My problem is, when I set the navBar to transparent with this code:
[[self navigationController] setNavigationBarHidden:NO animated:YES];
[self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
[self.navigationController.navigationBar setShadowImage:[UIImage new]];
[self.navigationController.navigationBar setTranslucent:YES];
.. the navigationbar hides the top of the viewcontroller's view:
I tried to prevent this with:
self.edgesForExtendedLayout = UIRectEdgeNone;
... but then, the navbar is not transparent anymore.
How can I achieve both?
Related
I have a problem with navigationBar. It is transparent. After scrolling appear obscure line under statusBar. What is it?
Method for transparent:
- (void)makeNavbarTransparent:(BOOL)transparent {
[self.navigationController.navigationBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
[self.navigationController.navigationBar setShadowImage:[UIImage new]];
[self.navigationController.navigationBar setTranslucent:YES];
}
I am creating my UINavigationBar in code like so:
// init and add root navigation controller to view
_rootNavigationController = [[UINavigationController alloc] init];
[_rootView.contentContainer addSubview:_rootNavigationController.view];
_rootNavigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent;
Then inside a certain UIViewController I want the UINavigationBar to have a clear background, so i use this code which works:
UINavigationBar *navBar = self.navigationController.navigationBar;
navBar.topItem.title = #"";
[navBar setBackgroundImage:[UIImage new] forBarMetrics:UIBarMetricsDefault];
[navBar setShadowImage:[UIImage new]];
[navBar setTranslucent:YES];
[navBar setTintColor:[[AVOThemeManager sharedTheme] contentBackButtonColor]];
Once the user leaves this page by pressing back, I want to return my UINavigationBar back to how it origonally looked, so I am trying this:
- (void)viewDidDisappear:(BOOL)animated {
UINavigationBar *navBar = self.navigationController.navigationBar;
[navBar setBackgroundImage:nil forBarMetrics:UIBarMetricsDefault];
[navBar setShadowImage:nil];
[navBar setBarStyle:UIBarStyleBlackTranslucent];
[navBar setTranslucent:YES];
}
But this does not seem to work. I also do not want to set the UINavigationBar to be a new instance, and then set the properties, because it has a global button which is added in the root navigation controller, which the child view controllers don't know about.
Is there anything else I can try?
After posting, I immediately found the answer. Basically instead of using viewDidDisappear, I should use viewWillDisappear and it worked.
When i set this code in viewDidLoad:
[self.navigationController.navigationBar setTranslucent:NO];
and run the project in xcode, it creates other nav bar above of my main nav bar.
Anyone know what is it?
[self.navigationController.navigationBar setBackgroundImage:[UIImage new]
forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage = [UIImage new];
self.navigationController.navigationBar.translucent = YES;
self.navigationController.view.backgroundColor = [UIColor clearColor];
The code above set the nav bar from translucent to solid without hide or create an other nav bar.
At first, I set navigation bar's background to translucent.
barImage=[[self.navigationController.navigationBar backgroundImageForBarMetrics:UIBarMetricsDefault] copy];//barImage is a UIImage point
[self.navigationController.navigationBar setBackgroundImage:[UIImage new]
forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage = [UIImage new];
It works well.
Now I need to revert navigation bar's background image to default.
- (void)dealloc
{
[self.navigationController.navigationBar setBackgroundImage:barImage
forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage = nil;
}
This doesn't work. What should I do?
Not sure if you're still stuck on this, but here's the code to reverse the effect. I borrowed a navigation controller, and copied everything over to the original navigation controller.
UINavigationController *tempNavigationController = [[UINavigationController alloc]initWithRootViewController:[[UIViewController alloc]init]];
[self.navigationController.navigationBar setBackgroundImage:[tempNavigationController.navigationBar backgroundImageForBarMetrics:UIBarMetricsDefault]
forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.shadowImage = [tempNavigationController.navigationBar shadowImage];
self.navigationController.navigationBar.translucent = YES;
self.navigationController.view.backgroundColor = tempNavigationController.view.backgroundColor;
tempNavigationController = nil;
If hiding the status bar by choosing status bar style = hide during application launch and I am customizing uinavigation bar like the following
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed: #"navbar-iphone.png"]
forBarMetrics:UIBarMetricsDefault];
and when I am getting this : the navigation bar is cut off the top.
and
Any ideas about this situation and how to fix it ?
You can try this.
during application launch. here viewController is UINavigationController.
//set status bar hidden true.
[[UIApplication sharedApplication]setStatusBarHidden:YES];
//You can set navigation bar frame to start from 0.0,0.0
self.viewController.navigationBar.frame = CGRectOffset(self.viewController.navigationBar.frame, 0.0, -20.0);
//set the image u want.
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed: #"navbar-iphone.png"]
forBarMetrics:UIBarMetricsDefault];
Or
[[UIApplication sharedApplication]setStatusBarHidden:YES];
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed: #"navbar-iphone.png"]
forBarMetrics:UIBarMetricsDefault];
[self.viewController setWantsFullScreenLayout:YES];