/** * 个人收款 https://gitee.com/DaLianZhiYiKeJi/xpay * 大连致一科技有限公司 * */ package com.zhiyi.onepay.util; import android.content.Context; import android.content.pm.PackageManager; import android.os.Build; import android.provider.Settings; import android.util.Log; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class AppUtil { public static String getUniqueId(Context context) { String androidID = Settings.Secure.getString(context.getContentResolver(), Settings.Secure.ANDROID_ID); String id = androidID + Build.SERIAL; return toMD5(id); } public static String toMD5(String text){ //获取摘要器 MessageDigest MessageDigest messageDigest; try { messageDigest = MessageDigest.getInstance("MD5"); } catch (NoSuchAlgorithmException e) { Log.e("ZYKJ", "Md5Bug", e); return null; } //通过摘要器对字符串的二进制字节数组进行hash计算 byte[] digest = messageDigest.digest(text.getBytes()); StringBuilder sb = new StringBuilder(); for (int i = 0; i < digest.length; i++) { //循环每个字符 将计算结果转化为正整数; int digestInt = digest[i] & 0xff; //将10进制转化为较短的16进制 String hexString = Integer.toHexString(digestInt); //转化结果如果是个位数会省略0,因此判断并补0 if (hexString.length() < 2) { sb.append(0); } //将循环结果添加到缓冲区 sb.append(hexString); } //返回整个结果 return sb.toString(); } public static String randString(int len){ StringBuilder sb = new StringBuilder(len); char[] seqs = new char[]{'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G','H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R','S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '0', '1', '2','3', '4', '5', '6', '7', '8', '9'}; int total = seqs.length; for (int i=0;i<len;i++){ int rnd = (int) (Math.random()*total); sb.append(seqs[rnd]); } return sb.toString(); } public static int getVersionCode(Context mContext) { int versionCode = 0; try { versionCode = mContext.getPackageManager(). getPackageInfo(mContext.getPackageName(), 0).versionCode; } catch (PackageManager.NameNotFoundException e) { e.printStackTrace(); } return versionCode; } }