My app reads the user's contact list, and displays all the contacts. If the user leaves the app to add a new contact, what is the best way to have this new contact be updated into my app? For example, if you open WhatsApp and go to the contact page, then leave the app and add a new contact, upon returning to the app, the contact will be automatically updated and added to your WhatsApp contact list. This is the behavior I am looking for
Right now, the contact list in my app is simply created once upon creation of the contact list page. Is there any way to 'listen' to see if the phones contact list has been updated, and to therefore update the contact list in my app?