textView 下划线

textView1 = (TextView) findViewById(R.id.textView1);
textView1.getPaint().setFlags(Paint.UNDERLINE_TEXT_FLAG);
textView1.getPaint().setAntiAlias(true);// 抗锯齿


promotionLinkText = (TextView) this .findViewById(R.id. text_promotion_link ); 
中间加横线 
promotionLinkText .getPaint().setFlags(Paint. STRIKE_THRU_TEXT_FLAG ); 
底部加横线： 
promotionLinkText .getPaint().setFlags(Paint. UNDERLINE_TEXT_FLAG );