code: package com.lody.virtual.remote;
  
  import android.os.Parcel;
  import android.os.Parcelable;
  
  import com.lody.virtual.os.VEnvironment;
  
  import java.io.File;
  import java.io.IOException;
  import java.io.RandomAccessFile;
  
  /**
   * @author Lody
   */
  public class VDeviceInfo implements Parcelable {
  
      public String deviceId;
      public String androidId;
      public String wifiMac;
      public String bluetoothMac;
      public String iccId;
      public String serial;
      public String gmsAdId;
  
      @Override
      public int describeContents() {
          return 0;
      }
  
      @Override
      public void writeToParcel(Parcel dest, int flags) {
          dest.writeString(this.deviceId);
          dest.writeString(this.androidId);
          dest.writeString(this.wifiMac);
          dest.writeString(this.bluetoothMac);
          dest.writeString(this.iccId);
          dest.writeString(this.serial);
          dest.writeString(this.gmsAdId);
      }
  
      public VDeviceInfo() {}
  
      public VDeviceInfo(Parcel in) {
          this.deviceId = in.readString();
          this.androidId = in.readString();
          this.wifiMac = in.readString();
          this.bluetoothMac = in.readString();
          this.iccId = in.readString();
          this.serial = in.readString();
          this.gmsAdId = in.readString();
      }
  
      public static final Parcelable.Creator<VDeviceInfo> CREATOR = new Parcelable.Creator<VDeviceInfo>() {
          @Override
          public VDeviceInfo createFromParcel(Parcel source) {
              return new VDeviceInfo(source);
          }
  
          @Override
          public VDeviceInfo[] newArray(int size) {
              return new VDeviceInfo[size];
          }
      };
  
      public File getWifiFile(int userId) {
          File wifiMacFie = VEnvironment.getWifiMacFile(userId);
          if (!wifiMacFie.exists()) {
              try {
                  RandomAccessFile file = new RandomAccessFile(wifiMacFie, "rws");
                  file.write((wifiMac + "\n").getBytes());
                  file.close();
              } catch (IOException e) {
                  e.printStackTrace();
              }
          }
          return wifiMacFie;
      }
  }
  