I have a text that is shown in a UILabel. However, this text have several line spaces as shown below. Now, I want to calculate the height of this label, considering the newline, Bold-text and font size. Since this text can not be placed in a Single line in the label, there might be several lines that we must determine at runtime. Based on this height I want to increase the y cordinate of my UILabel so the UILabel will always be stuck to the bottom of the screen. (Only the height will increase (upwards))
How can I solve this?
NSAttributedString *linespace = [[NSAttributedString alloc] initWithString: #"\n"];
NSMutableAttributedString *mutableString = [[NSMutableAttributedString alloc]initWithString:#"Mathews is a " attributes:#{NSFontAttributeName : [UIFont fontWithName:#"HelveticaNeue-Bold" size:40]}];
NSAttributedString* attributed = [[NSAttributedString alloc]initWithString:[NSString stringWithFormat:#"%#", #"Bad guy"] attributes:#{NSFontAttributeName : [UIFont fontWithName:#"HelveticaNeue-Bold" size:40]}];
[mutableString appendAttributedString: linespace];
[mutableString appendAttributedString: attributed];
[mutableString appendAttributedString: linespace];
You can get height by
CGRect rectCountry = [mutableString boundingRectWithSize:(CGSize){#“YOUR WIDTH”, CGFLOAT_MAX}
options:NSStringDrawingUsesLineFragmentOrigin
context:nil];
CGSize sizeCountry = rectCountry.size;
Related
The dots are added automatically by the UILabel, cause of line limitation, but they get the background color of hidden truncated text:
So I have UILabel with line limit of 10 and line break mode of TruncatingTail.
I also have 2 types of attributed strings that build this UILabel content.
NSForegroundColorAttributeName, NSFontAttributeName
NSBackgroundColorAttributeName, NSForegroundColorAttributeName, NSFontAttributeName
Any idea why the UILabel is adding background color to the dots? There is text in line 12 (which is truncated) that have that background...
=Here Given Code Try it..
NSMutableAttributedString *text = [[NSMutableAttributedString alloc] initWithString:#"test"];
NSMutableParagraphStyle *style = [[NSMutableParagraphStyle alloc] init];
style.lineBreakMode = NSLineBreakByTruncatingTail;
[text addAttribute:NSParagraphStyleAttributeName
value:style
range:NSMakeRange(0, text.length)];
label.attributedText = text;
It looks like your NSAttributedString styling is picking up on an instance of "Windsor" that is past the truncation point.
You could find where the truncation occurs, and then only apply the text attribute to the range of the string up to the truncation point.
See this SO answer to calculate this range.
NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
paragraph.lineBreakMode = mylabel.lineBreakMode;
NSDictionary *attributes = #{NSFontAttributeName : mylabel.font,
NSParagraphStyleAttributeName : paragraph};
CGSize constrainedSize = CGSizeMake(mylabel.bounds.size.width, NSIntegerMax);
CGRect rect = [mylabel.text boundingRectWithSize:constrainedSize
options:(NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading)
attributes:attributes context:nil];
if (rect.size.height > mylabel.bounds.size.height) {
NSLog(#"TOO MUCH");
}
I have a UILabel which uses an Attributed String. I want to have its line height to be exactly the size of the font size, not a pixel bigger. However, a top and bottom padding are being added. See image below:
This is my code to create the label.
NSDictionary *basicAttributes = #{NSForegroundColorAttributeName: [UIColor whiteColor], NSBackgroundColorAttributeName: [UIColor blueColor]};
NSMutableDictionary *attributes = [NSMutableDictionary dictionaryWithDictionary:basicAttributes];
UIFont *font = [UIFont fontWithName:#"AvenirNext-Regular" size:20.0];
[attributes setObject:font forKey:NSFontAttributeName];
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
paragraphStyle.lineHeightMultiple = 1.0f;
[attributes setObject:paragraphStyle forKey:NSParagraphStyleAttributeName];
self.helloWorldLabel.attributedText = [[NSMutableAttributedString alloc] initWithString:#"Hola" attributes:attributes];
Attempts
I have tried to call sizeToFit after setting the attributedText without success.
