Set UINavigationBar background image in ViewController - iphone

I am able to set the background for my navbar to a custom image in the app delegate didFinishLaunchingWithOptions method with this code:
UIImage *navBarImage;
navBarImage = [UIImage imageNamed:#"navbar.png"];
[[UINavigationBar appearance] setBackgroundImage: navBarImage forBarMetrics:UIBarMetricsDefault];
I'm trying to add an option in my app to change the background image of the navbar when a switch is toggled, however it does not seem to work. Is it only possible to set the background image when the app launches? How can I do this after the app has already launched?
This is the code I have:
- (void) switchChanged:(id)sender {
UISwitch* switchView = sender;
if (switchView.isOn) {
UIImage *navBarImage = [UIImage imageNamed:#"black_nav.png"];
[[UINavigationBar appearance] setBackgroundImage: navBarImage forBarMetrics:UIBarMetricsDefault];
}
else {
UIImage *navBarImage = [UIImage imageNamed:#"white_nav.png"];
[[UINavigationBar appearance] setBackgroundImage: navBarImage forBarMetrics:UIBarMetricsDefault];
}
}

Use setBackgroundImage:forBarMetrics: method:
[navbar setBackgroundImage:[UIImage imageNamed:#"navbar"]
forBarMetrics:UIBarMetricsDefault];

You can replace the default in each view doing this:
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0,0,
self.navigationController.navigationBar.frame.size.width,
self.navigationController.navigationBar.frame.size.height)];
[imageView setImage:[UIImage imageNamed:#"newImage.png"]];
[self.navigationController.navigationBar addSubview:imageView];
[self.navigationController.navigationBar sendSubviewToBack:imageView];

Try this one
// Create resizable images
UIImage *gradientImage44 = [[UIImage imageNamed:#"surf_gradient_textured_44"]
resizableImageWithCapInsets:UIEdgeInsetsMake(0, 0, 0, 0)];
UIImage *gradientImage32 = [[UIImage imageNamed:#"surf_gradient_textured_32"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 0, 0, 0)];
// Set the background image for all UINavigationBars
[[UINavigationBar appearance] setBackgroundImage:gradientImage44 forBarMetrics:UIBarMetricsDefault];
[[UINavigationBar appearance] setBackgroundImage:gradientImage32 forBarMetrics:UIBarMetricsLandscapePhone];

Related

change navigationbar on only one view

I have set a custom navigationbar in my appdelegate. You can see the code over here.
UIImage *image = [UIImage imageNamed:#"navbar.png"];
[[UINavigationBar appearance] setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];
But now I'm working with the eventkit framework. What I want is when I go to eventdetails, that I get the standard navbar layout.So without the image.
EKEventViewController *vc = [[EKEventViewController alloc] init];
[vc.navigationController.navigationBar setBackgroundImage:nil forBarMetrics:UIBarMetricsDefault];
vc.event = [dataSource eventAtIndexPath:indexPath];
vc.allowsEditing = YES;
[calendar.navigationController pushViewController:vc animated:YES];
I've tried the following but it is not working.
Any help?
you can do one thing, take the screenshot of one viewController with default navigation bar , just crop only navigation bar area i.e. make image of 320 x 44 size.
when you want again your by default navigation bar , that time use this cropped image as background of navigation bar ,add following code
UIImage *image = [UIImage imageNamed:#"defaultNavbar.png"];
[[UINavigationBar appearance] setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];
again when you navigate to another viewController having custom Navimage then again draw nav image by help of your custom image code i.e.
UIImage *image = [UIImage imageNamed:#"navbar.png"];
[[UINavigationBar appearance] setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];

Navigation bar image black

In my application i add custom navigation image while adding the remaining part of the image shows black in color, i used following code,
UIImage *image = [UIImage imageNamed: #"navbar.png"];
[self.navigationController.navigationBar setBackgroundImage:image forBarMetrics:UIBarStyleDefault];
i want to show the back ground color in the in the black color part.what should change in code?
Please Try Following may be it works fine.
UINavigationBar *navBar = [[self navigationController] navigationBar];
UIImage *backgroundImage = [UIImage imageNamed:#"navbar.png"];
[navBar setBackgroundImage:backgroundImage forBarMetrics:UIBarMetricsDefault];
Edited
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"navbar.png"] forBarMetrics:UIBarMetricsDefault];
self.navigationController.navigationBar.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:#"navbar.png"]];
I'm using very useful library (class SCNavigationBar) for styling navigaitonBar, download it here
It supports all orientations, it works with no problem in my many apps.

How to set a picture programmatically in a NavBar?

