获取设备识别信息

　　/**
     * 获取设备识别信息 {"device_id": "your_device_id", "mac": "your_device_mac"}
     * @param context
     * @return
     */
    public static String getDeviceInfo(Context context) {
        try{
          org.json.JSONObject json = new org.json.JSONObject();
          android.telephony.TelephonyManager tm = (android.telephony.TelephonyManager) context
              .getSystemService(Context.TELEPHONY_SERVICE);
      
          String device_id = tm.getDeviceId();
          
          android.net.wifi.WifiManager wifi = (android.net.wifi.WifiManager) context.getSystemService(Context.WIFI_SERVICE);
              
          String mac = wifi.getConnectionInfo().getMacAddress();
          json.put("mac", mac);
          
          if( TextUtils.isEmpty(device_id) ){
            device_id = mac;
          }
          
          if( TextUtils.isEmpty(device_id) ){
            device_id = android.provider.Settings.Secure.getString(context.getContentResolver(),android.provider.Settings.Secure.ANDROID_ID);
          }
          
          json.put("device_id", device_id);
          
          return json.toString();
        }catch(Exception e){
          e.printStackTrace();
        }
      return null;
    }
注：需要添加的权限：
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>