show/hide the tabbar when needed from a view controller - ios

Question

i am new to iOS programming. i really need your help.
i have a login screen that takes me to a map (google API). on clicking any created annotation i want to load a tabbar with 2 views.
i searched and found out that i need to add the tabbar at the starting ie the appdelegate and show/hide the tabbar when needed.
so i made 2 functions to show and hide tabbar as
-(void)Load_tabBar{
[self.navigationController.view removeFromSuperview];
[self.window addSubview:tabBarController.view];
[self.window makeKeyWindow];}
-(void)remove_tabBar{
self.tabBarController.selectedIndex=0;
[self.tabBarController.view removeFromSuperview];
[self.window addSubview:navigationController.view];
[self.window makeKeyWindow];}
it did work when i call the Load_tabBar method and when i click back it calls remove_tabBar method. if i again call Load_tabBar method and back, it crashes giving error
-[UILayoutContainerView window]: message sent to deallocated instance 0x563b0b0
edited: PS : can i add tabbar view to a view controller and then push that view?
thnx

Answer 1

use this self.hidesBottomBarWhenPushed = YES;

Answer 2

This method definitely works. You just need to put it in the method BEFORE you push it, like this:
-actionThatPushTheViewController {
//create the view controller here, do some init.
//then:
theViewControllerToBePushed.hidesBottomBarWhenPushed = YES;
//push it here like this:
[self.navigationController pushViewController:theViewControllerToBePushed animated:YES];

Answer 3

I hope this two methods may help you,
- (void) hideTabBar:(UITabBarController *) tabbarcontroller {
int height = 480;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3];
for(UIView *view in tabbarcontroller.view.subviews) {
if([view isKindOfClass:[UITabBar class]]) {
[view setFrame:CGRectMake(view.frame.origin.x, height, view.frame.size.width, view.frame.size.height)];
}
else {
[view setFrame:CGRectMake(view.frame.origin.x,view.frame.origin.y, 320, 436)];
}
}
[UIView commitAnimations];
}
- (void) showTabBar:(UITabBarController *) tabbarcontroller {
int height = 480;
[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.3];
for(UIView *view in tabbarcontroller.view.subviews) {
if([view isKindOfClass:[UITabBar class]]) {
[view setFrame:CGRectMake(view.frame.origin.x, height, view.frame.size.width, view.frame.size.height)];
}
else {
[view setFrame:CGRectMake(view.frame.origin.x, view.frame.origin.y, view.frame.size.width, height)];
}
}
[UIView commitAnimations];
}
Just put this two methods in AppDelegate class and call it where ever required as per you requirement.

Answer 4

if you want to hide it when pushed and show it when popped here is code:
if let viewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "SecondVC") as? SecondVC {
if let navigator = navigationController {
viewController.hidesBottomBarWhenPushed = true
navigator.pushViewController(viewController, animated: true)
}
}