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
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- 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
- *
- * Edit By 幻舞奇影
- *
- */
- 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
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