I have added a UILabel to my view programmatically like this:
myLabel = [[UILabel alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 100.0f, 30.0f)];
myLabel.center = CGPointMake(160.0f, 120.0f);
myLabel.backgroundColor = [UIColor clearColor];
myLabel.textColor = [UIColor whiteColor];
myLabel.font = [UIFont fontWithName:#"Helvetica" size: 18.0];
myLabel.textAlignment = UITextAlignmentCenter;
myLabel.text = #"Hello";
[self.myView addSubview:myLabel];
To add a label to my view. What I can't seem to find out is once I'm done w/ the label (at a future point) how can I delete it from the view? [myLabel release] doesn't seem to work which I think makes sense because the view it's added to probably retained it's over reference. So what is the best practice?
[myLabel removeFromSuperview];
Related
I have a title label in the navbar using the code below. I can't seem to get it to size to the width of the full view. Any idea how I might go about fixing this?
I thought self.view.bounds.size.width would size it to the full width of the view.
here's my navbar title label code and there's also a screenshot to visually show the problem.
thanks for the help
UILabel* tlabel=[[UILabel alloc] initWithFrame:CGRectMake(0,0, self.view.bounds.size.width, 48)];
tlabel.text=self.navigationItem.title;
tlabel.text = #"someText";
tlabel.font = [UIFont fontWithName:#"DIN-Bold" size:20];
tlabel.textColor=[UIColor whiteColor];
tlabel.backgroundColor = [UIColor colorWithRed:(219/255.0) green:(52/255.0) blue:(31/255.0) alpha:1] ;
tlabel.adjustsFontSizeToFitWidth=YES;
tlabel.textAlignment = UITextAlignmentCenter;
self.navigationItem.titleView=tlabel;
after code change from Paras Joshi it's correct on the right side but off on the left.
Use this bellow code in which I've added UILabel in UIView and then set that view as a titleView...
UIView *headerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 48)];
UILabel* tlabel=[[UILabel alloc] initWithFrame:CGRectMake(0,0, 320, 48)];
tlabel.text=self.navigationItem.title;
tlabel.text = #"someText";
tlabel.font = [UIFont fontWithName:#"DIN-Bold" size:20];
tlabel.textColor=[UIColor whiteColor];
tlabel.backgroundColor = [UIColor colorWithRed:(219/255.0) green:(52/255.0) blue:(31/255.0) alpha:1] ;
tlabel.textAlignment = UITextAlignmentCenter;
[headerView addSubview:tlabel];
self.navigationItem.titleView = headerView;
or add as a subview like below.
[self.navigationController.navigationBar addSubview:tlabel];
Try it with:
UILabel* tlabel=[[UILabel alloc] initWithFrame:CGRectMake(0,0, [UIScreen mainscreen].bounds.size.width, 48)];
May be it works.
you have imported uikit framework or not.import it to make it error free
I want to use UILabel in ContainerView.
So I am using this code for that.
UILabel *myLabel = [[[UILabel alloc] initWithFrame:CGRectMake(16, 60, 300, 150)] autorelease];
myLabel.numberOfLines = 0;
myLabel.font = [UIFont systemFontOfSize:13.5];
myLabel.text = [theQuiz objectAtIndex:row+3] ;
myLabel.lineBreakMode = UILineBreakModeWordWrap;
myLabel.backgroundColor = [UIColor clearColor];
myLabel.layer.cornerRadius = 8.0;
[myLabel sizeToFit];
[self.view addSubview:myLabel];
//ContainerView
UIView *ChallengeView = [[UIView alloc] initWithFrame:CGRectMake(8, 55, 300, 10 + Challenge.frame.size.height)];
ChallengeView.layer.borderColor = [[UIColor purpleColor ] CGColor];
[ChallengeView setBackgroundColor:[UIColor whiteColor]];
ChallengeView.layer.cornerRadius = 8 ;
ChallengeView.layer.borderWidth = 1.5;
[self.view addSubview:ChallengeView];
[ChallengeView release];
Now problem is that when i set background color for ContainerView it hides the text of myLabel
Any Solution ??
What is happening is that you containerView is being added above label either you add label after containerView or do this:
[self.view bringSubviewToFront:myLabel];
You add the ChallengeView first , Then add the myLabel.
Otherwise u can do as like #xs2bush said,
[self.view bringSubviewToFront:myLabel];
Bcz the ChallengeView hides the label.
I have created an AddressBook kind of application where I display a list of people in a UITableView, when a person is selected an ABUnknownPersonViewController is pushed. From this ABUnknownPersonViewController the user is able (by using the built in functionality) to either add the person to a "New Contact" or "Existing Contact".
This is where my problem is located. I am using a Custom UILabel for the NavigationBar title throughout my application. And I need to be able to do this for the views that are pushed by "Add New Contact" / "Add to Existing Contact" as well.
I solved this for the "Add New Contact" by creating a category for ABNewPersonViewController, but the same approach doesn't work for the "Add to Existing Contact". I guess this might be due to the fact that is it an ABPersonPickerNavigationController that is pushed.