I have a detailview with a navigation bar with a back button and a name for the view.
The navigation bar is set programmatically.
The name presented is set like this.
self.title = NSLocalizedString(name, #"");
The name depends on the presented view.
Now I would like to also present a small icon on the navigation bar which also is depends on the view.
How do I do that?
You can set backGround image to navigationBar Using this
Put in didFinishLaunchingWithOptions
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"title_bar.png"] forBarMetrics:UIBarMetricsDefault];
Or you can set navigation bar image in any view using
UINavigationBar *navBar = [[self navigationController] navigationBar];
UIImage *image = [UIImage imageNamed:#"TopBar.png"];
[navBar setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];
Or you can set a view on your NavigationBar Link
[[UINavigationBar appearance] addSubview:yourView];
or
self.navigationItem.titleView = YourView;
And set title using h
self.navigationItem.title = #"Your Title"; 
And you can get navigationBarButton using this
-(void)getRightBarBtn
{
UIButton *Btn =[UIButton buttonWithType:UIButtonTypeCustom];
[Btn setFrame:CGRectMake(0.0f,0.0f,68.0f,30.0f)];
[Btn setBackgroundImage:[UIImage imageNamed:[NSString stringWithFormat:#"yourImage.png"]] forState:UIControlStateNormal];
//[Btn setTitle:#"OK" forState:UIControlStateNormal];
//Btn.titleLabel.font = [UIFont fontWithName:#"Georgia" size:14];
[Btn addTarget:self action:#selector(yourBtnPress:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithCustomView:Btn];
[self.navigationItem setRightBarButtonItem:addButton];
}
And set simple imageView on navigation Bar
UIImageView *image = [[UIImageView alloc]initWithImage:[UIImage imageNamed:#"star.png"]];
UIBarButtonItem *backBarButton = [[UIBarButtonItem alloc] initWithCustomView:image];
self.navigationItem.rightBarButtonItem = backBarButton;
You need to subclass UINavigationBar. Then in drawRect do something like:
[[UIImage imageNamed...] drawInRect:...]
and call the super method ofcourse
Add this code into viewDidLoad in your ViewController:
UIImage *image = [UIImage imageNamed: #"myIcon.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.frame = CGRectMake(5, 2, 100, 39);
[self.navigationController.navigationBar addSubview:imageView];
imageView can also be declared as an instance variable, so you can access it after you've added it (e.g. if you want to remove your icon from your navigationBar at some point).
UIButton *homeBtn=[[UIButton alloc] initWithFrame:CGRectMake(0, 0, 46, 28)];
[homeBtn setBackgroundImage:[UIImage imageNamed:#"homeBtn.png"] forState:UIControlStateNormal];
[homeBtn addTarget:self action:#selector(homeBtnPressed) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *navHomeBtn=[[[UIBarButtonItem alloc] initWithCustomView:homeBtn] autorelease];
self.navigationItem.rightBarButtonItem=navHomeBtn;
[homeBtn release];

