<span style="font-family:KaiTi_GB2312;font-size:18px;"><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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/tv"
        android:textSize="30sp"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <EditText
        android:textSize="30sp"
        android:layout_below="@+id/tv"
        android:id="@+id/et"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
    <Button
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true"
        android:layout_below="@+id/et"
        android:onClick="click"
        android:text="開始轉換"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</RelativeLayout>
</span>
 

<span style="font-family:KaiTi_GB2312;font-size:18px;">package com.example.yu_longji.android29;

/**
 * Created by yu_longji on 2015/9/1.
 */

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;

import java.util.HashSet;
import java.util.Set;


/**
 * Created by yu_longji on 2015/8/31.
 */
public class Pinyin {

    public static String makeStringByStringSet(Set<String> stringSet) {
        StringBuilder str = new StringBuilder();
        int i = 0;
        for (String s : stringSet) {
            if (i == stringSet.size() - 1) {
                str.append(s);
            } else {
                str.append(s + ",");
            }
            i++;
        }
        return str.toString().toLowerCase();
    }

    /**
     * 獲取拼音集合
     *
     */
    public static Set<String> getPinyin(String src) {
        if (src != null && !src.trim().equalsIgnoreCase("")) {
            char[] srcChar;
            srcChar = src.toCharArray();
            //漢語拼音格式輸出類
            HanyuPinyinOutputFormat hanYuPinOutputFormat = new HanyuPinyinOutputFormat();

            //輸出設定，大小寫，音標方式等
            hanYuPinOutputFormat.setCaseType(HanyuPinyinCaseType.UPPERCASE);
            hanYuPinOutputFormat.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
            hanYuPinOutputFormat.setVCharType(HanyuPinyinVCharType.WITH_U_UNICODE);
            String[][] temp = new String[src.length()][];
            for (int i = 0; i < srcChar.length; i++) {
                char c = srcChar[i];
                //是中文或者a-z或者A-Z轉換拼音(我的需求，是保留中文或者a-z或者A-Z)
                if (String.valueOf(c).matches("[\\u4E00-\\u9FA5]+")) {
                    try {
                        temp[i] = PinyinHelper.toHanyuPinyinStringArray(srcChar[i], hanYuPinOutputFormat);
                    } catch (BadHanyuPinyinOutputFormatCombination e) {
                        e.printStackTrace();
                    }
                } else if (((int) c >= 65 && (int) c <= 90) || ((int) c >= 97 && (int) c <= 122)) {
                    temp[i] = new String[]{String.valueOf(srcChar[i])};
                } else {
                    temp[i] = new String[]{""};
                }
            }
            String[] pingyinArray = Exchange(temp);

            Set<String> pinyinSet = new HashSet<String>();
            for (int i = 0; i < pingyinArray.length; i++) {
                pinyinSet.add(pingyinArray[i]);
            }
            return pinyinSet;
        }
        return null;
    }

    /**
     * 遞迴
     *
     */
    public static String[] Exchange(String[][] strJaggedArray) {
        String[][] temp = DoExchange(strJaggedArray);
        return temp[0];
    }

    /**
     * 遞迴
     *
     */
    private static String[][] DoExchange(String[][] strJaggedArray) {
        int len = strJaggedArray.length;
        if (len >= 2) {
            int len1 = strJaggedArray[0].length;
            int len2 = strJaggedArray[1].length;
            int newlen = len1 * len2;
            String[] temp = new String[newlen];
            int Index = 0;
            for (int i = 0; i < len1; i++) {
                for (int j = 0; j < len2; j++) {
                    temp[Index] = strJaggedArray[0][i] + strJaggedArray[1][j];
                    Index++;
                }
            }
            String[][] newArray = new String[len - 1][];
            for (int i = 2; i < len; i++) {
                newArray[i - 1] = strJaggedArray[i];
            }
            newArray[0] = temp;
            return DoExchange(newArray);
        } else {
            return strJaggedArray;
        }
    }

}</span>