Android TextViewに下線を付ける方法

http://www.jb51.net/article/43375.htm
http://blog.csdn.net/caiyunfreedom/article/details/6763834
リソースファイルには、このように書くことができます.

<resources>
    <string name="hello"><u>phone: 1390123456</u></string>
    <string name="app_name">MyLink</string>
</resources>

コード:

public class AtActivity extends Activity {

LinearLayout ll;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        ll=(LinearLayout)findViewById(R.id.ll);
        TextView tv=new TextView(this);

        tv.getPaint().setFlags(Paint.UNDERLINE_TEXT_FLAG);//   
        tv.setText("           ");
        tv.setTextColor(Color.WHITE);
        ll.addView(tv);

        tv=new TextView(this);
        tv.setText(Html.fromHtml("<u>  html       </u>"));
        ll.addView(tv);

    }
}

ハイパーリンクスタイルの設定:デフォルトのハイパーリンクは青で、前景の赤に設定します.

public class AtActivity extends Activity {

LinearLayout ll;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        ll=(LinearLayout)findViewById(R.id.ll);
        TextView tv=new TextView(this);


        tv.setText(Html.fromHtml("<a href=\"http://blog.csdn.net/CAIYUNFREEDOM\">         </a>"));
        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){     
                  URLSpan myURLSpan=   new  URLSpan(url.getURL());                        
                 style.setSpan(myURLSpan,sp.getSpanStart(url),sp.getSpanEnd(url),Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);  
                     style.setSpan(new ForegroundColorSpan(Color.RED), sp.getSpanStart(url), sp.getSpanEnd(url), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);//        
               } 
               tv.setText(style);   
        }

        ll.addView(tv);

        tv=new TextView(this);
        tv.setText(Html.fromHtml("<a href=\"http://blog.csdn.net/CAIYUNFREEDOM\">        </a>"));
        tv.setMovementMethod(LinkMovementMethod.getInstance());  
        ll.addView(tv);

    }
}