secondImageView setTransform:newTransform];

        completion:^(BOOL finished){

                [UIView animateWithDuration:1.2 animations:^{

                        [firstImageView setAlpha:0];

                        [secondImageView setAlpha:0];

                }

                completion:^(BOOL finished){

                        [firstImageView removeFromSuperview];

                        [secondImageView removeFromSuperview];

                }

                ];

        }

];

ios 怎么设置动画让一个view从底部弹出来：

首先设置一个VIEW初始位置在屏幕下, 比如iPhone6:CGRectMake(0, 667, 375, 667);

然后在一个方法中(比如button出发的方法)view添加动画

[UIView animateWithDuration:0.5 animations:^{

        // 设置view弹出来的位置

        self.myView.frame = CGRectMake(40, 100, 200, 250);

}];