#implementation ABPeoplePickerNavigationController (customTitle)
-(void)viewDidLoad {
[super viewDidLoad];
self.navigationBar.tintColor = [UIColor colorWithRed:102/255.0 green:102/255.0 blue:102/255.0 alpha:1];
}
The change of color for the NavigationBar's tintColor works fine, but I cant find a proper way to access the title. Help that include a working example where you are able to change the title in a ABPeoplePickerNavigationController that is pushed from a ABUnknownPersonViewController would be much appriciated.
This is how the category for ABNewPersonViewController (that works) looks like:
#implementation ABNewPersonViewController (customTitle)
-(void)viewDidLoad {
[super viewDidLoad];
self.navigationController.navigationBar.tintColor = [UIColor colorWithRed:102/255.0 green:102/255.0 blue:102/255.0 alpha:1];
}
-(void)setTitle:(NSString *)theTitle {
CGRect frame = CGRectMake(0, 0, 45, 45);
UILabel *label = [[[UILabel alloc] initWithFrame:frame] autorelease];
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont systemFontOfSize:20.0];
label.shadowColor = [UIColor colorWithWhite:255.0 alpha:1];
label.shadowOffset = CGSizeMake(1, 1);
label.textAlignment = UITextAlignmentCenter;
label.textColor = [UIColor colorWithRed:23/255.0 green:23/255.0 blue:23/255.0 alpha:1];
self.navigationItem.titleView = label;
label.text = theTitle;
[label sizeToFit];
}
#end
I use custom labels for this purpose. You can also change font size with this code.
Example:
UILabel * label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, 320 / 11)];
label.font = 16.0;
label.textColor = [UIColor blackColor];
label.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];
label.backgroundColor = [UIColor clearColor];
label.textAlignment = UITextAlignmentCenter;
label.text = #"Your title";
self.navigationItem.titleView = label;
[label release];
Hope this helps.
I'm using UINavigationItem's titleView property to set a custom UILabel with my desired font size/color. Here's my code:
self.headerLabel = [[UILabel alloc] initWithFrame:CGRectMake(0.0, 0.0, 400.0, 44.0)];
self.headerLabel.textAlignment = UITextAlignmentCenter;
self.headerLabel.backgroundColor = [UIColor clearColor];
self.headerLabel.font = [UIFont boldSystemFontOfSize:20.0];
self.headerLabel.textColor = [UIColor colorWithRed:0.259 green:0.280 blue:0.312 alpha:1.0];
self.navigationItem.titleView = self.headerLabel;
In the navigation bar I also have a left bar button. The result is: the text isn't properly centered. I've tried setting the x origin of the label, but this has no effect.
In stead of initWithFrame just use init and put [self.headerLabel sizeToFit] after your last line of code.
If you make the headerLabel a subview of the titleView, you can then set headerLabel's frame to control where it goes within the titleView.
The way you are doing it now, you don't have that control. I think the OS chooses the titleView's frame for you based on the space available.
Hope this helps!
I've used custom title labels for my nav bars in every app I have in the app store. I've tested many different ways of doing so and by far the easiest way to use a custom label in a navigation bar is to completely ignore titleView and insert your label directly into navigationController.view.
With this approach, it's easy to have the title label's frame always match the navigationBar's frame -- even if you are using a custom navBar with a non-standard size.
- (void)viewDidLoad {
[self.navigationController.view addSubview:self.titleLabel];
[super viewDidLoad];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:
(UIInterfaceOrientation)interfaceOrientation {
return YES;
}
- (void)didRotateFromInterfaceOrientation:
(UIInterfaceOrientation)fromInterfaceOrientation {
[self frameTitleLabel];
}
- (UILabel *) titleLabel {
if (!titleLabel) {
titleLabel = [[UILabel alloc]
initWithFrame:self.navigationController.navigationBar.frame];
titleLabel.font = [UIFont fontWithName:#"Helvetica-Bold" size:18];
titleLabel.text = NSLocalizedString(#"Custom Title", nil);
titleLabel.textAlignment = UITextAlignmentCenter;
titleLabel.lineBreakMode = UILineBreakModeTailTruncation;
}
return titleLabel;
}
- (void) frameTitleLabel {
self.titleLabel.frame = self.navigationController.navigationBar.frame;
}
The one caveat to this approach is that your title can flow over the top of any buttons you have in the navBar if you aren't careful and set the title to be too long. But, IMO, that is a lot less problematical to deal with than 1) The title not centering correctly when you have a rightBarButton or 2) The title not appearing if you have a leftBarButton.
