Setting a button in every navigation item of a UINavigationController - iphone

I know it is possible to add a custom button in a navigation item using this:
UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeInfoLight];
[infoButton addTarget:self
action:#selector(showInfo:)
forControlEvents:UIControlEventTouchUpInside];
// Add the info button to the navigation bar
UIBarButtonItem *barButtonItem = [[UIBarButtonItem alloc] initWithCustomView:infoButton];
[self.navigationItem setRightBarButtonItem:barButtonItem
animated:YES];
[barButtonItem release];
But is there a way of setting this button in every subview pushed to the navigation stack without having to replicate this code?
Thanks!

You could also subclass UIViewController, then override:
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeInfoLight];
[infoButton addTarget:self action:#selector(showInfo:) forControlEvents:UIControlEventTouchUpInside];
// Add the info button to the navigation bar
UIBarButtonItem *barButtonItem = [[UIBarButtonItem alloc] initWithCustomView:infoButton];
[self.navigationItem setRightBarButtonItem:barButtonItem animated:YES];
[barButtonItem release];
}
return self;
}
then when you make a new VC, subclass this class instead of UIViewController

When pushing a "next" view controller you can add this code:
nextVC.navigationItem.rightBarButtonItem = [self.navigationItem.rightBarButtonItem copy];
But you have to overwrite the selector (if you want your button to send data to your nextViewController object):
[nextVC.navigationItem.rightBarButtonItem setTarget:nextVC ...];

Related

Prevent custom UINavigationBar elements from changing between views

Simple question: in the main view controller of my app (which is in a navigation controller), I am customizing the nav bar with something like this:
self.navigationItem.titleView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"titleImage"]];
UIButton *menuButton = [[UIButton alloc] init];
[menuButton setImage:[UIImage imageNamed:#"menuIcon"] forState:UIControlStateNormal];
[menuButton setFrame:CGRectMake(0, 0, 34, 34)];
UIBarButtonItem *menuItem = [[UIBarButtonItem alloc] initWithCustomView:menuButton];
self.navigationItem.rightBarButtonItem = menuItem;
I want these elements - the title view and the right bar button - to remain consistent throughout the app as I push and pop new view controllers onto and off of my navigation controller.
Of course, I could just set my custom items up in viewDidLoad of every view controller that is pushed onto my navigation stack, but this means that during the animation between two view controllers, my custom items are animated in and out, which is not as clean as I would like.
Any suggestions on how I would go about maintaining those custom elements on my nav bar when switching from vc to vc? Thanks!
You could create your own navigation item class that subclasses UIButton and set all the appearance in that class, then just set your navigation items as those custom UIButtons.
Something like this:
In CustomButton.h
#import <UIKit/UIKit.h>
#interface CustomButton : UIButton
#end
Then in CustomButton.m
#implementation CustomButton
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
//Set images etc.
[menuButton setImage:[UIImage imageNamed:#"menuIcon"] forState:UIControlStateNormal];
[menuButton setFrame:CGRectMake(0, 0, 34, 34)];
}
return self;
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
// Drawing code
}
*/
#end
Then in your viewController:
#import CustomButton.h
- (void)viewDidLoad
{
CustomButton *button = [[CustomButton alloc]init];
self.navigationItem.leftBarButton = [[UIBarButtonItem alloc] initWithCustomView:button];
}