[self.helloWorldLabel sizeToFit];
I have played with other attributes of NSMutableParagraphStyle such as lineSpacing without success.
paragraphStyle.lineSpacing = 0.0f;
What am I missing?
Thanks in advanced
It sounds like you want to use boundingRectWithSize: Here's a short example of how to use it. This code will dynamically determine your label size based on the text in your label. Setting the constraining sizes allows a max size if content needs to overflow to multiple lines.
NSString *text = [NSString stringWithFormat:#"Title Header:%#", value];
NSRange boldRange = [text rangeOfString:#"Title Header:"];
NSRange normalRange = [text rangeOfString:value];
NSMutableAttributedString *attributedText = [[NSMutableAttributedString alloc] initWithString:text];
//Add attributes for appropriate ranges
[attributedText setAttributes:#{ NSFontAttributeName:[UIFont fontWithName:#"HelveticaNeue-Bold" size:13.0f]} range:boldRange];
[attributedText setAttributes:#{ NSFontAttributeName:[UIFont fontWithName:#"HelveticaNeue" size:13.0f]} range:normalRange];
//Determine rect for attributed text constrained within max values
CGRect textAttributedSize = [attributedText boundingRectWithSize:CGSizeMake(CellTitleWidth, CGFLOAT_MAX) options:NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading context:NULL];
[self.myLabel setText:attributedText];
[self.myLabel setFrame:textAttributedSize];
Check this link. There is no 100% way to correctly set the frame to fit the letters. You can calculate the attributed string with CoreText like using CTFramesetterRef CTFramesetterSuggestFrameSizeWithConstraints but it is more additional work.
In my project I want to add an attributed text in UILabel placed on the xib.
It's working perfectly, but if large text appears it shows some issues.
My current implementation:
- (void)viewDidLoad
{
[super viewDidLoad];
_demoLabel.numberOfLines = 0;
_demoLabel.lineBreakMode = NSLineBreakByWordWrapping;
_demoLabel.attributedText = [self demoNameWithFontSize:21 andColor:[UIColor redColor]];
}
- (NSMutableAttributedString *)demoNameWithFontSize:(CGFloat)fontSize andColor:(UIColor *)color
{
NSMutableAttributedString *attributedText = nil;
NSString *demoName = #"Blah blah blah";
UIFont *demoFont = [UIFont fontWithName:#"Zapfino" size:fontSize];
attributedText = [[NSMutableAttributedString alloc] initWithString:demoName];
NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
paragraph.lineBreakMode = NSLineBreakByWordWrapping;
[attributedText addAttribute:NSParagraphStyleAttributeName value:paragraph range:NSMakeRange(0, [demoName length])];
[attributedText addAttribute:NSFontAttributeName value:demoFont range:NSMakeRange(0, [demoName length])];
[attributedText addAttribute:NSForegroundColorAttributeName value:color range:NSMakeRange(0, [demoName length])];
return attributedText;
}
Output:
Issue:
It is not displaying the whole text, even if I applied the NSMutableParagraphStyle.
How can I solve this ?
Alternative I found:
If I change
UIFont *demoFont = [UIFont fontWithName:#"Zapfino" size:fontSize];
to
UIFont *demoFont = [UIFont systemFontOfSize:fontSize];
It'll work and gives output like:
But the issue is I need to use custom font, can't use default font. Also cannot change the font size.
I checked UILabel class reference and googled, but couldn't find a solution. Please help me.
Is there anyway to span this text into multiple lines ?
You need to resize the UILabel to fit the text.
You can calculate the size with the boundingRectWithSize:options:context: NSAttributedString class method, which takes an attributed string and calculates the size within a set rect based on all the attributes of the string.
