android框架StringUtils工具类

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根据常用到的一些工具总结如下：

import java.io.UnsupportedEncodingException;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.regex.Pattern;import android.app.Activity;import android.content.Context;import android.content.pm.ApplicationInfo;import android.content.pm.PackageManager;import android.content.pm.PackageManager.NameNotFoundException;import android.os.Bundle;import android.telephony.TelephonyManager;/** * 字符串操作工具包 */public class StringUtils {    private final static Pattern emailer = Pattern            .compile("\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*");    private final static Pattern phone = Pattern            .compile("^((13[0-9])|170|(15[^4,\\D])|(18[0,5-9]))\\d{8}$");    private final static ThreadLocal<SimpleDateFormat> dateFormater = new ThreadLocal<SimpleDateFormat>() {        @Override        protected SimpleDateFormat initialValue() {            return new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");        }    };    private final static ThreadLocal<SimpleDateFormat> dateFormater2 = new ThreadLocal<SimpleDateFormat>() {        @Override        protected SimpleDateFormat initialValue() {            return new SimpleDateFormat("yyyy-MM-dd");        }    };    /**     * 返回当前系统时间     */    public static String getDataTime(String format) {        SimpleDateFormat df = new SimpleDateFormat(format);        return df.format(new Date());    }    /**     * 返回当前系统时间     */    public static String getDataTime() {        return getDataTime("HH:mm");    }    /**     * 毫秒值转换为mm:ss     *      * @author kymjs     * @param ms     */    public static String timeFormat(int ms) {        StringBuilder time = new StringBuilder();        time.delete(0, time.length());        ms /= 1000;        int s = ms % 60;        int min = ms / 60;        if (min < 10) {            time.append(0);        }        time.append(min).append(":");        if (s < 10) {            time.append(0);        }        time.append(s);        return time.toString();    }    /**     * 将字符串转位日期类型     *      * @return     */    public static Date toDate(String sdate) {        try {            return dateFormater.get().parse(sdate);        } catch (ParseException e) {            return null;        }    }    /**     * 判断给定字符串时间是否为今日     *      * @param sdate     * @return boolean     */    public static boolean isToday(String sdate) {        boolean b = false;        Date time = toDate(sdate);        Date today = new Date();        if (time != null) {            String nowDate = dateFormater2.get().format(today);            String timeDate = dateFormater2.get().format(time);            if (nowDate.equals(timeDate)) {                b = true;            }        }        return b;    }    /**     * 判断给定字符串是否空白串 空白串是指由空格、制表符、回车符、换行符组成的字符串 若输入字符串为null或空字符串，返回true     */    public static boolean isEmpty(String input) {        if (input == null || "".equals(input))            return true;        for (int i = 0; i < input.length(); i++) {            char c = input.charAt(i);            if (c != ' ' && c != '\t' && c != '\r' && c != '\n') {                return false;            }        }        return true;    }    /**     * 判断是不是一个合法的电子邮件地址     */    public static boolean isEmail(String email) {        if (email == null || email.trim().length() == 0)            return false;        return emailer.matcher(email).matches();    }    /**     * 判断是不是一个合法的手机号码     */    public static boolean isPhone(String phoneNum) {        if (phoneNum == null || phoneNum.trim().length() == 0)            return false;        return phone.matcher(phoneNum).matches();    }    /**     * 字符串转整数     *      * @param str     * @param defValue     * @return     */    public static int toInt(String str, int defValue) {        try {            return Integer.parseInt(str);        } catch (Exception e) {        }        return defValue;    }    /**     * 对象转整     *      * @param obj     * @return 转换异常返回 0     */    public static int toInt(Object obj) {        if (obj == null)            return 0;        return toInt(obj.toString(), 0);    }    /**     * String转long     *      * @param obj     * @return 转换异常返回 0     */    public static long toLong(String obj) {        try {            return Long.parseLong(obj);        } catch (Exception e) {        }        return 0;    }    /**     * String转double     *      * @param obj     * @return 转换异常返回 0     */    public static double toDouble(String obj) {        try {            return Double.parseDouble(obj);        } catch (Exception e) {        }        return 0D;    }    /**     * 字符串转布尔     *      * @param b     * @return 转换异常返回 false     */    public static boolean toBool(String b) {        try {            return Boolean.parseBoolean(b);        } catch (Exception e) {        }        return false;    }    /**     * 判断一个字符串是不是数字     */    public static boolean isNumber(String str) {        try {            Integer.parseInt(str);        } catch (Exception e) {            return false;        }        return true;    }    /**     * 获取AppKey     */    public static String getMetaValue(Context context, String metaKey) {        Bundle metaData = null;        String apiKey = null;        if (context == null || metaKey == null) {            return null;        }        try {            ApplicationInfo ai = context.getPackageManager()                    .getApplicationInfo(context.getPackageName(),                            PackageManager.GET_META_DATA);            if (null != ai) {                metaData = ai.metaData;            }            if (null != metaData) {                apiKey = metaData.getString(metaKey);            }        } catch (NameNotFoundException e) {        }        return apiKey;    }    /**     * 获取手机IMEI码     */    public static String getPhoneIMEI(Activity aty) {        TelephonyManager tm = (TelephonyManager) aty                .getSystemService(Activity.TELEPHONY_SERVICE);        return tm.getDeviceId();    }    /**     * MD5加密     */    public static String md5(String string) {        byte[] hash;        try {            hash = MessageDigest.getInstance("MD5").digest(                    string.getBytes("UTF-8"));        } catch (NoSuchAlgorithmException e) {            throw new RuntimeException("Huh, MD5 should be supported?", e);        } catch (UnsupportedEncodingException e) {            throw new RuntimeException("Huh, UTF-8 should be supported?", e);        }        StringBuilder hex = new StringBuilder(hash.length * 2);        for (byte b : hash) {            if ((b & 0xFF) < 0x10)                hex.append("0");            hex.append(Integer.toHexString(b & 0xFF));        }        return hex.toString();    }}

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