set custom back bar button universally with no title

I want to set custom back bar button for all controllers in the app. I tried using this:
[[UIBarButtonItem appearance]
setBackButtonBackgroundImage:backButtonImage
forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
It sets the image. That's OK. But, what i really want to do is that, i just want a custom button for back bar button which does not contain any title etc. The code above works, but it adds automated titles and resizes the back bar button item. My need is to have a fixed frame, no-title back bar button item for all controllers in the app.
I've resolved it. Just make a category over UIViewController and import it in prefix.pch file. Then write a method: customViewWillAppear: and swizzle it with viewWillAppear method:
+(void)load{
Method viewWillAppear = class_getInstanceMethod(self, #selector(customViewWillAppear:));
Method customViewWillAppear = class_getInstanceMethod(self, #selector(viewWillAppear:));
method_exchangeImplementations(viewWillAppear, customViewWillAppear);
}
Add the above method to that category class. Then implement your customViewWillAppear method like this:
-(void)customViewWillAppear:(BOOL)animated{
[self customViewWillAppear:animated];
if([self.navigationController.viewControllers indexOfObject:self] != 0 && !self.navigationItem.hidesBackButton){
UIBarButtonItem *cancelBarButton = nil;
UIButton* cancelButton = [UIButton buttonWithType:UIButtonTypeCustom];
[cancelButton addTarget:self action:#selector(popViewControllerWithAnimation) forControlEvents:UIControlEventTouchUpInside];
[cancelButton setBackgroundImage:[UIImage imageNamed:#"yourImage.png"] forState:UIControlStateNormal];
[cancelButton sizeButtonToFit];
cancelBarButton = [[UIBarButtonItem alloc] initWithCustomView:cancelButton];
NSMutableArray * leftButtons = [NSMutableArray arrayWithObject:cancelBarButton];
[leftButtons addObjectsFromArray:self.navigationItem.leftBarButtonItems];
[self.navigationItem setLeftBarButtonItem:nil];
[self.navigationItem setLeftBarButtonItems:leftButtons];
}
[self.navigationItem setHidesBackButton:YES];
}
-(void)popViewControllerWithAnimation{
[self.navigationController popViewControllerAnimated:YES];
}
Now, for every controller in your code, you have a custom back button. This took me a lot of time to implement and figure out. Hope it'll help you guys all too.
EDIT:
Please use the following code to support iOS7> back swipe feature;
UIImage *image = [UIImage imageForName:#"some_image"];
navBar.backIndicatorImage = [image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
navBar.backIndicatorTransitionMaskImage = [image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
Create a base view controller and add the following code;
- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"" style:UIBarButtonItemStylePlain target:nil action:nil];
}
I've had a similar problem before and I've searched everywhere for a solution.
The only one I've found, which works for your problem was to implement in EVERY view controller a UILeftBarButton which does the popping.
You can change the background image the way you're doing, but if you set the text to nil or empty text (""), you're button just won't show up.
You also can't change the View of the UIBackBarButton, only it's text (so no custom button).
What i did, was set the backbutton title label alpha to zero, using appearance proxy.
My code in ViewDidLoad:
// Set back button image
if ([[self.navigationController viewControllers] objectAtIndex:0] != self) {
UIButton *btnBack = [UIButton buttonWithType:UIButtonTypeCustom];
btnBack.frame = CGRectMake(0,0,38,30);
[btnBack setBackgroundImage:[UIImage imageNamed:#"NavigationBarBackButton"] forState:UIControlStateNormal];
[btnBack addTarget:self.navigationController action:#selector(popViewControllerAnimated:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *leftBtn = [[UIBarButtonItem alloc] initWithCustomView:btnBack];
[self.navigationItem setLeftBarButtonItem:leftBtn];
}
You could write a category like this,
//
// UINavigationItem+BarAditions.h
//
// Created by Satheeshwaran on on 7/5/13.
//
#import <Foundation/Foundation.h>
#interface UINavigationItem (PersonaAddition)
- (void)setCustomBackButton;
#end
//
// UINavigationItem+BarAditions.m
//
// Created by Satheeshwaran on on 7/5/13.
//
#import "UINavigationItem+PersonaAddition.h"
#implementation UINavigationItem (PersonaAddition)
- (void)setCustomBackButton
{
//customize ur back button here.
UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
backButton.frame=CGRectMake(0, 0, 60, 30);
[backButton addTarget:target action:#selector(didPressLeftItem:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *barItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
self.leftBarButtonItem = barItem;
}
and import this category in all ur files and call the setCustomBackButton in all ur classes. This works fine for me, even in iOS 7.
In ViewDidLoad of all ur classes.
- (void)viewDidLoad
{
[super viewDidLoad];
[self.navigationItem setCustomBackButton];
}
try this code:
UIButton *tempbtn = [[UIButton alloc] init];
[tempbtn setImage:[UIImage imageNamed:#"testbtn.png"] forState:UIControlStateNormal];
UIBarButtonItem *temp = [[UIBarButtonItem alloc] initWithCustomView:tempbtn];
self.navigationItem.rightBarButtonItem = temp;

