SpannableString用法

spannableString是为TextView添加特殊的效果：

package com.example.spannablestring;

import java.io.IOException;

import org.xmlpull.v1.XmlPullParserException;

import android.app.Activity;

import android.content.res.ColorStateList;

import android.content.res.XmlResourceParser;

import android.graphics.Color;

import android.graphics.drawable.Drawable;

import android.os.Bundle;

import android.text.SpannableString;

import android.text.Spanned;

import android.text.method.LinkMovementMethod;

import android.text.style.AbsoluteSizeSpan;

import android.text.style.BackgroundColorSpan;

import android.text.style.BulletSpan;

import android.text.style.ForegroundColorSpan;

import android.text.style.ImageSpan;

import android.text.style.RelativeSizeSpan;

import android.text.style.ScaleXSpan;

import android.text.style.StrikethroughSpan;

import android.text.style.StyleSpan;

import android.text.style.SubscriptSpan;

import android.text.style.SuperscriptSpan;

import android.text.style.TextAppearanceSpan;

import android.text.style.TypefaceSpan;

import android.text.style.URLSpan;

import android.text.style.UnderlineSpan;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.TextView;

public class MainActivity extends Activity {

TextView mTextView=null;

SpannableString msp=null;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

mTextView=(TextView)findViewById(R.id.mTextView);

msp=new SpannableString("字体测试字体大小一半两倍前景色背景色正常粗体斜体粗斜体下划线删除线x1x2电话邮件网站短信彩信地图X轴综合/bot");

msp.setSpan(new TypefaceSpan("monospace"), 0, 2, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new TypefaceSpan("serif"), 2, 4, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new AbsoluteSizeSpan(20), 4, 6, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new AbsoluteSizeSpan(20,true), 6, 8, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new RelativeSizeSpan(0.5f), 8, 10, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);//设置字体的大小，是默认字体的多少倍。

msp.setSpan(new RelativeSizeSpan(2.0f), 10, 12, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new ForegroundColorSpan(Color.MAGENTA), 12, 15, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new BackgroundColorSpan(Color.CYAN), 15, 18, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

//设置字体样式（正常，斜体，粗体，粗斜体）

msp.setSpan(new StyleSpan(android.graphics.Typeface.NORMAL), 18, 20, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new StyleSpan(android.graphics.Typeface.BOLD), 20, 22, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new StyleSpan(android.graphics.Typeface.ITALIC), 22, 24, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new StyleSpan(android.graphics.Typeface.BOLD_ITALIC), 24, 27, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

//设置下划线

msp.setSpan(new UnderlineSpan(), 27, 30, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

//设置删除线

msp.setSpan(new StrikethroughSpan(), 30, 33, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

//设置上下标

msp.setSpan(new SubscriptSpan(), 34, 35, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new SuperscriptSpan(), 36, 37, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

//超链接

msp.setSpan(new URLSpan("tel:4155551212"), 37, 39, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new URLSpan("mailto:webmaster@google.com"), 39, 41, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new URLSpan("http://www.baidu.com"), 41, 43, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new URLSpan("sms:4155551212"), 43, 45, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new URLSpan("mms:4155551212"), 45, 47, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new URLSpan("geo:38.899533,-77.036476"), 47, 49, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

//设置字体大小 参数表示为默认字体宽度的多少倍。

msp.setSpan(new ScaleXSpan(2.0f), 49, 51, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

//设置字体（依次包括字体名称，字体大小，字体样式，字体颜色，链接颜色）

ColorStateList csllink=null;

ColorStateList csl=null;

XmlResourceParser xppcolor=getResources().getXml(R.color.linkcolor);

try {

csl=ColorStateList.createFromXml(getResources(), xppcolor);

} catch (XmlPullParserException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

msp.setSpan(new TextAppearanceSpan("monospace",android.graphics.Typeface.BOLD_ITALIC, 30, csl, csllink), 51, 53, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

msp.setSpan(new BulletSpan(android.text.style.BulletSpan.STANDARD_GAP_WIDTH,Color.GREEN), 0 ,msp.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); //第一个参数表示项目符号占用的宽度，第二个参数为项目符号的颜色

//设置图片

Drawable drawable = getResources().getDrawable(R.drawable.ic_launcher);

drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());

msp.setSpan(new ImageSpan(drawable), 53, 57, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

mTextView.setText(msp);

mTextView.setMovementMethod(LinkMovementMethod.getInstance());

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

// Handle action bar item clicks here. The action bar will

// automatically handle clicks on the Home/Up button, so long

// as you specify a parent activity in AndroidManifest.xml.

int id = item.getItemId();

if (id == R.id.action_settings) {

return true;

}

return super.onOptionsItemSelected(item);

}

}

下面就是这样 的图像：