一丶Java代码中实现
<img src="https://img-blog.youkuaiyun.com/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>*/
}
}
二丶Xml文件中实现
<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/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.youkuaiyun.com/20151208143036732?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQv/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />
</resources>