hi I need to change text to bold in message composer body pls help me , I've tried with attributed text but I couldn't add
NSMutableAttributedString *yourAttributedString = [[NSMutableAttributedString alloc] initWithString:message];
NSString *boldString = #"hey";
NSRange boldRange = [message rangeOfString:boldString];
[yourAttributedString addAttribute: NSFontAttributeName value:[UIFont boldSystemFontOfSize:18] range:boldRange];
UILabel *lbl = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 0, 0)];
lbl.attributedText = yourAttributedString;
MFMessageComposeViewController *messageComposeVC = [[MFMessageComposeViewController alloc] init];
messageComposeVC.messageComposeDelegate = self;
messageComposeVC.recipients = selectedContacts;
messageComposeVC.body = [lbl.attributedText string];
[self presentViewController:messageComposeVC animated:YES completion:nil];
I think it is better if you initiate a attribute to hold all your text attributes ( text size, font , colors ,weight ,styles) and add that when you are initializing the text , in your case "yourAttributedString" . Not sure if there is a specific reason to as why you do this so but try the following .
Use LocalizedStandardRangeofString instead or RangeOfString as you are
displaying this text.Check the "important" section in this documentation https://developer.apple.com/documentation/foundation/nsstring/1416849-rangeofstring?language=objc
//make an attributes dictionary here.
NSDictionary *stringAttributes = #{
NSFontAttributeName:[UIFont boldSystemFontOfSize:20]
};
NSString *message = #" message hey";
NSMutableAttributedString *yourAttributedString =[[NSMutableAttributedString alloc]initWithString:message];
NSString *boldString = #"hey";
NSRange range = [message localizedStandardRangeOfString:boldString];
[yourAttributedString addAttributes:stringAttributes range:range];
self.lbl.attributedText = yourAttributedString;
I'm trying to produce a set of custom page numbers. The current page number will be displayed. The others will simply be open circles.
Using the code below, I'm getting the desired results - except, with the new text attributes in iOS7, I cannot figure out how to center the number.
Any help will be appreciated.
Original iOS6 code:
[pageNumber drawInRect:CGRectMake(x,(self.frame.size.height-_currentPageDiameter)/2-1,_currentPageDiameter,_currentPageDiameter) withFont:[UIFont systemFontOfSize:_currentPageDiameter-2] lineBreakMode:UILineBreakModeCharacterWrap alignment:NSTextAlignmentCenter];
My iOS7 code:
NSString *pageNumber = [NSString stringWithFormat:#"%i", i+1];
CGContextSetFillColorWithColor(myContext, [[UIColor whiteColor] CGColor]);
UIFont* font = [UIFont systemFontOfSize:_currentPageDiameter-2];
NSDictionary *attrs = #{ NSForegroundColorAttributeName : [UIColor whiteColor],
NSFontAttributeName : font,
NSTextEffectAttributeName : NSTextEffectLetterpressStyle};
CGRect r = CGRectMake(x,(self.frame.size.height-_currentPageDiameter)/2-1,_currentPageDiameter,_currentPageDiameter);
[pageNumber drawInRect:r withAttributes:attrs];
The property you're missing for center alignment is defined the following way. I also added the line break mode you had defined on the iOS6 code:
NSMutableParagraphStyle *paragrapStyle = [[NSMutableParagraphStyle alloc] init];
paragrapStyle.alignment = NSTextAlignmentCenter;
paragrapStyle.lineBreakMode = NSLineBreakByCharWrapping;
You just place them in the attributes dictionary under the key:
NSArray *attrs = #{
NSParagraphStyleAttributeName : paragraphStyle,
...
};
I have a message of deprecated method.
The line of code is this one :
[string drawInRect:drawArea withFont:uifont lineBreakMode:linebreaks[lineBreakMode] alignment:alignments[hAlignment]];
So I want to replace it with this code :
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
paragraphStyle.lineBreakMode = NSLineBreakByTruncatingTail;
paragraphStyle.alignment = NSTextAlignmentCenter;
NSDictionary *attributes = #{ NSFontAttributeName: uifont,
NSParagraphStyleAttributeName: paragraphStyle};
[string drawInRect:drawArea withAttributes:attributes];
After this replacement, the warning is not here anymore. But, all my text is invisible. For example, I have a text "Options" which is not visible (but I can still click on it).
Someone can help on this please?
Regard
I have CATextLayer and want to set background color to part of the string. But setting background color to attributed string (NSBackgroundColorAttributeName) doesn't have any effect. Other attributes, such as foreground color, are applied correctly.
NSMutableAttributedString *str = [[[NSMutableAttributedString alloc] initWithString:#"Some Text"] autorelease];
NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:
[NSColor yellowColor], NSForegroundColorAttributeName,
[NSColor redColor], NSBackgroundColorAttributeName, nil];
[str setAttributes:attributes range:NSMakeRange(0, 3)];
textLayer.string = str;
First three symbols are drawn in yellow color, but background won't change. Any ideas?
