使用NSMutableAttributedString突出显示的大小写文本

Question

I having text is " God is great, and the great god absolute!, GOD bless me." I have displayed this text in tableviewcell and I used NSMutableAttributedString .

Example 1. GOD 2. God 3. god

When I search text "god" it highlights text like "god" but I need highlight a text like GOD, God and god whatever it should be highlighted.

code

NSString *initial = [NSString stringWithFormat:@"%@ %d - %d : %@",[appDelegate.arrChapterName objectAtIndex:nBookNo-1],[[arrVerses objectAtIndex:1] integerValue],[[arrVerses objectAtIndex:2] integerValue],[arrVerses objectAtIndex:3]];

        NSMutableAttributedString *mutableAttributedString = [[NSMutableAttributedString alloc] initWithString:initial];
        NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:[NSString stringWithFormat:@"(%@)",searchBar.text] options:kNilOptions error:nil];

        NSRange range = NSMakeRange(0,initial.length);

        [regex enumerateMatchesInString:initial options:kNilOptions range:range usingBlock:^(NSTextCheckingResult *result, NSMatchingFlags flags, BOOL *stop) {

            NSRange subStringRange = [result rangeAtIndex:1];
            [mutableAttributedString addAttribute:NSBackgroundColorAttributeName value:[UIColor lightGrayColor] range:subStringRange];
        }];

            cell.textLabel.attributedText = mutableAttributedString;

Answer 1

Consider replacing your regex expression with the following code:

NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:[NSString stringWithFormat:@"(%@)",searchBar.text]
                 options:NSRegularExpressionCaseInsensitive error:nil];

For more information and example refer here .

Answer 2

Here you go,

NSString *initial = [NSString stringWithFormat:@"%@ %d - %d : %@",[appDelegate.arrChapterName objectAtIndex:nBookNo-1],[[arrVerses objectAtIndex:1] integerValue],[[arrVerses objectAtIndex:2] integerValue],[arrVerses objectAtIndex:3]];

NSMutableAttributedString *mutableAttributedString = [[NSMutableAttributedString alloc] initWithString:initial];
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:[NSString stringWithFormat:@"(%@)",searchBar.text] options:NSRegularExpressionCaseInsensitive error:nil];

NSRange range = NSMakeRange(0,initial.length);

[regex enumerateMatchesInString:initial options:kNilOptions range:range usingBlock:^(NSTextCheckingResult *result, NSMatchingFlags flags, BOOL *stop) {

    NSRange subStringRange = [result rangeAtIndex:1];
    [mutableAttributedString addAttribute:NSBackgroundColorAttributeName value:[UIFont boldSystemFontOfSize:12.0] range:subStringRange];
}];

cell.textLabel.attributedText = mutableAttributedString;