Bad access exception using xcode 4.2

I am getting "EXC_BAD_ACCESS" when touch the button to call the button action.
#import "TestViewController.h"
#implementation TestViewController
- (id)init
{
self = [super init];
if (self)
{
self.title=#"IOS5 and Xoced 4.2";
UIButton *button=[[UIButton alloc]initWithFrame:CGRectMake(9,6,100,100)];
button.backgroundColor=[UIColor greenColor];
[button addTarget:self action:#selector(buttonAction) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview: button];
}
return self;
}
-(void)viewWillAppear:(BOOL)animated
{
UIBarButtonItem *addButton = [[UIBarButtonItem alloc]initWithTitle:#"Add"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(addAction)];
self.navigationItem.rightBarButtonItem = addButton;
}
-(void)buttonAction
{
printf("Hi i am in buttonAction method");
}
-(void)addAction
{
printf("Hi i am in addAction method");
}
I used ARC enbled in this project.
When I touch the UIBarButtonItem or UIButton I am getting below error.
TestXcode4[2470:207] -[__NSCFString addAction]: unrecognized selector
sent to instance 0x6827b00
Please help me out of this.
If you add this view controller to the window then you don't release that controller after addsubview call. Because window will not retain that view controller.
I just disable the ARC in project setting. then it is working fine....

right bar button not loading in navigation bar

I have the following code inside my #interface FriendsNavController : UINavigationController class implementation. The code is executed. I just don't know why it's not showing the button...
- (void)viewDidLoad {
UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithTitle:#"Add Event" style:UIBarButtonItemStylePlain target:self action:#selector(refreshPropertyList)];
self.navigationItem.rightBarButtonItem = button;
[button release];
[super viewDidLoad];
}
EDIT: I think I misread your question. I set the navigationItem.rightBarButtonItem in the viewDidLoad of the controller that I push onto the navigation controller's stack, not in the viewDidLoad of the navigation controller. I think this is what you'll need to do as well.
Perhaps the call to [super viewDidLoad] is setting the navigation item's buttons back to the default (i.e., none). In my navigation-based app, I make the [super viewDidLoad] call before my code, like this:
- (void)viewDidLoad {
[super viewDidLoad];
UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithTitle:#"Add Event" style:UIBarButtonItemStylePlain target:self action:#selector(refreshPropertyList)];
self.navigationItem.rightBarButtonItem = button;
[button release];
}
and the right button is appearing correctly.

How to add a right button to a UINavigationController?

