For Customing navigation bar, I want set the background image and custom the left button and right button.so I instance it with code without .xib. but there is a white space bar above navigation bar.
here is my code :
-(void) createNavBar:(NSMutableArray *)arguments withDict:(NSMutableDictionary *)options
{
if (!navBar)
{
navBarController = [[[UINavigationController alloc] init] autorelease];
navBarController.navigationBar.bounds = CGRectMake(0, 0, 320, 40);
[navBarController.navigationBar setBackgroundImage:[UIImage imageNamed:#"www/images/header_bg#2x.png"] forBarMetrics:UIBarMetricsDefault];
[[[self webView] superview] addSubview: navBarController.navigationBar];
}
}
run and build, find there is a white space bar above navigation bar.
here is a Screenshot：
How can remove the space bar between the title bar and the blue navigation bar?
Thanks for your guide.
In Xib check your view and webView Y and height
Try using this:
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationSlide];
That worked for me.
insert [self.navigationController.navigationBar.layer setMasksToBounds:NO]; in viewDidLoad
Related
I am trying to make a navigation based application having three UIViewController in navigation stack. I have a bottom bar (UITabBar).
I want to hide tabbar when first UIViewController is pushed into the stack and I want to show tabbar when second UIVIewController is pushed.
Here is the code I have written to do so.
For First UIVIewController:
NotificationDetailsVC *obj = [[NotificationDetailsVC alloc] init];
obj.hidesBottomBarWhenPushed = YES;
[self.navigationController pushViewController:obj animated:YES];
[obj release];
For Second UIViewController I have done:
NotificationBO *obj=[self.notificationsArray objectAtIndex:indexPath.row];
object.hidesBottomBarWhenPushed = NO;
[self.navigationController pushViewController:object animated:YES];
[object release];
Now the problem is that, I can get UITabBar Hidden for first UIViewController, but for second it is also hidden.
How can I solve this issue?
Instead of using hidesBottomBarWhenPushed method. Try your code for hiding tabbar in your ViewController, like
[self.tabBarController.tabBar setHidden:YES];
and for showing tabbar
[self.tabBarController.tabBar setHidden:NO];
The above one will work, but the problem is it'll leave an empty space in viewController bottom. To overcome this, set frame to your tabbarController.
For Hiding, set
[self.tabBarController.tabBar setFrame:CGRectMake(0, 480, 320, 50)]
For Showing, set
[self.tabBarController.tabBar setFrame:CGRectMake(0, 430, 320, 50)]
[[[UINavigationBar appearance] setTitleView:button]
I tried to set title view as button for all navigation item using above line of code but it is not working.How can I set title view for all navigation bars in my project by writing small code in appdelegate ?
Customizing the Appearance of a Navigation Bar
it is alright to modify the barStyle, tintColor, and translucent
properties, but you must never directly change UIView-level properties
such as the frame, bounds, alpha, or hidden properties directly.
For more detail you can follow apple doc UINavigationBar Class Reference
Edit ->
I solved your query
[[UINavigationBar appearance] addSubview:yourView];
Other Navigation Related query
try this dude...
//put whatever object in this view..for example button that you want to put...
UIView* ctrl = [[UIView alloc] initWithFrame:navController.navigationBar.bounds];
ctrl.backgroundColor = [UIColor yellowColor];
ctrl.autoresizingMask = UIViewAutoresizingFlexibleWidth;
[navController.navigationBar addSubview:ctrl];
let me know it is working or not!!!!
Happy Coding!!!
This is how you create a navigation controller in addDelegate and set a title to it,
you have to add the following code to didFinishLaunchingWithOptions method.
Notice that you need to set a root view for the viewController which will the viewController that will be displayed inside the navigationController.
yourViewController *mainVC = [[yourViewController alloc]init];
UINavigationController *navigationController1 = [[UINavigationController alloc] initWithRootViewController:mainVC];
navigationController1.title = #"title";
[window addSubview:navigationController1.view];
If you use iOS4, you can override drawRect
#implementation UINavigationBar (UINavigationBarCategory)
-(void)drawRect:(CGRect)rect
{
UIImageView *itleImageView = //create object
[self addSubView:titleImageView];
//set title view in navigation bar
}
#end
iOS 5,
if ([[UIDevice currentDevice].systemVersion floatValue] >= 5.0) {
if ([self.navigationController.navigationBar respondsToSelector:#selector( setBackgroundImage:forBarMetrics:)]){
UIImageView *itleImageView = //create object
[self.navigationController.navigationBar addSubView:titleImageView];
}
}
i guess this is a right, as i don't have implemented.
I wanted to add a logo in every NavigationController, so I made a subclass of
UINavigationController and used this in the viewDidLoad-Method
UIImage *logo =[UIImage imageNamed:#"logo"];
CGFloat navWidth = self.navigationBar.frame.size.width;
CGFloat navHeight = self.navigationBar.frame.size.height;
UIImageView *logoView = [[UIImageView alloc] initWithFrame:CGRectMake(navWidth-logo.size.width - 5,
(navHeight - logo.size.height) / 2,
logo.size.width,
logo.size.height)];
logoView.image = logo;
[self.navigationBar addSubview:logoView];
I'm using UINavigationController and I have a UIView added to self.window
UIView *myView = [[UIView alloc] init];
myView.frame=CGRectMake(0,20,320,100);//20 is to position view under status bar
[[[self.window subviews] objectAtIndex:0] addSubview:myView];
This is done in AppDelegate.m file.
And this way myView covers up the navigation bar completely.
