中英文混合排序

好久没有写博客了，期间在做桌面云，被要求保密哈。不过最近在写一个android程序，需要实现一个中英文混合排序。不说了，直接代码；
HanYuUtil.java

import net.sourceforge.pinyin4j.PinyinHelper;
import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType;
import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat;
import net.sourceforge.pinyin4j.format.HanyuPinyinToneType;
import net.sourceforge.pinyin4j.format.HanyuPinyinVCharType;
import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination;

public class HanYuUtil {
	/**
	 * 将单个字符（包括单个汉字或者单个英文字母）转换为小写字母
	 * @param c
	 * @return
	 */
	public String getCharacterPinYin(char c)
	{
		String[] pinyin=null;
		HanyuPinyinOutputFormat format =new HanyuPinyinOutputFormat();
		format.setCaseType(HanyuPinyinCaseType.LOWERCASE);
		format.setToneType(HanyuPinyinToneType.WITHOUT_TONE);//汉字没有声调
		format.setVCharType(HanyuPinyinVCharType.WITH_V);
		try{
			pinyin = PinyinHelper.toHanyuPinyinStringArray(c, format);
		}catch(BadHanyuPinyinOutputFormatCombination e){
			e.printStackTrace();
		}
		// 如果c不是汉字，toHanyuPinyinStringArray会返回null
		if (pinyin == null)
			return ((Character)c).toString().toLowerCase();
		// 只取一个发音，如果是多音字，仅取第一个发音
		return pinyin[0];
	}
	/**
	 * 将包含中英文的字符串以小写英文字母的形式返回
	 * @param str
	 * @return
	 */
	public String getStringPinYin(String str)
	{
		StringBuilder sb = new StringBuilder();
		String tempPinyin = null;
		for (int i = 0; i < str.length(); ++i)
		{
			tempPinyin = getCharacterPinYin(str.charAt(i));
			sb.append(tempPinyin);
		}
		return sb.toString();
	}
}

CustomerComparator.java

import java.util.Comparator;
import com.xyz.kjy.db.Customer;

public class CustomerComparator implements Comparator<Customer> {

	@Override
	public int compare(Customer customer0, Customer customer1) {
		// 按照商家名称排序
		String catalog0 = "";
		String catalog1 = "";
		
		if(customer0!=null&&customer0.getStoreName()!=null)
			catalog0=HanYuUtil.getStringPinYin(customer0.getStoreName());
		if(customer1!=null&&customer1.getStoreName()!=null)
			catalog1=HanYuUtil.getStringPinYin(customer1.getStoreName());
		return catalog0.compareTo(catalog1);
	}

}

Customer.java

public class Customer  {
	private String storeName;//店名，唯一
	
	public String getStoreName() {
		return storeName;
	}
	public void setStoreName(String storeName) {
		this.storeName = storeName;
	}

}

这里面用到了一个第三方的包，在附件