Android工具类——拼音帮助类PinyinUtils，汉字转拼音，首字母

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;
/**
 * 拼音帮助类
 */
public class PinyinUtils {
	/**
	 * 将字符串中的中文转化为拼音,其他字符不变
	 * 花花大神->huahuadashen
	 * @param inputString
	 * @return
	 */
	public static String getPingYin(String inputString) {
		HanyuPinyinOutputFormat format = new HanyuPinyinOutputFormat();
		format.setCaseType(HanyuPinyinCaseType.LOWERCASE);
		format.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
		format.setVCharType(HanyuPinyinVCharType.WITH_V);
		char[] input = inputString.trim().toCharArray();
		String output = "";
		try {
			for (char curchar : input) {
				if (java.lang.Character.toString(curchar).matches(
						"[\\u4E00-\\u9FA5]+")) {
					String[] temp = PinyinHelper.toHanyuPinyinStringArray(
							curchar, format);
					output += temp[0];
				} else
					output += java.lang.Character.toString(curchar);
			}
		} catch (BadHanyuPinyinOutputFormatCombination e) {
			e.printStackTrace();
		}
		return output;
	}
	/**
	 * 汉字转换为汉语拼音首字母，英文字符不变
	 * 花花大神->hhds
	 * @param chinese 汉字
	 * @return 拼音
	 */
	public static String getFirstSpell(String chinese) {
         StringBuffer pybf = new StringBuffer();
         char[] arr = chinese.toCharArray();
         HanyuPinyinOutputFormat defaultFormat = new HanyuPinyinOutputFormat();
         defaultFormat.setCaseType(HanyuPinyinCaseType.LOWERCASE);
         defaultFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
         for (char curchar : arr) {
                if (curchar > 128) {
                        try {
                                String[] temp = PinyinHelper.toHanyuPinyinStringArray(curchar, defaultFormat);
                                if (temp != null) {
                                        pybf.append(temp[0].charAt(0));
                                }
                        } catch (BadHanyuPinyinOutputFormatCombination e) {
                                e.printStackTrace();
                        }
                } else {
                        pybf.append(curchar);
                }
        }
         return pybf.toString().replaceAll("\\W", "").trim();
    }
}

文章出处：http://www.codefans.net/articles/933.shtml