Change Navigation bar Background image on each navigation

I am working on iPhone app. I have added Navigation bar Background image
With interface: -
#interface UINavigationBar (backgroundImageWithTitle)
And method: -
- (void)drawRect:(CGRect)rect
By this method Navigation bar background images is being set one time.
I want to call it from different .m files for assigning different images on bar.
How it can be implemented?
Thanks in advance.
CustomNavigation.h
#import <Foundation/Foundation.h>
#interface UINavigationBar (UINavigationBarCustomDraw){
}
#end
CustomNavigation.m
#implementation UINavigationBar (UINavigationBarCustomDraw)
- (void) drawRect:(CGRect)rect {
[self setTintColor:[UIColor colorWithRed:0.5f
green: 0.5f
blue:0
alpha:1]];
if ([self.topItem.title length] > 0) {
if ([self.topItem.title isEqualToString:#"First"]) {
[[UIImage imageNamed:#"First.png"] drawInRect:rect];
}
else if ([self.topItem.title isEqualToString:#"Second"]) {
[[UIImage imageNamed:#"Second.png"] drawInRect:rect];
}
CGRect frame = CGRectMake(0, 0, 320, 44);
UILabel *label = [[[UILabel alloc] initWithFrame:frame] autorelease];
[label setBackgroundColor:[UIColor clearColor]];
label.font = [UIFont boldSystemFontOfSize: 20.0];
label.shadowColor = [UIColor colorWithWhite:0.0 alpha:1];
label.textAlignment = UITextAlignmentCenter;
label.textColor = [UIColor whiteColor];
label.text = self.topItem.title;
self.topItem.titleView = label;
}
else {
[[UIImage imageNamed:#"wood.png"] drawInRect:rect];
self.topItem.titleView = [[[UIView alloc] init] autorelease];
}
}
#end
if u want to First.png to set navigationBar background image in FirstViewController then
in ur FirstViewController.m
-(void) viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
self.title=#"First";
[self.navigationController.navigationBar drawRect:CGRectMake(0, 0, 320, 480)];
}
if u want to Second.png to set navigationBar background image in SecondViewController then
in ur SecondViewController.m
-(void) viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
self.title=#"Second";
[self.navigationController.navigationBar drawRect:CGRectMake(0, 0, 320, 480)];
}
On iOS 5 this will not work but the good news is that there is a simple way of doing this
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"name"] forBarMetrics:UIBarMetricsDefault];
NOTE: This will only work on iOS 5 and above so make sure you check iOS version if you want to be backwards compatible.
Or other option so that code runs only incase of iOS 5
if([[UINavigationBar class] respondsToSelector:#selector(appearance)]) //iOS >=5.0
{
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"navigationBar.png"] forBarMetrics:UIBarMetricsDefault];
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"navBar-Landscape.png"] forBarMetrics:UIBarMetricsLandscapePhone];
}
I have tried this
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"name"] forBarMetrics:UIBarMetricsDefault];
It works fine for iOS 5.0 but got crashed in iOS 4.3 or below.
You have either set conditional i.e for
iOS 5
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"name"] forBarMetrics:UIBarMetricsDefault];
else
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"name"]];
but still there is issue that it shows line under image.
Or you can do in this way
self.navigationItem.hidesBackButton = YES;
UINavigationBar *navBar = self.navigationController.navigationBar;
UIImage *image = [UIImage imageNamed:#"image.png"];
UIView *tempView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 45)];
UIImageView *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 45)];
imgView.image = image;
[tempView addSubview:imgView];
[navBar clearBackgroundImage];
[navBar addSubview:tempView];
[tempView release];
You can try in this way
if([[UINavigationBar class] respondsToSelector:#selector(appearance)]) //iOS >=5.0
{
//[[UINavigationBar appearance] setFrame:CGRectMake(0, 0, 320, 40)];
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"navigationBar.png"] forBarMetrics:UIBarMetricsDefault];
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"navBar-Landscape.png"] forBarMetrics:UIBarMetricsLandscapePhone];
[[UINavigationBar appearance] setBarStyle:UIBarStyleBlack];
}
and in else case you can add previous code i.e setBackgroundImage ....
Using (SDK 3.2.5.) - In one of my Apps I needed navigationBar with custom image both in landscape and portrait.
What I did was:
#implementation UINavigationBar (BackgroundImage)
- (void)drawRect:(CGRect)rect
{
UIImage *image;
if(self.frame.size.width == 320) //for iPhone - portrait will have 320 pix width.
{
image = [UIImage imageNamed: #"portraitNavigationBar.png"];
}
else
{
image = [UIImage imageNamed: #"landscapeNavigationBar.png"];
}
[image drawInRect:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
}
#end
Luckily my app supports rotation - so, when rotating - navigation bar automatically redraws itself.
But to manually redraw it - you can also call :
[navigationController.navigationBar setNeedsDisplay];

