show/hide the tabbar when needed from a view controller

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

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 2

use this self.hidesBottomBarWhenPushed = 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.