103

我正在使用两个textview来显示数据库中的链接，我设法更改了链接颜色，但我想删除下划线

email.setText(c.getString(5));
    website.setText(c.getString(6));
    Linkify.addLinks(email, Linkify.ALL);
    Linkify.addLinks(website, Linkify.ALL);

我可以从 XML 或 Code 做到这一点吗？

4

12 回答 12

235

您可以在代码中通过查找URLSpan实例并将其替换为不带下划线的版本来实现。调用后，调用粘贴在每个s 上Linkify.addLinks()的函数：stripUnderlines()TextView

    private void stripUnderlines(TextView textView) {
        Spannable s = new SpannableString(textView.getText());
        URLSpan[] spans = s.getSpans(0, s.length(), URLSpan.class);
        for (URLSpan span: spans) {
            int start = s.getSpanStart(span);
            int end = s.getSpanEnd(span);
            s.removeSpan(span);
            span = new URLSpanNoUnderline(span.getURL());
            s.setSpan(span, start, end, 0);
        }
        textView.setText(s);
    }

这需要一个自定义版本的 URLSpan，它不启用 TextPaint 的“下划线”属性：

    private class URLSpanNoUnderline extends URLSpan {
        public URLSpanNoUnderline(String url) {
            super(url);
        }
        @Override public void updateDrawState(TextPaint ds) {
            super.updateDrawState(ds);
            ds.setUnderlineText(false);
        }
    }
于 2010-12-16T17:18:49.097 回答
36

给定一个 textView 和内容：

TextView textView = (TextView) findViewById(R.id.your_text_view_id);
String content = "your <a href='http://some.url'>html</a> content";

这是从超链接中删除下划线的简洁方法：

Spannable s = (Spannable) Html.fromHtml(content);
for (URLSpan u: s.getSpans(0, s.length(), URLSpan.class)) {
    s.setSpan(new UnderlineSpan() {
        public void updateDrawState(TextPaint tp) {
            tp.setUnderlineText(false);
        }
    }, s.getSpanStart(u), s.getSpanEnd(u), 0);
}
textView.setText(s);

这是基于 robUx4 建议的方法。

为了使链接可点击，您还需要调用：

textView.setMovementMethod(LinkMovementMethod.getInstance());
于 2013-10-02T09:26:05.923 回答
16

这是Kotlin扩展功能：

fun TextView.removeLinksUnderline() {
    val spannable = SpannableString(text)
    for (u in spannable.getSpans(0, spannable.length, URLSpan::class.java)) {
        spannable.setSpan(object : URLSpan(u.url) {
            override fun updateDrawState(ds: TextPaint) {
                super.updateDrawState(ds)
                ds.isUnderlineText = false
            }
        }, spannable.getSpanStart(u), spannable.getSpanEnd(u), 0)
    }
    text = spannable
}

用法：

txtView.removeLinksUnderline()
于 2020-04-07T14:46:04.257 回答
11

UnderlineSpan已经存在，但只能设置下划线。

另一种解决方案是在每个现有的URLSpan. 因此，下划线状态在绘画之前被禁用。这样，您可以将URLSpan（可能是自定义的）类和所有其他样式设置在其他地方。

public class NoUnderlineSpan extends UnderlineSpan {
    public NoUnderlineSpan() {}

    public NoUnderlineSpan(Parcel src) {}

    @Override
    public void updateDrawState(TextPaint ds) {
        ds.setUnderlineText(false);
    }
}

这是在不删除现有 URLSpan 对象的情况下设置它的方法：

URLSpan[] spans = s.getSpans(0, s.length(), URLSpan.class);
for (URLSpan span: spans) {
    int start = s.getSpanStart(span);
    int end = s.getSpanEnd(span);
    NoUnderlineSpan noUnderline = new NoUnderlineSpan();
    s.setSpan(noUnderline, start, end, 0);
}
于 2013-06-11T11:36:33.433 回答
5

