Hi, I am currently building a companion watch application and I use wcsession to exchanges some data within the IOS app and watchOS app. I want to know how much time maximum it would take to send a message and receive a response? Because we can't hold the user infinitely until the watch receives the necessary data? So is it handled from the wcsession itself, like sending out a timeout exception or is it necessary to handle from the developer end? If it is can anyone add a possible solution. Thanks.

Hi, I am building a companion watch os app and I want to check before sending a message from watch to phone, whether the app is installed on phone. But whenever I check for whether the companion app is installed it always returns true, even when I uninstall the mobile application (Please note this is a dependant app). Next I found out that in independant apps, watchconnectivity supports isCompanionAppInstalled, and then I ticked the extension to run as independant and then used the isCompanionAppInstalled. It always returns false regardless of whether the app is installed or not? I am not sure why this not working for either of the above 2 scenarios? How can we find whether the companion IOS app is installed in the device from the watch?

Hi, I am developing a dependant watch app and need to pass some data from the phone to watch and vice versa to sync up(Imagine login credentials). So is it secure to pass data as plain text from the mobile to watch app and vice versa? Can hackers or middleman can listen and gain the data within the communication process? Or is the data encrypted by any means default by apple?

Hi, I have created a watch only app and would need to convert it to a dependant watch app since I need to exchange data via watch connectivity? How can we convert such kind of an app? Is it possible without creating a new app, by only changing the required settings in the existing app?

Basically i had an existing project developed using swift 5. I integrated watch app, and developed it using swift UI. Now i have followed all the required steps , even followed apple documentation, but i am getting connectivity issues between my watch app and ios app.I have created the session successfully , when i send a message form watch app to ios app, it send successfully , but when i send a message from ios app to watch app, i get the error "WCSession counterpart app not installed". I have verified and cross checked all the below items bundle identifiers are correctly placed Supports running without IOS App installation is also unchecked. Session is activated successfully I am activating the session in App delegate in applicationDidFinishLaunchingWithOptions on IOS App and in onAppear function of my watch app main class I have even tried creating a new project with the same configurations like my main project, i created a dummy app using swift and added a Swift UI watch extension just like i did in my main project. The catch is i am not facing any connectivity issue in this dummy app, watch and ios app are communicating perfectly, i can receive the message successfully on both the devices using the same lines of code which i use ion my main project. I would really appreciate if someone can help me in this, i have tried almost all the solutions and wasted almost a month on this issue. I have attached my WCSession Manager code WCSession Manager Here are the snippets of my code App Delegate WatchSessionManager.sharedManager.startSession() Watch App import SwiftUI @main struct AmbitBoxApp: App {     @SceneBuilder var body: some Scene {         WindowGroup {             NavigationView {                 HomeView()             }             .onAppear {                 WatchSessionManager.sharedManager.startSession()             }         }         WKNotificationScene(controller: NotificationController.self, category: "myCategory")     } }

Hey there, I am new to Swift, Objective C, however have a reasonable amount of experience in other programming languages. Want to get some thoughts on where to begin for an app idea I have. I want to build a WatchOS app that vibrates to a metronome. However, the catch is, I need it to be synchronised to a Digital Audio Workstation (Ableton Live) running on a Macbook. A bit of background on the use-case. I play in a band, and we run backing tracks on a MacBook. In order for the band to play in time to the backing tracks, we are all fed metronome clicks in our ears. I want to be able to feel the metronome on my apple watch instead. I was thinking about hooking into the IAC driver. In my DAW software, sending midi notes (that's the metronome) to an IAC driver channel, and feeding that through to the Apple Watch to vibrate each time a midi note is detected. Obviously, this would need to have as little latency as possible because we all need to play in sync. Some of us may still be on in-ears, so audible metronome clicks and the watch vibrations need to be completely in sync. Anyway, I am confident in going off and researching and developing the many individual components of this build, but I just need some guidance about my solution design and whether something like this is even possible. Many thanks!

I'm new to Apple watch mainly because I am trying to develop a companion app. New as a user and a developer for Apple Watch. I'm following an official Apple tutorial, but it seems to make a lot of assumptions. App groups Complications (horrible choice of terminology?) In the "Update Current Complications from iOS apps" step, I have no idea how to do what it's saying. https://developer.apple.com/documentation/watchconnectivity/using_watch_connectivity_to_communicate_between_your_apple_watch_app_and_iphone_app How do I choose a "Modular" watch face? What constitutes a "Modular" watch face? I deep pressed the current (default) face and it went into an edit mode, but swiping right didn't do anything. Swiping left offered more options, but I don't think it aligns with what it's saying to do. Stuck at 1 & 2 Stuck at 1 & 2

