I am trying to add watch extension to my existing application. Login is compulsory for my application. How can i check from watch app if user logged-in or not... and as user gets loged-in, I want to pass that login-data from the application to the watchapplication. I don't know how to pass the login data to watch application.
How can i check from watch app that if user logged-in or not into the phone application
1.1k Views Asked by adm v At
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You can do this using Watch Connectivity. Specifically sending a boolean value with transferUserInfo(). This will allow you to send the data from the iPhone application when the user either logs in or out, and it will be delivered to the watch extension in the background.
Here is an example:
func updateUserLoggedIn(_ loggedInValue : Bool) {
if WCSession.isSupported() {
WCSession.default.transferUserInfo(["User Logged In" : loggedInValue])
}
}
Then you simply handle the transfer in your watch extension:
func session(_ session: WCSession, didReceiveUserInfo userInfo: [String : Any] = [:]) {
if let userInfoFromPhone = userInfo["User Logged In"] {
// Handle Result Accordingly
}
}
Prior to WatchOS 2, you could share data between iOS companion app and watchOS app by using shared group container or iCloud to exchange data.
From WatchOS 2, since WatchKit extension now runs on Apple Watch itself, the extension must exchange data with the iOS app wirelessly. You will have to use WCSession class which is part of the WatchConnectivity framework. The framework is used to implement two-way communication between an iOS app and its paired watchOS app.
In iPhone companion app. Implement the following:
In watchOS app.