iOS 7 Status Bar Collides With NavigationBar

Question

I have a view controller in my app that has a navigation bar dragged on it in the storyboard. It was working fine in the iOS 6 but in iOS 7 it look like this:

The status bar and the navigation bar should no collide with each other. I have seen a lot of such questions on the stack overflow but they didn't of much help to me.

Some questions say that i should use this "self.edgesForExtendedLayout = UIRectEdgeNone;" but it didn't work. Some say i should remove the navigation bar and embed it inside the navigation controller that i cannot do due to the way my program is implemented. Some solutions suggests to use the view bounds and all but it didn't work for me as well.

What is the one thing that can help me resolve this issue. Thanks in advance!

UPDATE: I have embedded the view controller inside a uinavigation controller. Removed the navigation bar that was earlier manually added in it. Now it looks ok in the storyboard but when i run it, it shows the following:

It is showing text from another view controller that is currently behind it that is its parent view controller. Means its transparent now. Can anyone point out what i am doing wrong?

Answer 1

The latest version of the iOS has brought many visual changes and from a developer's point of view, the navigation and status bar are two noticeable changes.

The status bar is now transparent and navigation bar behind it shows through. The navigation bar image can even be extended behind the status bar.

First of all, if you are a beginner and have just started iOS development and are confused the way status bar and navigation bar is working, you can simply go through a blog post HERE that i found very useful. It has all the information related to navigation and status bar in iOS 7.

Now coming to the answer of your question. First of all i can see two different problems. One is that your status bar and navigation bar are both kind of colliding with each other as shown by you in the question with an image.

PROBLEM: Well the problem is that your have earlier dragged a navigation bar in your view controller which was working in iOS 6 correctly but with the arrival of iOS 7 SDK, this approach is resulting in status bar and navigation bar overlapping with each other.

SOLUTION to First Problem: You can either use UIBarPositionTopAttached or you can use view bounds and frames, i can also suggest and link you to Apple's documentation and bla bla bla but that would take some time for you to solve the issue.

The best and the most easiest way to solve this issue is to just embed your view controller inside a navigation controller and thats it. You can do it by just selecting the view controller and going to Editor > Embed In > Navigation Controller. (If there is any content on your old navigation bar, you can first drag it down, embed the view controller in navigation controller and then move the bar buttons on the new navigation bar and then delete the old navigation bar)

SOLUTION to Second Problem: This solution is for your specific question that you have mentioned in the update and is not for the general public reading this. As you can see that navigation and status bar is not visible and a transparent area is showing the parent view controller. I am not really use why you are facing this issue but most probably because of some third party library like ECSlidingView or any other is involved. You can select this view controller in your storyboard and set the background color of the view to be the same as your navigation bar. This will stop showing the parent view controller behind and your navigation bar and status bar will start showing. Now you can cover the rest of your view controller with text view or what ever your are using in it.

Hope this helps!

Answer 2

The navigation bar is too close to the status bar because starting in iOS 7, the status bar is more of an overlay over the whole view controller's view. Since your navigation bar is at (0, 0), the status bar will show on top of the navigation bar. To solve this, simply move the navigation bar down (or, as others have said), create a constraint between the navigation bar and the topLayoutGuide.

When you do that, you will see that there is now a 20 point gap between the navigation bar and the top of the screen. That's because you just moved the navigation bar down 20 points. "But UINavigationController can do it right!" Absolutely, and it does so by implementing UIBarPositioningDelegate on your view controller. This is a one-method protocol that should be implemented like this:

- (UIBarPosition)positionForBar:(id<UIBarPositioning>)bar {
    return UIBarPositionTopAttached;
}

After adding your view controller as the delegate for the navigation bar, you'll notice the navigation bar is still shifted down 20 points, but its background will extend up underneath the status bar, just like in UINavigationController.

Another thing you're seeing is that the navigation bar is translucent, meaning anything underneath the navigation bar will be visible to some extent. The translucent property on UINavigationBar is set to YES by default on iOS 7. Before iOS 7, the default was NO.

