Modally present UIImagePickerController does not hide UITabBar if current view has UINavigationController as container controller

Question

I have a tabbar app and the second tab goes to a navigation controller-style view.

on the rightButton of the navigation bar I have a camera icon to present modally the ImagePicker. However it will not become fullscreen but instead underlay the tabbar.

The first image show that I have a navigation controller container this first rootView which has a camera button. When click it will just create a UIImagePickerController and present it modally. Nothing special.

first http://www.jobline.com.sg/images/no_use/1.png

However the result of the camera is missing the control to take/cancel picture like this:

second http://www.jobline.com.sg/images/no_use/2.png

How do I hide the UITabBar and able to see the camera control? I know it can be done because the Skype profile tab also have a camera and then present a UIActionSheet to "Take picture" and then the full-screen camera view. I believe the profile tab has navigation controller as its root view also.

Thanks a million for your help.

Here is the code that I used:

- (void)takePicture:(id)sender {
  UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];

  if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
    imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;
  } else {
    imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
  }

  [self presentModalViewController:imagePicker animated:YES];
}

It is a fairly straightforward code of presenting an imagePicker modally. So I wonder why there is no camera control and how come my tabbar can overlap it. Is it because of my view hierarchy?

Looks like it should work as is. I have this in a sample code and it seems to work fine. Can you tell me what've you done differently so that I can reproduce the error? — Deepak Danduprolu
Thank you Deepak. You are so helpful! However I am doing some of my view programmatically. Here is my code Btw.. self is ClaimController which is the root view controller for the UINavigationController :) — mech
Okay.. I think I found the cause. I am having a totally new class just to house the UINavigationController instead of doing it directly at the AppDelegate :( Sorry.. is my lack of view controller understanding hehe... I now do this ClaimController *claimController = [[ClaimController alloc] init]; UINavigationController *claimNavigationController = [[UINavigationController alloc] initWithRootViewController:claimController]; at the didFinishLaunchingWithOptions. — mech

Chance Hudson Chance Hudson · Accepted Answer · 2011-06-24T02:18:56

Ok, i have a solution, but it is somewhat "hacky." My idea is to post a notification to NSNotificationCenter that calls a method which hides the tabbar. An example:

Inside the application delegate (or whatever controls your tabbar...)

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hideTabbar) name:@"hideTab" object:nil];
    // Override point for customization after application launch.
    // Add the tab bar controller's current view as a subview of the window
    self.window.rootViewController = self.tabBarController;
    [self.window makeKeyAndVisible];
    return YES;
}

-(void)hideTabbar{
    [[_tabBarController tabBar] setHidden:YES];
}

And then to hide the tab bar when the camera view appears just post the notification, like so

[[NSNotificationCenter defaultCenter] postNotificationName:@"hideTab" object:nil];

And then of course have one to unhide it when the camera view goes away.

Hope this helps.

Modally present UIImagePickerController does not hide UITabBar if current view has UINavigationController as container controller

1 Answers