本文实例为大家分享了iOS仿AirPods弹出动画的具体代码,供大家参考,具体内容如下
效果图
预览图
思路
在当前ViewController下Present另外一个AnimationViewController,在弹出的AnimationViewController中播放动画,弹出的时候原来的ViewController上有一个全屏覆盖的maskView,在弹出时,有一个渐变动画(页面渐黑),在AnimationViewController声明一个代理,在代理方法中实现收起的动画效果(dissmissController和maskView消失)
主要代码
HCAirPodsAnimationViewController *vc = [[HCAirPodsAnimationViewController alloc] init];
vc.delegate = self;
vc.modalPresentationStyle = UIModalPresentationOverCurrentContext;
[UIView animateWithDuration:0.2 animations:^{
self.maskBgView.alpha = 0.5;
} completion:nil];
[self presentViewController:vc animated:YES completion:^{
[vc.animationView play];
}];
模态跳转的style有一个枚举值,在iOS13以前modalPresentationStyle的默认值为UIModalPresentationFullScreen,iOS13以后变成了UIModalPresentationPageSheet,在这里我们把style设置为UIModalPresentationOverCurrentContext弹出的这个控制器就会覆盖在原来的控制器之上
- (UIView *)maskBgView
{
if (!_maskBgView) {
_maskBgView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height)];
_maskBgView.backgroundColor = [UIColor blackColor];
_maskBgView.alpha = 0;
[self.view addSubview:_maskBgView];
}
return _maskBgView;
}
一个覆盖全屏的maskView采用懒加载的方式实现
- (void)initContentView
{
CGFloat containerW = SCREEN_WIDTH - 20;
CGFloat containerH = containerW * 0.9;
UIView *containerView = [[UIView alloc] initWithFrame:CGRectMake(10, SCREEN_HEIGHT - containerH - 10, containerW, containerH)];
containerView.layer.cornerRadius = 20;
containerView.backgroundColor = [UIColor whiteColor];
[self.view addSubview:containerView];
self.animationView = [[LOTAnimationView alloc] initWithFrame:CGRectMake(70, 70, containerW - 140, containerH - 140)];
[containerView addSubview:self.animationView];
self.animationView.animation = @"gift_animation";
self.animationView.loopAnimation = YES;
UIButton *confirmButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 200, 34)];
confirmButton.center = CGPointMake(self.animationView.center.x, containerH - 44);
[confirmButton setTitle:@"Close" forState:UIControlStateNormal];
[confirmButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[confirmButton setBackgroundColor:[UIColor blueColor]];
confirmButton.layer.cornerRadius = 10;
[confirmButton addTarget:self action:@selector(onConfirmButtonClick) forControlEvents:UIControlEventTouchUpInside];
[containerView addSubview:confirmButton];
}
动画这里用到的是Lottie这个动画开源库(Airbnb),这个开源库主要的功能是可以将After Effects制作的动画通过插件导出为json格式的文件,然后通过这个开源库解析成动画。
- (void)onConfirmButtonClick
{
if ([self.delegate respondsToSelector:@selector(onAirPodsAnimationViewControllerConfirmButtonClick:)]) {
[self dismissViewControllerAnimated:YES completion:nil];
[self.delegate onAirPodsAnimationViewControllerConfirmButtonClick:self];
}
}
dissmiss当前的控制器,让viewController来实现这个代理方法,并且在代理方法中隐藏maskView
- (void)onAirPodsAnimationViewControllerConfirmButtonClick:(HCAirPodsAnimationViewController *)vc
{
[UIView animateWithDuration:0.2 animations:^{
self.maskBgView.alpha = 0.0;
} completion:nil];
}
项目地址:AirPodsAnimation
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