TextView 处理超链接

测试链接与跳转实现

最新推荐文章于 2024-07-15 02:47:01 发布

转载最新推荐文章于 2024-07-15 02:47:01 发布 · 561 阅读

Android 专栏收录该内容

471 篇文章

订阅专栏

本文介绍了如何在Android应用中创建包含多个链接的文本视图，并实现点击跳转功能。

package com.su.testlink;
 
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.text.Html;
import android.text.Spannable;
import android.text.SpannableStringBuilder;
import android.text.method.LinkMovementMethod;
import android.text.style.ClickableSpan;
import android.text.style.URLSpan;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
 
public class TestLinkActivity extends Activity {
        /** Called when the activity is first created. */
        private TextView tv;
        static Context ctx = null;
 
        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.main);
                ctx = this;
                tv = (TextView) findViewById(R.id.tv);
                String htmlLinkText =
                                "<a href=http://www.sohu.com/><u>测试 </u></a><br/>" +
                                "<a href=http://wwwdd.com/><u> 测试1 </u></a><br/>" +
                                "<a href=http://wwdfd.com/><u>测试2 </u></a><br/>" +
                                "<a href=http://wdfdww.baidu.com/><u>测试3 </u></a><br/>";
                tv.setText(Html.fromHtml(htmlLinkText));
 
                tv.setMovementMethod(LinkMovementMethod.getInstance());
 
                addLink(tv);
        }
 
        private void addLink(TextView tv) {
                CharSequence text = tv.getText();
                if (text instanceof Spannable) {
                        int end = text.length();
                        Spannable sp = (Spannable) tv.getText();
                        URLSpan[] urls = sp.getSpans(0, end, URLSpan.class);
                        SpannableStringBuilder style = new SpannableStringBuilder(text);
                        style.clearSpans();// should clear old spans
                        for (URLSpan url : urls) {
                                MyURLSpan myURLSpan = new MyURLSpan(url.getURL());
                                style.setSpan(myURLSpan, sp.getSpanStart(url),
                                                sp.getSpanEnd(url), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                        }
                        tv.setText(style);
                }
        }
 
        private static class MyURLSpan extends ClickableSpan {
 
                private String mUrl;
 
                MyURLSpan(String url) {
                        mUrl = url;
                }
 
                @Override
                public void onClick(View widget) {
                        // TODO Auto-generated method stub
                        Toast.makeText(ctx, "hello!" + mUrl, Toast.LENGTH_LONG).show();
                }
        }
}