I posted this on stackoverflow, but I thought maybe I'd have more luck
here...
I have a strange problem where my SQL database doesn't remove itself when I
uninstall the app
I'm not creating the database in any external storage directories, and the
database is confirmed to be in its default location:
/data/data/com.example.app/databases/
After I uninstall the app, I expect all the data in that location to be
wiped, but when I run the app again from android studio the new install can
still see all of the old data
I have tried using adb to manually delete the .db file from the databases
directory, but when I run the app again the old data can still be seen
I have also tried going into the app settings and clearing the data and
cache, but that doesn't seem to help
The only places in my code where I'm doing anything "strange" with regards
to the database is I'm copying the database file to a new location on
button click:
String pathToExternalStorage = Environment.getExternalStorageDirectory
().toString();
File exportDir = new File(pathToExternalStorage, "/SensorData");
File subjectDataDir = new File(exportDir, "/subjects");
File data = Environment.getDataDirectory();
String currentDBPath = "//data//com.example.app//databases//" + DBHelper
.DATABASE_NAME;
File currentDB = new File(data, currentDBPath);
File destDB = new File(exportDir, DBHelper.DATABASE_NAME);
FileChannel src = new FileInputStream(currentDB).getChannel();
FileChannel dst = new FileOutputStream(destDB).getChannel();
dst.transferFrom(src, 0, src.size());
src.close();
dst.close();
And then running mediascanner on the newly created file so I can get
instant MTP access to it
I doubt that either of these processes could cause this to happen though?
My immediate question is how do I manually remove the database from the
phone without root access?
The bigger question is what could be causing the uninstall process to not
remove the database files? And how does a newly installed version of the
app (after an uninstall) still see the old database information?
I'm not sure how to begin figuring this out...
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