public class MainActivity extends Activity {    static final int GB_SP_DIFF = 160;    // 存放国标一级汉字不同读音的起始区位码    static final int[] secPosValueList = { 1601, 1637, 1833, 2078, 2274, 2302,            2433, 2594, 2787, 3106, 3212, 3472, 3635, 3722, 3730, 3858, 4027,            4086, 4390, 4558, 4684, 4925, 5249, 5600 };    // 存放国标一级汉字不同读音的起始区位码对应读音    static final char[] firstLetter = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',            'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'w', 'x',            'y', 'z' };    private EditText edit;    private TextView text;    private Button button;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        edit = (EditText) this.findViewById(R.id.edit);        text = (TextView) this.findViewById(R.id.textView);        button = (Button) this.findViewById(R.id.button);        button.setOnClickListener(buttonListener);        text.setText("拼音");    }    private View.OnClickListener buttonListener = new View.OnClickListener() {        @Override        public void onClick(View v) {            // TODO Auto-generated method stub            if (v == button) {                String characters = edit.getText().toString();                String spells = getSpells(characters);                text.setText(spells);            }        }    };    public static String getSpells(String characters) {        StringBuffer buffer = new StringBuffer();        for (int i = 0; i < characters.length(); i++) {            char ch = characters.charAt(i);            if ((ch >> 7) == 0) {                // 判断是否为汉字，如果左移7为为0就不是汉字，否则是汉字            } else {                char spell = getFirstLetter(ch);                buffer.append(String.valueOf(spell));            }        }        return buffer.toString();    }    // 获取一个汉字的首字母    public static Character getFirstLetter(char ch) {        byte[] uniCode = null;        try {            uniCode = String.valueOf(ch).getBytes("GBK");        } catch (UnsupportedEncodingException e) {            e.printStackTrace();            return null;        }        if (uniCode[0] < 128 && uniCode[0] > 0) { // 非汉字            return null;        } else {            return convert(uniCode);        }    }    /**     * 获取一个汉字的拼音首字母。 GB码两个字节分别减去160，转换成10进制码组合就可以得到区位码     * 例如汉字“你”的GB码是0xC4/0xE3，分别减去0xA0（160）就是0x24/0x43     * 0x24转成10进制就是36，0x43是67，那么它的区位码就是3667，在对照表中读音为‘n’     */    static char convert(byte[] bytes) {        char result = '-';        int secPosValue = 0;        int i;        for (i = 0; i < bytes.length; i++) {            bytes[i] -= GB_SP_DIFF;        }        secPosValue = bytes[0] * 100 + bytes[1];        for (i = 0; i < 23; i++) {            if (secPosValue >= secPosValueList[i]                    && secPosValue < secPosValueList[i + 1]) {                result = firstLetter[i];                break;            }        }        return result;    }}