Attributed String issue

Question

I am new to iOS, I am using attributed string in my application. Actually my requirement is in my string like

NSString *stg = @"Hi I am Very Good Boy";

here I need to change the Background of each space " " to block colour

Please help me anyone

&regards

refer this link http://stackoverflow.com/questions/14231879/is-it-possible-to-change-color-of-single-word-in-uitextview-and-uitextfield — karthikeyan, Aug 07 '14 at 08:27
Black color means the space shoule be filled with Black Background colour — Hak, Aug 07 '14 at 08:41

score 0 · Answer 1 · edited May 23 '17 at 10:30

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Answers to this question will be helpful. You need to work out the ranges for spaces. One way to do this is to call rangeOfString:options:range until you have gone through the entire string. See the NSString reference

edited May 23 '17 at 10:30

Community

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answered Aug 07 '14 at 08:16

Lev Landau

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score 0 · Answer 2 · answered Aug 07 '14 at 08:45

0

Use this it will helpful for you.

        NSMutableAttributedString * string = [[NSMutableAttributedString alloc]initWithString:txtField.text];
        NSRange range=[txtField.text rangeOfString:@" "];
        [string addAttribute:NSBackgroundColorAttributeName value:[UIColor redColor] range:range];
        [txtField setAttributedText:string];

answered Aug 07 '14 at 08:45

Vineesh TP

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if i wrote above code only first space" " from starting point background should be black colour and remaining are not – Hak Aug 07 '14 at 09:47
That is why you need to use `rangeOfString:options:range:` – Lev Landau Aug 07 '14 at 15:03

score 0 · Answer 3 · answered Aug 07 '14 at 10:37

Here is a sample code that change the space background colour.

NSMutableAttributedString *mutableString = nil;

//NSString *sampleText = self.lblTest.text;
NSString *sampleText = @"Hi I am Very Good Boy I";
mutableString = [[NSMutableAttributedString alloc] initWithString:sampleText];

NSString *pattern = @" ";
NSRegularExpression *expression = [NSRegularExpression regularExpressionWithPattern:pattern options:0 error:nil];

//  enumerate matches
NSRange range = NSMakeRange(0,[sampleText length]);

[expression enumerateMatchesInString:sampleText options:0 range:range usingBlock:^(NSTextCheckingResult *result, NSMatchingFlags flags, BOOL *stop)
 {
     NSRange range = [result rangeAtIndex:0];
     // I am using the NSBackgroundColorAttributeName to change the background of space
     [mutableString addAttribute:NSBackgroundColorAttributeName value:[UIColor blueColor] range:range];
 }];

[self.lblTest setAttributedText:mutableString];

Attributed String issue

3 Answers3