app store Today转场动画，数据展示为豆瓣电影今日热映电影数据。
App Store今日页面转场动画粗糙的模仿了一下。为了让页面看起来不那么单调，数据用了豆瓣电影今日热映的公开接口，城市使用的是当前定位城市，如果没有定位成功，就访问默认数据。
(gif可能有点大加载稍慢（6.6M）)
下面是核心代码：
第一部分：列表页点击cell的缩放效果在列表页didselectRowAtIndexPath中实现
DouTodayFilmCell *cell = [tableView cellForRowAtIndexPath:indexPath];
cell.transform = CGAffineTransformMakeScale(0.9, 0.9);第二部分：push转场动画在 TodayTransition的pushAnimateTransition:中实现，这里有一个细节，在toView用一个临时图片承接前面图片magic move动画的下半段，在数据接收完成以后隐藏临时图片
- (void)pushAnimateTransition:(id <UIViewControllerContextTransitioning>)transitionContext{
DouTodayViewController *fromVC = (DouTodayViewController *)[transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
DouTodayFilmCell *cell = (DouTodayFilmCell *)[fromVC.tableView cellForRowAtIndexPath:[fromVC.tableView indexPathForSelectedRow]];
UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
UIView *toView = [toVC valueForKeyPath:@"headerImageView"];
UIView *fromView = cell.bgView;
UIView *containerView = [transitionContext containerView];
UIView *snapShotView = [[UIImageView alloc]initWithImage:cell.bgimageView.image];
snapShotView.frame = [containerView convertRect:fromView.frame fromView:fromView.superview];
fromView.hidden = YES;
toVC.view.frame = [transitionContext finalFrameForViewController:toVC];
toVC.view.alpha = 0;
toView.hidden = YES;
UILabel *titleLabel = [[UILabel alloc]initWithFrame:CGRectMake(15, 20, SCREEN_WIDTH-30, 30)];
titleLabel.textColor = [UIColor whiteColor];
titleLabel.textAlignment = NSTextAlignmentLeft;
titleLabel.font = [UIFont boldSystemFontOfSize:25.f];
titleLabel.text = cell.titleLabel.text;
UILabel *contentLabel = [[UILabel alloc]initWithFrame:CGRectMake(15, (SCREEN_WIDTH-40)*1.3-30, SCREEN_WIDTH-44, 15)];
contentLabel.font = [UIFont fontWithName:@"PingFangSC-Light" size:15.f];
contentLabel.textColor = [UIColor whiteColor];
contentLabel.textAlignment = NSTextAlignmentLeft;
contentLabel.alpha = 0.5;
contentLabel.text =cell.contentLabel.text;
[snapShotView addSubview:titleLabel];
[snapShotView addSubview:contentLabel];
[containerView addSubview:toVC.view];
[containerView addSubview:snapShotView];
[UIView animateWithDuration:0.6f animations:^{
if (IPHONE_X) {
[DzwSingleton sharedInstance].tabBarVC.tabBar.frame = CGRectMake(0, SCREEN_HEIGHT, SCREEN_WIDTH, 83);
} else {
[DzwSingleton sharedInstance].tabBarVC.tabBar.frame = CGRectMake(0, SCREEN_HEIGHT, SCREEN_WIDTH, 49);
}
[DzwSingleton sharedInstance].tabBarVC.tabBar.transform = CGAffineTransformMakeScale(1, 1.1);
}completion:^(BOOL finished) {
[DzwSingleton sharedInstance].tabBarVC.tabBar.transform = CGAffineTransformMakeScale(1, 1);
}];
[UIView animateWithDuration:[self transitionDuration:transitionContext] delay:0.0f usingSpringWithDamping:0.6f initialSpringVelocity:1.0f options:UIViewAnimationOptionCurveLinear animations:^{
[containerView layoutIfNeeded];
toVC.view.alpha = 1.0f;
snapShotView.frame = [containerView convertRect:toView.frame fromView:toView.superview];
titleLabel.frame = CGRectMake(22, 30, SCREEN_WIDTH-30, 30);
contentLabel.frame = CGRectMake(22, SCREEN_WIDTH*1.3-30, SCREEN_WIDTH*1.3-44, 15);
} completion:^(BOOL finished) {
toView.hidden = NO;
fromView.hidden = NO;
[snapShotView removeFromSuperview];
// [fromVC.tableView reloadData];
[transitionContext completeTransition:!transitionContext.transitionWasCancelled];
