设置TextView中文字的超链接

main.xml如下:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity" >    <TextView        android:id="@+id/textView"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerHorizontal="true"        android:layout_centerVertical="true"        android:text="期望有一天不用写代码也可以吃得起馒头" /></RelativeLayout>

mainActivity如下:

package c.c;import android.app.Activity;import android.os.Bundle;import android.text.Spannable;import android.text.SpannableString;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;/** * Demo描述: * 为TextView中的文字设置链接,当点击此链接的时候执行相应的操作 */public class MainActivity extends Activity {    private TextView mTextView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);init();}    private void init() {    mTextView=(TextView) findViewById(R.id.textView);    String string = mTextView.getText().toString();    addUrlSpan(mTextView, string);    mTextView.setFocusable(true);    mTextView.setMovementMethod(LinkMovementMethod.getInstance());catchUrl(mTextView);}    private class TestSpan extends ClickableSpan {private String url;TestSpan(String url) {this.url = url;}@Overridepublic void onClick(View widget) {if (url.equals("showinfo")) {Toast.makeText(MainActivity.this, "点击了链接", Toast.LENGTH_SHORT).show();System.out.println("执行点击链接后的操作");}}}private void addUrlSpan(TextView tv, String string) {SpannableString spanString = new SpannableString(string);URLSpan span = new URLSpan("showinfo");int start = string.length() - 4;int end = string.length() - 1;spanString.setSpan(span, start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);tv.setText(spanString);}private void catchUrl(TextView textView) {CharSequence text = textView.getText();if (text instanceof Spannable) {int end = text.length();Spannable sp = (Spannable) textView.getText();URLSpan[] urls = sp.getSpans(0, end, URLSpan.class);SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(text);spannableStringBuilder.clearSpans();for (URLSpan url : urls) {TestSpan testSpan = new TestSpan(url.getURL());spannableStringBuilder.setSpan(testSpan, sp.getSpanStart(url),sp.getSpanEnd(url), Spannable.SPAN_EXCLUSIVE_INCLUSIVE);}textView.setText(spannableStringBuilder);}}}