School Management Kotlin application class

Global.kt

package com.sandftechnologies.schoolmanagementStaff.ModelClasses

import android.app.Application
import android.content.Context
import android.content.SharedPreferences
import android.graphics.Typeface
import android.widget.ArrayAdapter

import com.facebook.drawee.backends.pipeline.Fresco
import com.sandftechnologies.schoolmanagementStaff.Activities.ViewStudent
import com.sandftechnologies.schoolmanagementStaff.DataCache
import com.sandftechnologies.schoolmanagementStaff.HelperClass.DBHelper
import com.sandftechnologies.schoolmanagementStaff.Internet.GlobalVariables

/**
 * Created by PC4 on 5/6/2017.
 */

class Global : Application(), GlobalVariables {


    override fun onCreate() {
        super.onCreate()
        Fresco.initialize(this)
        student = StudentCompleteModel()

        typeface = Typeface.createFromAsset(assets, "fonts/Roboto-Light.ttf")
        typefaceBold = Typeface.createFromAsset(assets, "fonts/Roboto-Regular.ttf")
        val dbHelper = DBHelper.getInstance(this)
        mDatacache = DataCache.getInstance()
        val shared = getSharedPreferences(GlobalVariables.Shared_Pref_Name, Context.MODE_PRIVATE)
        userID = shared.getString("userID", "")
        firmID = shared.getString("firmID", "")

    }

    companion object {
        //ClassId,RegDate---, flag=0-->details[Name,id,Roll,attendance[0,1,a,p]]
        //flag=1-->+Atd_Id
        var CategoryAdapter: ArrayAdapter<String>? = null
        var SelectedCategoryPosition: Int = 0

        var isStudentLoaded = false
        var student :StudentCompleteModel ?=null/* (Name, Rollnumber, MobileNumber, FatherName, MotherName, Email, DoB, Gender, Religion, Cast, CategoryName, Profilepic, S_Addressline1, S_Addressline2, S_AddressPIN, P_AddressLine1, P_AddressLine2, P_AddressPIN, Id, ClassId, ClassName, AddressFlag, Date_Admsn, Standard_Admited, Identification, Is_Former, Former_Madrasa, MadrasaRegNo, Tc_Number, Guardian_Name, G_AddressLine1, G_AddressLine2, G_AddressPIN, G_Relation, G_Occupation, AdmissionNumber) =*/
        var CategoryMap: Map<String, Int>? = null
        var typeface: Typeface? = null
            private set
        var typefaceBold: Typeface? = null
            private set

        private var mDatacache: DataCache? = null
        var userID: String? = null
            private set
        var firmID: String? = null
            private set
    }


}