However, when the screen orientation changes, somehow the navigation bar is brought to the very front (just like what bringSubViewToFront does) and is on top of myView (a portion of view is covered up by navigation bar).
Does anyone know why this happened? Is there a way I can keep myView on top of everything?
If you don't want to show the navigation bar, just hide it:
self.navigationController.navigationBarHidden = YES;
or:
[self.navigationController setNavigationBarHidden:YES animated:YES];
if you want to animate the change from not hidden to hidden.
You can also adjust the "z" coordinate for stuff on the screen
[aview sendSubviewToBack:asubview];
and
[aview sendSubviewToFront:asubview];
I have a problem with the display of my popover. After initWithContentViewController: and presentPopoverFromBarButtonItem:permittedArrowDirections:animated: it cuts corners of the navigation bar. How should I fix it?? Thanks.
This is the code I'm using
NavContr *nav = [NavContr new];
nav.navigationBar.backgroundColor = [UIColor redColor];
UIPopoverController *tempPop = [[UIPopoverController alloc] initWithContentViewController:nav];
[tempPop presentPopoverFromBarButtonItem:mainButtonItem permittedArrowDirections:UIPopoverArrowDirectionUp animated:NO];
EDIT: I have resolved this problem:
+ (void)configure:(UINavigationController *)navController {
UINavigationBar *navigationBar = navController.navigationBar;
UIView *contentView = nil;
for (UIView *view in navController.view.subviews) {
if ([[NSString stringWithFormat:#"%#", [view class]] isEqualToString:#"UILayoutContainerView"])
contentView = view;
}
// setting frame to navigation bar and content view
[navigationBar setFrame:CGRectMake(navigationBar.frame.origin.x, 0, navigationBar.frame.size.width, navigationBar.frame.size.height)];
[contentView setFrame:CGRectMake(contentView.frame.origin.x, 0, contentView.frame.size.width, contentView.frame.size.height + navigationBar.frame.size.height)];
[navController.view bringSubviewToFront:contentView];
for (UIView *customView in contentView.subviews)
customView.frame = CGRectMake(customView.frame.origin.x, customView.frame.origin.y + navigationBar.frame.size.height, customView.frame.size.width, customView.frame.size.height);
[contentView addSubview:navigationBar];
[contentView bringSubviewToFront:navigationBar];
}
This is probably because you have no root view controller, or are otherwise fiddling with the navigation controller in ways it was not meant to be played with. This is how you ought to be setting up the popover:
MyCustomViewController *viewController = [[UIViewController alloc] initWithNibName:#"MyCustomViewController" bundle:nil]; //or storyboard or whatever
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:viewController]; //you should have a root view controller before displaying the popover
tintColor = [UIColor redColor];
UIPopoverController *tempPop = [[UIPopoverController alloc] initWithContentViewController:nav];
[tempPop presentPopoverFromBarButtonItem:mainButtonItem permittedArrowDirections:UIPopoverArrowDirectionUp animated:NO];
There are a few very important things going on here:
Your navigation controller should have a root view controller before you display it.
This code is using a standard UINavigationController instance. According to the documentation, you should not subclass UINavigationController, nor should you try and reinvent the wheel. Apple has created a complex and comprehensive framework, UIKit, that you can use to build amazing apps. If you try and step outside the box, you'll be creating an awful lot of work for yourself without any appreciable benefit.
This is using the tintColor property of the UINavigationBar class. If the tint is insufficient for your UI, you can also set the background image manually (refer to the docs).
If you want to make a popover with a navigation controller, use the built-in UINavigationController class. Don't subclass it and don't reinvent it. To customize the appearance of the navigationBar, use the UI_APPEARANCE_SELECTOR methods in the UINavigationBar class.
I get the solution before add CALayer the UIPopOverController shows like
after adding below lines in table view class i get the following UIPopOverController
#import <QuartzCore/QuartzCore.h>
CALayer *imageLayer2 = self.tableView.layer;
[imageLayer2 setCornerRadius:-20];
[imageLayer2 setBorderWidth:1];
Try it in your project may be it works!!
Thanx
I have tried & replicate the issue you are facing, made some R&D. It's due to the line of code below :
nav.navigationBar.backgroundColor = [UIColor redColor];
While you set the background color of the navigation bar it will behave weird due the native shape of the pop up. Try and remove the below line, you will definitely have issue resolved.
If you are specifying the Rect where the popover appears, we've found that using decimals can result in weird distortions like that. Be sure you're using whole number for origin and size.
I have a customized navigation bar with a image background. I do want to show the title on the background but I need its text for the back button in the next view.
self.title=#"" will not put (naturally) in the back button the previous title.
Based on the suggestion of pheekicks, I found a tip to do it:
UILabel *label = [[UILabel alloc] init];
self.navigationItem.titleView = label;
[[UINavigationBar appearance] setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIColor clearColor], UITextAttributeTextColor, [UIColor clearColor], UITextAttributeTextShadowColor, nil]];
if you want to switch between view controllers, and you want to hide title text of navigation bar, that still appear back button, in root view controller, you should override this method:
- (void) viewDidAppear:(BOOL)animated{
self.navigationItem.titleView = m_anyViewYouWant;
}
This is OK!
This is a fairly old post. But I got around this problem by setting the title in the viewWillDisappear method, so it does not show when the view is displayed, but shows in subsequent views back button.
-(void)viewWillDisappear:(BOOL)animated{
[super viewWillDisappear:animated];
[self setTitle:NSLocalizedString(#"mytext", nil)];
}
Try:
self.titleView.hidden = YES;
I'm using this line to hide the navigation bar on viewDidLoad:
self.navigationController.navigationBarHidden=YES;