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Database Doesn't Import on Huawei Mate 20 Pro

 
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I have a few different phones and I think this import works on them all, except my Huawei Mate 20 Pro.  Here is the code -







The logcat I get when I run this on my Huawei is -



I thought maybe Huawei have a weird file structure or something, but there are no errors about not finding the file, it just doesn't read the info from it like others do.

Any ideas?
 
Andy Crowther
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If I use the Huawei, set a few things in the app, which then should save to a database, only so it can be exported (I'm, new to all this and this seemed an easy way to let me export and import) I then export and try and import that on my Android One device, it doesn't work.

In fact, I've uploaded the exported DB and it looks to be rather empty. This leads me to believe the issue is with Huawei using different internal storage and the problem is perhaps it never saves the database locally, so it can't export it.
 
Andy Crowther
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Everything looks to be okay when reading and writing the database internally.  How can I check this line is correct -

   
If I don't have root?  Can I use ADB to snoop round and check that is where the Huawei stores the app data?
 
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