I just want to enable/disable the status bar per view controller (some view full screen, some not)
I've been several times through all the post related to the status bar 20 pixels issue, but still have the problem, especially on iOS5.0 (some trick worked on older iOS version):
Here is the problem definition:
I use [[UIApplication sharedApplication] setStatusBarHidden:YES] to hide the status bar
I always have the 20 pixel height white empty area if I do this
I've try to enable/disable the navigation bar to force a layout, this does not works on iOS 5:
[self.navigationController setNavigationBarHidden:NO animated:NO];
[self.navigationController setNavigationBarHidden:YES animated:NO];
I've try to manually reset the view frame size, no change
self.view.frame=CGRectMake(0, 0, 320, 480);
I've tried to change manually the navigation container view:
self.navigationController.frame=CGRectMake(0, 0, 320, 480);
All the view are of course 480 pixels height
Use the following method in viewWillAppear of view controller to which you would like to display StatusBar.
[[UIApplication sharedApplication]setStatusBarHidden:YES];
Declare one BOOL variable to indicate whether status bar is hidden or not while view is loaded in view controller which you would like to hide status bar and set its value to NO.
BOOL statusBarHidden = NO;
Then add the following code in viewWillAppear of view controller(Status Bar is hidden in this view)
[[UIApplication sharedApplication] setStatusBarHidden:YES];
if(statusBarHidden == NO)
{
self.navigationController.navigationBar.frame = CGRectOffset(self.navigationController.navigationBar.frame, 0.0, -20.0);
statusBarHidden = YES;
}
I think, You want to hide Status Bar andSet the ViewControllers In Full Screen With Navigation Bar then use
[self.navigationController.view setNeedsLayout];
other method use in you want to hide status Bar....
[[UIApplication sharedApplication]setStatusBarHidden:YES withAnimation:NO];
[self wantsFullScreenLayout];
Related
I'm running into a bit of a weird problem when hiding the status bar after the view had loaded. If I add the following method in the ViewDidLoad method, the status bar is completely removed from the view:
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
However, if I call this method in an IBAction or another method, the status bar still slides away but leaves a black bar the same height as itself behind.
I've thought about shifting the entire view up by 20px but is this really a fix? I don't want to just overlap a black bar incase the status bar height changes in future OS upgrades.
Hard-coding any number is always counter to future proofing. Your concerns are correct. There is a bit of a trick to properly handling the hiding of the statusBar. But all the needed information is available.
For example the UIApplication singleton has a property named statusBarFrame which is precisely what it sounds like, a CGRect of the statusBar's frame. The cool thing is that once you have called setStatusBarHidden:withAnimation: that property will give you the new frame, even before the animation completes. So really you are simply left with some basic math to adjust the view's frame.
In short your gut feeling is correct; always compute things live.
I've had good success with a category method like this. (Even when toggling in-call status bar in simulator(Command - T)):
#implementation UIApplication (nj_SmartStatusBar)
// Always designate your custom methods by prefix.
-(void)nj_setStatusBarHidden:(BOOL)hidden withAnimation:(UIStatusBarAnimation)animation{
UIWindow *window = [self.windows objectAtIndex:0];
UIViewController *rootViewController = window.rootViewController;
UIView *view = rootViewController.view;
// slight optimization to avoid unnecassary calls.
BOOL isHiddenNow = self.statusBarHidden;
if (hidden == isHiddenNow) return;
// Hide/Unhide the status bar
[self setStatusBarHidden:hidden withAnimation:animation];
// Get statusBar's frame
CGRect statusBarFrame = self.statusBarFrame;
// Establish a baseline frame.
CGRect newViewFrame = window.bounds;
// Check if statusBar's frame is worth dodging.
if (!CGRectEqualToRect(statusBarFrame, CGRectZero)){
UIInterfaceOrientation currentOrientation = rootViewController.interfaceOrientation;
if (UIInterfaceOrientationIsPortrait(currentOrientation)){
// If portrait we need to shrink height
newViewFrame.size.height -= statusBarFrame.size.height;
if (currentOrientation == UIInterfaceOrientationPortrait){
// If not upside-down move down the origin.
newViewFrame.origin.y += statusBarFrame.size.height;
}
} else { // Is landscape / Slightly trickier.
// For portrait we shink width (for status bar on side of window)
newViewFrame.size.width -= statusBarFrame.size.width;
if (currentOrientation == UIInterfaceOrientationLandscapeLeft){
// If the status bar is on the left side of the window we move the origin over.
newViewFrame.origin.x += statusBarFrame.size.width;
}
}
}
// Animate... Play with duration later...
[UIView animateWithDuration:0.35 animations:^{
view.frame = newViewFrame;
}];
}
#end
Why are you calling this in viewDidLoad?
Try it in loadView?
