I change the UIBarButtonItem title at run time but it does not work
if(self.toolbarItems!=nil)
{
NSArray *toolbaritem=self.toolbarItems;
UIBarButtonItem* tmpeditButton =[toolbaritem objectAtIndex:0];
tmpeditButton.title=#"Done";
NSLog(#"log %#",tmpeditButton.title);
}
Log is always displays the value of NULL. Why and how to fix that?
Use this
UIBarButtonItem *barButton = [[UIBarButtonItem alloc] initWithTitle:#"Done" style:UIBarButtonItemStylePlain target:self action:nil];
Related
I'd like to set some buttons in my navigation toolbar and, for users not be confused of what each button do, I'd like to add title to each button, displayed under it. Is it possible to do this?
Declaration of button:
UIBarButtonItem *changeFiltersButton = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:#selector(refreshButton)] autorelease];
``...
[self setToolbarItems:[NSArray arrayWithObjects: flexible,
changeFiltersButton, flexible, flexible,
refreshFiltersList, flexible, flexible,
more, flexible, nil]];
use images with name like the fallowing example
NSMutableArray *toolBaritems = [[NSMutableArray alloc] init];
[toolBaritems addObject:[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]];
[toolBaritems addObject:[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:#"img.png"] style:UIBarButtonItemStylePlain target:self action:#selector(refresh)]];
[toolBaritems addObject:[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]];
[toolBaritems addObject:[[UIBarButtonItem alloc]initWithImage:[UIImage imageNamed:#"img2.png"] style:UIBarButtonItemStylePlain target:self action:#selector(change)]];
[toolbar setItems:toolBaritems animated:NO];
I have created navigation controller via storyboard interface and I have added 4 buttons programmatically on Navigationbar but I don't know how should I justify it would you please help me!
here is the picture:
here is my code for buttons I know That I used rightBarButtonItems but I don't know what should I write instead!
- (void)viewDidLoad
{
[super viewDidLoad];
UIBarButtonItem *menuButton= [[UIBarButtonItem alloc] initWithTitle:#"Menu" style:UIBarButtonItemStyleDone
target:self action:#selector(menu:)];
UIBarButtonItem *yearButton= [[UIBarButtonItem alloc] initWithTitle:#"Year" style:UIBarButtonItemStyleDone
target:self action:#selector(year:)];
UIBarButtonItem *weekButton= [[UIBarButtonItem alloc] initWithTitle:#"Week" style:UIBarButtonItemStyleDone
target:self action:#selector(week:)];
UIBarButtonItem *reportButton= [[UIBarButtonItem alloc] initWithTitle:#"Report" style:UIBarButtonItemStyleDone
target:self action:#selector(report:)];
NSArray *buttons = [NSArray arrayWithObjects:menuButton,yearButton,weekButton,reportButton,nil];
self.navigationItem.rightBarButtonItems = buttons;
}
Add flexible spacers between each of the buttons:
UIBarButtonItem *flexibleSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
I want to show next previous buttons above the keyboard. I call function "makeToolBars" from viewDidLoad to create it. The application does display the buttons correctly but when I click on them I get error it does not go to "goToNextField" function.
Can anyone point how to correct it ?
-(void)goToNextField:(id)sender
{
[txtPassword resignFirstResponder];
[txtUserName becomeFirstResponder];
}
-(void) makeToolBars
{
UIToolbar *toolbar1 = [[[UIToolbar alloc] init] autorelease];
[toolbar1 setBarStyle:UIBarStyleBlackTranslucent];
[toolbar1 sizeToFit];
UIBarButtonItem *nextButton = [[UIBarButtonItem alloc]
initWithTitle:#"Next"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(goToNextField)];
UIBarButtonItem *flexButton1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
NSArray *itemsArray1 = [NSArray arrayWithObjects: nextButton,flexButton1, nil];
[flexButton1 release];
[nextButton release];
[toolbar1 setItems:itemsArray1];
[txtUserName setInputAccessoryView:toolbar1];
}
The below statement is wrong.
UIBarButtonItem *nextButton = [[UIBarButtonItem alloc]
initWithTitle:#"Next"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(goToNextField)];
use the below modified correct code .
UIBarButtonItem *nextButton = [[UIBarButtonItem alloc]
initWithTitle:#"Next"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(goToNextField:)];
Because you might forget to append colon in goToNextField (Correct goToNextField:).
And in your function implementation for goToNextField you were considering the colon and put :(id) sender in your function.
You've written action:#selector(goToNextField)];. It should be action:#selector(goToNextField:)];
I want set my custom method "Home" with RightNavagation button how should I?
My code
UIBarButtonItem *barButton = [[UIBarButtonItem alloc] initWithTitle:#"DontWorryAboutThis" style:UIBarButtonItemStylePlain target:self action:#selector(home:)];
[barButton setImage:[UIImage imageNamed:#"home_btn.png"]];
[self.navigationItem setRightBarButtonItem:barButton];
Know I want to link this method with it.
-(IBAction)home{
MainViewController *main=[[MainViewController alloc]
initWithNibName:#"MainViewController" bundle:nil];
[self.navigationController pushViewController:main animated:YES];
}
how should I Do this please help me out.
Try to change
UIBarButtonItem *barButton = [[UIBarButtonItem alloc] initWithTitle:#"DontWorryAboutThis" style:UIBarButtonItemStylePlain target:self action:#selector(home:)];
in
UIBarButtonItem *barButton = [[UIBarButtonItem alloc] initWithTitle:#"DontWorryAboutThis" style:UIBarButtonItemStylePlain target:self action:#selector(home)];
compare your selector #selector(home:) with your action -(IBAction)home
See the missing colon in your action?
Change your action to
- (IBAction)home:(id)sender
UIBarButtonItem *backButton = [[UIBarButtonItem alloc]
initWithImage:#"rGoBack"
style:UIBarButtonItemStylePlain
target:nil action:nil];
self.navigationItem.backBarButtonItem = backButton;
[backButton release];
I use this source. but It doesn't work. I don't know why not. please..
From the first glance:
initWithImage:#"rGoBack"
here UIImage parameter required and NSString is passed instead. Try writing something like:
initWithImage:[UIImage imageNamed:#"rGoBack.png"]; // or whatever image name you have