I have a UILabel with several lines. The text is set dynamically, and my label height too, with this native method :
[myLabel sizeToFit];
I have an other method that sets the line spacing in my label :
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:#"My long dynamic text"];
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
[paragraphStyle setLineSpacing:5];
[attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [labelText length])];
myLabel.attributedText = attributedString;
The problem is that even if I set the line spacing first, and then call sizeToFit, the new height of my label is to small. It doesn't take in count the line spacing.
It really is a problem as my label is in a UIScrollView and I need the right height.
For getting size of label dynamically based on text length use this method:
/*! Returns the size of the label to display the text provided
#param text
The string to be displayed
#param width
The width required for displaying the string
#param fontName
The font name for the label
#param fontSize
The font size for the label
*/
- (CGSize)getSizeForText:(NSString *)text maxWidth:(CGFloat)width font:(NSString *)fontName fontSize:(float)fontSize {
CGSize constraintSize;
constraintSize.height = MAXFLOAT;
constraintSize.width = width;
NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
[UIFont fontWithName:fontName size:fontSize], NSFontAttributeName,
nil];
CGRect frame = [text boundingRectWithSize:constraintSize
options:NSStringDrawingUsesLineFragmentOrigin
attributes:attributesDictionary
context:nil];
CGSize stringSize = frame.size;
return stringSize;
}
Try using – boundingRectWithSize:options:context: method of the NSMutableAttributedString. Refer the Apple Docs for more info.
I have this string that I want to display in a label:
NSString *criticsScore=[NSString stringWithFormat:#"%#\%%",[dict objectForKey:#"critics_score"]];
_criticRating.text=criticsScore;
I want to set a small font for \%% and a large font for [dict objectForKey:#"critics_score"]];
Is this possible?
You Need to use your own control for drawing an NSAttributedString, like TTTAttributedLabel.
NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:#"Blah1:blah-blah%d. Blah2:-%d%%", [currentCoupon.couponPrice intValue],[currentCoupon.couponDiscountPercent intValue]];
[str addAttribute:NSBackgroundColorAttributeName value:[UIColor clearColor] range:NSMakeRange(0,30)];/// Define Range here and also BackGround color which you want
[str addAttribute:NSForegroundColorAttributeName value:[UIColor blackColor] range:NSMakeRange(0,30)];/// Define Range here and also TextColor color which you want
[str addAttribute:NSFontAttributeName value:[UIFont fontWithName:#"HelveticaNeue-Bold" size:20.0] range:NSMakeRange(20, 10)];
lblWithText.attributedText = str;
Above Code I got From How to use multiple font stylings on a single string inside a label?
Read this post. It is about NSAttributedStrings. I think that is what you need.
You would have to do it with two UILabels. You would set the first label to be all of the text excpt the \%%, and get the size of that label using sizeWithFont: on the text that goes in that label. Then set the second label to start at the end of that label's frame.
So, it would look something like this, changing the coordinates based on where you want the labels:
NSString *criticsScore = [NSString stringWithFormat:#"%#",[dict objectForKey:#"critics_score"]];
NSString *str2 = #"\%%";
UIFont *criticsFont = [UIFont systemFontOfSize:[UIFont systemFontSize]];
UIFont *font2 = [UIFont systemFontOfSize:12.0];
//Get the sizes of each text string based on their font sizes.
CGSize criticsSize = [criticsScore sizeWithFont:criticsFont];
CGSize size2 = [str2 sizeWithFont:font2];
int x = 0;
int y = 0;
//The first label will start at whatever x and y are.
UILabel *label1 = [[UILabel alloc] initWithFrame:CGRectMake(x,y,criticsSize.width,criticsSize.height)];
[label1 setFont:criticsFont];
//Create a second label with the x starting at x+criticsSize.width;
//The y will start at y+criticsSize.height-size2.height, so that it will be aligned with the bottom.
//Change these to align it differently.
UILabel *label2 = [[UILabel alloc] initWithFrame:CGRectMake(x+criticsSize.width,y+criticsSize.height-size2.height,size2.width,size2.height)];
[label2 setFont:font2];
[self.view addSubview:label1];
[self.view addSubview:label2];