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
*
*
*
*/
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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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

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