I am creating an application in which users can interact with the contacts of their device (using phoneNumber) who have this application installed (mainly as a Whatsapp, Viber function)
Now this functionality can be done using the getContacts () function
- Saving all application registrations on my server.
- In the application, sending all contacts to the server and receiving the server’s response, registered contacts
However, this leads to synchronization problems in cases where contacts are added / deleted or existing ones are updated.
To do this, my knowledge directs me to three alternatives
- Each application starts, this getContacts () method is called so that the received data is fresh
- Not sure if this is the method used by Whatsapp and viber, its achievable, but much unnecessary processing during each run.
- You have a background poll of the server service through the getContacts () method
- This can support contact synchronization.
- However, this will not instantly update the changes. In Whatsapp, if I change the name of a contact, it is reflected almost instantly
- Register ContentObserver at ContactsContract.CONTENT_URI (actually, this is not a good idea)
Please submit your ideas
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