I have a UIViewController which is created programmatically. I include the following code in loadView. The toolbar is shown, but not the button I added. Any help would be appreciated please.
[self.navigationController setToolbarHidden:NO animated:NO];
UIBarButtonItem *actionB = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:#selector(actionBTapped:)];
[self.navigationController.toolbar setItems:[NSArray arrayWithObject:actionB] animated:NO];
[actionB release];
You want to set the items on the UIViewController itself, not its navigation controller:
self.toolbarItems = [NSArray arrayWithObject:actionB];
Try this:
NSMutableArray *items = [[[NSMutableArray alloc] init] autorelease];
UIBarButtonItem *labelButton = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:nil action:nil] autorelease];
[items addObject:labelButton];
[items addObject:[[[UIBarButtonItem alloc] initWithTitle:#"YoutTitle" style:UIBarButtonItemStyleDone target:self action:#selector(actionBTapped:)] autorelease]];
[self.navigationController.toolbar setItems:items animated:NO];
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 a memory leak that I do not understand. I am switching views with a segmentcontrol like this:
- (void)didChangeSegmentControl:(UISegmentedControl *)control {
if (self.activeViewController) {
[self.activeViewController viewWillDisappear:NO];
[self.activeViewController.view removeFromSuperview];
[self.activeViewController viewDidDisappear:NO];
}
self.activeViewController = [self.segmentedViewControllers objectAtIndex:control.selectedSegmentIndex];
[self.activeViewController viewWillAppear:NO];
[self.containerView addSubview:self.activeViewController.view];//Here is the memory leak
[self.activeViewController viewDidAppear:NO];
[self BuildBottomBarButtons];
}
I leak appears in Instruments and I do not have any idea why...
Thanks!!!
Edit:
The "BuildBottomBarButtons":
-(void) BuildBottomBarButtons{
//create toolbar using new
UIToolbar *toolbar = [UIToolbar new];
toolbar.barStyle = UIBarStyleBlackTranslucent;
[toolbar sizeToFit];
toolbar.frame = CGRectMake(0, 330, 320, 50);
//Add buttons
UIBarButtonItem *systemItem1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:#selector(shareClicked)];
UIBarButtonItem *systemItem2 = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:#"scroll left.PNG"] style:UIBarButtonItemStylePlain target:self action:#selector(upClicked)];
UIBarButtonItem *systemItem3 = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:#"scroll right.PNG"] style:UIBarButtonItemStylePlain target:self action:#selector(downClicked)];
//Use this to put space in between your toolbox buttons
UIBarButtonItem *fixItem50 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
UIBarButtonItem *fixItem70 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
fixItem50.width = 50;
fixItem70.width = 64;
//Add buttons to the array
NSArray *items = [NSArray arrayWithObjects: systemItem1, fixItem70, systemItem2, fixItem50,systemItem3, nil];
//release buttons
[systemItem1 release];
[systemItem2 release];
[systemItem3 release];
[fixItem70 release];
[fixItem50 release];
//add array of buttons to toolbar
[toolbar setItems:items animated:NO];
[self.containerView addSubview:toolbar];
[toolbar release];
}
And the "self.segmentedViewControllers" init method is:
- (NSMutableArray *)segmentedViewControllerContent {
JobGeneralDetailsController * controller1 = [[JobGeneralDetailsController alloc] initWithSelectedRowID:selectedRowID andWithJobBoardID:jobBoardId andWithJobDetails:jobDetails];
[controller1 setViewType:jobDetailsViewType];
//initWithParentViewController:self];
JobMapDetailsController * controller2 = [[JobMapDetailsController alloc] initWithJobDetails:jobDetails];//[[AustraliaViewController alloc] initWithParentViewController:self];
[controller1 setJobMapDetailsController: controller2];
JobReviewsController *controller3 = [[JobReviewsController alloc] initWithStyle:UITableViewStyleGrouped];
[controller3 setJobDetails:jobDetails];
[controller3 setViewType:jobDetailsViewType];
[controller1 setJobReviewsController: controller3];
NSMutableArray * controllers = [NSMutableArray arrayWithObjects:controller1, controller2, controller3,nil];
[controller1 release];
[controller2 release];
[controller3 release];
return controllers;
}
The only line I could point to is [self BuildBottomBarButtons];
Looking at your code the only problem I can see is in the [self BuildBottomBarButtons]
It looks like you are adding the toolbar to the container view everytime you switch view controllers.
What type of object does Instruments say is leaking, is it possible to see a screen shot of your instruments screen showing the leaked objects?
I know how to add a UISegmentedControl to a UIToolBar from within IB, but I am trying to do the same programmatically, because I am using a custom subclass of UISegmentedControl with doesn't have an XIB.
This is the code for the UISegmentedControl:
SVSegmentedControl *navSC = [[SVSegmentedControl alloc] initWithSectionTitles:[NSArray arrayWithObjects:#"List", #"Calendar", nil]];
navSC.delegate = self;
[self.view addSubview:navSC];
[navSC release];
navSC.center = CGPointMake(160, 70);
I was thinking of doing something like [self.toolbar addSubview:navSC], but that didn't show anything.
You need to use the UIToolbar method – setItems:animated: (detailed in the documentation):
UIBarButtonItem *segItem = [[UIBarButtonItem alloc] initWithCustomView:navSC];
UIBarButtonItem *spaceItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:NULL];
[toolBar setItems:[NSArray arrayWithObjects:spaceItem,segItem,spaceItem,nil] animated:YES];
[segItem release];
[spaceItem release];
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:)];
This doesn't seem to be working. What am i doing wrong?
-(void)awakeFromNib{
UIBarButtonItem *rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:#selector(showNewEventViewController)];
self.navigationItem.rightBarButtonItem = rightBarButtonItem;
NSLog(#"awaked");
[rightBarButtonItem release];
}
my guess is, that you add the UIBarButtonItem to the wrong object!
you need to add it, to the rootViewController (instead to the UINavigationController, as you probably did)
YourRootViewController *theRootController = [[YourRootViewController alloc] init];
UINavigationController* navContainer = [[UINavigationController alloc] initWithRootViewController:theRootController];
UIBarButtonItem *btnCancel = [[UIBarButtonItem alloc] initWithTitle:#"Cancel" style:UIBarButtonItemStyleBordered target:self action:#selector(dismiss)];
theRootController.navigationItem.rightBarButtonItem = btnCancel
[navContainer setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];
[self presentModalViewController:navContainer animated:YES];
I would normally put this code in the viewDidLoad method rather than the awakeFromNib method; I'm not sure if that's where your problem lies. What does "not working" mean?
Try this instead:
- (void) initUI {
UIBarButtonItem *btnCancel = [[[UIBarButtonItem alloc] initWithTitle:#"Cancel"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(dismiss)]autorelease];
self.navigationItem.rightBarButtonItem = btnCancel;
//[btnCancel release]; no need to explicitly release the item
}