86.4 Implementing the onLayout() Callback Method

Remaining within the MainActivity.kt file, begin by adding some import directives that will be required by the code in the onLayout() method:

package com.ebookfrenzy.customprint

.

.

import android.print.PrintDocumentInfo

import android.print.pdf.PrintedPdfDocument

import android.graphics.pdf.PdfDocument

 

class MainActivity : AppCompatActivity() {

.

.

}

Next, modify the MyPrintDocumentAdapter class to declare variables to be used within the onLayout() method:

inner class MyPrintDocumentAdapter(private var context: Context) :

                                    PrintDocumentAdapter() {

    private var pageHeight: Int = 0

    private var pageWidth: Int = 0

 ...