I have a same problem; I just somehow solved this issue by calculating the title length and set the label frame width accordingly. Although this is not a perfect one but can be manageable. Here is the code.
label = [[UILabel alloc] init];
label.backgroundColor = [UIColor clearColor];
label.font = [ UIFont fontWithName: #"XXII DIRTY-ARMY" size: 32.0 ];
label.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.0f];
label.textAlignment = UITextAlignmentCenter;
label.textColor =[UIColor orangeColor];
//label.text=categoryTitle;
CGFloat verticalOffset = 2;
NSString *reqSysVer = #"5.0";
NSString *currSysVer = [[UIDevice currentDevice] systemVersion];
if ([currSysVer compare:reqSysVer options:NSNumericSearch] != NSOrderedAscending)
{
if (categoryTitle.length > 8)
{
label.frame = CGRectMake(0, 0, 300, 44);
}else {
label.frame = CGRectMake(0, 0, 80, 44);
}
self.navigationItem.titleView = label;
self.navigationItem.title=label.text;
[[UINavigationBar appearance] setTitleVerticalPositionAdjustment:verticalOffset forBarMetrics:UIBarMetricsDefault];
[[UIBarButtonItem appearance] setTintColor:[UIColor newBrownLight]];
}
Just calculate exact frame size needed and align to left:
UIFont* font = [UIFont fontWithName:#"Bitsumishi" size:20];
CGSize maximumLabelSize = CGSizeMake(296,9999);
CGSize expectedLabelSize = [title sizeWithFont:font constrainedToSize:maximumLabelSize lineBreakMode:UILineBreakModeCharacterWrap];
CGRect frame = CGRectMake(0, 0, expectedLabelSize.width, expectedLabelSize.height);
UILabel *label = [[[UILabel alloc] initWithFrame:frame] autorelease];
label.font = font;
label.textAlignment = UITextAlignmentLeft;
label.text = title;
self.titleView = label;
UIView *vw = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 40)];
UILabel *lbl = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, 40)];
lbl.text = #"Home";
lbl.textAlignment = UITextAlignmentCenter;
lbl.backgroundColor = [UIColor clearColor];
lbl.textColor = [UIColor whiteColor];
lbl.font = [UIFont fontWithName:#"HelveticaNeue-Bold" size:20];
lbl.shadowColor = [UIColor blackColor];
lbl.shadowOffset = CGSizeMake(0,1);
self.navigationItem.titleView = vw;
[self.navigationItem.titleView addSubview:lbl];
What worked for me was to update the titleView frame in the viewDidAppear method.
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
UIView *titleView = self.navigationItem.titleView;
CGRect navBarFrame = self.navigationController.navigationBar.frame;
[titleView setFrame:CGRectMake((CGRectGetWidth(navBarFrame) - TitleWidth) / 2, (CGRectGetHeight(navBarFrame) - TitleHeight) / 2, TitleWidth, TitleHeight)];
}
I have a simple navigation based application for the iphone/objective-c
within various UIViewControllers that are pushed into view, I can set the text in the title bar using something like
self.title = #"blah blah blah"
Is there a way to control the font and font-size of the title in the title bar text?
thanks!
the proper way to resize the title text of a navcontroller is to set the titleView property of the navigationItem
like this (in viewDidLoad)
UILabel* tlabel=[[UILabel alloc] initWithFrame:CGRectMake(0,0, 300, 40)];
tlabel.text=self.navigationItem.title;
tlabel.textColor=[UIColor whiteColor];
tlabel.backgroundColor =[UIColor clearColor];
tlabel.adjustsFontSizeToFitWidth=YES;
self.navigationItem.titleView=tlabel;
You may want to emboss the label so it doesn't look fuzzy and flat:
- (void)viewDidLoad
{
[super viewDidLoad];
CGRect frame = CGRectMake(0, 0, 400, 44);
UILabel *label = [[[UILabel alloc] initWithFrame:frame] autorelease];
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont boldSystemFontOfSize:18.0];
label.textAlignment = UITextAlignmentCenter;
label.textColor = [UIColor whiteColor];
label.text = self.navigationItem.title;
// emboss so that the label looks OK
[label setShadowColor:[UIColor darkGrayColor]];
[label setShadowOffset:CGSizeMake(0, -0.5)];
self.navigationItem.titleView = label;
}
IF you want this to work both on iphone and ipad, and also want to get the title centered then use the following code.
- (void)viewDidLoad
{
[super viewDidLoad];
UILabel* label=[[UILabel alloc] initWithFrame:CGRectMake(0,0, self.navigationItem.titleView.frame.size.width, 40)];
label.text=self.navigationItem.title;
label.textColor=[UIColor whiteColor];
label.backgroundColor =[UIColor clearColor];
label.adjustsFontSizeToFitWidth=YES;
label.font = [AppHelper titleFont];
label.textAlignment = NSTextAlignmentCenter;
self.navigationItem.titleView=label;
}
You can assign any UIView to a navcontroller's title area.
Create a UILabel and set its font and size anyway you want, then assign it to the UIViewController's navigationItem.titleView property. Make sure the UILabel's backgroundColor is set to clearColor.
This only works on the top-level nav-view. As the user drills down into the view controller hierarchy and the "back" button is shown the alternate titleView is ignored and the regular text label is shown.