use ViewPager2 at pdf viewer

app/build.gradle

@@ -65,7 +65,7 @@ android {
 
 dependencies {
     implementation 'com.github.SimpleMobileTools:Simple-Commons:b452494768'
-    implementation 'com.github.tibbi:PdfViewPager:1bc22f031a'
+    implementation 'com.github.tibbi:PdfViewPager:6f9641fd2c'
     implementation 'com.github.Stericson:RootTools:df729dcb13'
     implementation 'com.github.Stericson:RootShell:1.6'
     implementation 'com.alexvasilkov:gesture-views:2.5.2'

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/PDFViewerActivity.kt

@@ -6,8 +6,10 @@ import android.graphics.Color
 import android.os.Bundle
 import android.print.PrintAttributes
 import android.print.PrintManager
+import android.view.View
 import android.view.WindowManager
 import android.widget.RelativeLayout
+import androidx.viewpager2.widget.ViewPager2
 import com.simplemobiletools.commons.extensions.*
 import com.simplemobiletools.commons.helpers.REAL_FILE_PATH
 import com.simplemobiletools.commons.helpers.isPiePlus
@@ -15,14 +17,13 @@ import com.simplemobiletools.filemanager.pro.R
 import com.simplemobiletools.filemanager.pro.extensions.hideSystemUI
 import com.simplemobiletools.filemanager.pro.extensions.showSystemUI
 import com.simplemobiletools.filemanager.pro.helpers.PdfDocumentAdapter
-import es.voghdev.pdfviewpager.library.adapter.BasePDFPagerAdapter
 import es.voghdev.pdfviewpager.library.adapter.PDFPagerAdapter
+import es.voghdev.pdfviewpager.library.adapter.PdfErrorHandler
 import kotlinx.android.synthetic.main.activity_pdf_viewer.*
 
 class PDFViewerActivity : SimpleActivity() {
     private var realFilePath = ""
     private var isFullScreen = false
-    private var adapter: BasePDFPagerAdapter? = null
 
     override fun onCreate(savedInstanceState: Bundle?) {
         showTransparentTop = true
@@ -56,11 +57,6 @@ class PDFViewerActivity : SimpleActivity() {
         window.navigationBarColor = Color.TRANSPARENT
     }
 
-    override fun onDestroy() {
-        super.onDestroy()
-        adapter?.close()
-    }
-
     private fun setupMenu() {
         (pdf_viewer_appbar.layoutParams as RelativeLayout.LayoutParams).topMargin = statusBarHeight
         pdf_viewer_toolbar.menu.apply {
@@ -99,19 +95,16 @@ class PDFViewerActivity : SimpleActivity() {
             return
         }
 
+        pdf_viewer.orientation = ViewPager2.ORIENTATION_VERTICAL
         pdf_viewer.setBackgroundColor(getProperBackgroundColor())
 
-        adapter = PDFPagerAdapter.Builder(this)
-            .setPdfPath(uri.toString())
-            .setOnPageClickListener {
-                toggleFullScreen()
-            }
-            .setErrorHandler { throwable ->
-                showErrorToast(throwable.toString())
-            }
-            .create()
+        val clickListener = View.OnClickListener {
+            toggleFullScreen()
+        }
 
-        pdf_viewer.adapter = adapter
+        val errorHandler = PdfErrorHandler { throwable -> showErrorToast(throwable.toString()) }
+
+        pdf_viewer.adapter = PDFPagerAdapter(this, clickListener, errorHandler, uri.toString())
 
         showSystemUI(true)
 

app/src/main/res/layout/activity_pdf_viewer.xml

@@ -6,7 +6,7 @@
     android:layout_height="wrap_content"
     app:layout_behavior="@string/appbar_scrolling_view_behavior">
 
-    <es.voghdev.pdfviewpager.library.PDFViewPager
+    <androidx.viewpager2.widget.ViewPager2
         android:id="@+id/pdf_viewer"
         android:layout_width="match_parent"
         android:layout_height="match_parent" />