Android Question Synchronization of a db between two Android devices

[LucaMs]

Hi all.

Please, read my "signature" first

Surely, someone more experienced than me about the mobile, has already addressed this issue.

What is the best way (rapid development) to manage the synchronization of a db between two Android devices (using B4A, of course) and without going through the internet (any server type)?

I intend to refer both to the medium (wifi-bluetooth-wifidirect) that the programming strategies (special fields in the db?).

Are there specialized libraries or classes for this?

I thank you in advance for your answers

 

[Erel]

The communication medium depends on the requirements. If you can use wifi.

You can add a "modified" column in each of your tables and then when the two devices connect send all the new records to each of the devices.

You should use AsyncStreams to send the data. Check AsyncStreamsObject example.

 

[LucaMs]

The communication medium depends on the requirements. If you can use wifi.

You can add a "modified" column in each of your tables and then when the two devices connect send all the new records to each of the devices.

You should use AsyncStreams to send the data. Check AsyncStreamsObject example.

Ok, many thanks

 

[luke2012]

Hi all.

Please, read my "signature" first

Surely, someone more experienced than me about the mobile, has already addressed this issue.

What is the best way (rapid development) to manage the synchronization of a db between two Android devices (using B4A, of course) and without going through the internet (any server type)?

I intend to refer both to the medium (wifi-bluetooth-wifidirect) that the programming strategies (special fields in the db?).

Are there specialized libraries or classes for this?

I thank you in advance for your answers

Hi Luca,
but the RDC doesn't require internet or I'm wrong ?

 

[LucaMs]

Hi Luca,
but the RDC doesn't require internet or I'm wrong ?

But I do not intend to use the RDC.

I think I'll use just wifi direct (or BlueTooth or both, better) to send simple text file with information about the changed records

 

[luke2012]

Could be an Idea.
But I think that it's a complicated procedure.
For example :

If two users make changes to the same information how do you handle this (for example a catalog update) ?

 

[LucaMs]

Could be an Idea.
But I think that it's a complicated procedure.
For example :

If two users make changes to the same information how do you handle this (for example a catalog update) ?

My app has no great pretensions, the alignment must not be instantaneous.

However, in each line of text, I'll put the date and time of the change.

For my purpose, this will be enough.