how to find length of the navigation bar....
i want to display a label centre of the navigation bar programmatically..
so that i can write formula ,so it should work if i rotate my device ...
Use the following code snippet in the viewDidLoad method of UIViewController.
UILabel *label = [[UILabel alloc] init];
label.text = #"Center Label";
label.frame = CGRectMake(0, 0, 100, 30);
label.textAlignment = NSTextAlignmentCenter;
UIBarButtonItem *customButton = [[UIBarButtonItem alloc] initWithCustomView:label];
self.navigationItem.titleView = customButton.customView;
Code is self explanatory. Customize the label and other necessary stuff as required.
Related
I need to align the navigationItem TitleView to the far right. (where the navigationItem rightBarButtonItem normally appears)
How can this be done ?
I have tried this but with no luck it still places TitleView in the center:
CGRect titleViewPos = CGRectMake(300, 0, 200, 10);
self.navigationItem.titleView.frame = titleViewPos;
UILabel *lbl = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 320, 44)];
lbl.textAlignment = UITextAlignmentRight;
lbl.backgroundColor = [UIColor clearColor];
lbl.text = #"TITLEVIEW";
self.navigationItem.titleView = lbl;
You will get output as
Just an idea:
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(300, 0, 200, 10);
[btn setTitle:#"titleView" forState:UIControlStateNormal];
self.navigationItem.titleView = btn;
You need to pass a UIElement (UIView,UILabel) to navigation item then you can set the position and make other customisation with navigation title or left button or right button.
May this will help you.
try this one, May be use-full
UILabel *lbNavTitle = [[UILabel alloc] initWithFrame:CGRectMake(0,40,320,40)];
lbNavTitle.textAlignment = NSTextAlignmentRight;
lbNavTitle.backgroundColor = [UIColor clearColor];
lbNavTitle.text = #"hello World";
self.navigationItem.titleView = lbNavTitle;
The titleview frame is automatically adjusted, if you want to obtain this result you can try this:
UILabel *titleLabel = [[UILabel alloc] initWithFrame:self.navigationController.navigationBar.frame];
[titleLabel setTextAlignment:UITextAlignmentRight];
[titleLabel setText:#"Your title"];
[titleLabel setBackgroundColor:[UIColor clearColor]];
[titleLabel setTextColor:[UIColor whiteColor]];
self.navigationItem.titleView = titleLabel;
NOTE: be sure to don't set self.title of your view controller otherwise you will overwrite the titleView
Another solution could be put the titleLabel into an UIBarButtonItem (customView) and set it like to self.navigationItem.rightBarButtonItem in this way you don't need to set the text alignement ad the frame of the label can be the proper text size
none of that worked for me. I took Desdanova's advice and just added as a subview. Makes sense because that's all it is! Initialize it with any frame position you want and then
[self.view addSubView:lbl];
and Voila!
I have a subview that shows once a button is pushed and it shows up fine. I have the subview showing a label along with it. I am just lost on how to change the background color of it and give it some transparency by adjusting it's alpha and setting the label's text color to something else. I know this is just like three to four lines of simple code but I'm at a lost now.
Here is my code:
- (IBAction)showInfo:(id)sender
{
UIView *mySubview = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 200, 200)];
[self.view addSubview:mySubview];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 300, 50)];
label.text = #"This is a label";
[self.view addSubview:label];
}
It all runs fine, I'm just missing some pieces
Try out this code:
mySubview.backgroundColor = [UIColor colorWithRed:.5 green:.6 blue:.7 alpha.8]; // for example
label.textColor = [UIColor redColor];
Hope this help you.
In my ViewDidLoad I try something like that but its not working:
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10,2,60,14)];
label.autoresizingMask = UIViewAutoresisingFlecibleWidth;
[self.navigationController.navigationBar addSubview:label];
I want to display a label in the left part of my NavigationBar.
Or maybe change the navigationBar.title position
Thanks,
You can do set navigation item's title view to UILabel with left text alignment:
UILabel* lbNavTitle = [[UILabel alloc] initWithFrame:CGRectMake(0,40,320,40)];
lbNavTitle.textAlignment = UITextAlignmentLeft;
lbNavTitle.text = NSLocalizedString(#"Hello World!",#"");
self.navigationItem.titleView = lbNavTitle;
[lbNavTitle release];
Created this way item's title also tolerates buttons on navigation bar and does not overlap them.
i want change title's color of navigation controller but i dont know why doesn't work !
UILabel *label = [[[UILabel alloc] init] autorelease];
label.textColor = [UIColor yellowColor];
self.navigationItem.titleView = label;
i figured out my problem :
CGRect frame = CGRectMake(0, 0, 310, 44);
UILabel *label = [[[UILabel alloc] initWithFrame:frame] autorelease];
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont systemFontOfSize:25];
label.textAlignment = UITextAlignmentCenter;
label.textColor = [UIColor brownColor];
self.navigationItem.titleView = label;
label.text = NSLocalizedString(#"YOUR TEXT", #"");
now how can add a logo on my navigation bar ? :D
When you assign the UILabel your not giving it a size so its ending up with a frame of 0x0 - by adding [label sizeToFit]; after you've added the text you'll get what you want.
Or you can set the size of the label when you create it with initWithFrame:(CGRect)frame
Do you want to change the color of the whole navigation bar or just the UILabel in the middle of it? Assuming you want to recolor the whole bar, you can do it in Interface Builder by setting the tint color, or you can use navigationController.navigationBar.tintColor = UIColor(...)
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.