I have to format a string with 3 styles. The string is something like:
1.0000 of 2.000
1.0000 has a foreground red color, of has a smaller font and 2.000 has to be green.
The problem is that the numbers could be in any range, so the first and the second numbers could be composed by 4,5,6 whatever chars.
How can I perform formatting of a string like that?
Edit-----------------
I add some more info: the string maintains its format. So for example this could be its template: N of N
Lets suppose you have these three :
NSString *string0 = #"1.0000"; NSString *string1 = #"of"; NSString
*string2 = #"2.000";
NSString *text = [NSString stringWithFormat:#"%# %# %#",
string0 ,string1,string2];
//whole String attribute
NSDictionary *attribs = #{
NSForegroundColorAttributeName:[UIColor whiteColor],
NSFontAttributeName:[UIFont systemFontOfSize:10]
};
NSMutableAttributedString *attributedText = [[NSMutableAttributedString alloc] initWithString:text attributes:attribs];
NSRange string0Range = [text rangeOfString:string0];
NSRange string1Range = [text rangeOfString:string1];
NSRange string2Range = [text rangeOfString:string2];
[attributedText setAttributes:#{NSForegroundColorAttributeName:[UIColor redColor], NSFontAttributeName:[UIFont systemFontOfSize:15] range:string0Range];
[attributedText setAttributes:#{NSForegroundColorAttributeName:[UIColor blackColor], NSFontAttributeName:[UIFont systemFontOfSize:12] range:string1Range]; [attributedText setAttributes:#{NSForegroundColorAttributeName:[UIColor greenColor], NSFontAttributeName:[UIFont systemFontOfSize:15] range:string2Range];
[yourLabel setAttributedText:attributedText];
Use NSScanner or NSRegularExpression to find the numeric expression and its pieces.
The simplest solution would be :
NSString* myString = #"12.345 of 56.789";
NSMutableAttributedString * tempString = [[NSMutableAttributedString alloc] initWithString:myString];
NSRange midrange = [tempString.string rangeOfString:#"of"];
[tempString addAttributes:#{NSFontAttributeName : [UIFont fontWithName:#"HelveticaNeue" size:16.6],
NSForegroundColorAttributeName : [UIColor redColor]}
range:NSMakeRange(0, midrange.location)];
[tempString addAttributes:#{NSFontAttributeName : [UIFont fontWithName:#"HelveticaNeue" size:16.6],
NSForegroundColorAttributeName : [UIColor blackColor]}
range:midrange];
[tempString addAttributes:#{NSFontAttributeName : [UIFont fontWithName:#"HelveticaNeue" size:16.6],
NSForegroundColorAttributeName : [UIColor greenColor]}
range:NSMakeRange(midrange.location + midrange.length, tempString.length - midrange.location - midrange.length)];
yourElement.attributedText = tempString;
Related
This question already has answers here:
Are there any analogues of [NSString stringWithFormat:] for NSAttributedString
(4 answers)
Closed 6 years ago.
I have a string like this
NSString * string = [[NSString alloc]initwithformat: #"The current balance left is %# out of %#",leftAmount,totalAmount];
How can i change the colour of string recieved as %# without knowing the range of the recieved string.
Do something like this,
NSString *leftAmount = #"1000";
NSString *totalAmount = #"2000";
UIColor *color = [UIColor redColor];
NSDictionary *attrs = #{ NSForegroundColorAttributeName : color };
NSAttributedString *attrStr = [[NSAttributedString alloc] initWithString:leftAmount attributes:attrs];
NSAttributedString *attrStr1 = [[NSAttributedString alloc] initWithString:totalAmount attributes:attrs];
NSMutableAttributedString * string = [[NSMutableAttributedString alloc] initWithString:#"The current balance left is "];
[string appendAttributedString:attrStr];
NSMutableAttributedString * string1 = [[NSMutableAttributedString alloc] initWithString:#" out of "];
[string1 appendAttributedString:attrStr1];
[string appendAttributedString:string1];
NSLog(#"Your Full String - %#", string);
Hope this will help you.
do something like this,
NSString *leftAmount,*totalAmount;
leftAmount = #"1000";
totalAmount = #"2000";
NSString * string = [NSString stringWithFormat:#"The current balance left is %# out of %#",leftAmount,totalAmount];
NSDictionary *attribs = #{
NSForegroundColorAttributeName: [UIColor blueColor],
NSFontAttributeName: [UIFont systemFontOfSize:12]
};
NSMutableAttributedString *attributedText =
[[NSMutableAttributedString alloc] initWithString:string
attributes:attribs];
UIColor *grayColor = [UIColor colorWithRed:186.0f/255.0f green:186.0f/255.0f blue:186.0f/255.0f alpha:1];
NSRange leftAmountTextRange = [string rangeOfString:leftAmount];
[attributedText setAttributes:#{NSForegroundColorAttributeName:grayColor}
range:leftAmountTextRange];
It'll also calculate the dynamic data value range.
