Enabling wifi on new demo session

import android.media.AudioManager;

import android.media.AudioSystem;

import android.net.Uri;

import android.net.wifi.WifiManager;

import android.os.Environment;

import android.os.FileUtils;

import android.os.Handler;

    private ServiceThread mHandlerThread;

    private PendingIntent mResetDemoPendingIntent;

    private CameraManager mCameraManager;

    private WifiManager mWifiManager;

    private String[] mCameraIdsWithFlash;

    private Configuration mSystemUserConfiguration;

    private PreloadAppsInstaller mPreloadAppsInstaller;

                                PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP,

                                TAG);

                mNm = NotificationManager.from(getContext());

                mWifiManager = (WifiManager) getContext().getSystemService(Context.WIFI_SERVICE);

                mCameraManager = (CameraManager) getContext()

                        .getSystemService(Context.CAMERA_SERVICE);

                mCameraIdsWithFlash = getCameraIdsWithFlash();

        mAmi.updatePersistentConfigurationForUser(getSystemUsersConfiguration(), userId);

        turnOffAllFlashLights();

        muteVolumeStreams();

        if (!mWifiManager.isWifiEnabled()) {

            mWifiManager.setWifiEnabled(true);

        }

        // Disable lock screen for demo users.

        LockPatternUtils lockPatternUtils = new LockPatternUtils(getContext());

        lockPatternUtils.setLockScreenDisabled(true, userId);