SpannableString word = new SpannableString("The quick fox jumps over the lazy dog");

SpannableStringBuilder multiWord = new SpannableStringBuilder();
multiWord.append("The Quick Fox");
multiWord.append("jumps over");
multiWord.append("the lazy dog");

/**
 * Set the style span to Spannable, such as SpannableString or SpannableStringBuilder
 * @param what --- the style span, such as StyleSpan
 * @param start --- the starting index of characters to which the style span to apply
 * @param end --- the ending index of characters to which the style span to apply
 * @param flags --- the flag specified to control
 */
setSpan(Object what, int start, int end, int flags);

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:orientation="vertical">
  <ScrollView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">
        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">
              <TextView
                android:id="@+id/text_view_font_1"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                />
              <TextView
                android:id="@+id/text_view_font_2"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                />
              <TextView
                android:id="@+id/text_view_font_3"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                />
              <TextView
                android:id="@+id/text_view_font_4"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                />
              <TextView
                android:id="@+id/text_view_font_5"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                />
       </LinearLayout>
    </ScrollView>
</LinearLayout>

package com.android.effective;



import java.util.regex.Matcher;

import java.util.regex.Pattern;



import android.app.Activity;

import android.graphics.Color;

import android.graphics.Typeface;

import android.os.Bundle;

import android.text.Spannable;

import android.text.SpannableString;

import android.text.SpannableStringBuilder;

import android.text.style.AbsoluteSizeSpan;

import android.text.style.BackgroundColorSpan;

import android.text.style.ForegroundColorSpan;

import android.text.style.QuoteSpan;

import android.text.style.RelativeSizeSpan;

import android.text.style.ScaleXSpan;

import android.text.style.StrikethroughSpan;

import android.text.style.StyleSpan;

import android.text.style.TypefaceSpan;

import android.text.style.URLSpan;

import android.text.util.Linkify;

import android.widget.TextView;



public class TextViewFontActivity extends Activity {

    @Override

    public void onCreate(Bundle bundle) {

        super.onCreate(bundle);

        setContentView(R.layout.textview_font_1);

        

        // Demonstration of basic SpannableString and spans usage
        final TextView textWithString = (TextView) findViewById(R.id.text_view_font_1);

        String w = "The quick fox jumps over the lazy dog";

        int start = w.indexOf('q');

        int end = w.indexOf('k') + 1;

        Spannable word = new SpannableString(w);

        word.setSpan(new AbsoluteSizeSpan(22), start, end, 

                Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        word.setSpan(new StyleSpan(Typeface.BOLD), start, end, 

                Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        word.setSpan(new BackgroundColorSpan(Color.RED), start, end, 

                Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        textWithString.setText(word);

        

        // Demonstration of basic SpannableStringBuilder and spans usage
        final TextView textWithBuilder = (TextView) findViewById(R.id.text_view_font_2);

        SpannableStringBuilder word2 = new SpannableStringBuilder();

        final String one = "Freedom is nothing but a chance to be better!";

        final String two = "The quick fox jumps over the lazy dog!";

        final String three = "The tree of liberty must be refreshed from time to time with " +

                "the blood of patroits and tyrants!";

        word2.append(one);

        start = 0;

        end = one.length();

        word2.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);



        word2.append(two);

        start = end;

        end += two.length();

        word2.setSpan(new ForegroundColorSpan(Color.CYAN), start, end, 

                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

        word2.append(three);

        start = end;

        end += three.length();

        word2.setSpan(new URLSpan(three), start, end, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

        textWithBuilder.setText(word2);

        

        // Troubleshooting when using SpannableStringBuilder
        final TextView textTroubles = (TextView) findViewById(R.id.text_view_font_3);

        SpannableStringBuilder word3 = new SpannableStringBuilder();

        start = 0;

        end = one.length();

        // Caution: must first append or set text to SpannableStringBuilder or SpannableString

        // then set the spans to them, otherwise, IndexOutOfBoundException is thrown when setting spans
        word3.append(one);