- (void)loadView {
[super loadView];
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
}
Yes, moving the view 20 pixels should fix your problem. The black is absence of anything to display, not an actual black bar.
As for potential status height changes, this fix will not work if that happens because the view will be moved by the height of the new status bar. If that happens, you will have to either add different offsets for different status bars, or find a completely new solution.
In viewWillAppear:
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationFade];
In viewDidAppear, you can insert:
self.view.window.rootViewController.view.frame = [UIScreen mainScreen].applicationFrame;
In viewWillDisappear:
[[UIApplication sharedApplication] setStatusBarHidden:NO withAnimation:UIStatusBarAnimationFade];
I was able to fix this issue by calling:
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
as others recommended before presenting the view controller that is displaying the black bar.
For example, if I had an action that presented ViewController, I would call it like so:
- (IBAction)presentViewController:(id)sender {
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
ViewController *vc = [[ViewController alloc] initWithNibName:#"ViewController" bundle:nil];
[self presentViewController:vc animated:YES completion:nil];
}
I noticed that after an orientation change from portrait to landscape, I'm not getting touchesBegan events for some parts of my view any longer. I suppose that this is because I'm not informing my UIView about the dimension change of my window's frame after the device rotation.
I'm setting up everything programmatically (UIWindow, UIViewController, UIView) like this:
myViewController = [[myUIViewController alloc] init];
myWindow = [[UIWindow alloc] initWithFrame: rect];
myView = [[myUIView alloc] initWithFrame: [myWindow bounds]];
[myViewController setView:myView];
[myWindow addSubview:myView];
[myWindow setFrame:rect];
[myWindow makeKeyAndVisible];
When I get the didRotateFromInterfaceOrientation notification, I'm updating the window frame like this:
[[[self view] window] setFrame:rect];
But after that, my UIView does no longer get touchesXXX events for all areas. It seems that only the areas of the previous frame are still reporting events. So my question: Is there anything else I need to do in didRotateFromInterfaceOrientation to inform my UIView about the dimension change?
Thanks for help!
EDIT: Do I have to reposition the UIView on didRotateFromInterfaceOrientation() or is this done automatically? I noticed that the "transform" property of my UIView is set to a transformation matrix when the orientation changes. However, this makes it very hard to reposition my view. The docs say that the "frame" property can't be used when a transformation is active, so I tried to modify the "center" property to reposition my view, but this also doesn't work correctly. I want to move the view to the top-left corner, so I set "center" to (screenwidth/2,screenheight/2) but it doesn't position the view correctly :( Any idea or info what must be done to get the events right in orientation mode?
I have had this same problem, and I believe it is a frame issue.
I had to manually set the rects depending on orientation, as well as set the userInteractionEnabled on the main view, like:
if (appOrientation == 0)
appOrientation = [UIApplication sharedApplication].statusBarOrientation;
if (appOrientation == UIInterfaceOrientationLandscapeLeft || appOrientation == UIInterfaceOrientationLandscapeRight) {
[[UIApplication sharedApplication] setStatusBarHidden:YES];
myView.frame = CGRectMake(0, 0, 1024, 768);
} else {
[[UIApplication sharedApplication] setStatusBarHidden:YES];
myView.frame = CGRectMake(0, 0, 768, 1024);
}
myView.userInteractionEnabled = YES;
OK I know this is an old question but this is how I fixed this issue.
In my situation I had a storyboard with a view that would be displayed either in portrait or forced to landscape mode depending on a user setting.
My app displays the statusBar at all times except for when I'm showing this view.
To make this all work, the transformations had to be applied in the viewWillAppear method for one. I had the following code in the viewDidAppear method at first and that messed with the bounds for the touchesBegan event I guess.
Here's the viewWillAppear code:
- (void)viewWillAppear:(BOOL)animated
{
// Hide the status bar
[[UIApplication sharedApplication] setStatusBarHidden:YES];
// This is to offset the frame so that the view will take the fullscreen once the status bar is hidden
self.navigationController.navigationBar.frame = CGRectOffset(self.navigationController.navigationBar.frame, 0.0, -20.0);
// If view is to be displayed in landscape mode
if ([[NSUserDefaults standardUserDefaults] boolForKey:#"orientation"])
{
// Change status bar orientation
[[UIApplication sharedApplication] setStatusBarOrientation:UIDeviceOrientationLandscapeLeft];
// Turn the view 90 degrees
[self.navigationController.view setTransform:CGAffineTransformMakeRotation(M_PI/2)];
// Set the frame and the bounds for the view
// Please Note: Frame size has to be reversed for some reason.
[self.navigationController.view setFrame: CGRectMake(0,0,320,480)];
[self.navigationController.view setBounds: CGRectMake(0,0,480,320)];
// Make sure user can interact with view
[self.navigationController.view setUserInteractionEnabled:YES];
}
}
Any other thing that had to happen layout wise, have to happen in the viewDidAppear method. For instance I had an image that covered the whole view and the frame had to be set depending on the orientation. Setting the frame in the viewWillAppear gave weird results but the same code worked perfectly in viewDidAppear.
