When I push a view onto the navigation controller the back button's title get's set to the title of the previous view. How can I get the back button to just say "Back"?
Write this code in your viewwillappear:
UIBarButtonItem *_backButton = [[UIBarButtonItem alloc] initWithTitle:#"Back" style:UIBarButtonItemStyleDone target:nil action:nil];
self.navigationItem.backBarButtonItem = _backButton;
[_backButton release];
_backButton = nil;
In the previous view controller, have it set its title in viewWillAppear, and then in the code that pushes the new view controller, have it change its title to 'Back.'
Example:
-(void)showNextScreen{
[self setTitle:#"Back"];
[self.navigationController pushViewController:asdf animated:YES];
}
-(void)viewWillAppear{
[super viewWillAppear];
[self setTitle:#"My Actual Title"];
}
Related
I want to change leftBarButton title. I've tried this
UIBarButtonItem *newBackButton =
[[UIBarButtonItem alloc] initWithTitle:#"Back"
style:UIBarButtonItemStyleBordered
target:nil
action:nil];
[[self navigationItem] setLeftBarButtonItem:newBackButton];
but it brings changes like
But I want it like
How it can be possible?
It may helpful for you
UIBarButtonItem *backBarButton = [[UIBarButtonItem alloc] initWithTitle:#"Back" style:UIBarButtonItemStyleDone target:self action:#selector(backAction:)];
self.navigationItem.leftBarButtonItem = backBarButton;
From the view controller (ViewController1) that is pushing the next view controller (ViewController2), you need to set the backBarButtonItem.
#implementation ViewController1
- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"New Title" style:UIBarButtonItemStylePlain target:nil action:nil];
}
It's totally normal that you don't see any arrow in your back button. That's because you're creating a new bar button that you set its title and its style. But the style you've set for your bar button item won't give you what you wanted.
I suppose that you're using UINavigationController to navigate. If it's the case, you need to get a reference to navigationBar that UINavigationController displays on the screen. Then, you'll be able to change its color via tint color property. So,
[self.navigationController.navigationBar setTintColor:[UIColor redColor]];
would do what you want to achieve. Here is the image i obtained using the code i mentioned above.
If you're not using UINavigationController, the simplest solution is to provide an image for your back button which has already an arrow.
You should set backBarButtonItem instead of leftBarButtonItem. And remember to set it not in current view controller (where you wish it to be displayed) but in parent one (to which this button will return you).
Use this Code and
UIButton *backBtn = [UIButton buttonWithType:UIButtonTypeCustom];
UIImage *backBtnImage = [UIImage imageNamed:#"BackBtn.png"] ;
[backBtn setBackgroundImage:backBtnImage forState:UIControlStateNormal];
[backBtn addTarget:self action:#selector(goback) forControlEvents:UIControlEventTouchUpInside];
backBtn.frame = CGRectMake(0, 0, 54, 30);
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithCustomView:backBtn] ;
self.navigationItem.leftBarButtonItem = backButton;
and for going to back use this method .
-(void)goback
{
[self.navigationController popViewControllerAnimated:YES];
}
This worked for me
UIImage *image = [[UIImage imageNamed:#"btn_back.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithImage:image style:UIBarButtonItemStylePlain target:self action:#selector(backAction:)];
self.navigationItem.leftBarButtonItem = button;
- (IBAction)backAction:(id)sender
{
MainMenuViewController *mainMenuViewController = [[MainMenuViewController alloc] init];
[self.navigationController pushViewController:mainMenuViewController animated:YES];
}
Here's my code for removing the back UIBarButtonItem of a navigation bar and replacing it with a cancel button:
UIBarButtonItem *cancelButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"Cancel" style:UIBarButtonItemStylePlain target:nil action:nil];
self.navigationItem.hidesBackButton = YES;
self.navigationItem.leftBarButtonItem = cancelButtonItem;
Every example I've seen online doesn't hide the backButton before replacing it with a custom item. I may be wrong but it just seems like one unneeded line of code.
Did you try using UIBarButtonSystemItemCancel instead of UIBarButtonItemStylePlain in the style of your UIBarButtonItem?
Try this,
UIBarButtonItem* cancelButton = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:#selector(cancelAction)];
self.navigationItem.leftBarButtonItem = cancelButton;
Also if you have used self.navigationItem.backBarButtonItem in your parentViewController, it will show that button in the childViewController's leftBarButtonItem by default, if your custom leftBarButton in the childViewController is not added properly.
Try this.
Write this in your app delegates did finish launching.
LoginViewController *loginVc = [[LoginViewController alloc] initWithNibName:#"LoginViewController" bundle:nil];
self.navigationController = [[UINavigationController alloc] initWithRootViewController:loginVc];
self.window.rootViewController = self.navigationController;
self.navigationController.navigationBarHidden =YES;
// and use uibutton in your view controller at place of back button or cancel button
// and u can push or pop your view from there.
I'm using the following code to push a view controller when user click on a UIButton
- (IBAction)showListPicker:(id)sender {
if([audioPlayer isPlaying])
{
[audioPlayer stop];
}
ListPicker *lp = [[ListPicker alloc] initWithStyle:UITableViewStyleGrouped];
[[self navigationController] pushViewController:lp animated:YES];
[lp release];
}
In the ViewDidLoad of ListPicker I use the following code to add right navigational control button
-(void)viewDidLoad{
[[self navigationController] setNavigationBarHidden:NO];
[[[self navigationController] navigationBar] setTintColor:[UIColor brownColor]];
[[self view] setBackgroundColor:[UIColor colorWithPatternImage:[UIImage imageNamed:#"background.png"]]];
UIBarButtonItem *button = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemAdd
target:self
action:#selector(doSomething:)];
[[self navigationItem] setRightBarButtonItem:button];
[button release];
}
When the view is loaded, I can see the right button briefly but then it disappear right away. What am I doing wrong?
