XML parse blocking the UI about dart-xml HOT 5 CLOSED

Ultimately you should probably ask in a Flutter forum how to run and debug computationally expensive operations.

However, I suspect in your case the problem it is not only the time it takes to read the file, but also the size of the data. A typical solution is to use an event-based reader xml_events.dart that can incrementally (non-blocking) read the input and does not keep the complete document tree in memory.

If this is not an option, I recommend converting the XML file to a DB as part of the build process.

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So if I understand correctly, the problem is not XML parsing but passing huge objects list.

In this case local database may be useful. I.e. isolate saves data to db after parsing, and then you query data on demand

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@soska12 this approach works for me

from dart-xml.

@soska12 this approach works for me

yes with small amount of that that works, but with a file with 600k+ lines it also freezes the UI when passing data back from isolate.

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I am closing this issue, because — as far as I can understand — there is nothing I can do here.

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