Have multiple ranges with different attributes on NSAttributedString - ios

Question

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!

Answer 1

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)];

Answer 2

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];
}