I think that the CATextLayer class uses the CoreText API for its rendering. The CoreText API are very low-level and only support a subset of the NSAttributedString attributes. Unfortunately, the NSBackgroundColorAttributeName is not one of those. You have to deal with it manually (see this SO entry).
I am trying to get the width of an NSString (ex. NSString *myString = #"hello"). Is there a way to do this?
Thanks.
Here's a relatively simple approach. Just create an NSAttributedString with the appropriate font and ask for its size:
- (CGFloat)widthOfString:(NSString *)string withFont:(NSFont *)font {
NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:font, NSFontAttributeName, nil];
return [[[NSAttributedString alloc] initWithString:string attributes:attributes] size].width;
}
UIFont * font ＝ [UIFont systemFontOfSize:15];
CGSize stringSize = [aString sizeWithFont:font];
CGFloat width = stringSize.width;
Using the UILabel's attributed string:
- (CGSize)getStringSizeWithText:(NSString *)string font:(UIFont *)font{
UILabel *label = [[UILabel alloc] init];
label.text = string;
label.font = font;
return label.attributedText.size;
}
Send the string a sizeWithAttributes: message, passing a dictionary containing the attributes with which you want to measure the string.
i dont know if you are suppose to use this in cocoa touch. if it is, then:
- (CGFloat)widthOfString:(NSString *)string withFont:(NSFont *)font {
NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:font, NSFontAttributeName, nil];
return [[[NSAttributedString alloc] initWithString:string attributes:attributes] size].width;
}
wont work.
in cocoa touch, you gotta add coretext framework and import the header
and write your code like this:
UIFont *font = [UIFont fontWithName:#"HelveticaNeue-BoldItalic" size:DEFAULT_FONT_SIZE];
// NSLog(#"%#", NSFontAttributeName);
NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:font, (NSString *)kCTFontAttributeName, nil];
but, GEE!!!!!
NSMutableAttributedString *as = [[NSMutableAttributedString alloc] initWithString:self.caption attributes:attributes];
[as size].width;
there's no size this method in NSMutableAttributedString!
finally, this would work
[self.caption sizeWithFont:font].width
as for ios 7 and up this is the correct way:
NSString * buttonTitle = #"demo title";
CGSize stringSize = [buttonTitle sizeWithAttributes:#{NSFontAttributeName: [UIFont systemFontOfSize:17.0f]}];
This works with iOS 14.5
Objective-C
Define attributes:
NSDictionary *attributes = #{
NSFontAttributeName: [UIFont fontWithName:#"Helvetica" size:25],
NSStrokeWidthAttributeName: #(0),
NSStrokeColorAttributeName: [UIColor blackColor]
};
Get width and height:
- (CGFloat)widthOfString:(NSString *)string {
CGSize stringSize = [string sizeWithAttributes:attributes];
return stringSize.width;
}
- (CGFloat)heightOfString:(NSString *)string {
CGSize stringSize = [string sizeWithAttributes:attributes];
return stringSize.height;
}
Sorry my question was not detailed enough and is not exactly what I'm trying to do. I am using a text storage, layout manager and a text container. The solution is to use the layout manager to determine the rectangle that bounds the rect. Here is the code.
NSTextStorage *textStorage = [[NSTextStorage alloc] initWithString:#"hello"];
NSLayoutManager *layoutManager = [[NSLayoutManager alloc] init];
NSTextContainer *textContainer = [[NSTextContainer alloc] init];
[layoutManager addTextContainer:textContainer];
[textContainer release];
[textStorage addLayoutManager:layoutManager];
[layoutManager release];
//Figure out the bounding rectangle
NSRect stringRect = [layoutManager boundingRectForGlyphRange:NSMakeRange(0, [layoutManager numberOfGlyphs]) inTextContainer:textContainer];
UIKit has a nice addition to NSString, making sizeWithAttributes: a bit lighter:
CGSize titleSize = [title sizeWithFont:titleFont
constrainedToSize:contentCellSize
lineBreakMode:UILineBreakModeWordWrap];
Here's Stephen's solution in Clozure Common Lisp, when using the Objective C bridge. I came across this post when searching for a solution, and I just rewrote Stephen's version which worked fine for me. Others using Clozure might find this helpful:
(defun string-width (str font)
(let* ((dict (#/dictionaryWithObjectsAndKeys: ns:ns-mutable-dictionary
font #$NSFontAttributeName
ccl:+null-ptr+))
(attr (#/initWithString:attributes: (#/alloc ns:ns-attributed-string)
(ccl::%make-nsstring str)
dict))
(size (#/size attr)))
(ns:ns-size-width size)))
This will work. You can try it.
NSDictionary *attrDict = #{NSFontAttributeName : [GenericUtility getOpenSansRegularFontSize:12]};
CGSize stringBoundingBox = [selectedReservationModel.DateLabel sizeWithAttributes: attrDict];
lblDeliveryDateWidth = stringBoundingBox.width;
Just in case you are wondering how to check a label size, you should use the UIFont, instead of the NSFont (not even sure if exists)