}];
}第三部分：pop转场动画 TodayTransition的popAnimateTransition:中实现
- (void)popAnimateTransition:(id <UIViewControllerContextTransitioning>)transitionContext{
DouTodayViewController *todayVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
DouFilmInfoViewController *infoVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
UIView *containerView = [transitionContext containerView];
UIView *fromView = [infoVC valueForKeyPath:@"headerImageView"];
todayVC.view.frame = [transitionContext finalFrameForViewController:todayVC];
DouTodayFilmCell *cell = (DouTodayFilmCell *)[todayVC.tableView cellForRowAtIndexPath:infoVC.selectIndexPath];
UIView *originView = cell.bgimageView;
UIView *snapShotView = [fromView snapshotViewAfterScreenUpdates:NO];
snapShotView.layer.masksToBounds = YES;
snapShotView.layer.cornerRadius = 15;
snapShotView.frame = [containerView convertRect:fromView.frame fromView:fromView.superview];
fromView.hidden = YES;
originView.hidden = YES;
[containerView insertSubview:todayVC.view belowSubview:infoVC.view];
[containerView addSubview:snapShotView];
UILabel *titleLabel = [[UILabel alloc]init];
titleLabel.textColor = [UIColor whiteColor];
titleLabel.textAlignment = NSTextAlignmentLeft;
titleLabel.font = [UIFont boldSystemFontOfSize:25.f];
titleLabel.text = infoVC.titles;
UILabel *contentLabel = [[UILabel alloc]init];
contentLabel.font = [UIFont fontWithName:@"PingFangSC-Light" size:15.f];
contentLabel.textColor = [UIColor whiteColor];
contentLabel.textAlignment = NSTextAlignmentLeft;
contentLabel.text =infoVC.titleTwo;
contentLabel.alpha = 0.5;
titleLabel.frame = CGRectMake(22, 20, SCREEN_WIDTH-30, 30);
contentLabel.frame = CGRectMake(22, SCREEN_WIDTH*1.3-30, SCREEN_WIDTH*1.3-44, 15);
[snapShotView addSubview:titleLabel];
[snapShotView addSubview:contentLabel];
[UIView animateWithDuration:0.6f animations:^{
if (IPHONE_X) {
[DzwSingleton sharedInstance].tabBarVC.tabBar.frame = CGRectMake(0, SCREEN_HEIGHT-83, SCREEN_WIDTH, 83);
} else {
[DzwSingleton sharedInstance].tabBarVC.tabBar.frame = CGRectMake(0, SCREEN_HEIGHT-49, SCREEN_WIDTH, 49);
}
[DzwSingleton sharedInstance].tabBarVC.tabBar.transform = CGAffineTransformMakeScale(1, 1.05);
}completion:^(BOOL finished) {
[DzwSingleton sharedInstance].tabBarVC.tabBar.transform = CGAffineTransformMakeScale(1, 1);
}];
[UIView animateWithDuration:[self transitionDuration:transitionContext] delay:0 usingSpringWithDamping:0.5f initialSpringVelocity:1.f options:UIViewAnimationOptionCurveEaseOut animations:^{
[containerView layoutIfNeeded];
infoVC.view.alpha = 0.0f;
snapShotView.layer.cornerRadius = 15;
infoVC.tableView.frame = CGRectMake(infoVC.tableView.frame.origin.x, infoVC.tableView.frame.origin.y, infoVC.tableView.frame.size.width,SCREEN_WIDTH*1.3*0.8);
infoVC.tableView.layer.cornerRadius = 15;
snapShotView.frame = [containerView convertRect:originView.frame fromView:originView.superview];
titleLabel.frame = CGRectMake(15, 20, SCREEN_WIDTH-30, 30);
contentLabel.frame = CGRectMake(15, (SCREEN_WIDTH-40)*1.3-30, SCREEN_WIDTH-44, 15);
} completion:^(BOOL finished) {
fromView.hidden = YES;
[snapShotView removeFromSuperview];
originView.hidden = NO;
[transitionContext completeTransition:![transitionContext transitionWasCancelled]];
}];
}