I hope it will helps you,
Thanks.
I need to append 2 NSMutableAttributedString for my UITextview when user selection different words like the example.
string = #"blabla1 blabla2 blabla3"
in first time the user select #"blabla1"
and the text looks like that #"blabla1 blabla2 blabla3"
and after I select #"blabla3" the result I want to get in My UITextview is #"blabla1 blabla2 blabla3"
now the result I get is #"blabla1 blabla2 blabla3 blabla1 blabla2 blabla3"
that my code :
-(NSMutableAttributedString*)getNSMutableAttributedString:(NSString*)string withRange:(NSRange)range withTextView:(UITextView*)textView
{
if (!str)
{
str = [[NSMutableAttributedString alloc] initWithString:string];
UIFont *font = [UIFont boldSystemFontOfSize:16];
[str addAttribute:NSFontAttributeName value:font range:NSMakeRange(range.location, range.length)];
}
else
{
NSMutableAttributedString *mutableAttString = [[NSMutableAttributedString alloc] initWithString:string];
UIFont *font = [UIFont boldSystemFontOfSize:16];
[mutableAttString addAttribute:NSFontAttributeName value:font range:NSMakeRange(range.location, range.length)];
NSMutableAttributedString *first = str;
NSMutableAttributedString *second = mutableAttString;
NSMutableAttributedString* result = [first mutableCopy];
[result appendAttributedString:second];
str = result;
}
return str;
}
Attributes can be added multiply times to one string.And you create a new attributedString from string, which don't have attributes.
In result you receive #"blabla1 blabla2 blabla3 blabla1 blabla2 blabla3"
-(NSMutableAttributedString*)getNSMutableAttributedString:(NSMutableAttributedString*)string withRange:(NSRange)range withTextView:(UITextView*)textView
{
if (!str)
{
str = [[NSMutableAttributedString alloc] initWithAttributedString:string];
UIFont *font = [UIFont boldSystemFontOfSize:16];
[str addAttribute:NSFontAttributeName value:font range:NSMakeRange(range.location, range.length)];
}
else
{
UIFont *font = [UIFont boldSystemFontOfSize:16];
[str addAttribute:NSFontAttributeName value:font range:NSMakeRange(range.location, range.length)];
}
return str;
}
What you should be doing is get str (the existing attributedText from the UITextView) and then add an attribute to the specific range
str = [textView attributedText];
UIFont *font = [UIFont boldSystemFontOfSize:16];
[str addAttribute:NSFontAttributeName value:font range:NSMakeRange(range.location, range.length)];
return str;
What you are doing is creating a new attributed string with the same content but different attributes and then appending to the existing attributedText. That is why you see the text repeated twice.
I have the following string
22\nShaʻban\n1435
and i'm using NSMutableAttributedString to format the above string using multiple fonts as follows:
NSString* orgString=#"22\nShaʻban\n1435";
NSMutableAttributedString *attString=[[NSMutableAttributedString alloc] initWithString:[dateStr stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]];
UIFont *dayFont=[UIFont fontWithName:#"Helvetica-Bold" size:40.0f];
UIFont *monthFont=[UIFont fontWithName:#"Arial" size:22.0f];
UIFont *yearFont=[UIFont fontWithName:#"Arial" size:20.0f];
//format day part
[attString addAttribute:NSFontAttributeName value:dayFont range:NSMakeRange(0,2)];
//format month part
[attString addAttribute:NSFontAttributeName value:monthFont range:NSMakeRange(3,[self indexOf:[dateStr substringFromIndex:3] andSearchChar:#"\n"])];
//format year part, app crashes here
[attString addAttribute:NSFontAttributeName value:yearFont range:NSMakeRange([self indexOf:[dateStr substringFromIndex:3] andSearchChar:#"\n"]+1,[dateStr length])];
- (int) indexOf:(NSString*)orgStr andSearchChar:(NSString *)charToSearc {
NSRange range = [orgStr rangeOfString:charToSearc];
if ( range.length > 0 ) {
return range.location;
} else {
return -1;
}
}
i don't know why it crashes when trying to format the last part, i made arrange from the last position in part two +1 to the length of the string, any help please
NSRange NSMakeRange (
NSUInteger loc,
NSUInteger len
);
A range is a location and a length, not a start and end location. So you need to change how you calculate the range content.
