如何在IOS中以编程方式创建TTTAttributedLabel对齐中心

Question

我正在开发一个应用程序,其中我有一个字符串,其中包含前缀为#的标签.

我正在使用TTTAttribute标签添加指向给定字符串中具有前缀#的单词的链接.

当我添加到TTTAttribute标签的链接时.它成功添加,当点击它时,我能够在该字符串中获得具有前缀#的所选单词.

但我无法根据字符串长度对齐TTTAttribute标签的中心.

默认属性

attributedLabel.verticalAlignment = TTTAttributedLabelVerticalAlignmentCenter;

在应用链接时无法正常工作.我希望标签对齐中心的长度如下所示.

如果它是正常的TTTAttribute标签而没有应用链接,那么默认的对齐属性正确应用..

这是我用来添加链接的代码..

 - (void)viewDidLoad
    {
        [super viewDidLoad];
        NSRange matchRange;
        NSString *tweet = @"#MYTWEET ,#tweet, #fashion #Share";

        NSScanner *scanner = [NSScanner scannerWithString:tweet];
        if (![scanner scanUpToString:@"#" intoString:nil]) {
            // there is no opening tag
        }
        NSString *result = nil;
        if (![scanner scanUpToString:@" " intoString:&result]) {
            // there is no closing tag
        }
        //@"theString is:%@",result);


        NSArray *words = [tweet componentsSeparatedByString:@" "];

      TTTAttributedLabel *attributedLabel=[[TTTAttributedLabel alloc]initWithFrame:CGRectMake(5, 200, 320, 40)];

      attributedLabel.textAlignment=NSTextAlignmentCenter;

        attributedLabel.text=tweet;

        words = [tweet componentsSeparatedByCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@",0123456789`~!@$%^&*()_-+=.></?;:'* "]];

        for (NSString *word in words)
        {
            if ([word hasPrefix:@"#"])
            {
                //@"word %@",word);

                // Colour your 'word' here
                 matchRange=[tweet rangeOfString:word];

                [attributedLabel addLinkToURL:[NSURL URLWithString:word] withRange:matchRange];

                [tagsarray addObject:word];
            }

        }

        attributedLabel.delegate=self;

       }

    - (void)attributedLabel:(TTTAttributedLabel *)label didSelectLinkWithURL:(NSURL *)url
    {
       //@"result ==== %@",url);

        NSString *webString=[NSString stringWithFormat:@"%@",url];

        NSString *tagstring = [webString stringByReplacingOccurrencesOfString:@"#" withString:@""];
        NSLog(@"Tag String is:%@",tagstring);

        }

我不想调整TTTAttribute标签的框架..

任何建议或帮助将不胜感激..

提前致谢..

Answer 1

您需要使用段落样式集设置链接属性:

NSMutableParagraphStyle* attributeStyle = [[NSMutableParagraphStyle alloc] init];
attributeStyle.alignment = NSTextAlignmentCenter;

NSDictionary *attributes = @{NSFontAttributeName:[UIFont fontWithName:@"Helvetica Neue" size:11], NSForegroundColorAttributeName:[UIColor colorWithRed:0.324 green:0.0 blue:0.580 alpha:1.0], NSParagraphStyleAttributeName:attributeStyle};

[self.atributedLabel setLinkAttributes:attributes];

Answer 2

非常简单，使用以下代码：

attributedLabel.textAlignment = NSTextAlignmentCenter;