Khu*_*boo 42 html xcode text uilabel
我从Web服务获得HTML响应以下是我收到的HTML响应
<p><strong>Topic</strong>Gud mrng.</p>
\n<p><strong>Hello Everybody</strong>: How are you.</p>
\n<p><strong>I am fine</strong>: 1 what about you.</p>
我需要在UILabel中显示文本.
请帮忙
Pau*_*ell 95
您可以使用属性文本在没有任何第三方库的情况下执行此操作.我相信它确实接受HTML片段,就像你得到的那样,但是你可能希望将它包装在一个完整的HTML文档中,以便你可以指定CSS:
static NSString *html =
@"<html>"
" <head>"
" <style type='text/css'>"
" body { font: 16pt 'Gill Sans'; color: #1a004b; }"
" i { color: #822; }"
" </style>"
" </head>"
" <body>Here is some <i>formatting!</i></body>"
"</html>";
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 300, 200)];
NSError *err = nil;
label.attributedText =
[[NSAttributedString alloc]
initWithData: [html dataUsingEncoding:NSUTF8StringEncoding]
options: @{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType }
documentAttributes: nil
error: &err];
if(err)
NSLog(@"Unable to parse label text: %@", err);
不简洁,但你可以通过向UILabel添加一个类别来消除混乱:
@implementation UILabel (Html)
- (void) setHtml: (NSString*) html
{
NSError *err = nil;
self.attributedText =
[[NSAttributedString alloc]
initWithData: [html dataUsingEncoding:NSUTF8StringEncoding]
options: @{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType }
documentAttributes: nil
error: &err];
if(err)
NSLog(@"Unable to parse label text: %@", err);
}
@end
...
[someLabel setHtml:@"Be <b>bold!</b>"];
Swa*_*ati 15
使用RTLabel库转换HTML文本.我已经好几次使用它了.有用.这是图书馆的链接和示例代码.
https://github.com/honcheng/RTLabel.
希望我帮忙.
小智 13
Swift 4:版本
extension String {
func htmlAttributedString() -> NSAttributedString? {
guard let data = self.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
}
}
Swift 3:版本
extension String {
func htmlAttributedString() -> NSAttributedString? {
guard let data = self.data(using: String.Encoding.utf16, allowLossyConversion: false) else { return nil }
guard let html = try? NSMutableAttributedString(
data: data,
options: [NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType],
documentAttributes: nil) else { return nil }
return html
}
}
Swift 2:版本
extension String {
func htmlAttributedString() -> NSAttributedString? {
guard let data = self.dataUsingEncoding(NSUTF16StringEncoding, allowLossyConversion: false) else { return nil }
guard let html = try? NSMutableAttributedString(
data: data,
options: [NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType],
documentAttributes: nil) else { return nil }
return html
}
}
用它作为:
label.attributedText = yourStringVar.htmlAttributedString()
我宁愿建议使用失败的便利性init扩展NSAttributedString。String本质上不负责制作NSAttributedString。
extension NSAttributedString {
convenience init?(html: String) {
guard let data = html.data(using: String.Encoding.unicode, allowLossyConversion: false) else {
return nil
}
guard let attributedString = try? NSAttributedString(data: data, options: [NSAttributedString.DocumentReadingOptionKey.documentType: NSAttributedString.DocumentType.html], documentAttributes: nil) else {
return nil
}
self.init(attributedString: attributedString)
}
}
label.attributedText = NSAttributedString(html: "<span> Some <b>bold</b> and <a href='#/userProfile/uname'> Hyperlink </a> and so on </span>")