        // For AbsoluteSizeSpan, the flag must be set to 0, otherwise, it will apply this span to until end of text
        word3.setSpan(new AbsoluteSizeSpan(22), start, end, 0);//Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        // For BackgroundColorSpanSpan, the flag must be set to 0, otherwise, it will apply this span to end of text
        word3.setSpan(new BackgroundColorSpan(Color.DKGRAY), start, end, 0); //Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        word3.append(two);

        start = end;

        end += two.length();

        word3.setSpan(new TypefaceSpan("sans-serif"), start, end, 

                Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        // TODO: sometimes, flag must be set to 0, otherwise it will apply the span to until end of text

        // which MIGHT has nothing to do with specific span type.
        word3.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), start, end, 0);//Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        word3.setSpan(new ScaleXSpan(0.618f), start, end, Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        word3.setSpan(new StrikethroughSpan(), start, end, 0);//Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        word3.setSpan(new ForegroundColorSpan(Color.CYAN), start, end, Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        word3.setSpan(new QuoteSpan(), start, end, 0); //Spannable.SPAN_INCLUSIVE_INCLUSIVE);
        word3.append(three);

        start = end;

        end += three.length();

        word3.setSpan(new RelativeSizeSpan((float) Math.E), start, end, Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        word3.setSpan(new ForegroundColorSpan(Color.BLUE), start, end, Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        textTroubles.setText(word3);

        

        // Highlight some patterns
        final String four = "The gap between the best software engineering " +

                "practice and the average practice is very wide¡ªperhaps wider " +

                " than in any other engineering discipline. A tool that disseminates " +

                "good practice would be important.¡ªFred Brooks";

        final Pattern highlight = Pattern.compile("the");

        final TextView textHighlight = (TextView) findViewById(R.id.text_view_font_4);

        SpannableString word4 = new SpannableString(four);

        Matcher m = highlight.matcher(word4.toString());

        while (m.find()) {

            word4.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), m.start(), m.end(), 

                    Spannable.SPAN_INCLUSIVE_INCLUSIVE);

            word4.setSpan(new ForegroundColorSpan(Color.RED), m.start(), m.end(), 

                    Spannable.SPAN_INCLUSIVE_INCLUSIVE);

            word4.setSpan(new StrikethroughSpan(), m.start(), m.end(), 

                    Spannable.SPAN_INCLUSIVE_INCLUSIVE);

        }

        textHighlight.setText(word4);

        

        // Set numbers, URLs and E-mail address to be clickable with TextView#setAutoLinkMask
        final TextView textClickable = (TextView) findViewById(R.id.text_view_font_5);  

        final String contact = "Email: mvp@microsoft.com\n" +

                "Phone: +47-24885883\n" +

                "Fax: +47-24885883\n" +

                "HTTP: www.microsoft.com/mvp.asp";

        // Set the attribute first, then set the text. Otherwise, it won't work
        textClickable.setAutoLinkMask(Linkify.ALL); // or set 'android:autoLink' in layout xml
        textClickable.setText(contact);
    }
}

TextView textView = (TextView)findViewById(R.id.textview);

//方法一：textView.setText(Html.fromHtml("<font color=\"#ff0000\">红色</font>其它颜色"));

//方法二： String text = "获得银宝箱!";
 SpannableStringBuilder style=new SpannableStringBuilder(text);   
  style.setSpan(new BackgroundColorSpan(Color.RED),2,5,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);     //设置指定位置textview的背景颜色  style.setSpan(new ForegroundColorSpan(Color.RED),0,2,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);     //设置指定位置文字的颜色  textView.setText(style); 

 String text = String.format(getResources().getString(R.string.baoxiang), 2,18,"银宝箱");

<string name="baoxiang">您今天打了%1$d局,还差%2$d局可获得%3$s!</string>

TextView textView = (TextView)findViewById(R.id.testview);

String text = String.format(getResources().getString(R.string.baoxiang), 2,18,"银宝箱");
       int index[] = new int[3];
       index[0] = text.indexOf("2");
       index[1] = text.indexOf("18");
       index[2] = text.indexOf("银宝箱");

 SpannableStringBuilder style=new SpannableStringBuilder(text);   
           style.setSpan(new ForegroundColorSpan(Color.RED),index[0],index[0]+1,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);    
           style.setSpan(new ForegroundColorSpan(Color.RED),index[1],index[1]+2,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);    
           style.setSpan(new BackgroundColorSpan(Color.RED),index[2],index[2]+3,Spannable.SPAN_EXCLUSIVE_INCLUSIVE);    
           textView.setText(style);