我已经实现了一个解决方案，在我看来，它更优雅。我做了一个自定义TextView。这样您就不需要为每个TextView带有超链接的代码执行额外的代码。 

package com.example.view;

import android.content.Context;
import android.support.v7.widget.AppCompatTextView;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.style.URLSpan;
import android.util.AttributeSet;

import com.example.utils.UrlSpanNoUnderline;

public class TextViewNoUnderline extends AppCompatTextView {
    public TextViewNoUnderline(Context context) {
        this(context, null);
    }

    public TextViewNoUnderline(Context context, AttributeSet attrs) {
        this(context, attrs, android.R.attr.textViewStyle);
    }

    public TextViewNoUnderline(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        setSpannableFactory(Factory.getInstance());
    }

    private static class Factory extends Spannable.Factory {
        private final static Factory sInstance = new Factory();

        public static Factory getInstance() {
            return sInstance;
        }

        @Override
        public Spannable newSpannable(CharSequence source) {
            return new SpannableNoUnderline(source);
        }
    }

    private static class SpannableNoUnderline extends SpannableString {
        public SpannableNoUnderline(CharSequence source) {
            super(source);
        }

        @Override
        public void setSpan(Object what, int start, int end, int flags) {
            if (what instanceof URLSpan) {
                what = new UrlSpanNoUnderline((URLSpan) what);
            }
            super.setSpan(what, start, end, flags);
        }
    }
}

UrlSpanNoUnderline 的代码：

package com.jankstudios.smmagazine.utils;

import android.text.TextPaint;
import android.text.style.URLSpan;

public class UrlSpanNoUnderline extends URLSpan {
    public UrlSpanNoUnderline(URLSpan src) {
        super(src.getURL());
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        super.updateDrawState(ds);
        ds.setUnderlineText(false);
    }
}
于 2015-11-06T10:32:57.053 回答
2

无论何时，尝试使用 spannable删除 URL 下划线，我只建议以下内容：

1>创建自定义类：

private class URLSpanNoUnderline extends URLSpan {
            public URLSpanNoUnderline(String url) {
                super(url);
            }
            @Override public void updateDrawState(TextPaint ds) {
                super.updateDrawState(ds);
                ds.setUnderlineText(false);
            }
        }

这需要自定义版本的URLSpan，它不启用 TextPaint 的“下划线”属性

2>带有可跨文本的 setSpan ：

spannableText.setSpan(new URLSpanNoUnderline(UrlText), 0, UrlText.length() , 0);

这里，spannableText是SpannableString的对象...！！！

于 2015-01-13T09:05:13.103 回答
2

如果您正在使用 Textview 自动链接属性并且想要删除下划线，您可以使用它：

首先，扩展 UnderlineSpan 并删除下划线：

public class NoUnderlineSpan extends UnderlineSpan {

    @Override
    public void updateDrawState(TextPaint ds) {
        ds.setUnderlineText(false);
    }
}

其次，创建NoUnderlineSpan的实例，从String文本创建一个Spannable并将span设置为spannable：

NoUnderlineSpan mNoUnderlineSpan = new NoUnderline();
if (yourTextView.getText() instanceof Spannable) {
    Spannable s = (Spannable) yourTextView.getText();
    s.setSpan(mNoUnderlineSpan, 0, s.length(), Spanned.SPAN_MARK_MARK);
}

参考： http: //prog3.com/sbdm/blog/maosidiaoxian/article/details/39156563

于 2017-05-17T17:07:21.783 回答
0 
public void setView()
{
TextView t=(TextView) findViewById(R.id.textView3);
        t.setText(Html.fromHtml("<a href=http://www.urdusms.net > UrduSMS "));
        t.setTextColor(Color.BLACK);
        t.setGravity(Gravity.CENTER);
        t.setMovementMethod(LinkMovementMethod.getInstance());

         Spannable s = (Spannable) t.getText();
            URLSpan[] spans = s.getSpans(0, s.length(), URLSpan.class);
            for (URLSpan span: spans) {
                int start = s.getSpanStart(span);
                int end = s.getSpanEnd(span);
                s.removeSpan(span);
                span = new URLSpanline_none(span.getURL());
                s.setSpan(span, start, end, 0);
            }
        t.setText(s);
 }
//inner class is    
private class URLSpanline_none extends URLSpan {
            public URLSpanline_none(String url) {
                super(url);
            }
            @Override public void updateDrawState(TextPaint ds) {
                super.updateDrawState(ds);
                ds.setUnderlineText(false);
            }
        }
于 2015-06-05T07:52:01.023 回答
0

