Monday, June 1, 2020

AppDressBook: Address Book app that synchronizes contacts using a custom API server

AppDressBook is an Address Book app that synchronizes contacts using a custom API server.
It is useful for companies or associations that's want to share contacts using a unique application.
They just have to build their own server that provides the contact list and eventually an authentication method, then the server url can be shared with people engaged and used in this app.

AppDressBook is Open Source and it's built using React Native.
It works both on Android and iOS. Although it's not yet published on Apple Store. You can find the Android app here at the Google Play Store.
The backend server itself it's pretty simple, in the Docs folder you can find all the json schemas for the routes you have to serve.
Ther's a simple test server written in node.js published with the application code, you can find it in the appdressbookapisample folder. I've implemented a C# server for my company. Building the API server is really a simple job. Contacts can be secured by username and password validation. Contacts can of course be synced according to the logged in user. You can even chose to deploy your contacts without authentication.

When the application is executed for the first time, the API server must be filled. Then that server is beeing asked for settings. If authentication is required user has to authenticate, if not contacts can be synced instantly.
Contacts list is cheked against the server each 10 minutes, using the hash of the list, this is to prevent bandwith consumption.
The application itself is simple, and customizable for your needs.


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  • excuse my bad english