Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: LGPL 

import android.content.Context;
import android.content.SharedPreferences;

import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;

import android.preference.PreferenceManager;
import android.telephony.TelephonyManager;

public class Main {
    /**
     * @Thach
     * @Description: get and save deviceId into sharePreference
     * @param context
     * @return deviceId 
     */
    public static String getDeviceId(Context context, String keyPref) {
        String deviceId = null;
        if (context != null) {
            // Get from sharePref first 
            deviceId = onGetPref(context, keyPref);
            // If this is first time
            if (deviceId == null) {
                TelephonyManager telephonyManager;
                telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
                deviceId = telephonyManager.getDeviceId();
                // Get deviceId with other method - MAC address 
                if (deviceId == null) {
                    deviceId = initMacAddress(context);
                }
            }
            // save to preference
            onSavePref(context, keyPref, deviceId);
        }
        return deviceId;
    }

    /** 
     * @Thach
     * @Description: on get data to SharedPref with given key 
     * @param context
     * @param key 
     * @param msg data will be save
     */
    public static String onGetPref(Context context, String key) {
        SharedPreferences pre = PreferenceManager.getDefaultSharedPreferences(context);
        return pre.getString(key, null);
    }

    /**
     * @Thach @SK29
     * @Init MAC address and save to preference
     * @param context
     * @return
     */
    private static String initMacAddress(Context context) {
        // INIT macAddress
        String macAddress;

        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);

        if (wifiManager.isWifiEnabled()) {
            // WIFI ALREADY ENABLED. GRAB THE MAC ADDRESS HERE
            WifiInfo info = wifiManager.getConnectionInfo();
            macAddress = info.getMacAddress();

        } else {
            // ENABLE THE WIFI FIRST
            wifiManager.setWifiEnabled(true);

            // WIFI IS NOW ENABLED. GRAB THE MAC ADDRESS HERE
            WifiInfo info = wifiManager.getConnectionInfo();
            macAddress = info.getMacAddress();

            // NOW DISABLE IT AGAIN
            wifiManager.setWifiEnabled(false);
        }

        if (macAddress == null) {
            macAddress = android.os.Build.ID;
        }

        return macAddress;
    }

    /** 
     * @Thach
     * @Description: on save data to SharedPref with given key 
     * @param context
     * @param key 
     * @param msg data will be save
     */
    public static void onSavePref(Context context, String key, String msg) {
        SharedPreferences pre = PreferenceManager.getDefaultSharedPreferences(context);
        pre.edit().putString(key, msg).commit();
    }
}