TextView中添加链接，点击启动另一个Activity

public class TestLinkActivity extends Activity {
private TextView tv;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

tv = new TextView(this);
tv.setClickable(false);

String htmlLinkText = "<a href=\"测试\">link</a> specified via an <a> tag.";
// 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
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 class MyURLSpan extends ClickableSpan {
private String mUrl;
MyURLSpan(String url) {
mUrl = url;
}

@Override
public void onClick(View widget) {
Toast.makeText(TestLinkActivity.this, mUrl, Toast.LENGTH_LONG).show();
widget.setBackgroundColor(Color.parseColor("#00000000"));

Intent intent = new Intent(TestLinkActivity.this, TestActivity2.class);
startActivity(intent);

}
}
}

TextView是用来显示文本的，有时需要给TextView中的个别字设置为超链接，或者设置个别字的颜色、字体等，那就需要用到Spannable对象，可以借助Spannable对象实现以上设置

myTextView = (TextView) this.findViewById(R.id.myTextView);

//创建一个 SpannableString对象
SpannableString sp = new SpannableString("这句话中有百度超链接,有高亮显示，这样，或者这样，还有斜体.");
//设置超链接
sp.setSpan(new URLSpan("http://www.baidu.com"), 5, 7,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
//设置高亮样式一
sp.setSpan(new BackgroundColorSpan(Color.RED), 17 ,19,Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
//设置高亮样式二
sp.setSpan(new ForegroundColorSpan(Color.YELLOW),20,24,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
//设置斜体
sp.setSpan(new StyleSpan(android.graphics.Typeface.BOLD_ITALIC), 27, 29, Spannable.SPAN_EXCLUSIVE_INCLUSIVE);
//SpannableString对象设置给TextView
myTextView.setText(sp);
//设置TextView可点击
myTextView.setMovementMethod(LinkMovementMethod.getInstance());