danjdt / android-pdfviewer

A Android PDF Viewer that render pdf using PdfRenderer and displays it in a RecyclerView.

Android PDFViewer

A Android PDF Viewer that render pdf using PdfRenderer + kotlin coroutines and displays it in a RecyclerView.

- This code will not be published as a library, but you can use it as you want.

- Requires API Level 21

How to use

    PdfViewer.Builder(rootView, lifecycleScope)
      .build()
      .load(file)

Setup options

    PdfViewer.Builder(rootView)
      .controller(PdfViewController)
      .quality(PdfPageQuality)
      .setZoomEnabled(Boolean)
      .setMaxZoom(Float)
      .setOnPageChangedListener(onPageChangedListener)
      .setOnErrorListener(onErrorListener)
      .setRenderDispatcher(Dispatchers.Default)
      .build()
      .load(file)

File load options

    pdfViewer.load(file : File)
    pdfViewer.load(url : String)
    pdfViewer.load(@RawRes resId : Int)
    pdfViewer.load(inputStream : InputStream)
    pdfViewer.load(uri : Uri)

Sample images/gifs

Scroll	Zoom

android-pdfviewer's Issues

java.lang.ClassCastException: dagger.hilt.android.internal.managers.ViewComponentManager$FragmentContextWrapper cannot be cast to android.app.Activity

Hi,
I have encountered this issue when I used PdfViewer in fragment annotated @AndroidEntryPoint. It looks like a clash between Hilt and your library. Here is the stack trace and a snippet of my implementation of PdfViewer. I had to fix this issue by using this workaround. Could you fix it in the library?

W/System.err: java.lang.ClassCastException: dagger.hilt.android.internal.managers.ViewComponentManager$FragmentContextWrapper cannot be cast to android.app.Activity
W/System.err:     at com.danjdt.pdfviewer.PdfViewer.onFileLoaded(PdfViewer.kt:68)
W/System.err:     at com.danjdt.pdfviewer.decoder.LoadFileFromUrlAsyncTask.doInBackground(LoadFileFromUrlAsyncTask.kt:19)
W/System.err:     at com.danjdt.pdfviewer.decoder.LoadFileFromUrlAsyncTask.doInBackground(LoadFileFromUrlAsyncTask.kt:12)
W/System.err:     at android.os.AsyncTask$2.call(AsyncTask.java:334)
W/System.err:     at java.util.concurrent.FutureTask.run(FutureTask.java:266)
W/System.err:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:246)
W/System.err:     at java.util.concurrent.ThreadPoolExecutor.processTask(ThreadPoolExecutor.java:1187)
W/System.err:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1152)
W/System.err:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
W/System.err:     at java.lang.Thread.run(Thread.java:784)

PdfViewer.Builder(binding.root)
    .setOnErrorListener(object : OnErrorListener {
        override fun onAttachViewError(e: Exception) {
            handleError(e)
        }
        override fun onFileLoadError(e: Exception) {
            handleError(e)
        }
        override fun onPdfRendererError(e: IOException) {
            handleError(e)
        }
    })
    .build()
    .load(args.url)

AsyncTask is deprecated, any plans to move to Coroutines?

no storage access framework support for android 29/30

free doc viewer support view word excel ppt pdf txt image in sdcard & uri & assets & url download here https://github.com/Victor2018/DocViewer

The PDF pages sequence changed.

Hi there,

thanks for the great project, however, I meet some troubles, for example, when I tried to show the PDF, I realized that its pages sequence changed.

Do you have any ideas how to fix it.

Thanks.

Is anyone maintaining?

Have you run out of time to maintain?

Its a great start but needs to be restructured to not assume all contexts are Activities (post instead of runonUiThread and similar changes)and to utilize coroutines instead of AsyncTasks... Another goal would be to use Compose instead of the standard views...

Also, it isn't hosted anywhere anymore and there is no Copyright notice to allow anyone at a reasonable company to allow for its use.

pdf signature cannot be loaded

When loading a PDF file with a signature, the signature cannot be displayed. How to solve this problem？

i can't click link into pdf

memory reservation

default of 100mb memory reservation in pool size seems a bit steep, any plans on improving this? technically you don't need to have more than 3 bitmaps allocated at any given time within the recyclerview

Click event issue of view.

Click event for zoom view.

I customize the adapter view and add some views in it. I set the click event for these views. But, I don't get the right position of clicked view in it. Please help me.

Can I add a custom view?

as title
I want to add a button. When a user click a button, the pdf viewer add a customized view on pdf viewer. And the customized view can be moved or zoomed in/out when users move or zoom in/out the pdf.

is it possible that we jump to specific page directly in PDF viewer?

update

Hello, you can update the latest code to https://mvnrepository.com/artifact/com.danjdt/pdfviewer to facilitate everyone's use, thank you.