Answer 3

you can simply do this:

1) add a constrain between the Navigation Bar and Top Layout Guide (select navigationBar, hold ctrl key and go to Bottom Layout Guide, unhold ctrl key)

2) select vertical spacing:

3) set constant to 0:

Result:

UPDATE

In your AppDelegate file you can add this:

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool 
{
  // Prevent Navigationbar to cover the view
  UINavigationBar.appearance().translucent = false
}

Answer 4

I suggest you in your viewDidLoad method you try:

self.navigationController.navigationBar.translucent = NO;

(by default it is yes now)

https://developer.apple.com/library/ios/documentation/uikit/reference/UINavigationBar_Class/Reference/UINavigationBar.html#//apple_ref/occ/instp/UINavigationBar/translucent

Answer 5

This works for me i hope you also have same luck :).
Add below code in your view.

-(void) viewDidLayoutSubviews
{
    CGRect tmpFram = self.navigationController.navigationBar.frame;
    tmpFram.origin.y += 20;
    self.navigationController.navigationBar.frame = tmpFram;
}

It basically change location of navigation bar.

Answer 6

This is new feature with IOS7. Instead of staring at 20 px navigation bar in IOS7 staring at 0 px. As a solution shift the whole view downwards to 20 px or you can use image for navigation bar with height 64px.

Answer 7

In case it still helps someone, this is what worked for me for moving the Navigation Bar little bit down in ios 7 and above:

-(void)viewWillLayoutSubviews
{
    float iosVersion = 7.0;
    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= iosVersion) {
        // iOS 7+
        CGRect viewFrame = self.view.frame;
        viewFrame.origin.y += 10;
        self.view.frame = viewFrame;
    }
}

On a device with ios 6.1 and below the Navigation Bar will be unchanged, as it was before.

And this is what I used to make the contents of the Status Bar lighter:

-(UIStatusBarStyle)preferredStatusBarStyle{
    return UIStatusBarStyleLightContent;
}

Answer 8

If your UIViewController is NOT in a UINavigationController and you're using UIStoryBoard, you can set the "iOS 6/7 Deltas" to 20 for the delta Y, for every subview that needs to be offset from the UIStatusBar.

Answer 9

Using Swift:

As @Scott Berrevoets said in his answer you need to implement the method positionForBar in the protocol UIBarPositioningDelegate, but as the UINavigationBarDelegate protocol implements this protocol :

public protocol UINavigationBarDelegate : UIBarPositioningDelegate {
   ...
}

You only need to set the delegate of the UINavigationBar you set using Storyboard and implement the method and it's done, like in this way:

class ViewController: UIViewController, UINavigationBarDelegate {

   @IBOutlet weak var navigationBar: UINavigationBar!

   override func viewDidLoad() {
       super.viewDidLoad()
       self.navigationBar.delegate = self 
   }

   override func didReceiveMemoryWarning() {
       super.didReceiveMemoryWarning()
       // Dispose of any resources that can be recreated.
   }

   func positionForBar(bar: UIBarPositioning) -> UIBarPosition {
       return UIBarPosition.TopAttached
   }
}

NOTE: It's worth to mention if you set the position of the y-axis of the navigation bar, let's say to 40 from the top, then it will extend underneath to the top from this position, to simulate the behaviour of the UINavigationController you need to set to 20 from the top.

I hope it will help you.

Answer 10

First, set UIViewControllerBasedStatusBarAppearance to NO in Info.plist. Then, in AppDelegate's application:didFinishLaunchingWithOptions: method add:

if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {
   [application setStatusBarStyle:UIStatusBarStyleLightContent];
   self.window.clipsToBounds = YES;
   self.window.frame = CGRectMake(0, 20, self.window.frame.size.width, self.window.frame.size.height-20);
   self.window.bounds = CGRectMake(0, 20, self.window.frame.size.width, self.window.frame.size.height);
 }
 return YES;

Answer 11

In iOS 7 app occupies 100 % of screen size.This not a problem . http://www.doubleencore.com/2013/09/developers-guide-to-the-ios-7-status-bar/

