In the release version, it crashes

[sh4msi]

hi,
Everything is correct in debug and profile mode and works well, but in the release version, after hitting the download button, the program crashes and that's it!

[J-Dark]

Same issue for me on Android.
It works in debug mode but not in release builds where it crashes after hitting the download button.
Works fine on iOS

Edit: Actually for me the issue only occurs from obfuscated release build. it could be the same as #614 (but I'm on version 1.7.3)

[J-Dark]

I missed this in the new readme file:
@pragma('vm:entry-point') must be placed above the callback function to avoid tree shaking in release mode for Android.
Now, for me, it's working even in obfuscated release builds.

[d9media]

I have pragma present (latest version flutter_downloader) and it still crashes even without obfuscation

I had to put

@pragma('vm:entry-point')

in my downloadCallback method. now it works

[bartekpacia]

@J-Dark's solution is correct.

Closing :)

[Shubham-Narkhede]

I missed this in the new readme file: @pragma('vm:entry-point') must be placed above the callback function to avoid tree shaking in release mode for Android. Now, for me, it's working even in obfuscated release builds.

Can you please add any screenshot exactly where to put this line?

@bartekpacia @J-Dark @d9media @sh4msi

[bartekpacia]

@Shubham-Narkhede Let me know if the below snippet helps you:

@pragma('vm:entry-point')
void downloadCallback(String id, DownloadTaskStatus status, int progress) {
  // body can be anything, this is just copy-paste from my project
  debugPrint(
    'DatafilesScreen: downloader callback on background isolate: '
    'task: $id, '
    'status: $status, '
    'progress $progress',
  );

  final send = ui.IsolateNameServer.lookupPortByName('downloader_send_port');
  send?.send([id, status, progress]);
}

FlutterDownloader.registerCallback(downloadCallback);

[Shubham-Narkhede]

@Shubham-Narkhede Let me know if the below snippet helps you:

@pragma('vm:entry-point')
void downloadCallback(String id, DownloadTaskStatus status, int progress) {
  // body can be anything, this is just copy-paste from my project
  debugPrint(
    'DatafilesScreen: downloader callback on background isolate: '
    'task: $id, '
    'status: $status, '
    'progress $progress',
  );

  final send = ui.IsolateNameServer.lookupPortByName('downloader_send_port');
  send?.send([id, status, progress]);
}

FlutterDownloader.registerCallback(downloadCallback);

T

@Shubham-Narkhede Let me know if the below snippet helps you:

@pragma('vm:entry-point')
void downloadCallback(String id, DownloadTaskStatus status, int progress) {
  // body can be anything, this is just copy-paste from my project
  debugPrint(
    'DatafilesScreen: downloader callback on background isolate: '
    'task: $id, '
    'status: $status, '
    'progress $progress',
  );

  final send = ui.IsolateNameServer.lookupPortByName('downloader_send_port');
  send?.send([id, status, progress]);
}

FlutterDownloader.registerCallback(downloadCallback);

Thanks