Adding image to navigation bar

I'd like an image to take up all of a navigation bar. This is the navigation that comes with a navigation based app. It appears on the RootViewController with the accompanying UITableView. I've seen some examples of how this might work.
Set navigation bar title:
UIImage *image = [UIImage imageNamed:#"TableviewCellLightBlue.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
[self.navigationController.navigationBar.topItem setTitleView:imageView];
The problem there is it only covers the title rather than the entire navigation bar.
There is also this thread: http://discussions.apple.com/message.jspa?messageID=9254241#9254241. Towards the end, the solution looks to use a tab bar, which I'm not using. It is that complicated to set a navigation bar background? Is there some other simpler technique?
I'd like to have a background for the navigation and still be able to use title text.
In your case, this solution found in another answer would work well.
With the "CustomImage" category added to UINavigationBar,
you can then just call:
UINavigationBar *navBar = self.navigationController.navigationBar;
UIImage *image = [UIImage imageNamed:#"yourNavBarBackground.png"];
[navBar setBackgroundImage:image];
This code should go in the method
- (void)viewWillAppear:(BOOL)animated
of the view controller where you want to have the custom image.
And, in that case you should better call:
[navBar clearBackgroundImage]; // Clear any previously added background image
before setBackgroundImage (otherwise it will be added multiple times...)
its changed for ios6, to make it work in ios 6 use:
UINavigationBar *navBar = self.navigationController.navigationBar;
UIImage *image = [UIImage imageNamed:#"image.png"];
[navBar setBackgroundImage:image forBarMetrics:UIBarMetricsDefault];
UIImage *image = [UIImage imageNamed:#"YourImage.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
[self.navigationController.navigationBar addSubview:imageView];
There is actually a much easier way to add a background image to any UIView class or subclass. It requires no class categorization or extension (subclassing), and you can do this on an "as needed" basis. For example, to add a background image to a view controller's navigation bar, do the following:
self.navigationController.navigationBar.layer.contents = (id)[UIImage
imageNamed:#"background.png"].CGImage;
You'll need to remember to add the Quartz Core framework to your project and add #import <QuartzCore/QuartzCore.h> wherever you need to do this. This is a much cleaner, simpler way to alter the drawing layer of anything that inherits from UIView. Of course, if you want to accomplish a similar effect for all navigation bars or tab bars, then subclassing makes sense.
UIImage *logo = [UIImage imageNamed:#"my_logo"];
UIImageView *logoView = [[UIImageView alloc]initWithImage:logo];
logoView.frame = CGRectMake(0, 0, 320, 37);
UINavigationController *searchNavCtrl = [[UINavigationController alloc] initWithRootViewController:searchViewController];
searchNavCtrl.navigationBar.barStyle = UIBarStyleBlack;
//searchNavCtrl.navigationItem.titleView = logoView;
//[searchNavCtrl.navigationController.navigationBar.topItem setTitleView:logoView];
[searchNavCtrl.navigationBar addSubview:logoView];
[logoView release];
Just add this line .
[self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:#"NavBar.png"] forBarMetrics:UIBarMetricsDefault];
Bam! One line and done.
I used cmp's solution and added some logic to remove it as I only wanted a custom background image on home screen within on view appear.
HomeViewController.m
UIImage *image = [UIImage imageNamed:#"HomeTitleBG.png"];
UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.tag = 10;
UIImageView *testImgView = (UIImageView *)[self.navigationController.navigationBar viewWithTag:10];
if ( testImgView != nil )
{
NSLog(#"%s yes there is a bg image so remove it then add it so it doesn't double it", __FUNCTION__);
[testImgView removeFromSuperview];
} else {
NSLog(#"%s no there isn't a bg image so add it ", __FUNCTION__);
}
[self.navigationController.navigationBar addSubview:imageView];
[imageView release];
I also tried to use the suggested clearBackgroundImage method but couldn't get it to work so I gave the image a tag and then removed it in the other viewcontrollers on view will appear.
OtherViewController.m
UIImageView *testImgView = (UIImageView *)[self.navigationController.navigationBar viewWithTag:10];
if ( testImgView != nil )
{
NSLog(#"%s yes there is a bg image so remove it", __FUNCTION__);
[testImgView removeFromSuperview];
}
`
just go the view controller and paste in super viewdidload
and replace your image in mainlogo and then set the navigation title in set your image logo
- (void)viewDidLoad
{
[super viewDidLoad];
//set your image frame
UIImageView *image=[[UIImageView alloc]initWithFrame:CGRectMake(0,0,70,45)] ;
//set your image logo replace to the main-logo
[image setImage:[UIImage imageNamed:#"main-logo"]];
[self.navigationController.navigationBar.topItem setTitleView:image];
}
Add code in appdelegate did finish with launching method
#define UIColorFromRGB(rgbValue) [UIColor colorWithRed:((float)((rgbValue & 0xFF0000) >> 16))/255.0 green:((float)((rgbValue & 0xFF00) >> 8))/255.0 blue:((float)(rgbValue & 0xFF))/255.0 alpha:1.0]
if([[[UIDevice currentDevice] systemVersion] floatValue] < 7.0)
{
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"navigation_or.png"] forBarMetrics:UIBarMetricsDefault];
[[UINavigationBar appearance] setTitleVerticalPositionAdjustment:0.0 forBarMetrics:UIBarMetricsDefault];
}
else
{
[[UINavigationBar appearance] setBarTintColor:UIColorFromRGB(0x067AB5)];
[[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];
// Uncomment to assign a custom backgroung image
[[UINavigationBar appearance] setBackgroundImage:[UIImage imageNamed:#"navigation_or.png"] forBarMetrics:UIBarMetricsDefault];
// Uncomment to change the back indicator image
[[UINavigationBar appearance] setShadowImage:[[UIImage alloc] init]];
[[UINavigationBar appearance] setBackgroundColor:[UIColor whiteColor]];
[[UINavigationBar appearance] setBackIndicatorTransitionMaskImage:[UIImage imageNamed:#""]];
// Uncomment to change the font style of the title
NSShadow *shadow = [[NSShadow alloc] init];
shadow.shadowColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.8];
shadow.shadowOffset = CGSizeMake(0, 0);
[[UINavigationBar appearance] setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:[UIColor colorWithRed:245.0/255.0 green:245.0/255.0 blue:245.0/255.0 alpha:1.0], NSForegroundColorAttributeName,shadow, NSShadowAttributeName,[UIFont fontWithName:#"HelveticaNeue-Bold" size:17], NSFontAttributeName, nil]];
[[UINavigationBar appearance] setTitleVerticalPositionAdjustment:0.0 forBarMetrics:UIBarMetricsDefault];
}