Dynamic Number of UILabels in custom tableviewcell - ios

Question

I created a custom tableview cell and I want to display some strings in that cell. I fetch strings from backend thus I don't know how many labels I needed. I tried to concat strings in one label and implemented like below however I want to display strings with different attributes after char ":".
for (AttributesModel* attribute in model.attributes) {
NSString *attributeName = attribute.name;
attributeString = [[attributeString stringByAppendingString: attributeName] mutableCopy];
attributeString = [[attributeString stringByAppendingString: #" : "] mutableCopy];
for (NSDictionary *value in attribute.options) {
attributeString = [[attributeString stringByAppendingString: [value objectForKey:#"name"] ] mutableCopy];
attributeString = [[attributeString stringByAppendingString: #", "] mutableCopy];
}
attributeString = [[attributeString stringByAppendingString: #"\n"] mutableCopy];
}
I could not change attributes of strings thats located after char ":".
Are there any way to do that? Can I create dynamic number of labels in cell or only change attributes of strings that are only located after ":" ?

Answer 1

It sounds like you want to change the attributes such as formatting of a section of text within a UILabel. You can do this by:
Creating an attributed, mutable copy of your string (a.k.a converting an NSString into an NSMutableAttributedString).
Changing the attributes to parts of this copy.
Setting your label's attributedText property to your attributed string.
NSString *myString = #"This is my string";
NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:myString];
NSMutableAttributedString *mutableAttributedString = [attributedString mutableCopy];
// The range of text to change, i.e. start from the 5th index
// (starting from 0 like arrays), and continue for 2 characters:
NSRange rangeOfSecondWord = NSMakeRange(5, 2);
// The list of attributes to apply to that range:
NSDictionary *myAttributes = #{
NSForegroundColorAttributeName : [UIColor redColor],
};
// Actually apply the attributes:
[mutableAttributedString setAttributes:myAttributes range:rangeOfSecondWord];
// Set the text of the label to the attributed string:
myLabel.attributedText = mutableAttributedString;
For a list of attributes that you can set in your dictionary, see the Character Attributes reference.
Since you're downloading your strings, you may not know the range beforehand. Since you're concatenating them, here is how you can find the range dynamically:
NSString *stringOne = #"My name is ";
NSString *stringTwo = #"John Citizen";
NSString *joinedStrings = [stringOne stringByAppendingString:stringTwo];
NSRange rangeOfStringTwo = [joinedStrings rangeOfString:stringTwo];