Why does setting an indent on the paragraph style attribute not have an affect on a UILabel using NSAttributedString?
For example:
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
paragraphStyle.firstLineHeadIndent = 50;
NSDictionary *attributes = #{
NSForegroundColorAttributeName : [UIColor redColor],
NSParagraphStyleAttributeName : paragraphStyle,
};
NSString *string = #"some string";
self.label.attributedText = [[NSAttributedString alloc] initWithString:string
attributes:attributes];
UILabel with indentation (green background set to see the label size):
UILabel without indentation (green background set to see the label size):
Related
I have a UILabel which is displaying emojis incorrectly.
Here is a screenshot from iOS app:
And here is a screenshot from Android app which is displaying the same text with the emoji correctly.
I have tried answers from here but they did not help.
Example string : "تم البيع والله يبارك للمشتري♥️"
Here is the code:
NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:comment.body];
UIFont *cellFont = [UIFont preferredFontForTextStyle:UIFontTextStyleSubheadline];
NSDictionary *attributesDictionary;
NSMutableParagraphStyle *paragraphStyle =
[[NSMutableParagraphStyle alloc] init];
paragraphStyle.lineSpacing = 10;
paragraphStyle.alignment = NSTextAlignmentRight;
paragraphStyle.allowsDefaultTighteningForTruncation = true;
attributesDictionary = #{
NSParagraphStyleAttributeName : paragraphStyle,
NSFontAttributeName : cellFont,
NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,
NSCharacterEncodingDocumentAttribute: #(NSUTF8StringEncoding)
};
[str addAttributes:attributesDictionary
range:NSMakeRange(0, str.length)];
cell.commentTextLabel.attributedText = str;
Any help would be appreciated.
Use the emoji's unicode.
in your case, the unicode for the red heart is: U+2764 U+FE0F .
Objective C code :
cell.commentTextLabel.text = #"تم البيع والله يبارك للمشتري \U00002764 \U0000FE0F";
Swift code:
cell.commentTextLabel.text = "تم البيع والله يبارك للمشتري \u{2764} \u{FE0F}"
For more emojis, In Xcode go Edit -> Emoji & Symbols, choose an emoji then right click on it and click Copy Character Info Button. Paste it and you will get for the red heart:
❤️
red heart
Unicode: U+2764 U+FE0F, UTF-8: E2 9D A4 EF B8 8F
I was able to solve this issue by using the following code:
NSData *data = [comment.body dataUsingEncoding:NSUTF16StringEncoding allowLossyConversion:false];
NSMutableAttributedString *str = [[NSMutableAttributedString alloc ] initWithData:data options:#{NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType} documentAttributes:nil error:nil];
UIFont *cellFont = [UIFont preferredFontForTextStyle:UIFontTextStyleSubheadline];
NSDictionary *attributesDictionary;
NSMutableParagraphStyle *paragraphStyle =
[[NSMutableParagraphStyle alloc] init];
paragraphStyle.lineSpacing = 10;
paragraphStyle.alignment = NSTextAlignmentRight;
attributesDictionary = #{
NSParagraphStyleAttributeName : paragraphStyle,
NSFontAttributeName : cellFont
};
[str addAttributes:attributesDictionary range:NSMakeRange(0, str.length)];
cell.commentTextLabel.attributedText = str;
In here comment.body is the string fetched from server which contains the emoji.
The result was like this:
Thanks to Larme for his help in the comments.
I have a multiline UILabel of which I would like to increase the line height, but I also want part of it to be a different color, only the line height works fine. But as soon as I try to change the color for a certain range it just goes back to the stock appearance, no line either..
Anyone a tip? This is done in the content setter.
- (void)setContent:(NSString *)content {
_content = content;
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:self.content];
NSMutableAttributedString *mutableAttrString = [attributedString mutableCopy];
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[paragraphStyle setLineSpacing: 5.0f];
NSDictionary *attributes = #{
NSFontAttributeName: [UIFont fontWithName:#"BentonSans-Regular" size:16.0],
NSParagraphStyleAttributeName: paragraphStyle
};
NSDictionary *colorAttributes = #{
NSForegroundColorAttributeName: [UIColor redColor]
};
[mutableAttrString addAttributes:attributes range:NSRangeFromString(self.content)];
[mutableAttrString addAttributes:colorAttributes range:NSMakeRange(4, 8)];
[self.label setAttributedText: mutableAttrString];
}
Thanks!
The NSRangeFromString function expects a string like #"{3,10}". In other words, it expects a string that contains two numbers that specify the starting location and length of the range. I suspect that the content string isn't a string like that.
