DB Export improvements about android-imsi-catcher-detector

[xLaMbChOpSx]

@E3V3A I did have a toast message displaying once the export was successful but must have somehow removed it when I changed to CSV formats, I will add a AlertDialog to indicate if successful and where the export was made to.

The reason there is 3 files is because there are 3 database tables:

1. Cell Info
2. Signal Strength
3. Location

This could be changed but was the initial setup of RawPhone so I have just gone with that, I was going to place it all into a single table but when I think it through it does make sense to keep the three as we do allow tracking of three distinct items at the moment.

[SecUpwN]

@xLaMbChOpSx, please keep it in 3 separate DB tables and add back the toast message.

[xLaMbChOpSx]

Yes I have added an alert and also significantly improved the dB helper regarding inserting and updating records, I have also added a new table to hold the data downloaded from OpenCellID so this can be used for analysis etc. The only drawback from this is installing the new version will require a database update which results in all data being lost.

[E3V3A]

@xLaMbChOpSx No worry about data loss, we're still in alpha... :) But about 3 separate CSV files, I do not agree. I see no point of having 3 files at all. To be able to easily parse these, they have to become merged anyway, that is the whole point of "CSV" I think. But the questions goes deeper. What is the purpose of the export? Perhaps to share data from similar locations and/or different times? Or perhaps for detailed analysis at a later stage with different software. etc. It doesn't matter if each row is a 1000 columns long, but we're never going to have that much data.

However, we can leave this option open for now, not to spend time on these details, right now. In the meantime I will have to look at the DB structure to see what makes sense.

[E3V3A]

I'll close this with the added tag "remember_this".