Thank you.
My guess is that your ListPicker's XIB contains another navigation bar, obstructing the actual navigation controller's bar. This is why you see it for an instant and then it "disappears". If it's not something in the XIB, check the code all the way from instantiating that new view controller until the viewDidAppear of ListPicker.
I want to add two Buttons on top of UIPopoverController like it is shown in following screenshots:
HTML Edit
Thanks for helping me!
Add your view controller to a UINavigationController, then add the Navigation Controller to the UIPopoverController. Then in your UIViewController's viewDidLoad method, put this code in:
UIBarButtonItem *okButton = [[UIBarButtonItem alloc] initWithTitle:#"Ok" style:UIBarButtonItemStyleBordered target:self action:#selector(okayButtonPressed)];
UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc] initWithTitle:#"Cancel" style:UIBarButtonItemStyleBordered target:self action:#selector(cancelButtonPressed)];
self.navigationItem.title = #"My Title";
[self.navigationItem setLeftBarButtonItem:cancelButton animated:NO];
[self.navigationItem setRightBarButtonItem:okButton animated:NO];
[cancelButton release];
[okButton release];
You need to initialize your popover with a UINavigationController directly. Then set the root view to your custom view controller.
UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:yourViewController];
UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:navigationController];
Use a UINavigationController as the pop-over. Then, access the .navigationBar property of the navigation controller, get the .topItem, and set its .leftBarButtonItem and .rightBarButtonItem.
I wouldnt use a navigationcontroller like the previous posters suggested, apple recommends not using navigationcontrollers on ipad (with good reason) it doesnt behave as youd expect when pushing VC into the stack when used in popovers, now you dont really want to use the "navigation" aspect of it, but i wouldnt use navigationcontroller just because uw ant the bar....Use a UIToolBar instead, and set its buttons to whatever you want...no need to use a navigation controller here...
When I do this my navBar doesn't seem to fit properly inside of the UIPopoverController, as shown in the below:
http://www.flickr.com/photos/coleorton/4752223066/
Here's what I'm doing:
// alloc the Direct Reports view controller.
ToolsViewController *toolsViewController = [[[ToolsViewController alloc] init] autorelease];
UINavigationController *toolsNavController = [[[UINavigationController alloc] initWithRootViewController:toolsViewController] autorelease];
toolsNavController.title = #"Tools";
toolsNavController.view.frame = CGRectMake(0.0, -10.0, 320.0, POPOVER_HEIGHT);
if(![self.toolsPopoverController isPopoverVisible]){
// show popover
self.toolsPopoverController = [[[UIPopoverController alloc] initWithContentViewController:toolsNavController] autorelease];
self.toolsPopoverController.delegate = self;
self.toolsPopoverController.popoverContentSize = CGSizeMake(320.0, POPOVER_HEIGHT);
[self.toolsPopoverController presentPopoverFromBarButtonItem:sender
permittedArrowDirections:UIPopoverArrowDirectionAny
animated:YES];
} else {
// close popover
[self.toolsPopoverController dismissPopoverAnimated:YES];
}
This worked!
//Determine how to present this view based on device
if ([UIDevice currentDevice ].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
BNRAssetTypeViewController *contentViewController = [[BNRAssetTypeViewController alloc] init];
UINavigationController *popOverNavigation = [[UINavigationController alloc] initWithRootViewController:contentViewController];
self.assetPickerPopover = [[UIPopoverController alloc] initWithContentViewController:popOverNavigation];
[self.assetPickerPopover presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
then in the init function of contentViewController add this
//add a barbutton item which will help in adding new type
UIBarButtonItem *bbi = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:#selector(addNew:)];
//set bar item to right side of navbarite
self.navigationItem.rightBarButtonItem =bbi ;
i am not sure what i am missing here. I Have a custom UINavigationController and i am trying to add a persistant UIBarButtonItem to the bar.
-(void)viewDidLoad
{
self.navigationBar.barStyle = UIBarStyleBlack;
UIBarButtonItem *bbi = [[UIBarButtonItem alloc] initWithTitle:#"Nope..."
style:UIBarButtonItemStyleBordered
target:self
action:#selector(goBack:)];
self.navigationItem.leftBarButtonItem =bbi;
[bbi release];
}
-(void)goBack:(id)sender
{
NSLog(#"go back now");
}
what am i missing here? - BTW, i do not want to/ will not use IB.
UPDATE:
Currently this is the closest i can get:
-(void)viewDidLoad
{
self.navigationBar.barStyle = UIBarStyleBlack;
UINavigationBar *navBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 20, 320, 44)];
navBar.barStyle = UIBarStyleBlack;
UINavigationItem *navItem = [[UINavigationItem alloc] initWithTitle:#"Currently Playing..."];
[navBar pushNavigationItem:navItem animated:NO];
UIBarButtonItem *editButton = [[UIBarButtonItem alloc] initWithTitle:#"Close" style:UIBarButtonItemStyleBordered target:self action:#selector(goBack:)];
navItem.rightBarButtonItem = editButton;
[self.view addSubview:navBar];
[editButton release];
[navItem release];
[navBar release];
[super viewDidLoad];
}
It's terrible i have to add an entire navbar to a UINavigationController that already has a navbar....if i try to use the existing, i get this error:
'NSInternalInconsistencyException', reason: 'Cannot call pushNavigationItem:animated: directly on a UINavigationBar managed by a controller.'
....really???
navigationItem must not be set on the UINavigationController instance but on the view controller of the view which is displayed "inside" the navigation controller.
Setting self.navigationItem on your navigation controller would work if your controller was itself pushed into another navigation controller.