I have created programmatically 2 UIBarButtonItem from a UIButton. The Nav Controller is in a UITabBar. When I move to another controller in the same UITabBar, these 2 UIBarButton do not get removed. Anyone has an idea on how to delete these 2 UIBarButtonItem
- (void)viewWillAppear:(BOOL)animated {
// Left Tab Bar Items
UIButton *fbutton = [[UIButton alloc] init];
[fbutton setImage:[[UIImage imageNamed:#"ble"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] forState:UIControlStateNormal];
[fbutton addTarget:self action:nil forControlEvents:UIControlEventTouchUpInside];
fbutton.frame=CGRectMake(0, 0, 48 , 48);
UIBarButtonItem *fBLEItem = [[UIBarButtonItem alloc] initWithCustomView:fbutton];
fBLEItem.enabled = NO;
UIButton *tbutton = [[UIButton alloc] init];
[tbutton setImage:[[UIImage imageNamed:#"ble"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] forState:UIControlStateNormal];
[tbutton addTarget:self action:nil forControlEvents:UIControlEventTouchUpInside];
tbutton.frame=CGRectMake(0, 0, 48, 48);
UIBarButtonItem *tBLEItem = [[UIBarButtonItem alloc] initWithCustomView:tbutton];
tBLEItem.enabled = NO;
self.tabBarController.navigationItem.leftItemsSupplementBackButton = YES;
self.tabBarController.navigationItem.leftBarButtonItems = #[fBLEItem,tBLEItem];
}
- (void) viewWillDisappear:(BOOL)animated {
[self.navigationItem setLeftBarButtonItem:nil animated:NO];
[self.navigationItem setRightBarButtonItem:nil animated:NO];
}
You are setting the UIBarButtonItem on self.tabBarController.navigationItem but then setting nil on self.navigationItem. These are two different things. Try:
[self.tabBarController.navigationItem setLeftBarButtonItem:nil animated:NO];
[self.tabBarController.navigationItem setRightBarButtonItem:nil animated:NO];
Related
This question already has answers here:
UINavigationBar Hide back Button Text
(36 answers)
Closed 5 years ago.
My Doubt is How to hide Navigation Bar title "BACK" from backbutton (but need to show backbutton Arrow.)
Thank You.
Use this:
YourViewController *viewController = [self.storyboard instantiateViewControllerWithIdentifier:#"YourViewController"];
self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:#"" style:UIBarButtonItemStylePlain target:nil action:nil];
[self.navigationController pushViewController:viewController animated:YES];
I suggest you use code like below :
- (void)configureNavigationBarButtonItem
{
UIButton *cancel = [UIButton buttonWithType:UIButtonTypeCustom];
[cancel setFrame:CGRectMake(0, 0, 50, 50)];
[cancel setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[cancel.titleLabel setFont:[UIFont fontWithName:#"Verdana" size:13.0f]];
cancel.contentHorizontalAlignment=UIControlContentHorizontalAlignmentLeft;
[cancel addTarget:self action:#selector(goBack:) forControlEvents:UIControlEventTouchUpInside];
cancel.tag=3200;
imgBack = [[UIImageView alloc]initWithFrame:CGRectMake(5, 15, 18, 18)];
imgBack.image = [UIImage imageNamed:#"back_black"];
[cancel addSubview:imgBack];
UIBarButtonItem *cancelBtn = [[UIBarButtonItem alloc] initWithCustomView:cancel];
self.navigationItem.leftBarButtonItem = cancelBtn;
}
- (void)goBack:(id)sender
{
[self.navigationController popViewControllerAnimated:YES];
}
I know viewcontroller's navigation item's backBarButtonItem gets displayed when another view controller is pushed on stack and this is 2nd viewcontroller from top.
I have viewcontroller A which have following in viewDidLoad
{
[super viewDidLoad];
self.navigationController.navigationBarHidden = NO;
[self.navigationItem setBackBarButtonItem:[UIBarButtonItem itemWithImageNamed:#"ic_header_slide" selectedImage:nil target:nil action:nil]];
}
When I push viewcontroller B, this custom back button is not getting displayed, instead I see default back button which iOS creates.
A extends UITableViewController and B extends UIViewController. I am not setting leftBarButtonItem, leftBarButtonItems, rightBarButtonItem, rightBarButtonItems in any of these navigationItem.
EDIT
I have read about setting leftBarButtonItems. setting leftbarbuttonitems on B works. but I think setting backBarButtonItem on A is correct way of doing that. It is also mentioned in documentation but not working in my case. I want to ask whether there is bug in backBarButtonItem or I have some misunderstanding the way it works and I am not doing it correctly.