Answer 12

in earlier iOS window start after statusbar and in iOS 7 window starts from 0px in earlier version view height is 460 (iPhone 4s and earlier) and 548 (iPhone 5) but in iOS 7 view height is 480 (iPhone 4s and earlier) and 568 (iPhone 5 and later) so you have to start view arrangement after 2o px or you have to start view from 20px.

you can write below code in rootviewcontroller or in all viewcontroller for set view from 20px

#define IOS7_HEIGHT             64

- (void)viewDidLayoutSubviews {
    NSString *currSysVer = [[UIDevice currentDevice] systemVersion];
    if ([currSysVer compare:@"7.0" options:NSNumericSearch] != NSOrderedAscending)
    {
        CGRect frame=[self.view frame];
        if (frame.origin.y!=IOS7_HEIGHT) {

            frame.origin.y = IOS7_HEIGHT;
            frame.size.height -= IOS7_HEIGHT;
            [self.view setFrame:frame];
            [self.view layoutSubviews];
        }
    }
}

here height is 64 because 20 for statusbar and 44 for navigationbar. try below code it will help you. and your problem will be solved.

Answer 13

For the ones who are having problems implementing @Masterfego 's solution (which is also the official, but I have had problems with Xcode 6.3 and automatic constraints), this is what I did:

I have a UIViewController with an added Navigation Bar. I selected the NAvigation bar and added a height constraint of 64px. We later see a warning that the navbar will be higher (but this is what we do). Finally, you can see that the Status bar looks nice and has the same color as the navbar. :)

PS: I can't post images yet.

Answer 14

You can probably create constraints that are attached to the top layout guide to specify the navigation bar's position relative to the status bar. See the iOS 7 UI Transition Guide: Appearance and Behavior section for more information about using the layout guides.

Answer 15

it's the best answer. But I wanted know how to use a Storyboard and dragged UINavigationBar on it. When I implemented the delegate method, and set the return result to UIBarPositionTopAttached, it did not work.

- (void)viewDidLoad{
    self.navigationbar.delegate = self;
}
- (UIBarPosition)positionForBar:(id<UIBarPositioning>)bar{
    NSLog(@"Got it");
    //
    //    CGRect frame = self.navigaitonBar.frame;
    //
    //    frame = CGRectMake(0, 20, CGRectGetWidth(frame), CGRectGetHeight(frame));
    //    self.navigaitonBar.frame = frame;
    //
    //    NSLog(@"frame %f",frame.origin.y);
    return UIBarPositionTopAttached;
}

Answer 16

If you use Xcode 6 and Swift, you can make it:

1. Open to info.plist file of your app.
2. Add a ViewControllerBasedStatusBarAppearance Boolean key if it is not existing and assign value “NO”.
3. Add “Status bar style” key if it is not existing and select “Opaque black style” value to it.

Answer 17

I was facing issue when full screen ModalViewController was opening from my MainViewController, NavigationBar position was getting changed when user was coming back to MainViewController from ModalViewController.

Issue which I noticed is status bar height was not getting included when user came back to MainViewController. Please debug and check origin of your NavigationBar before and after coming back to your ViewController.

// This method will adjust navigation bar and view content.
    private func adjustNavigationControllerIfNeeded() {

        var frame = self.view.frame
        let navigationBarHeight = self.navigationController!.navigationBar.frame.size.height

        if(frame.origin.y == navigationBarHeight && !UIApplication.shared.isStatusBarHidden) { 

   // If status bar height is not included but it is showing then we have to adjust 
      our Navigation controller properly

            print("Adjusting navigation controller")
            let statusBarHeight = UIApplication.shared.statusBarFrame.height

            frame.origin.y += statusBarHeight // Start view below navigation bar
            frame.size.height -= statusBarHeight
            self.view.frame = frame

            self.navigationController!.navigationBar.frame.origin.y = statusBarHeight // Move navigation bar
        }
    }

And call it from viewWillAppear method -

override func viewWillAppear(_ animated: Bool) {

        super.viewWillAppear(animated)
        self.adjustNavigationControllerIfNeeded()
}