[iOS] pushViewController:animated & popViewControllerAnimated 使用 CATransition 小記

一般常見使用 push＆pop ViewController 時，都是向右進入及向左退出。
若要使用其他效果的過場動畫時，可以搭配 CATransition 這個類別來使用。

需要的 framework：QuartzCore

使用方法：

CATransition *animation = [CATransition animation];

[animation setDuration:0.3];

[animation setType:@"oglFlip"];

[animation setSubtype:kCATransitionFromRight];

[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]];

UIViewController *viewVC = [[UIViewController alloc] initWithNibName:@"UIViewController_iPhone" bundle:nil];

[self.navigationController pushViewController: viewVC animated:NO];

[self.navigationController.view.layer addAnimation:animation forKey:nil];

[viewVC release];

CATransition *animation = [CATransition animation];

[animation setDuration:0.3];

[animation setType:@"oglFlip"];

[animation setSubtype:kCATransitionFromLeft];

[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]];

[self.navigationController.view.layer addAnimation:animation forKey:nil];

[self.navigationController popViewControllerAnimated:YES];

PS:要特別注意，push 與 pop ViewController 的順序有不同。