I am trying to add a refresh button to the top bar of a navigation controller with no success.
Here is the header:
#interface PropertyViewController : UINavigationController {
}
Here is how I am trying to add it:
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithTitle:#"Show" style:UIBarButtonItemStylePlain
target:self action:#selector(refreshPropertyList:)];
self.navigationItem.rightBarButtonItem = anotherButton;
}
return self;
}
Try doing it in viewDidLoad. Generally you should defer anything you can until that point anyway, when a UIViewController is inited it still might be quite a while before it displays, no point in doing work early and tying up memory.
- (void)viewDidLoad {
[super viewDidLoad];
UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithTitle:#"Show" style:UIBarButtonItemStylePlain target:self action:#selector(refreshPropertyList:)];
self.navigationItem.rightBarButtonItem = anotherButton;
// exclude the following in ARC projects...
[anotherButton release];
}
As to why it isn't working currently, I can't say with 100% certainty without seeing more code, but a lot of stuff happens between init and the view loading, and you may be doing something that causes the navigationItem to reset in between.
Try adding the button to the navigationItem of the view controller that is going to be pushed onto this PropertyViewController class you have created.
That is:
MainViewController *vc = [[MainViewController alloc] initWithNibName:#"MainViewController" bundle:nil];
UIButton *infoButton = [UIButton buttonWithType:UIButtonTypeInfoLight];
[infoButton addTarget:self action:#selector(showInfo) forControlEvents:UIControlEventTouchUpInside];
vc.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] initWithCustomView:infoButton] autorelease];
PropertyViewController *navController = [[PropertyViewController alloc] initWithRootViewController:vc];
Now, this infoButton that has been created programatically will show up in the navigation bar. The idea is that the navigation controller picks up its display information (title, buttons, etc) from the UIViewController that it is about to display. You don't actually add buttons and such directly to the UINavigationController.
It seems that some people (like me) may come here looking for how to add a navigation bar button in the Interface Builder. The answer below shows how to do it.
Add a Navigation Controller to your Storyboard
Select your View Controller and then in the Xcode menu choose Editor > Embed In > Navigation Controller.
Alternatively, you could add a UINavigationBar from the Object Library.
Add a Bar Button Item
Drag a UIBarButtonItem from the Object Library to the top navigation bar.
It should look like this:
Set the Attributes
You could double-click "Item" to change the text to something like "Refresh", but there is an actual icon for Refresh that you can use. Just select the Attributes Inspector for the UIBarButtonItem and for System Item choose Refresh.
That will give you the default Refresh icon.
Add an IB Action
Control drag from the UIBarButtonItem to the View Controller to add an #IBAction.
class ViewController: UIViewController {
#IBAction func refreshBarButtonItemTap(sender: UIBarButtonItem) {
print("How refreshing!")
}
}
That's it.
There is a default system button for "Refresh":
- (void)viewDidLoad {
[super viewDidLoad];
UIBarButtonItem *refreshButton = [[[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh
target:self action:#selector(refreshClicked:)] autorelease];
self.navigationItem.rightBarButtonItem = refreshButton;
}
- (IBAction)refreshClicked:(id)sender {
}
You Can use this:
Objective-C
UIBarButtonItem *rightSideOptionButton = [[UIBarButtonItem alloc] initWithTitle:#"Right" style:UIBarButtonItemStylePlain target:self action:#selector(rightSideOptionButtonClicked:)];
self.navigationItem.rightBarButtonItem = rightSideOptionButton;
Swift
let rightSideOptionButton = UIBarButtonItem()
rightSideOptionButton.title = "Right"
self.navigationItem.rightBarButtonItem = rightSideOptionButton
-(void) viewWillAppear:(BOOL)animated
{
UIButton *btnRight = [UIButton buttonWithType:UIButtonTypeCustom];
[btnRight setFrame:CGRectMake(0, 0, 30, 44)];
[btnRight setImage:[UIImage imageNamed:#"image.png"] forState:UIControlStateNormal];
[btnRight addTarget:self action:#selector(saveData) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *barBtnRight = [[UIBarButtonItem alloc] initWithCustomView:btnRight];
[barBtnRight setTintColor:[UIColor whiteColor]];
[[[self tabBarController] navigationItem] setRightBarButtonItem:barBtnRight];
}
For swift 2 :
self.title = "Your Title"
var homeButton : UIBarButtonItem = UIBarButtonItem(title: "LeftButtonTitle", style: UIBarButtonItemStyle.Plain, target: self, action: Selector("yourMethod"))
var logButton : UIBarButtonItem = UIBarButtonItem(title: "RigthButtonTitle", style: UIBarButtonItemStyle.Plain, target: self, action: Selector("yourMethod"))
self.navigationItem.leftBarButtonItem = homeButton
self.navigationItem.rightBarButtonItem = logButton
You can try
self.navigationBar.topItem.rightBarButtonItem = anotherButton;
Here is the solution in Swift (set options as needed):
var optionButton = UIBarButtonItem()
optionButton.title = "Settings"
//optionButton.action = something (put your action here)
self.navigationItem.rightBarButtonItem = optionButton
Why are you subclasses UINavigationController? There is no need to subclass it if all you need to do is add a button to it.
Set up a hierarchy with a UINavigationController at the top, and then in your root view controller's viewDidLoad: method: set up the button and attach it to the navigation item by calling
[[self navigationItem] setRightBarButtonItem:myBarButtonItem];
Swift 4 :
override func viewDidLoad() {
super.viewDidLoad()