Or, split the source string apart, create an attributed string for each part and then append them together.
I'd suggest this:
NSString* orgString=#"22\nShaʻban\n1435";
NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] init];
UIFont *dayFont = [UIFont fontWithName:#"Helvetica-Bold" size:40.0f];
UIFont *monthFont = [UIFont fontWithName:#"Arial" size:22.0f];
UIFont *yearFont = [UIFont fontWithName:#"Arial" size:20.0f];
NSArray *array = [orgString componentsSeparatedByString:#"\n"];
[attrString appendAttributedString:[[NSAttributedString alloc] initWithString:[array objectAtIndex:0] attributes:#{NSFontAttributeName: dayFont}]];
[attrString appendAttributedString:[[NSAttributedString alloc] initWithString:#"\n"]];
[attrString appendAttributedString:[[NSAttributedString alloc] initWithString:[array objectAtIndex:1] attributes:#{NSFontAttributeName: monthFont}]];
[attrString appendAttributedString:[[NSAttributedString alloc] initWithString:#"\n"]];
[attrString appendAttributedString:[[NSAttributedString alloc] initWithString:[array objectAtIndex:2] attributes:#{NSFontAttributeName: yearFont}]];
So, no NSRange issue. Plus as said by #Wain, you misunderstood what's a NSRange.
Instead of what you're doing, once you found the location, you had to put, as second parameter of NSMakeRange: nextLocation-currentLocation. Id est, for last one, something like this:
NSMakeRange([self indexOf:[dateStr substringFromIndex:3] andSearchChar:#"\n"]+1,
[dateStr length]-[self indexOf:[dateStr substringFromIndex:3] andSearchChar:#"\n"]+1)
NSString * strTimeBefore = [timeBefore componentsJoinedByString:#" "];
NSString * strTimeAfter = [timeAfter componentsJoinedByString:#" "];
I want the resulting string to be an NSAttributedString where the time in strTimeAfter is in bold
You probably want something like:
NSString *boldFontName = [[UIFont boldSystemFontOfSize:12] fontName];
NSString *yourString = [NSString stringWithFormat:#"%# %#", strTimeBefore, strTimeAfter;
// start at the end of strTimeBefore and go the length of strTimeAfter
NSRange boldedRange = NSMakeRange([strTimeBefore length] + 1, [strTimeAfter length]);
NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:yourString];
[attrString beginEditing];
[attrString addAttribute:NSFontAttributeName
value:boldFontName
range:boldedRange];
[attrString endEditing];
And my answer is cribbed from Jacob's answer to this very closely related question.
Take two attribute string in that store your first string into one attribute string without changing its attributes, In second attribute string store your second string with changing its attibutes and then append both attribute string into one NSMutableAttributeString Try like this below:-
NSString * strTimeBefore = [timeBefore componentsJoinedByString:#" "];
NSString * strTimeAfter = [timeAfter componentsJoinedByString:#" "];
NSAttributedString *attrBeforeStr=[[NSAttributedString alloc]initWithString:strTimeBefore];
NSMutableDictionary *attributes = [[NSMutableDictionary alloc] init];
[attributes setObject:[NSColor yellowColor] forKey:NSBackgroundColorAttributeName];
NSFont *font = [[NSFontManager sharedFontManager] fontWithFamily:#"Arial" traits:NSBoldFontMask weight:5 size:14];
[attributes setObject:font forKey:NSFontAttributeName];
NSAttributedString *attrAftStr=[[NSAttributedString alloc]initWithString:strTimeAfter attributes:];
NSMutableAttributedString *string=[[NSMutableAttributedString alloc] init];
[string appendAttributedString:attrBeforeStr];
[string appendAttributedString:strTimeAfter];
Note: You can change font color as well in attribute string, if it is required.
Is there any way to bold only part of a string?
For example:
Approximate Distance: 120m away
Thanks!
What you could do is use an NSAttributedString.
NSString *boldFontName = [[UIFont boldSystemFontOfSize:12] fontName];
NSString *yourString = ...;
NSRange boldedRange = NSMakeRange(22, 4);
NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:yourString];
[attrString beginEditing];
[attrString addAttribute:kCTFontAttributeName
value:boldFontName
range:boldedRange];
[attrString endEditing];
//draw attrString here...
Take a look at this handy dandy guide to drawing NSAttributedString objects with Core Text.
As Jacob mentioned, you probably want to use an NSAttributedString or an NSMutableAttributedString. The following is one example of how you might do this.
NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:#"Approximate Distance: 120m away"];
NSRange selectedRange = NSMakeRange(22, 4); // 4 characters, starting at index 22
[string beginEditing];
[string addAttribute:NSFontAttributeName
value:[NSFont fontWithName:#"Helvetica-Bold" size:12.0]
range:selectedRange];
[string endEditing];
If you do not want to bother with fonts (as not every variation of font contains "Bold"), here is another way to do this. Please be aware, this is currently only available on OS X...:
NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:"Approximate Distance: 120m away"];
[attrString beginEditing];
[attrString applyFontTraits:NSBoldFontMask
range:NSMakeRange(22, 4)];
[attrString endEditing];
The code above gave me crash when I created UILabel with this attributedString.
I used this code and it worked:
NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:string];
NSRange boldedRange = NSMakeRange(0, 1);
UIFont *fontText = [UIFont systemFontOfSize:12]; //[UIFont fontWithName:#"Lato-Bold" size:12];
NSDictionary *dictBoldText = [NSDictionary dictionaryWithObjectsAndKeys:fontText, NSFontAttributeName, nil];
[attrString setAttributes:dictBoldText range:boldedRange];
Swift
Also includes getting the range of the string you want to embolden dynamically
let nameString = "Magoo"
let string = "Hello my name is \(nameString)"
let attributes = [NSFontAttributeName:UIFont.systemFontOfSize(14.0),NSForegroundColorAttributeName: UIColor.black]
let boldAttribute = [NSFontAttributeName:UIFont.boldSystemFontOfSize(14.0)]
let attributedString = NSMutableAttributedString(string: string, attributes: attributes)
let nsString = NSString(string: string)
let range = nsString.rangeOfString(nameString)
if range.length > 0 { attributedString.setAttributes(boldAttribute, range: range) }
someLabel.attributedText = attributedString
To bold a string without hardcoding its font, you can use the StrokeWidth attribute with a negative value:
let s = NSMutableAttributedString(string: "Approximate Distance: 120m away")
s.addAttribute(NSStrokeWidthAttributeName, value: NSNumber(value: -3.0), range: NSRange(22..<26))
An NSString is just a data container. It doesn't contain any details about presentation concerns.
It sounds like what you probably want to do is bold part of the UILabel that is being used to display your string. Which I don't think you can do. But you could always break the UI down into three labels, one for "Approximate Distance:", one for "120 m", and one for "away". Place them in-line with each other and you should get the desired effect.
Another option might be to use a UIWebView and a little bit of markup to display your string with embedded formatting information, as discussed here:
http://iphoneincubator.com/blog/windows-views/display-rich-text-using-a-uiwebview
In Xamarin ios you can bold part of a NSString this way:
public static NSMutableAttributedString BoldRangeOfString (string str, float fontSize, int startRange, int lengthRange)
{
var firstAttributes = new UIStringAttributes {
Font = UIFont.BoldSystemFontOfSize(fontSize)
};
NSMutableAttributedString boldString = new NSMutableAttributedString (str);
boldString.SetAttributes (firstAttributes.Dictionary, new NSRange (startRange, lengthRange));
return boldString;
}
and call this method:
myLabel = new UILabel ();
...
myLabel.AttributedText = BoldRangeOfString("my text", fontSize, startRange, lengthRange);
I coupled #Jacob Relkin and #Andrew Marin answers, otherwise, I got the crashes. Here is the answer for iOS9:
UIFont *boldFont = [UIFont boldSystemFontOfSize:12];
NSString *yourString = #"Approximate Distance: 120m away";
NSRange boldedRange = NSMakeRange(22, 4);
NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:yourString];
[attrString beginEditing];
[attrString addAttribute:NSFontAttributeName
value:boldFont
range:boldedRange];
[attrString endEditing];
I took a look at the official documentation: 1 and 2.
Shorter way using Swift5+
let labelNotes = UILabel() //or UITextView(), etc...
let attributedNotes = NSMutableAttributedString(string: "Bold: some stuff not bold")
attributedNotes.addAttribute(NSAttributedString.Key.font, value: UIFont.boldSystemFont(ofSize: 14), range: NSRange(location: 0, length: 5))
labelNotes.attributedText = attributedNotes
If you don't want to hardcode the font or/and the size try this code for bolding full strings:
NSMutableAttributedString *myString = [[NSMutableAttributedString alloc] initWithString:mainString];
[myString beginEditing];
[myString addAttribute:NSStrokeWidthAttributeName
value:[[NSNumber alloc] initWithInt: -3.f]
range:NSMakeRange(0, [mainString length])];
[myString endEditing];