The ios side cannot accept the data sent by the watchOS side // watch os InterfaceController import WatchKit import Foundation import WatchConnectivity class InterfaceController: WKInterfaceController, WCSessionDelegate {       func session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?) {   }       @IBOutlet var label: WKInterfaceLabel!   @IBOutlet var button: WKInterfaceButton!   override func awake(withContext context: Any?) {     // Configure interface objects here.     super.awake(withContext: context)               if(WCSession.isSupported()){      let session = WCSession.default;      session.delegate = self;      session.activate();     }           label.setText("") //    button.setTitle("Send Data")   }       @IBAction func sendData() {     print("send data")     let session = WCSession.default;     if(session.isReachable){      DispatchQueue.main.async {         print("Sending data from watch...")        session.transferUserInfo(["method": "sendDataToFlutter"])       }     }else{       print("App not reachable...")     }   }       override func willActivate() {     // This method is called when watch view controller is about to be visible to user     super.willActivate()   }       override func didDeactivate() {     // This method is called when watch view controller is no longer visible     super.didDeactivate()   }       func session(_ session: WCSession, didReceiveMessage message: [String : Any]) {     self.label.setText(message["message"] as! String)   } } // AppDelegate.h #import <Flutter/Flutter.h> #import <UIKit/UIKit.h> #import <WatchConnectivity/WatchConnectivity.h> @interface WTUserInfoHandler : NSObject <FlutterStreamHandler> @end @interface AppDelegate : FlutterAppDelegate<WCSessionDelegate> @end // AppDelegate.m #include "AppDelegate.h" #include "GeneratedPluginRegistrant.h" #import "Runner-Swift.h" @implementation WTUserInfoHandler FlutterEventSink sink; NSDictionary *info; - (void) updateUserInfo:(nonnull NSDictionary<NSString *, id> *)userInfo{   NSLog(@"Update Recieved");   if(info != userInfo){     info = userInfo;     if(sink!=nil){       sink(@[userInfo]);     }   } } - (FlutterError*)onListenWithArguments:(id)arguments eventSink:(FlutterEventSink)eventSink {   NSLog(@"Adding Flutter Listener");   sink = eventSink;   return nil; } - (FlutterError*)onCancelWithArguments:(id)arguments {   NSLog(@"Removing Flutter Listener");   if(sink!=nil){     sink = nil;   }   return nil; } @end @interface AppDelegate () @property(nonatomic, strong)WCSession *session; @property(nonatomic, strong)WTUserInfoHandler* userInfoStreamHandler; @end @implementation AppDelegate - (BOOL)application:(UIApplication *)application   didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {   if (@available(iOS 10.0, *)) {    [UNUserNotificationCenter currentNotificationCenter].delegate = (id<UNUserNotificationCenterDelegate>) self;   }  [GeneratedPluginRegistrant registerWithRegistry:self];   [self initFlutterMethodChannelWatchSession];  // Override point for customization after application launch.  return [super application:application didFinishLaunchingWithOptions:launchOptions]; } # pragma mark -----------------WCSessionDelegate start------------------------ -(void) initFlutterMethodChannelWatchSession {   FlutterViewController* controller = (FlutterViewController*)self.window.rootViewController;   FlutterMethodChannel *tipinfoChannel = [FlutterMethodChannel                       methodChannelWithName:@"com.upcwangying.apps.flutter.boilerplate"                       binaryMessenger: controller];   [tipinfoChannel setMethodCallHandler:^(FlutterMethodCall* call, FlutterResult result) {     // activate Session     if([@"initWatchSession" isEqualToString:call.method]){       [self activateSession];       result(@"WatchTips Activated");     }else if([@"sendDataToWatch" isEqualToString:call.method]){       [self sendDataToWatch: call.arguments];     } else {       result(FlutterMethodNotImplemented);;     }   }]; } - (void)sendDataToWatch:(NSString *) data {   if (self.session != nil) {     if (self.session.isPaired && self.session.isReachable) {       dispatch_async(dispatch_get_main_queue(), ^{         [self.session sendMessage:@{@"message": data} replyHandler: nil errorHandler: nil];       });     }   } } - (void)session:(WCSession *)session activationDidCompleteWithState:(WCSessionActivationState)activationState error:(nullable NSError *)error { } /** ------------------------- iOS App State For Watch ------------------------ */ /** Called when the session can no longer be used to modify or add any new transfers and, all interactive messages will be cancelled, but delegate callbacks for background transfers can still occur. This will happen when the selected watch is being changed. */ - (void)sessionDidBecomeInactive:(WCSession *)session { } /** Called when all delegate callbacks for the previously selected watch has occurred. The session can be re-activated for the now selected watch using activateSession. */ - (void)sessionDidDeactivate:(WCSession *)session {} // Event triggered when userInfo Rxd - (void)session:(nonnull WCSession *)session didReceiveUserInfo:(nonnull NSDictionary<NSString *, id> *)userInfo {   if(self.userInfoStreamHandler != nil){     [self.userInfoStreamHandler updateUserInfo:userInfo];   } } // Method used to enable the Watch session - (void)activateSession {   [self activateChannel];   [self watchSession]; } // create our eventChannel -(FlutterEventChannel *) activateChannel {   self.userInfoStreamHandler = [[WTUserInfoHandler alloc] init];   FlutterViewController* controller = (FlutterViewController*)self.window.rootViewController;   FlutterEventChannel *eventChannel = [FlutterEventChannel eventChannelWithName:@"com.upcwangying.apps.flutter.boilerplate/watchdata" binaryMessenger:controller];   [eventChannel setStreamHandler:(NSObject<FlutterStreamHandler> * _Nullable) self.userInfoStreamHandler ];   return eventChannel; } // activate session - (WCSession *)watchSession {   if (self.session == nil) {     if ([WCSession isSupported]) {       self.session = [WCSession defaultSession];       [self.session setDelegate:self];       [self.session activateSession];     } else {       NSLog(@"Error - Watch Connectivity NOT supported");     }   }   return self.session; } - (void)dealloc {   if (self.session != nil) {     [self.session setDelegate:nil];   } } # pragma mark -----------------WCSessionDelegate end------------------------ @end