To hide the default back button of the navigation bar use,
self.navigationItem.hidesBackButton=TRUE;
Also use the following method to add the custom BarButtons,
- (NSArray*)getLeftNavButtons:(NSString*)image andTarget:(id)target andFrame:(CGRect)frame andSpace:(int)fixedSpace
{
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = frame;
button.clipsToBounds = YES;
[button setBackgroundImage:[UIImage imageNamed:image] forState:UIControlStateNormal];
[button addTarget:target action:#selector(leftNavBtnClicked) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *barButton = [[UIBarButtonItem alloc]initWithCustomView:button];
if(SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(#"7"))
{
UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace
target:nil action:nil];
negativeSpacer.width = fixedSpace;
return #[negativeSpacer,barButton];
}
else{
return #[barButton];
}
return #[barButton];
}
Just override the default
self.navigationItem.hidesBackButton = YES;
UIBarButtonItem *back = [[UIBarButtonItem alloc]init];
back.title = #"Pick Me";
back.image = #"Your image";
[self.navigationItem setLeftBarButtonItem:back];
Set Right Bar Button Item
self.navigationItem.leftBarButtonItem=[[UIBarButtonItem alloc]init];
UIImage *img1=[UIImage imageNamed:#"edit"];
CGRect frameimg1 = CGRectMake(0, 0, img1.size.width, img1.size.height);
UIButton *signOut=[[UIButton alloc]initWithFrame:frameimg1];
[signOut setBackgroundImage:img1 forState:UIControlStateNormal];
[signOut addTarget:self action:#selector(btnEditClicked:)
forControlEvents:UIControlEventTouchUpInside];
// [signOut setShowsTouchWhenHighlighted:YES];
UIBarButtonItem *barButton=[[UIBarButtonItem alloc]initWithCustomView:signOut];
self.navigationItem.rightBarButtonItem=barButton;
Set Left Bar Button Item
UIImage *img11=[UIImage imageNamed:#"home"];
CGRect frameimg11 = CGRectMake(0, 0, img11.size.width, img11.size.height);
UIButton *signOut1=[[UIButton alloc]initWithFrame:frameimg11];
[signOut1 setBackgroundImage:img11 forState:UIControlStateNormal];
[signOut1 addTarget:self action:#selector(showLeftMenuPressed:)
forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *barButton1=[[UIBarButtonItem alloc]initWithCustomView:signOut1];
self.navigationItem.leftBarButtonItem=barButton1;
self.navigationController.navigationBar.barTintColor=ColorNav;
self.navigationController.navigationBar.translucent=FALSE;
Set Navigation Title & Color
self.title = titletext;
[[[self navigationController] navigationBar]setTitleTextAttributes:#{NSForegroundColorAttributeName: textColor}];
I made a category of UINavigationBar as follow:
UINavigationBar (UINavBar_Category)
I want to create custom back button using this.
I can able to set image by following code:
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:[UIImage imageNamed:#"btn_back.png"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
Problem can not able to change title of back button.
My try
- (void)didMoveToSuperview
{
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithTitle:lang(#"btnBack") style:UIBarButtonItemStylePlain target:nil action:nil];
self.topItem.backBarButtonItem=backButton;
}
Help me to solve this!
Thanks in advance
Try this code instead.. Here a button is first created , its title and image is set and then it is set as left bar button item of navigation controller.
UIButton *backBarButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 100, 29)];
[backBarButton setTitle:#" Log Out" forState:UIControlStateNormal];
[backBarButton setImage:[UIImage
imageNamed:#"leftarrow_ipad.png"] forState:UIControlStateNormal];
[backBarButton addTarget:self action:#selector(backAction:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *backBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backBarButton];
self.navigationItem.leftBarButtonItem = backBarButtonItem;
Try this
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
if([self.navigationController.viewControllers objectAtIndex:0] != self)
{
UIButton *backButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 30, 26)];
[backButton setImage:[UIImage imageNamed:#"back.png"] forState:UIControlStateNormal]; // some image
[backButton setShowsTouchWhenHighlighted:TRUE];
[backButton addTarget:self action:#selector(popViewControllerWithAnimation) forControlEvents:UIControlEventTouchDown];
UIBarButtonItem *barBackItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
self.navigationItem.hidesBackButton = TRUE;
self.navigationItem.leftBarButtonItem = barBackItem;
}
}
-(void)popViewControllerWithAnimation
{
[self.navigationController popViewControllerAnimated:YES];
}
I need to set a back arrow by replacing back Text(button)in navigation bar. I can view the back arrow but i don't know how to hide the back Text in navigation item. Here's is my code:
with this am getting warning : : CGImageCreateWithImageProvider: invalid image size: 0 x 0.