Hope this helps someone as I banged my head for 6 hours on this thing.
I want to make an overlay which is partially transparent, and covers the entire screen including the status bar. I've seen that the folks at tapbots do exactly that. So it must be possible somehow. Status bar should still be visible!
Before iPhoneOS 3.2:
[[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO];
after iPhoneOS 3.2:
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation: UIStatusBarAnimationNone];
For more information on these, see the documentation for UIApplication.
There are two ways to hide the status bar:
Programaticaly at runtime by using UIApplication sharedApplication:
- (void)setStatusBarHidden:(BOOL)hiddenwithAnimation:(UIStatusBarAnimation_)animation
Or at design time using the Info.plist property UIStatusBarHidden yes/no value.
You could try creating a full-size view and adding it as a subview of your main window. Something like:
CGRect mainWindowSize = [UIScreen mainScreen].bounds;
UIView* overlay = [[UIView alloc] initWithFrame:mainWindowSize];
// Use colorWithRed:green:blue:alpha: or a solid color then manually tweak alpha
overlay.backgroundColor = [UIColor redColor];
overlay.alpha = 0.2; // transparency level
overlay.userInteractionEnabled = YES;
// Add it on top of the main window
UIWindow* mainWindow = (((MyAppDelegate*)
[UIApplication sharedApplication].delegate).window);
[mainWindow addSubview:overlay];
Caveats: You may have to manually hide the status bar. Also, this overlay view and its subviews are going to get all the user tap events. May want to make sure that's what you want.
push the view controller as a modalViewController....
if your view controller is AVC and assuming you use a navigation controller:
[self presentModalViewController:AVC animated:YES];
from the current view controller you're on.
I have a UIView and a UIController view. My is standard a 320x460 view. In applicationDidFinishLaunching I do:
[window addSubview:[controller view]];
The weird thing is that the UIView goes under the status bar (like there's missing outlet). However, if I rotate iPhone to the side and then back, it shows up ok.
Is this an expected behavior (I bet I can fix it by setting offset) or am I doing smth wrong?
I ran into this issue when displaying a UIViewController via presentModalViewController.
You can get around it by manually resizing the controller's view after the view has appeared:
- (void) viewDidAppear: (BOOL) animated {
//manually adjust the frame of the main view to prevent it from appearing under the status bar.
UIApplication *app = [UIApplication sharedApplication];
if(!app.statusBarHidden) {
[self.view setFrame:CGRectMake(0.0,app.statusBarFrame.size.height, self.view.bounds.size.width, self.view.bounds.size.height - app.statusBarFrame.size.height)];
}
}
I think your problem is that when you add a view to a window, you need to be aware of the state of the status bar and compensate for it:
if showing the status bar :
[controller view].frame = CGRectMake(0, **20**, 320, 460);
else
[controller view].frame = CGRectMake(0, 0, 320, **480**);
this is why IB shows you a dummy status bar.
I add this issue today. It turned out that I had "Wants Full Screen" checked in the ViewController's Attribute inspector.
Turning off "Wants Full Screen" resolved the problem.
Finally, I got to this solution. Works well for both iPhone & iPad:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
// Allocate view controller and load nib file
if (isIPhone) {
self.mainViewController = [[[tfdMainViewController_iPhone alloc] initWithNibName:#"tfdMainViewController_iPhone" bundle:nil] autorelease];
} else {
self.mainViewController = [[[tfdMainViewController_iPad alloc] initWithNibName:#"tfdMainViewController_iPad" bundle:nil] autorelease];
}
// Offset correction (iPhone bug?)
CGRect r = self.mainViewController.view.frame;
r = CGRectOffset(r, 0, [UIApplication sharedApplication].statusBarFrame.size.height);
[self.mainViewController.view setFrame:r];
[window addSubview: self.mainViewController.view];
[self.window makeKeyAndVisible];
return YES;
}
P.S. For some reason view has correct height:
480 (screen height in iPhone Portrait mode) - 20 (status bar) = 460,
but failed to set vertical offset. It is pretty strange behavior, looks like bug.
Fixes to the window didn't work for me as I had a modal view. A UIModalPresentationCurrentContext modal view. OK, here's what worked for me. I've been searching the web up and down before getting this to work.
I'm unable to move the view.frame from the parent. However in the viewWillAppear I'm able to move it down:
- (void)viewWillAppear:(BOOL)animated
{
// Move down to compensate for statusbar
CGRect frame = parentView.navCon.view.frame;
frame.origin.y = [UIApplication sharedApplication].statusBarFrame.size.height;
parentView.navCon.view.frame = frame;
}
If you are using Interface Builder's "Simulated User Interface Elements", then you also need to make sure that you have set the flag for "Resize View From NIB" in your MainWindow nib.
