Encountering an OutOfMemoryError when loading a large PDF.

[kishankothiya47]

Bug description

The app crashes when loading a large PDF using this package.

OutOfMemoryError
Failed to allocate a 409743384 byte allocation with 25165824 free bytes and 115MB until OOM, target footprint 441355592, growth limit 536870912

Steps to reproduce

When loading this PDF [https://inductme-uploads.s3.eu-west-2.amazonaws.com/project-media/3f94c61c-577d-451b-9838-d06f9b1a7d62-1731960193425.pdf](Sample PDF)

Code sample

Code sample

SfPdfViewer.network(
        url,

        onDocumentLoaded: (PdfDocumentLoadedDetails details) {
        },
        onDocumentLoadFailed: (PdfDocumentLoadFailedDetails details) {

         // not capturing here
          debugPrint("Error: ${details.error}");
          debugPrint("Description: ${details.description}");
        },
        onPageChanged: (PdfPageChangedDetails details) {
        },
      )

Screenshots or Video

Screenshots / Video demonstration

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Stack Traces

Stack Traces

Exception Logs

E/AndroidRuntime(17712): 	at java.util.Arrays.copyOf(Arrays.java:3670)
E/AndroidRuntime(17712): 	at java.io.ByteArrayOutputStream.grow(ByteArrayOutputStream.java:120)
E/AndroidRuntime(17712): 	at java.io.ByteArrayOutputStream.ensureCapacity(ByteArrayOutputStream.java:95)
E/AndroidRuntime(17712): 	at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:156)
E/AndroidRuntime(17712): 	at io.flutter.plugin.common.StandardMessageCodec.writeBytes(StandardMessageCodec.java:196)
E/AndroidRuntime(17712): 	at io.flutter.plugin.common.StandardMessageCodec.writeValue(StandardMessageCodec.java:247)
E/AndroidRuntime(17712): 	at io.flutter.plugin.common.StandardMethodCodec.encodeSuccessEnvelope(StandardMethodCodec.java:61)
E/AndroidRuntime(17712): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler$1.success(MethodChannel.java:272)
E/AndroidRuntime(17712): 	at com.syncfusion.flutter.pdfviewer.SyncfusionFlutterPdfViewerPlugin.getPage(SyncfusionFlutterPdfViewerPlugin.java:187)
E/AndroidRuntime(17712): 	at com.syncfusion.flutter.pdfviewer.SyncfusionFlutterPdfViewerPlugin.onMethodCall(SyncfusionFlutterPdfViewerPlugin.java:72)
E/AndroidRuntime(17712): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:267)
E/AndroidRuntime(17712): 	at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:292)
E/AndroidRuntime(17712): 	at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:319)
E/AndroidRuntime(17712): 	at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(Unknown Source:12)
E/AndroidRuntime(17712): 	at android.os.Handler.handleCallback(Handler.java:938)
E/AndroidRuntime(17712): 	at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(17712): 	at android.os.Looper.loopOnce(Looper.java:226)
E/AndroidRuntime(17712): 	at android.os.Looper.loop(Looper.java:313)
E/AndroidRuntime(17712): 	at android.app.ActivityThread.main(ActivityThread.java:8663)
E/AndroidRuntime(17712): 	at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(17712): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:571)

On which target platforms have you observed this bug?

Android

Flutter Doctor output

Doctor output

[Add your output here]

[SamAAdd]

Just to add to this, it seems it's due to the high resolution images which are on the PDF in question - it's less about the size of the actual PDF. We've tried with a different PDF file, same size but not images and it loads fine - the one which does not load has a number of images as detailed here: https://ibb.co/GFJKRSg

This is what chat gpt has to say about it:

• The second PDF contains multiple high-resolution images, which significantly increase memory usage when the PDF Viewer plugin attempts to render them. The rendering process converts these images into bitmaps, which consume a large amount of memory.

• Bitmaps in Android require uncompressed memory, often at 4 bytes per pixel for ARGB. For example, an image at 3200x3200 resolution could require over 40 MB of memory (3200 × 3200 × 4 bytes).

• Flutter's Dart VM Memory Limit: The default memory allocation for Flutter apps may not be sufficient for rendering such resource-heavy PDFs.