So this line
[mutableAttrString addAttributes:attributes range:NSRangeFromString(self.content)];
should be
[mutableAttrString addAttributes:attributes range:NSMakeRange(0,mutableAttrString.length)];
in your viewdidLoad Method assign string to self.content :
self.content = #"pass your text ";
// Remove the First line of your method it is not needed
- (void)setContent:(NSString *)content {
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:self.content];
NSMutableAttributedString *mutableAttrString = [attributedString mutableCopy];
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[paragraphStyle setLineSpacing: 5.0f];
NSDictionary *attributes = #{
NSFontAttributeName: [UIFont fontWithName:#"BentonSans-Regular" size:16.0],
NSParagraphStyleAttributeName: paragraphStyle
};
NSDictionary *colorAttributes = #{
NSForegroundColorAttributeName: [UIColor redColor]
};
[mutableAttrString addAttributes:attributes range:NSRangeFromString(self.content)];
[mutableAttrString addAttributes:colorAttributes range:NSMakeRange(4, 8)];
[self.label setAttributedText: mutableAttrString];
}
I'm trying to put a justified text for a UITextView with NSMutableAttributedString, the NSMutableAttributedString is composed of different NSAttributedString because I need bold and regular font, so I append different NSString, this is my NSMutableAttributedString:
NSAttributedString *one = [[NSAttributedString alloc] initWithString:#"abc"
attributes:boldDict];
NSAttributedString *two = [[NSAttributedString alloc] initWithString:#" def"
attributes:regularDict];
NSAttributedString *three = [[NSAttributedString alloc] initWithString:#" ghi"
attributes:boldDict];
NSMutableAttributedString *string =
[[NSMutableAttributedString alloc] initWithAttributedString:one];
[string appendAttributedString:two];
[string appendAttributedString:three];
I have tried this:
[self.text_view setTextAlignment:NSTextAlignmentJustified]
and this:
NSMutableParagraphStyle *paragraphStyles = [[NSMutableParagraphStyle alloc] init];
paragraphStyles.alignment = NSTextAlignmentJustified;
Dictionary *attributes = #{NSParagraphStyleAttributeName: paragraphStyles};
and apply this to NSMutableAttributedString, but neither works. how i can do?
I fixed the same problem by specifying transparent background color for the NSAttributedString.
Looks like a bug in the UILabel code which should render simple NSAttributedString like NSString.
Xamarin.iOS example:
var paragraphStyle = new NSMutableParagraphStyle();
paragraphStyle.Alignment = UITextAlignment.Justified;
var attributedText = new NSAttributedString(simpleString,
paragraphStyle: paragraphStyle,
backgroundColor: Color.Transparent.ToUIColor());
myLabel.AttributedText = attributedText;
There is a problem with line spacing in UILabel, I am using custom font and when I use smilies there is no space between two lines. which obviously looks not so good. So I used this code for line spacing but app crashes giving the error
Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'NSAttributedString invalid for autoresizing, it must have a single spanning paragraph style (or none) with a non-wrapping lineBreakMode.'
if ([cell.label2 respondsToSelector:#selector(setAttributedText:)])
{
UIFont *font =btMyriadProRegularWithSize14Pt;
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[paragraphStyle setLineSpacing: 22];
NSDictionary *attributes = #{ NSFontAttributeName: font, NSParagraphStyleAttributeName: paragraphStyle };
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:chatMessage.msgString attributes:attributes];
[cell.label2 setAttributedText: attributedString];
}
else
{
NSString * msg = [NSString stringWithFormat:#"%#: %#",chatMessage.from,chatMessage.msgString];
cell.label2.text = msg;
}
try this
[cell.label2 setAdjustsFontSizeToFitWidth:NO];
maybe even only for iOS6
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) { //*
[cell.label2 setAdjustsFontSizeToFitWidth:NO];
}
detect iOS 6 as decribed here: https://developer.apple.com/library/ios/documentation/userexperience/conceptual/transitionguide/SupportingEarlieriOS.html
Set up Attributable String
NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
[paragraph setLineBreakMode:NSLineBreakByWordWrapping];
[paragraph setLineBreakMode:NSLineBreakByTruncatingTail];
self.attrText = [[NSMutableAttributedString alloc] initWithString:text];
[self.attrText addAttribute:NSParagraphStyleAttributeName value:paragraph range:NSMakeRange(0, text.length)];
self.Text = text;
In the iOS 5 version of my app I had:
[self.text drawInRect: stringRect
withFont: [UIFont fontWithName: #"Courier" size: kCellFontSize]
lineBreakMode: NSLineBreakByTruncatingTail
alignment: NSTextAlignmentRight];
I'm upgrading for iOS 7. The above method is deprecated. I'm now using drawInRect:withAttributes:. The attributes parameter is an NSDictionary object. I can get drawInRect:withAttributes: to work for the former font parameter using this:
UIFont *font = [UIFont fontWithName: #"Courier" size: kCellFontSize];
NSDictionary *dictionary = [[NSDictionary alloc] initWithObjectsAndKeys: font, NSFontAttributeName,
nil];
[self.text drawInRect: stringRect
withAttributes: dictionary];
What key-value pairs do I add to dictionary to get NSLineBreakByTruncatingTail and NSTextAlignmentRight?
There is one key to set the paragraph style of the text (including line breaking mode, text alignment, and more).
From docs:
NSParagraphStyleAttributeName
The value of this attribute is an NSParagraphStyle object. Use this attribute to apply multiple attributes to a range of text. If you do not specify this attribute, the string uses the default paragraph attributes, as returned by the defaultParagraphStyle method of NSParagraphStyle.
So, you can try the following:
UIFont *font = [UIFont fontWithName:#"Courier" size:kCellFontSize];
/// Make a copy of the default paragraph style
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
/// Set line break mode
paragraphStyle.lineBreakMode = NSLineBreakByTruncatingTail;
/// Set text alignment
paragraphStyle.alignment = NSTextAlignmentRight;
NSDictionary *attributes = #{ NSFontAttributeName: font,
NSParagraphStyleAttributeName: paragraphStyle };
[text drawInRect:rect withAttributes:attributes];
The code is going that way:
CGRect textRect = CGRectMake(x, y, length-x, maxFontSize);
UIFont *font = [UIFont fontWithName:#"Courier" size:maxFontSize];
NSMutableParagraphStyle *paragraphStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
paragraphStyle.lineBreakMode = NSLineBreakByTruncatingTail;
paragraphStyle.alignment = NSTextAlignmentRight;
NSDictionary *attributes = #{ NSFontAttributeName: font,
NSParagraphStyleAttributeName: paragraphStyle,
NSForegroundColorAttributeName: [UIColor whiteColor]};
[text drawInRect:textRect withAttributes:attributes];