navigationItem.leftBarButtonItem = UIBarButtonItem(title: "tap me", style: .plain, target: self, action: #selector(onButtonTap))
}
#objc func onButtonTap() {
print("you tapped me !?")
}
UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 110, 50)];
view.backgroundColor = [UIColor clearColor];
UIButton *settingsButton = [UIButton buttonWithType:UIButtonTypeCustom];
[settingsButton setImage:[UIImage imageNamed:#"settings_icon_png.png"] forState:UIControlStateNormal];
[settingsButton addTarget:self action:#selector(logOutClicked) forControlEvents:UIControlEventTouchUpInside];
[settingsButton setFrame:CGRectMake(40,5,32,32)];
[view addSubview:settingsButton];
UIButton *filterButton = [UIButton buttonWithType:UIButtonTypeCustom];
[filterButton setImage:[UIImage imageNamed:#"filter.png"] forState:UIControlStateNormal];
[filterButton addTarget:self action:#selector(openActionSheet) forControlEvents:UIControlEventTouchUpInside];
[filterButton setFrame:CGRectMake(80,5,32,32)];
[view addSubview:filterButton];
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:view];
Try this.It work for me.
Navigation bar and also added background image to right button.
UIBarButtonItem *Savebtn=[[UIBarButtonItem alloc]initWithImage:[[UIImage
imageNamed:#"bt_save.png"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]
style:UIBarButtonItemStylePlain target:self action:#selector(SaveButtonClicked)];
self.navigationItem.rightBarButtonItem=Savebtn;
UIBarButtonItem *rightBarButtonItem = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:#selector(add:)];
self.navigationItem.rightBarButtonItem = rightBarButtonItem;
- (void)viewWillAppear:(BOOL)animated
{
[self setDetailViewNavigationBar];
}
-(void)setDetailViewNavigationBar
{
self.navigationController.navigationBar.tintColor = [UIColor purpleColor];
[self setNavigationBarRightButton];
[self setNavigationBarBackButton];
}
-(void)setNavigationBarBackButton// using custom button
{
UIBarButtonItem *leftButton = [[UIBarButtonItem alloc] initWithTitle:#" Back " style:UIBarButtonItemStylePlain target:self action:#selector(onClickLeftButton:)];
self.navigationItem.leftBarButtonItem = leftButton;
}
- (void)onClickLeftButton:(id)sender
{
NSLog(#"onClickLeftButton");
}
-(void)setNavigationBarRightButton
{
UIBarButtonItem *anotherButton = [[UIBarButtonItem alloc] initWithTitle:#"Show" style:UIBarButtonItemStylePlain target:self action:#selector(onClickrighttButton:)];
self.navigationItem.rightBarButtonItem = anotherButton;
}
- (void)onClickrighttButton:(id)sender
{
NSLog(#"onClickrighttButton");
}
self.navigationItem.rightBarButtonItem =[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:#selector(refreshData)];
}
-(void)refreshData{
progressHud= [MBProgressHUD showHUDAddedTo:self.navigationController.view animated:YES];
[progressHud setLabelText:#"拼命加载中..."];
[self loadNetwork];
}
You should add your barButtonItem in - (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated method.
Just copy and paste this Objective-C code.
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
[self addRightBarButtonItem];
}
- (void) addRightBarButtonItem {
UIButton *btnAddContact = [UIButton buttonWithType:UIButtonTypeContactAdd];
[btnAddContact addTarget:self action:#selector(addCustomerPressed:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *barButton = [[UIBarButtonItem alloc] initWithCustomView:btnAddContact];
self.navigationItem.rightBarButtonItem = barButton;
}
#pragma mark - UIButton
- (IBAction)addCustomerPressed:(id)sender {
// Your right button pressed event
}
This issue can occur if we delete the view controller or try to add new view controller inside the interface builder(main.storyboard). To fix this issue, it requires to add "Navigation Item" inside new view controller. Sometimes it happens that we create new view controller screen and it does not connect to "Navigation Item" automatically.
Go to the main.storyboard.
Select that new view Controller.
Go to the document outline.
Check view Controller contents.
If new view controller does not have a Navigation item then, copy Navigation item from previous View Controller and paste it into the new view controller.
save and clean the project.
Also you are able to add multiple buttons using rightBarButtonItems
-(void)viewDidLoad{
UIBarButtonItem *button1 = [[UIBarButtonItem alloc] initWithTitle:#"button 1" style:UIBarButtonItemStylePlain target:self action:#selector(YOUR_METHOD1:)];
UIBarButtonItem *button2 = [[UIBarButtonItem alloc] initWithTitle:#"button 2" style:UIBarButtonItemStylePlain target:self action:#selector(YOUR_METHOD2:)];
self.navigationItem.rightBarButtonItems = #[button1, button2];
}
#Artilheiro : If its a navigationbased project, u can create BaseViewController. All other view will inherit this BaseView. In BaseView u can define generic methods to add right button or to change left button text.
ex:
#interface BaseController : UIViewController {
}
- (void) setBackButtonCaption:(NSString *)caption;
(void) setRightButtonCaption:(NSString *)caption selectot:(SEL )selector;
#end
// In BaseView.M
(void) setBackButtonCaption:(NSString *)caption
{
UIBarButtonItem *backButton =[[UIBarButtonItem alloc] init];
backButton.title= caption;
self.navigationItem.backBarButtonItem = backButton;
[backButton release];
}
- (void) setRightButtonCaption:(NSString *)caption selectot:(SEL )selector
{
UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] init];
rightButton.title = caption;
rightButton.target= self;
[rightButton setAction:selector];
self.navigationItem.rightBarButtonItem= rightButton;
[rightButton release];
}
And now in any custom view, implement this base view call the methods:
#interface LoginView : BaseController {
In some method call base method as:
SEL sel= #selector(switchToForgotPIN);
[super setRightButtonCaption:#"Forgot PIN" selectot:sel];