(void)viewWillAppear:(BOOL)animated
{
UIImage *backButtonHomeImage = [[UIImage imageNamed:#"back-arrow.png"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 0, 104, 13)];
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:backButtonHomeImage forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
self.navigationItem.leftBarButtonItem = nil;
}
The answer
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
if([self.navigationController.viewControllers objectAtIndex:0] != self)
{
UIButton *backButton = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 26, 26)];
[backButton setImage:[UIImage imageNamed:#"back-arrow.png"] forState:UIControlStateNormal];
[backButton setShowsTouchWhenHighlighted:TRUE];
[backButton addTarget:self action:#selector(popViewControllerWithAnimation) forControlEvents:UIControlEventTouchDown];
UIBarButtonItem *barBackItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
self.navigationItem.hidesBackButton = TRUE;
self.navigationItem.leftBarButtonItem = barBackItem;
}
}
-(void)popViewControllerWithAnimation
{
[self.navigationController popViewControllerAnimated:YES];
}
may it will help.
Try this :
UIImage *backButtonHomeImage = [[UIImage imageNamed:#"back-arrow.png"] resizableImageWithCapInsets:UIEdgeInsetsMake(0, 0, 104, 13)];
Create custom back button and add that button to Navigation controller's back button.
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(0,0,54,32);
UIImage *backButtonImage = [UIImage imageNamed:#"back-arrow.png"];
[button setBackgroundImage:backButtonImage forState:UIControlStateNormal];
[button addTarget:self.navigationController action:#selector(popViewControllerAnimated:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *barButtonItem = [[UIBarButtonItem alloc] initWithCustomView:button];
[self.navigationItem setLeftBarButtonItem:barButtonItem];
Just set blank text to title of navigation bar before pushing to that view Controller as below code.
self.navigationItem.title=#" ";
I hope this would work
self.navigationItem.backBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:#"" style:UIBarButtonItemStylePlain target:nil action:nil] autorelease];
I created button in navigation bar with this code:
UIBarButtonItem *myButtonEn = [[UIBarButtonItem alloc] initWithTitle:#"EN" style:UIBarButtonItemStyleDone target:self action:#selector(buttonEN:)];
My action for this button:
- (void) buttonEN:(id)sender {
NSLog(#"English language");
}
This works fine but I have to change background and button's style (code below).
UIImage *imageEN = [UIImage imageNamed:#"cys_lang_en.png"];
UIButton *buttonImgEN = [UIButton buttonWithType:UIButtonTypeCustom];
buttonImgEN.bounds = CGRectMake( 0, 0, imageEN.size.width, imageEN.size.height );
[buttonImgEN setImage:imageEN forState:UIControlStateNormal];
UIBarButtonItem *myButtonEn = [[UIBarButtonItem alloc] initWithCustomView:buttonImgEN];
This is axactly what I need, but I need to set action
[myButtonEn setTarget:self];
[myButtonEn setAction:#selector(buttonEN:)];
This code is compiled with no errors but button does not respond.
Does anyone know what is wrong?
try this..
- (void)viewDidLoad
{
[super viewDidLoad];
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
[btn setFrame:CGRectMake(0.0f, 0.0f, 25.0f, 40.0f)];
[btn addTarget:self action:#selector(buttonEN:) forControlEvents:UIControlEventTouchUpInside];
[btn setImage:[UIImage imageNamed:#"cys_lang_en.png"] forState:UIControlStateNormal];
UIBarButtonItem *eng_btn = [[UIBarButtonItem alloc] initWithCustomView:btn];
self.navigationItem.rightBarButtonItem = eng_btn;
}
-(void)buttonEN:(id)sender
{
NSLog(#"English language");
}
You are Missing action and target for button
You can set using,
[myButtonEn setTarget:self];
[myButtonEn setAction:#selector(buttonEN:)];
You might want to change apperance of this button.
[[UIBarButtonItem appearance] setBackgroundImage:<doneBackgroundImage>
forState:UIControlStateNormal
style:UIBarButtonItemStyleDone
barMetrics:UIBarMetricsDefault];
You don't need to use custom view for image,
Try to use:
UIBarButtonItem *btn = [[UIBarButtonItem alloc] initWithImage:yourImage style:UIBarButtonItemStylePlain target:target action:#selector(selector)];