Disable/Hide UIBarButtonItem

[StefanL]

Hi,

In my App I use the call function to make a phone call! Apple rejected my app now, because I haven´t hidden or disabled the Call Button if a User has an Ipod Touch...

Fetch the Platform

-(NSString*)getPlatformName {
	size_t size;  
	sysctlbyname("hw.machine", NULL, &size, NULL, 0);  
	char *machine = (char*)malloc(size);  
	sysctlbyname("hw.machine", machine, &size, NULL, 0);  
	NSString *platform = [NSString stringWithCString:machine encoding:NSASCIIStringEncoding];
	free(machine);
	
	return platform;
}

-(void)viewWillAppear:(BOOL)animated {
	
	NSString * platform = [self getPlatformName];
	
	if ([platform isEqualToString:@"i386"]) {
		// do simulator-specific stuff, perhaps enable a more verbose level of logging?
		NSLog(@"i386");
		[callButton.hidden:NO]; 

	}
	else if ([platform isEqualToString:@"iPod2,1"]) {		
		// do iPod-specific stuff, perhaps disable UI that refers to GPS, vibration, etc.
		
		NSLog(@"iPod");
	}
	else if ([platform isEqualToString:@"iPhone2,1"]) {
		// do iPhone 3GS-specific stuff, perhaps compass related?
		NSLog(@"iPhone");
	}
}

- (IBAction)call {
	
	NSLog(@"bin im Call");
	
	
	UIApplication *app = [UIApplication sharedApplication];
	//NSString *dialThis = (@"tel:%@", alertPersonPhone);
	NSString *urlString = [NSString stringWithFormat:@"tel:%@", phone];
	
	NSLog(@"die Telefonnummer: %@", urlString);
	
	NSURL *url = [NSURL URLWithString:urlString];
	[app openURL:url];
	
}

callButton is the name of the BarButtonItem - how can I disable or hide it?

Thanks for your feedback,

Stefan

[seriessix]

This is how I implemented the exact same thing.
Have a call button, but only if it's an iPhone

NSString *deviceType = [UIDevice currentDevice].localizedModel;
	if ([deviceType isEqualToString:@"iPhone"]) {
		//if it's an iPhone, great - add the button to the bar
	}else {
		//if you have something else you would like to put there instead....
	}

[StefanL]

Hi Seriesix,

it is the same - I also want to hide the BarButtonItem when it is Ipod... But I am not sure how to disable/hide the BarButtonItem

callButton.hidden: YES;

callButton.enabled = NO;

is not working...

BR,

Stefan

[seriessix]

I would say, do not add the button in IB. If you add it programmatically, you can just not add it if the device is not of the right type. Enabled and hidden don't work on bar buttons as far as I am aware.

[nobre84]

Suppose you have an IBOutlet for your toolbar, and an IBOutlet for your UIBarButtonItem, you can do it like this on your viewDidLoad:

NSMutableArray *items = [myToolBar.items mutableCopy];
[items removeObject:myButton];
toolBar.items = items;
[items release];

[swarnalata]

Hi,
suppose you have a done button of UIBarButtonItem and u want to hide it and show it programmatically depends upon your requirement.so you have do like following...

To Hide:

Declaration

UIBarButtonItem *donebutton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemD one target:self action:@selector(ondoneButtonPressed)];

self.navigationItem.rightBarButtonItem = donebutton;

for hide:

self.navigationItem.rightBarButtonItem = nil;

To Show:simply call
self.navigationItem.rightBarButtonItem = donebutton;

It will work for UIBarButtonItem , donebutton.hidden=YES will not work.
You can enable/disable by simply writing donebutton.enable=YES/NO.

Do not know about in which iphone environment for u r working but the given code will work for hiding and showing the UIBarButton for requirements in ur program.

swarnalata

[skunkio]

I have the same need and i solved with a simple solution.
In my code i just enable/disable a UIBarButtonItem.
I declared an IBOutlet in my .h file

IBOutlet UIBarButtonItem *my_button;

In IB i linked the button with my previous declaration and within the .m file i do

//to disable
[my_button setEnabled:FALSE];

//to enable
[my_button setEnabled:TRUE];

Seems work fine

Ciao,
saluti

[iphone.savvy]

Originally Posted by skunkio

I have the same need and i solved with a simple solution.
In my code i just enable/disable a UIBarButtonItem.
I declared an IBOutlet in my .h file

IBOutlet UIBarButtonItem *my_button;

In IB i linked the button with my previous declaration and within the .m file i do

//to disable
[my_button setEnabled:FALSE];

//to enable
[my_button setEnabled:TRUE];

Seems work fine

Ciao,
saluti

What about to hide? how we can hide UIBarButtonItem?

Any idea ?