我使用两个textview来显示数据库的链接，我设法更改链接颜色，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或代码那样做吗？
您可以通过查找和替换未加下划线的版本的URLSpan实例来在代码中执行此操作。在你调用Linkify.addLinks()之后，在你的每个stripUnderlines()s上调用粘贴在下面的函数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，它不能启用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);
}
}
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);
}
}
给出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";
以下是从超链接中删除下划线的简明方法：
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。
为了使链接可以点击，您还需要调用：
textView.setMovementMethod(LinkMovementMethod.getInstance());
UnderlineSpan已经存在，但只能设置下划线。
另一个解决方案是在每个现有的URLSpan上添加无下划线。因此，在绘画之前禁用下划线状态。这样你就可以保持你的URLSpan（可能是自定义）类和其他所有其他样式。
public class NoUnderlineSpan extends UnderlineSpan {
public NoUnderlineSpan() {}
public NoUnderlineSpan(Parcel src) {}
@Override
public void updateDrawState(TextPaint ds) {
ds.setUnderlineText(false);
}
}
以下是在不删除现有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);
}
无论何时，尝试使用spannable删除URL下划线，我建议只使用以下内容：
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);
}
}
这需要一个自定义版本的URLSpan，它不能启用TextPaint的“下划线”属性
2>带有spannable文本的setSpan：
spannableText.setSpan(new URLSpanNoUnderline(UrlText), 0, UrlText.length() , 0);
这里，spannableText是SpannableString的对象...... !!!
我已经实施了一个解决方案，在我看来，它更优雅。我做了一个定制的TextView。这样您就不需要为每个带有超链接的TextView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);
}
}
}
和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);
}
}
如果您使用的是Textview自动链接属性，并且要删除下划线，则可以使用它：
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和实例，从String文本创建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
如果您只是想要文本而不必担心URL链接
这将STRIP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));
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);
}
}
}
像这样打电话
AppController.removeUnderlines((Spannable) eventEmail.getText());
Appcontroller是我的应用程序类，我把这个方法放在这里，以便我可以从任何地方访问它
对于发现此帖子的Xamarin用户，以下是我如何使用它：
class URLSpanNoUnderline : URLSpan {
public URLSpanNoUnderline (string url) : base (url) {
}
public override void UpdateDrawState (TextPaint ds) {
base.UpdateDrawState (ds);
ds.UnderlineText = false;
}
}
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;
}