How to add Image and text in Sqlite Database and Display it in recyclerView with kotlin

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'kotlin-kapt'
android {
    compileSdkVersion 30

    defaultConfig {
        applicationId "com.rrtutors.my3dview"
        minSdkVersion 16
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"
        multiDexEnabled true

        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8

    }
    buildTypes {
        release {

            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}
ext {
    roomVersion = '2.2.5'
}
dependencies {
    implementation fileTree(dir: "libs", include: ["*.jar"])
    implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
    implementation 'com.google.android.material:material:1.1.0'
    implementation 'com.android.support.constraint:constraint-layout:2.0.4'
    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.1'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation "androidx.recyclerview:recyclerview:1.1.0"
    implementation "androidx.cardview:cardview:1.0.0"
    implementation 'com.github.bkhezry.android-image-picker:imagepicker:1.4.0'
    implementation "androidx.room:room-runtime:$roomVersion"
    kapt  "androidx.room:room-compiler:$roomVersion"

}

@Database(entities = arrayOf(Contact::class),version = 1,exportSchema = false)
abstract  class MyDatabase:RoomDatabase() {
    companion object{
        var instance:MyDatabase?=null;
        fun getInstance(ctx: Context):MyDatabase
        {
            if(instance!=null)
            {
                return  instance as MyDatabase;
            }

            instance= Room.databaseBuilder(ctx,MyDatabase::class.java,"mydb").run {
                allowMainThreadQueries()
            }.build()
            return instance as MyDatabase;
        }
    }
    abstract fun contactsDAO():ContactsDAO;
}

package com.rrtutors.my3dview.database

import androidx.room.ColumnInfo
import androidx.room.Entity
import androidx.room.PrimaryKey
import java.sql.Blob

@Entity(tableName = "Contact")
class Contact(@ColumnInfo(name = "name") var name:String,@ColumnInfo(name = "contact_number") var contact_number:String,@ColumnInfo(name = "image",typeAffinity = ColumnInfo.BLOB) var image:ByteArray) {
    @PrimaryKey(autoGenerate = true) @ColumnInfo(name="_id")
    var id:Int=0 ;
}

package com.rrtutors.my3dview.database

import androidx.room.Dao
import androidx.room.Insert
import androidx.room.OnConflictStrategy
import androidx.room.Query

@Dao
interface ContactsDAO {
    @Insert(onConflict = OnConflictStrategy.IGNORE)
    fun insert(registration:Contact)

    @Query("select * from Contact ")
    fun fetchContacts():List;
}

package com.rrtutors.my3dview


import android.app.Activity
import android.content.Intent
import android.graphics.Bitmap
import android.graphics.BitmapFactory
import android.net.Uri
import android.os.Bundle
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import com.esafirm.imagepicker.features.ImagePicker
import com.esafirm.imagepicker.model.Image
import com.rrtutors.my3dview.database.Contact
import com.rrtutors.my3dview.database.MyDatabase
import kotlinx.android.synthetic.main.activity_add_contact.*

import java.io.ByteArrayOutputStream


class AddContact : AppCompatActivity() {
    var name:String?=null;
    val REQUEST_CODE_PICKER:Int=201
    var imagePath:String?=null;
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_add_contact)
        name= contact_name.text.toString()
        img_add.setOnClickListener {
            ImagePicker.create(this) // Activity or Fragment
                .start(REQUEST_CODE_PICKER);
        }

        add_contact.setOnClickListener {
            val image = BitmapFactory.decodeFile(imagePath
            )
            name=contact_name.text.toString()
            if(name!!.isEmpty())
            {
                Toast.makeText(applicationContext,"Please enter Name",Toast.LENGTH_SHORT).show()
                return@setOnClickListener
            }
            if(imagePath==null||imagePath!!.isEmpty())
            {
                Toast.makeText(applicationContext,"Please select Contact Image",Toast.LENGTH_SHORT).show()
                return@setOnClickListener
            }
// convert bitmap to byte
// convert bitmap to byte
            val stream = ByteArrayOutputStream()
            image.compress(Bitmap.CompressFormat.JPEG, 100, stream)
            val imageInByte: ByteArray = stream.toByteArray()

            MyDatabase.instance!!.contactsDAO().insert(Contact(name!!,imageInByte))
            setResult(200)
            finish()
        }
    }
    override fun onActivityResult(
        requestCode: Int,
        resultCode: Int,
        data: Intent?
    ) {
        super.onActivityResult(requestCode, resultCode, data)
        if (requestCode == REQUEST_CODE_PICKER && resultCode == Activity.RESULT_OK && data != null) {
            val images =
                ImagePicker.getImages(data) as ArrayList
            imagePath=images[0].path;
            img_contact.setImageURI(Uri.parse(images[0].path))

        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".AddContact">
    <EditText
        android:id="@+id/contact_name"
        android:minHeight="80dp"
        android:paddingLeft="16dp"
        android:imeOptions="actionNext"
        android:inputType="textCapWords"
        android:gravity="center_vertical"
        android:hint="Enter Contact Name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
    <EditText
        android:id="@+id/contact_number"
        android:minHeight="80dp"
        android:paddingLeft="16dp"
        android:gravity="center_vertical"
        android:hint="Enter Contact Number"
        android:inputType="number"
        android:maxLength="10"
        android:layout_marginTop="10dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:gravity="center_vertical"
        android:layout_height="wrap_content">
        <ImageView
            android:id="@+id/img_contact"
            android:layout_width="200dp"
            android:layout_margin="10dp"
            android:background="#4DD2D2D2"
            android:layout_height="200dp"/>
        <ImageView
            android:id="@+id/img_add"

            android:src="@android:drawable/ic_input_add"
            android:layout_width="80dp"
            android:layout_height="80dp"/>
    </LinearLayout>

    <Button
        android:id="@+id/add_contact"
        android:text="Submit"
        android:layout_gravity="center"
        android:layout_margin="10dp"
        android:minEms="8"
        android:textSize="16dp"
        android:background="#DF2619"
        android:textColor="#FFF"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>


</LinearLayout>

package com.rrtutors.my3dview

import android.content.Intent
import android.os.Bundle
import android.util.Log
import androidx.appcompat.app.AppCompatActivity
import androidx.recyclerview.widget.LinearLayoutManager
import com.rrtutors.my3dview.database.Contact
import com.rrtutors.my3dview.database.MyDatabase
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {
    var listContact:List?=null
    var adapter:RecyclerAdapter?=null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        contact_list.layoutManager=LinearLayoutManager(applicationContext,LinearLayoutManager.VERTICAL,false)
        listContact=MyDatabase.getInstance(applicationContext)!!.contactsDAO().fetchContacts()

        adapter=RecyclerAdapter(applicationContext)
        contact_list.adapter=adapter
        if(listContact!=null)
            adapter!!.addContactS(listContact!!)

        add_contact.setOnClickListener {
            startActivityForResult(Intent(applicationContext,AddContact::class.java),200)
        }


    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        if(requestCode==200&&resultCode==200)
        {
            listContact=MyDatabase.getInstance(applicationContext)!!.contactsDAO().fetchContacts()
            if(listContact!=null)
                adapter!!.addContactS(listContact!!)
        }
    }
}

package com.rrtutors.my3dview

import android.content.Context
import android.graphics.BitmapFactory
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView
import com.rrtutors.my3dview.database.Contact
import java.io.ByteArrayInputStream


class RecyclerAdapter (): RecyclerView.Adapter() {

    var layoutiNflator:LayoutInflater?=null;
    var listContact:List?=null
    constructor ( ctx:Context):this()
    {
        layoutiNflator= LayoutInflater.from(ctx)
        listContact= listOf()
    }

    fun addContactS(listContacts :List)
    {
        listContact=listContacts;
        notifyDataSetChanged()
    }


    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerViewHolder {
       return RecyclerViewHolder(layoutiNflator!!.inflate(R.layout.contact_item,parent,false));
    }

    override fun getItemCount(): Int {

        return listContact!!.size;
    }

    override fun onBindViewHolder(holder: RecyclerViewHolder, position: Int) {

        holder.text.text= listContact?.get(position)!!.name;
        holder.contact_number.text= listContact?.get(position)!!.contact_number;
        val imageStream = ByteArrayInputStream(listContact?.get(position)!!.image)
        val theImage = BitmapFactory.decodeStream(imageStream)
        holder.img.setImageBitmap(theImage)

    }
    class RecyclerViewHolder(itemView: View): RecyclerView.ViewHolder(itemView) {
        val text:TextView=itemView.findViewById(R.id.contact_name)
        val contact_number:TextView=itemView.findViewById(R.id.contact_number)
        val img:ImageView=itemView.findViewById(R.id.contact_img)
    }
}

val image = BitmapFactory.decodeFile(imagePath
)

val stream = ByteArrayOutputStream()
image.compress(Bitmap.CompressFormat.JPEG, 100, stream)
val imageInByte: ByteArray = stream.toByteArray()

val imageStream = ByteArrayInputStream(listContact?.get(position)!!.image)
val theImage = BitmapFactory.decodeStream(imageStream)
holder.img.setImageBitmap(theImage)