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android TextView中超链接的事件捕捉

2013-09-16 13:43 507 查看

Java代码

package com.cm;

import java.util.ArrayList;

import
android.R.color;

import
android.app.Activity;

import android.content.Context;

import android.graphics.Color;

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 TextHtml extends Activity {

private
TextView tv;

private static Context ctx;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

tv = new TextView(this);

ctx = this;

String htmlLinkText = "我是超链接"+ "<a style=\"color:red;\" href='lianjie'>超链接点击事件</a>";

// 文字的样式（style）被覆盖，不能改变……

tv.setText(Html.fromHtml(htmlLinkText));

tv.setMovementMethod(LinkMovementMethod.getInstance());

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

//循环把链接发过去

for (URLSpan url : urls) {

MyURLSpan myURLSpan = new MyURLSpan(url.getURL());

style.setSpan(myURLSpan, sp.getSpanStart(url),

sp.getSpanEnd(url), Spannable.SPAN_EXCLUSIVE_INCLUSIVE);

}

tv.setText(style);

}

setContentView(tv);

}

private static class MyURLSpan extends ClickableSpan {

private String mUrl;

MyURLSpan(String url) {

mUrl = url;

}

@Override

public void onClick(View widget) {

if(mUrl .equal(lianjie)){

Toast.makeText(ctx, mUrl, Toast.LENGTH_LONG).show();

widget.setBackgroundColor(Color.parseColor("#00000000"));

}

}

}

}

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