Android Pdfviewer / Fragment

417/5000 Hello I have a pdfview that works perfectly, for against it I can not add it to a fragment I use: implementation 'com.github.barteksc: android-pdf-viewer: 2.8.2' implemen

Solution 1:

• I hope this help you

• this code in Kotlin read PDF file from Assets folder

• and display it in fragment

  classPdfRendererBasicFragment : Fragment(), View.OnClickListener {
  
  
         privateval FILENAME = "table.pdf"privateval STATE_CURRENT_PAGE_INDEX = "current_page_index"privateval TAG = "PdfRendererBasicFragment"privateval INITIAL_PAGE_INDEX = 0privatelateinitvar fileDescriptor: ParcelFileDescriptor
         privatelateinitvar pdfRenderer: PdfRenderer    
         privatelateinitvar currentPage: PdfRenderer.Page    
         privatelateinitvar imageView: ImageView   
         privatelateinitvar btnPrevious: Button
         privatelateinitvar btnNext: Button
         privatevar pageIndex: Int = INITIAL_PAGE_INDEX
         overridefunonCreateView(
             inflater: LayoutInflater,
                  container: ViewGroup?,
                        savedInstanceState: Bundle?
           ): View {
         return inflater.inflate(R.layout.fragment_pdf_renderer_basic, container, false)
           }
  
            overridefunonViewCreated(view: View, savedInstanceState: Bundle?) {
            super.onViewCreated(view, savedInstanceState)
            imageView = view.findViewById(R.id.image)
            btnPrevious = view.findViewById<Button>(R.id.previous).also {   it.setOnClickListener(this) }
            btnNext = view.findViewById<Button>(R.id.next).also {  it.setOnClickListener(this)}
  
          if (savedInstanceState != null) {
           pageIndex = savedInstanceState.getInt(STATE_CURRENT_PAGE_INDEX,   INITIAL_PAGE_INDEX)
           } else {
          pageIndex = INITIAL_PAGE_INDEX
           }
              }
  
          @SuppressLint("LongLogTag")overridefunonStart() {
              super.onStart()
                   try {
                       openRenderer(activity)
                              showPage(pageIndex)
                      } catch (e: IOException) {
                          Log.d(TAG, e.toString())
                    }
                      }
  
                  @SuppressLint("LongLogTag")overridefunonStop() {
                    try {
                      closeRenderer()
                   } catch (e: IOException) {
                      Log.d(TAG, e.toString())
                        }
                    super.onStop()
                          }
  
                overridefunonSaveInstanceState(outState: Bundle) {
                    outState.putInt(STATE_CURRENT_PAGE_INDEX, currentPage.index)
                    super.onSaveInstanceState(outState)
                       }
  
  
                    @Throws(IOException::class)privatefunopenRenderer(context: Context?) {
                    if (context == null) returnval file = File(context.cacheDir, FILENAME)
                  if (!file.exists()) {
                  val asset = context.assets.open(FILENAME)
                  val output = FileOutputStream(file)
                  val buffer = ByteArray(1024)
                  var size = asset.read(buffer)
                  while (size != -1) {
                  output.write(buffer, 0, size)
                 size = asset.read(buffer)
                 }
                 asset.close()
                    output.close()
                   }
              fileDescriptor = ParcelFileDescriptor.open(file,        ParcelFileDescriptor.MODE_READ_ONLY)
  
                   pdfRenderer = PdfRenderer(fileDescriptor)
                    currentPage = pdfRenderer.openPage(pageIndex)
                     }
  
                     @Throws(IOException::class)privatefuncloseRenderer() {
                     currentPage.close()
                     pdfRenderer.close()
                      fileDescriptor.close()
                     }
  
                   privatefunshowPage(index: Int) {
                  if (pdfRenderer.pageCount <= index) return
  
  
               currentPage.close()
  
              currentPage = pdfRenderer.openPage(index)
  
              val bitmap = createBitmap(currentPage.width, currentPage.height,           Bitmap.Config.ARGB_8888)
  
  
              currentPage.render(bitmap, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY)
             imageView.setImageBitmap(bitmap)
            updateUi()
                }
                privatefunupdateUi() {
                val index = currentPage.index
                val pageCount = pdfRenderer.pageCount
               btnPrevious.isEnabled = (0 != index)
              btnNext.isEnabled = (index + 1 < pageCount)
  
              }
  
  
               fungetPageCount() = pdfRenderer.pageCount
  
               overridefunonClick(view: View) {
              when (view.id) {
              R.id.previous -> {
  
             showPage(currentPage.index - 1)
             }
              R.id.next -> {
                         showPage(currentPage.index + 1)
                }
             }
            }
  
            }