confirguration nécessaire pour utiliser apple watch se gps cellular: IOS 15 ou IOS 14 (jai 1 Iphone 6s plus et IOS 14.86) merci

I have a watch app which communicates with the iPhone app fine. But when running the WCSession from the Intent extension (used for Siri) I'm getting following in the console logs: Error Domain=WCErrorDomain Code=7018 "Companion app is not installed." Can the Watch Intent extension communicate with iPhone app - if so how can I enable it?

I am using WatchConnectivity to send messages between my swift iPhone / watch app. When I receive a message on the iPhone, from the watch, I need to jump to the main thread. The problem is; when the iPhone is in an inactive/not running state it never seems to complete that action. The iPhone receives the message, but when it tries to dispatchQueue.main.async{} , it seems to time out. The code inside .async{} never gets called. Here’s the code where it receives the message on the iPhone: func session(_ session: WCSession, didReceiveMessage message: [String : Any]) { print("Message recieved: ", message) // We always make it to at least here, no matter what state the application is in. DispatchQueue.main.async { // This code is never called if the app is in an inactive/not running state. // Do something... } }

I developed an independent Apple Watch that can access network resources on its own using NSURLSession without going through the iPhone. This works fine if the iPhone is on, but if I turn the iPhone off it is not able to connect. Why does my app lose network connectivity when the iPhone is off even though it's a standalone app and the Watch is connected to my WIFI? Is there anything special I need to do to get this working? It appears that no apps work with the internet when the iPhone is off. WIFI is enabled and connected to my WIFI network under the Settings on the watch

I have a app want to add watch extension,use WatchConnectivity is success when watch and phone all active,but it is fail when watch inactive. how to do phone can send message success or trigger watch shock when watch inactive

How receive data background if app not Running? Hell, I need recive data from iPhone to my app in Apple Watch background if apple Watch app not running. in extension Delegate I use these func  session(_ session: WCSession, didReceiveMessage message: [String : Any]) and session(_ session: WCSession, didReceiveMessageData messageData: Data, replyHandler: @escaping (Data) -> Void) if app on Apple Watch data not received.

I am successfully transferring a .mov file and the correct delegate is being called from the watch counterpart. Yet when I try to reference the URL of the file that was transferred, the file is can’t be found. Is there a specific file path that transferred files are saved to? Is there another way I can download a .mov file from my iPhone device to a counterpart?

Hi there, I am trying to transfer EventKit Data like EKCalendars / EKEvents / EKReminder from iOS to watchOS via WatchConnectivity. The connection works but I cannot push these objects directly in response. I also cannot use NSKeyedArchiver since EKCalendars (example) are not able to get converted to Data. So, any Idea how I can transfer simple EventKit Data from iOS to watchOS? An addtional hint: I am already fetching these data within watchOS (so no solution) but if the device has an MDM profile it cannot fetch anything but the holiday calendar so I just wanted to test if the iPhone can fetch more (since the MDM profile is stored on iPhone, not on watch) but I can't transfer these data trough WatchConnectivity. Any hints would be nice – cannot be as hard as I think. Thanks!

I am having problems on Xcode13.3.1, Monterey 12.2.1, Apple M1 Max. Sending an UpdateApplicationContext update from a paired iPhone simulator is not received on the paired Apple Watch Simulator in the didRecieveApplicationContext. However, sendMessage from the apple watch simulator does update the iphone simulator app properly. It is however, not possible to send anything from the paired iPhone simulator to the paired Apple Watch Simulator. When working with actual devices everything works properly with WatchConnectivity with passing information back and forth via updateapplicationcontext and sendmessage calls. Can anyone confirm this is a bug or if there is something wrong with my setup?

I created a pair of fairly simple apps (iOS and watchOS) that send messages to each other. It uses the WatchConnectiivity framework. When I run the two apps in the Simulator, I can send messages from the phone to the watch, but I cannot send messages from the watch to the phone. When I attempt that I get the message "Companion app is not installed". I've seen suggestions that I need to uncheck the "Supports Running Without iOS App Installation" checkbox, but when I do that, the iOS app no longer runs in the Simulator. My code is here: https://github.com/mvolkmann/watch-with-ios. I'd love to get some hints about how to work past this.