如果您只想要文本而不关心 URL 链接

这将剥离链接但保留文本

private Spannable stripLinks(String content) {
    Spannable s = new SpannableString(content);
    URLSpan[] spans = s.getSpans(0, s.length(), URLSpan.class);
    for (URLSpan span : spans) {
        s.removeSpan(span);
    }

    return s;
}

不需要额外的课程

String content = "<a href='http://stackoverflow.com'>Stack Overflow</a> Rocks!";
textView.setText(stripLinks(content));
于 2016-11-04T07:58:56.520 回答
0

这是我的方法

 public static void removeUnderlines(Spannable p_Text) {
            if (p_Text != null && p_Text.toString().length() > 0) {
                URLSpan[] spans = p_Text.getSpans(0, p_Text.length(), URLSpan.class);

                for (URLSpan span : spans) {
                    int start = p_Text.getSpanStart(span);
                    int end = p_Text.getSpanEnd(span);
                    p_Text.removeSpan(span);
                    span = new URLSpanNoUnderline(span.getURL());
                    p_Text.setSpan(span, start, end, 0);
                }
            }
        }

像这样称呼它

AppController.removeUnderlines((Spannable) eventEmail.getText());

Appcontroller 是我的应用程序类，我把这个方法放在那里，这样我就可以从任何地方访问它

于 2017-07-20T07:53:29.977 回答
0

对于找到这篇文章的 Xamarin 用户，这是我如何让它工作的：

  1. 创建一个自定义跨度类来处理剥离下划线。
    class URLSpanNoUnderline : URLSpan {
            public URLSpanNoUnderline (string url) : base (url) {
            }

            public override void UpdateDrawState (TextPaint ds) {
                base.UpdateDrawState (ds);
                ds.UnderlineText = false;
            }
        }
  1. 创建一个扩展方法来查找所有 url 跨度并将它们替换为我们的自定义跨度。
public static void StripUnderlinesFromLinks (this TextView textView) {
                var spannable = new SpannableStringBuilder (textView.TextFormatted);
                var spans = spannable.GetSpans (0, spannable.Length (), Java.Lang.Class.FromType (typeof (URLSpan)));
                foreach (URLSpan span in spans) {
                    var start = spannable.GetSpanStart (span);
                    var end = spannable.GetSpanEnd (span);
                    spannable.RemoveSpan(span);
                    var newSpan = new URLSpanNoUnderline (span.URL);
                    spannable.SetSpan(newSpan, start, end, 0);
                }
                textView.TextFormatted = spannable;
            }
于 2019-01-09T19:32:55.833 回答
0

这是一个 Kotlin 扩展函数，作为删除所有UrlSpan下划线的解决方案：

private fun Spannable.removeAllUrlSpanUnderline() {
    for (urlSpan in getSpans(0, length, URLSpan::class.java)) {
        setSpan(object : UnderlineSpan() {
            override fun updateDrawState(tp: TextPaint) {
                tp.isUnderlineText = false
            }
        }, getSpanStart(urlSpan), getSpanEnd(urlSpan), 0)
    }
}

In my case, I began with a string with href tags. fromHtml returns a Spanned so cast it to a Spannable so it's mutable. See the sample use below:

val sampleHtmlString = "<a href=\"www.google.com\">first Link</a> and <a href=\"www.google.com\">second link</a>"

val sampleSpannable = HtmlCompat.fromHtml(caslString, HtmlCompat.FROM_HTML_MODE_LEGACY) as Spannable

val sampleSpannableWithoutUnderlines = sampleSpannable.removeAllUrlSpanUnderline()

Now you're free to set sampleSpannableWithoutUnderlines to your TextView

于 2021-08-11T05:31:50.287 回答