在“快速3”中显示文本视图中的属性文本？
在“快速3”中显示文本视图中的属性文本？
提问于 2017-06-06 10:47:23
我想用意大利语显示文本，粗体是从服务器接收的。
< b> hello < /i >< /b >world< /i >< /p > so，
responseObj!["text"] = "<p><b><i>hello</i></b><i>world</></p>"
if let postText:String = responseObj!["text"] as? String{
let str = try NSAttributedString(data: postText.data(using: String.Encoding.unicode, allowLossyConversion: true)!, options: [ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType], documentAttributes: nil)
self.textView.attributedText = str
}当我像这样添加时，意味着我的文本显示正常，而不使用粗体和斜体。我希望文本以粗体、斜体显示。
回答 2
Stack Overflow用户
回答已采纳
发布于 2017-06-08 12:33:31
编辑:更新Swift 4
为extension创建一个String：
extension String {
func htmlAttributedString(fontSize: CGFloat = 17.0) -> NSAttributedString? {
let fontName = UIFont.systemFont(ofSize: fontSize).fontName
let string = self.appending(String(format: "<style>body{font-family: '%@'; font-size:%fpx;}</style>", fontName, fontSize))
guard let data = string.data(using: String.Encoding.utf16, allowLossyConversion: false) else { return nil }
guard let html = try? NSMutableAttributedString (
data: data,
options: [NSAttributedString.DocumentReadingOptionKey.documentType: NSAttributedString.DocumentType.html],
documentAttributes: nil) else { return nil }
return html
}
}在项目中的任何地方调用它：
text.htmlAttributedString() // will set fontSize with 17.0 which is the default value
text.htmlAttributedString(fontSize: 14.0) // pass your required fontSize注意，
let string = self.appending(String(format: "<style>body{font-family: '%@'; font-size:%fpx;}</style>", fontName, fontSize))用于保持字符串字体与默认iOS平台中使用的字体相同。
要在UITextView上设置字符串，请使用：
textView.attributedText = textToBeConverted.htmlAttributedString() ?? ""结果：
Stack Overflow用户
发布于 2017-06-06 10:57:43
从下面的函数中将属性文本分配给UITextView，
//HTML to Attributed text
func stringFromHtml(string: String) -> NSAttributedString? {
do {
let data = string.data(using: String.Encoding.utf8, allowLossyConversion: true)
if let d = data {
let str = try NSAttributedString(data: d,
options: [NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType],
documentAttributes: nil)
return str
}
} catch {
}
return nil
}
//This will give you attributed text which you have to assign to your UITextView. and whatever string having html tag that you have to pass inside this function.
//Below code will conver attributed text to HTML Text
//Attributed to HTML text
let attrStr = self.txtView.attributedText
let documentAttributes = [NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType]
do {
let htmlData = try attrStr?.data(from: NSMakeRange(0, (attrStr?.length)!), documentAttributes:documentAttributes)
if let htmlString = String(data:htmlData!, encoding:String.Encoding.utf8) {
print(htmlString)
}
}
catch {
print("error creating HTML from Attributed String")
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/44387939
复制相关文章
相似问题
腾讯云开发者
