Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.content.Context;

import android.telephony.TelephonyManager;

import java.security.MessageDigest;

import java.util.UUID;

public class Main {
    public static String get_device_id(Context ctx) {

        final TelephonyManager tm = (TelephonyManager) ctx.getSystemService(Context.TELEPHONY_SERVICE);

        String tmDevice = "";
        String tmSerial = null;
        String androidId = null;

        try {
            tmDevice = "" + tm.getDeviceId();
        } catch (Exception ex) {
        }

        try {
            tmSerial = "" + tm.getSimSerialNumber();
        } catch (Exception ex) {
        }
        try {
            androidId = "" + android.provider.Settings.Secure.getString(ctx.getContentResolver(),
                    android.provider.Settings.Secure.ANDROID_ID);
        } catch (Exception ex) {
        }
        try {
            UUID deviceUuid = new UUID(androidId.hashCode(),
                    ((long) tmDevice.hashCode() << 32) | tmSerial.hashCode());
            String deviceId = deviceUuid.toString();

            MessageDigest md = MessageDigest.getInstance("SHA-256");
            md.update(deviceId.getBytes());

            byte byteData[] = md.digest();

            //convert the byte to hex format method 1
            StringBuffer sb = new StringBuffer();
            for (int i = 0; i < byteData.length; i++) {
                sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));
            }
            deviceId = sb.toString();

            return deviceId;
        } catch (Exception ex) {
        }
        return "nodeviceid";
    }
}