如何在uiLabel中同时包含粗体和非粗体文本?
我宁愿不用UIWebView..我也读过这个可能使用NSAttributedString但我不知道如何使用它。什么好主意吗?
苹果在他们的几个应用程序中实现了这一点; 例子截图:
谢谢! ——Dom
如何在uiLabel中同时包含粗体和非粗体文本?
我宁愿不用UIWebView..我也读过这个可能使用NSAttributedString但我不知道如何使用它。什么好主意吗?
苹果在他们的几个应用程序中实现了这一点; 例子截图:
谢谢! ——Dom
当前回答
提供要处理的字符串作为输入,并提供粗体/彩色的单词作为输入。
func attributedString(parentString:String, arrayOfStringToProcess:[String], color:UIColor) -> NSAttributedString
{
let parentAttributedString = NSMutableAttributedString(string:parentString, attributes:nil)
let parentStringWords = parentAttributedString.string.components(separatedBy: " ")
if parentStringWords.count != 0
{
let wordSearchArray = arrayOfStringToProcess.filter { inputArrayIndex in
parentStringWords.contains(where: { $0 == inputArrayIndex }
)}
for eachWord in wordSearchArray
{
parentString.enumerateSubstrings(in: parentString.startIndex..<parentString.endIndex, options: .byWords)
{
(substring, substringRange, _, _) in
if substring == eachWord
{
parentAttributedString.addAttribute(.font, value: UIFont.boldSystemFont(ofSize: 15), range: NSRange(substringRange, in: parentString))
parentAttributedString.addAttribute(.foregroundColor, value: color, range: NSRange(substringRange, in: parentString))
}
}
}
}
return parentAttributedString
}
其他回答
NSString *needToChangeStr=@"BOOK";
NSString *display_string=[NSString stringWithFormat:@"This is %@",book];
NSMutableAttributedString *attri_str=[[NSMutableAttributedString alloc]initWithString:display_string];
int begin=[display_string length]-[needToChangeStr length];
int end=[needToChangeStr length];
[attri_str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"HelveticaNeue-Bold" size:30] range:NSMakeRange(begin, end)];
在这种情况下,你可以尝试,
UILabel *displayLabel = [[UILabel alloc] initWithFrame:/*label frame*/];
displayLabel.font = [UIFont boldSystemFontOfSize:/*bold font size*/];
NSMutableAttributedString *notifyingStr = [[NSMutableAttributedString alloc] initWithString:@"Updated: 2012/10/14 21:59 PM"];
[notifyingStr beginEditing];
[notifyingStr addAttribute:NSFontAttributeName
value:[UIFont systemFontOfSize:/*normal font size*/]
range:NSMakeRange(8,10)/*range of normal string, e.g. 2012/10/14*/];
[notifyingStr endEditing];
displayLabel.attributedText = notifyingStr; // or [displayLabel setAttributedText: notifyingStr];
在UILabel中使文本加粗并加下划线。只需在代码中添加以下行。
NSRange range1 = [lblTermsAndCondition.text rangeOfString:NSLocalizedString(@"bold_terms", @"")];
NSRange range2 = [lblTermsAndCondition.text rangeOfString:NSLocalizedString(@"bold_policy", @"")];
NSMutableAttributedString *attributedText = [[NSMutableAttributedString alloc] initWithString:lblTermsAndCondition.text];
[attributedText setAttributes:@{NSFontAttributeName:[UIFont fontWithName:fontBold size:12.0]}
range:range1];
[attributedText setAttributes:@{NSFontAttributeName:[UIFont fontWithName:fontBold size:12.0]}
range:range2];
[attributedText addAttribute:(NSString*)kCTUnderlineStyleAttributeName
value:[NSNumber numberWithInt:kCTUnderlineStyleSingle]
range:range1];
[attributedText addAttribute:(NSString*)kCTUnderlineStyleAttributeName
value:[NSNumber numberWithInt:kCTUnderlineStyleSingle]
range:range2];
lblTermsAndCondition.attributedText = attributedText;
我刚刚在我的项目中实现的以下代码不需要NSRange(在Swift中):
//Code sets label (yourLabel)'s text to "Tap and hold(BOLD) button to start recording."
let boldAttribute = [
//You can add as many attributes as you want here.
NSFontAttributeName: UIFont(name: "HelveticaNeue-Bold", size: 18.0)!
]
let regularAttribute = [NSFontAttributeName: UIFont(name: "HelveticaNeue-Light", size: 18.0)!]
let beginningAttributedString = NSAttributedString(string: "Tap and ", attributes: regularAttribute )
let boldAttributedString = NSAttributedString(string: "hold ", attributes: boldAttribute)
let endAttributedString = NSAttributedString(string: "button to start recording.", attributes: regularAttribute )
let fullString = NSMutableAttributedString()
fullString.appendAttributedString(beginningAttributedString)
fullString.appendAttributedString(boldAttributedString)
fullString.appendAttributedString(endAttributedString)
yourLabel.attributedText = fullString
如果您希望更容易地使用带属性字符串,请尝试使用带属性字符串创建者,它将为您生成代码。https://itunes.apple.com/us/app/attributed-string-creator/id730928349