cds

class MainAdapter(val bookList: MutableList<Book>) : RecyclerView.Adapter<CustomViewHolder>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): CustomViewHolder {
        val layoutInflater = LayoutInflater.from(parent.context).inflate(R.layout.recycler_view_row, parent, false)
        return CustomViewHolder(layoutInflater)
    }


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

        holder.bindItems(bookList[position])
      /*  holder.itemView.text_isbn.text = bookList[position].barcode.toString()*/
        notifyDataSetChanged()

    }



    override fun getItemCount(): Int {
        return bookList.size
    }

}


class CustomViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

    fun bindItems(book: Book) {

        itemView.text_isbn.text = book.barcode.toString()
    }

}


//////////////

override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        validatePermission()

        var scanActivity = ScanActivity()

        my_recycler_view.layoutManager = LinearLayoutManager(this)
        my_recycler_view.adapter = MainAdapter(scanActivity.booksMutable)

        button_scan.setOnClickListener {
            val intent = Intent(this, ScanActivity::class.java)
            startActivity(intent)

        }

    }
/////////////////////
lass ScanActivity : AppCompatActivity(), ZXingScannerView.ResultHandler {

    private var mScannerView: ZXingScannerView? = null
    var barcode: Long = 0
    //var books = ArrayList<Book>()
    var booksMutable = mutableListOf<Book>()

    public override fun onCreate(state: Bundle?) {
        super.onCreate(state)
        mScannerView = ZXingScannerView(this)   // Programmatically initialize the scanner view
        setContentView(mScannerView)                // Set the scanner view as the content view
    }

    public override fun onResume() {
        super.onResume()
        mScannerView!!.setResultHandler(this) // Register ourselves as a handler for scan results.
        mScannerView!!.startCamera()          // Start camera on resume
    }

    public override fun onPause() {
        super.onPause()
        mScannerView!!.stopCamera()           // Stop camera on pause
    }

    override fun handleResult(rawResult: Result) {
        Toast.makeText(this,rawResult.text,Toast.LENGTH_SHORT).show()
        booksMutable.add(Book(rawResult.text.toLong()))
        val my_recycler_view = findViewById(R.id.my_recycler_view) as RecyclerView?
        my_recycler_view?.layoutManager = LinearLayoutManager(this)
        my_recycler_view?.adapter = MainAdapter(booksMutable)
        println("books size " + booksMutable.size)

        onBackPressed()

        fetchJson()

        // If you would like to resume scanning, call this method below:
        //mScannerView.resumeCameraPreview(this);


    }

    fun fetchJson(){
        val url = "http://xisbn.worldcat.org/webservices/xid/isbn/9780571276646?method=getMetadata&format=json&fl=*&callback=mymethod"

        val request =Request.Builder().url(url).build()

        val client = OkHttpClient()

         client.newCall(request).enqueue(object: Callback{
             override fun onFailure(call: Call?, e: IOException?) {
                 println("Error in executing call")
             }

             override fun onResponse(call: Call?, response: Response?) {
                 val body = response?.body()?.toString()
               //  val Jobject = JSONObject(body)
                 println("BODY" + body.toString())

             }

         })

        println()

    }
}