关于TextView文字下划线

<img src="https://img-blog.csdn.net/20151208143036732?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />package com.pry.textviewdemo;

import android.app.Activity;
import android.os.Bundle;
import android.text.Html;
import android.widget.TextView;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//初始化控件
TextView tv = (TextView) findViewById(R.id.tv);
//设置文字下划线
tv.setText(Html.fromHtml("<u>hello world</u>"));

<span style="white-space:pre">		</span>/*

<span style="white-space:pre">		tv.getPaint().setFlags(Paint. UNDERLINE_TEXT_FLAG ); //下划线<span style="white-space:pre">		</span>tv.getPaint().setAntiAlias(true);//抗锯齿</span>

<span style="white-space:pre">		</span>*/}}

<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" ><TextViewandroid:id="@+id/tv"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerInParent="true"android:text="@string/hello_world" /></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><resources><string name="hello_world"><u>hello world</u></string><img src="https://img-blog.csdn.net/20151208143036732?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" /></resources>