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13 Jul 2017
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TOPIC: support read-only documents

support read-only documents 3 years 7 months ago #7019

  • arlomedia
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When integrating PDFViewer into my app for the first time, I tried opening a PDF file that I had copied into a Documents folder on my Android device. The app kept crashing, and the LogCat only gave the following error, with no stack trace:
A/libc﹕ Fatal signal 11 (SIGSEGV) at 0xdeadd00d (code=1)

I tracked the problem down to the open method in util.PDFFileStream, which opens all files with "rw" permissions. I changed the permissions to "r" and everything worked well. The I added a wrapper class that allows me to pass in the desired permissions, without affecting any calls to this method that other parts of the library might be making.

This seems like a big roadblock that new developers would run into. Shouldn't the library handle read-only as well as read-write files, or at least show a warning message if it encounters incorrect file permissions?

I'm new to PDFViewer and new to Android, so maybe there's something I don't understand about how this is set up.

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