我的博客：iOS使用系统的导航栏，自定义滑动返回手势与转场动画<br />
//自定义滑动返回手势与动画
//自定义转场动画
- (nullable id <UIViewControllerAnimatedTransitioning>)navigationController:(UINavigationController *)navigationController animationControllerForOperation:(UINavigationControllerOperation)operation fromViewController:(UIViewController *)fromVC toViewController:(UIViewController *)toVC{
if (operation == UINavigationControllerOperationPush) {//push动画
if(self.presentTransition){
Class transition = NSClassFromString(self.presentTransition);
return [transition new];
}
}
else if (operation == UINavigationControllerOperationPop) {//pop动画
if(self.dismissTransition){
Class transition = NSClassFromString(self.dismissTransition);
return [transition new];
}
}
return nil;
}