wemall doraemon中Android app商城系统工具集合类,包含各种程序中用到的静态方法

wemall doraemon中Android app商城系统工具集合类,包含各种程序中用到的静态方法,可用于其他商城或者系统的编程参考

package cn.zzu.edu.wemall.utils;

import java.io.File;
import java.security.MessageDigest;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Random;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

/*
 *规范化数据类型
 * 工具集合类,包含各种程序中用到的静态方法
 * 
 * 
 * 
 */
public class Utils {
    // 判断是否处于联网状态
    public static boolean isNetworkConnected(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mNetworkInfo = mConnectivityManager
                    .getActiveNetworkInfo();
            if (mNetworkInfo != null) {
                return mNetworkInfo.isAvailable();
            }
        }
        return false;
    }

    // 删除指定路径的文件夹
    public static void delFolder(String folderPath) {
        try {
            delAllFile(folderPath); // 删除完里面所有内容
            String filePath = folderPath;
            filePath = filePath.toString();
            java.io.File myFilePath = new java.io.File(filePath);
            myFilePath.delete(); // 删除空文件夹
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    // 删除指定路径文件夹及其所有内容
    public static boolean delAllFile(String path) {
        boolean flag = false;
        File file = new File(path);
        if (!file.exists()) {
            return flag;
        }
        if (!file.isDirectory()) {
            return flag;
        }
        String[] tempList = file.list();
        File temp = null;
        for (int i = 0; i < tempList.length; i++) {
            if (path.endsWith(File.separator)) {
                temp = new File(path + tempList[i]);
            } else {
                temp = new File(path + File.separator + tempList[i]);
            }
            if (temp.isFile()) {
                temp.delete();
            }
            if (temp.isDirectory()) {
                delAllFile(path + "/" + tempList[i]);// 先删除文件夹里面的文件
                delFolder(path + "/" + tempList[i]);// 再删除空文件夹
                flag = true;
            }
        }
        return flag;
    }

    // 获取指定路径目录/文件的总大小(如目录包含目录下所有文件)
    public static long getTotalSizeOfFilesInDir(String path) {
        File file = new File(path);
        if (file.isFile())
            return file.length();
        final File[] children = file.listFiles();
        long total = 0;
        if (children != null)
            for (final File child : children)
                total += getTotalSizeOfFilesInDir(child.getPath());
        return total;
    }

    // 大小格式化工具,传入long型值
    public static String FomatFilesize(long size) {
        /**
         * 返回byte的数据大小对应的文本
         * 
         * @param size
         * @return
         */
        DecimalFormat formater = new DecimalFormat("####.00");
        if (size < 1024) {
            return size + "B";
        } else if (size < 1024 * 1024) {
            float kbsize = size / 1024f;
            return formater.format(kbsize) + "KB";
        } else if (size < 1024 * 1024 * 1024) {
            float mbsize = size / 1024f / 1024f;
            return formater.format(mbsize) + "MB";
        } else if (size < 1024 * 1024 * 1024 * 1024) {
            float gbsize = size / 1024f / 1024f / 1024f;
            return formater.format(gbsize) + "GB";
        } else {
            return "size: error";

        }
    }

    // list转json字符串
    public static String ArrayListToJsonString(
            ArrayList<HashMap<String, Object>> order) {
        JSONArray json = (JSONArray) JSONArray.toJSON(order);
        return json.toString();
    }

    // json字符串转arraylist
    public static ArrayList<HashMap<String, String>> JsonStringToArrayList(
            String data) {
        JSONObject jsonobject = (JSONObject) JSONObject.parse("{order:" + data
                + "}");
        ArrayList<HashMap<String, String>> list = new ArrayList<HashMap<String, String>>();
        for (Object item : jsonobject.getJSONArray("order")) {
            HashMap<String, String> thisitem = new HashMap<String, String>();
            thisitem.put("name", ((JSONObject) item).get("name").toString());
            thisitem.put("num", ((JSONObject) item).get("num").toString());
            thisitem.put("price", ((JSONObject) item).get("price").toString());
            thisitem.put("name", ((JSONObject) item).get("name").toString());
            list.add(thisitem);
        }
        return list;
    }

    // MD5加密
    public static String MD5(String inStr) {
        MessageDigest md5 = null;
        try {
            md5 = MessageDigest.getInstance("MD5");
        } catch (Exception e) {
            System.out.println(e.toString());
            e.printStackTrace();
            return "";
        }
        char[] charArray = inStr.toCharArray();
        byte[] byteArray = new byte[charArray.length];

        for (int i = 0; i < charArray.length; i++)
            byteArray[i] = (byte) charArray[i];

        byte[] md5Bytes = md5.digest(byteArray);

        StringBuffer hexValue = new StringBuffer();

        for (int i = 0; i < md5Bytes.length; i++) {
            int val = ((int) md5Bytes[i]) & 0xff;
            if (val < 16)
                hexValue.append("0");
            hexValue.append(Integer.toHexString(val));
        }
        return hexValue.toString();
    }

    // 获取6位随机26字母
    public static String getRandomSix() {
        Random rd = new Random();
        String n = "";
        int getNum;
        do {
            getNum = Math.abs(rd.nextInt()) % 26 + 97;// 产生字母a-z的随机数
            char num1 = (char) getNum;
            String dn = Character.toString(num1);
            n += dn;
        } while (n.length() < 6);
        return n;
    }

    // 获取字符串的base值,用于网络传输避免乱码
    public static String getBASE64(String s) {
        if (s == null)
            return null;
        return (new Decoder.BASE64Encoder()).encode(s.getBytes());
    }
    //防止快速多次点击
    public static boolean isFastDoubleClick() {
        long lastClickTime = 0;
        long time = System.currentTimeMillis();
        long timeD = time - lastClickTime;
        if ( 0 < timeD && timeD < 500) {   
            return true;   
        }   
        lastClickTime = time;   
        return false;   
    }

}

原文详情地址:http://git.oschina.net/zzunet/wemall-doraemon/commit/e8f303df5663dc69fe47bb9623222149d40e3956 wemall doraemonAndroid app商城详情地址:http://www.koahub.com/home/product/55 wemall官网地址:http://www.wemallshop.com wemall 开源微商城 ,微信商城,商城源码,三级分销,微生鲜,微水果,微外卖,微订餐---专业的o2o系统

收藏 0分享浏览 661
7年前
跟帖
暂无
说几句
广告位 点击查看投放指南

友情链接 大搜车前端团队博客
我的收藏