This appears to be a bug in iOS 5. One fix would be to use wantsFullScreenLayout in whatever view controller needs to present modally and manually layout the view always below the status bar.
http://www.cocoanetics.com/2012/06/radar-view-frame-inconsistency-using-presentviewcontroller-wantsfullscreenlayout-yn/
http://openradar.appspot.com/radar?id=1758406
Are you manually setting the application bar hidden property AFTER adding the subview? I don't imagine this is the case, but if it's set to none when you first load the view it will layout as if there isn't one, and if you then set the status bar to not hidden it will pop up on top of your view.
A possible solution is to use [[controller view] setNeedsLayout]; after adding the subview, or possibly [window layoutSubviews];. I've never had a lot of success using those to fix layout problems, but since it works after a rotation it's worth a shot.
Even me too got the same issue. When we are using some coding for device orientation we have wrote some coding in app delegate or in our view controller. There we need to change the condition to use the orientation return YES or NO. That solved our issue.
I prefer to use UINavigationController to wrap the UIViewController you, after that, set the NavigationBarHidden to the UINavigationController. It's perfect solution cause UINavigationController do handle the height of status bar in iOS 7.
Here is my code and my screen capture.
UINavigationController *wrapNavController = [[UINavigationController alloc] initWithRootViewController:yourViewController] ;
[wrapNavController setNavigationBarHidden:YES] ;
The Xcode 6, iOS7/8 solution is in to uncheck the "Under Top Bars" checkmark in the "Extend Edges" section of the View Controller section of the Attributes Inspector.
For Xamarin.iOS it would be:
if (UIApplication.SharedApplication.StatusBarHidden == false)
{
var statusBarHeight = UIApplication.SharedApplication.StatusBarFrame.Height;
View.Frame = new CoreGraphics.CGRect(0, statusBarHeight, View.Frame.Width, View.Frame.Height - statusBarHeight);
}
I have a navigation based app. The first view (rootcontroller) starts with three large buttons only. No navigationbar. From there, everything else is tableviews and have navigation bars. I'm doing this to show/hide the navigation bar:
MyAppAppDelegate *appDelegate = [[UIApplication sharedApplication] delegate];
appDelegate.navigationController.navigationBar.hidden = NO;
Once I leave the root controller, the navigation bar will jerk into place and lay on top of the tableview, rather than pushing it down. It clips the top part of the tableview. Going back to the root controller isn't smooth in how the navigation bar disappears. Is there a smoother/better way to do accomplish hiding the navigation bar for the root controller only?
You can use [navigationController setNavigationBarHidden:YES animated:YES] to hide the bar smoothly.
Reference
This nifty bit of code animates the navigation bar hiding with no UI issues:
[navigationController setNavigationBarHidden: YES animated:YES]
But...
Use the self.navigationController.navigationBarHidden property for checks in the code instead of the self.navigationController.navigationBar.hidden property. This will save you a lot of pain from unexpected UI positioning problems.
Take care to place this method in - (void)viewWillAppear:(BOOL)animated or later in the view lifecycle. This is recommended because if you do it in - (void)viewDidLoad for instance, you will get an ugly black rectangular view during animations from a view which displays its navigation bar to a view which doesn't!
For example, if your home view has its navigation bar hidden but all its children have the navigation bar shown, when you pop to home view, the animation will show a black bar in place of the navigation bar until the animation completes
You can customize the navigation bar animation and duration by the following methods. It will provide you callback once animation will be completed.
// pass a param to describe the state change, an animated flag and a completion block matching UIView animations completion
- (void)setNavigationBarVisible:(BOOL)visible animated:(BOOL)animated completion:(void (^)(BOOL))completion {
// fail if the current state matches the desired state
if ([self navigationBarIsVisible] == visible) return completion(YES);
// get a frame calculation ready
CGFloat nheight = self.navigationController.navigationBar.frame.size.height;
CGFloat noffsetY = (visible)? -nheight : nheight;
// zero duration means no animation
CGFloat duration = (animated)? 0.3 : 0.0;
[UIView animateWithDuration:duration animations:^{
CGRect nframe = self.navigationController.navigationBar.frame;
self.navigationController.navigationBar.frame = CGRectOffset(nframe, 0, noffsetY);
} completion:completion];
}
// know the current state of the navigation bar
- (BOOL)navigationBarIsVisible {
return self.navigationController.navigationBar.frame.origin.y < CGRectGetMinY(self.view.frame);
}
// Show or Hide navigation bar
[self setNavigationBarVisible:![self navigationBarIsVisible] animated:YES completion:^(BOOL finished) {
NSLog(#"navigation bar finished");
}];
Before hide a Navigation bar:
After hide a Navigation bar: