Question

我正在创建具有标签的iOS应用。我想设置两种颜色。一个用于第一部分，另一个用于剩余部分我在Stack over flow中看到了一些消息，TTTAttributedLabel能够为文本设置多种颜色。我的文字就像“ABC＆gt; def”。对于“ABC”，我想设置棕色和“def”，我想设置白色我该怎么设置呢？

Answer 1

NSString* text = @"ABC > def";
attributedLabel = [[[TTTAttributedLabel alloc] initWithFrame:frame] autorelease];
attributedLabel.numberOfLines = 0;
attributedLabel.lineBreakMode = UILineBreakModeWordWrap;
attributedLabel.fontColor = [UIColor brownColor];
[attributedLabel setText:text afterInheritingLabelAttributesAndConfiguringWithBlock:^(NSMutableAttributedString *mutableAttributedString) {
    NSRange whiteRange = [text rangeOfString:@"def"];
    if (whiteRange.location != NSNotFound) {
    // Core Text APIs use C functions without a direct bridge to UIFont. See Apple's "Core Text Programming Guide" to learn how to configure string attributes.
        [mutableAttributedString addAttribute:(NSString *)kCTForegroundColorAttributeName value:(id)[UIColor whiteColor].CGColor range:whiteRange];
    }

    return mutableAttributedString;
}];

[attributedLabel sizeToFit]; //this may not be needed if the frame provided is large enough

在字符串中搜索“def”，并将该范围内文本的前景色设置为白色。希望这可以帮助。我昨天才刚刚学会了这个。在试图为自己解决问题时遇到了你的问题。

Answer 2

您可以在https://github.com/kwent/TTTRegexAttributedLabel使用TTTRegexAttributedLabel。（基于TTTAttributedLabel，但更容易使用正则表达式）

  //SET FONT ONLY ON FIRST MATCH REGEX
  TTTRegexAttributedLabel *label = [[TTTRegexAttributedLabel alloc] init];
  label.textColor = [UIColor whiteColor];
  NSString *s = @"ABC > def";
  [self.label setText:s withFirstMatchRegex:@"^[a-zA-Z ]*>"
                        withFont:[UIFont systemFontOfSize:12]
                        withColor:[UIColor brownColor]];

iOS - 使用TTTAttributedLabel设置两个颜色文本

2 个答案: