How to update openParentApplication for Watch OS 2? - ios

Question

I have a watch app that needs to communicate with the parent app to get some information. This should happen while only using the watch and the phone in a pocket. It used to work like this:
In the InterfaceController on the watch:
[InterfaceController openParentApplication:request reply:^(NSDictionary *replyInfo, NSError *error) {
// handle response from phone
}];
In the AppDelegate of the phone:
- (void)application:(UIApplication *)application handleWatchKitExtensionRequest:(NSDictionary *)userInfo reply:(void (^)(NSDictionary *))reply
NSDictionary *response = // generate response
reply(response);
}
I tried to change the code in the InterfaceController to:
[[WCSession defaultSession] sendMessage:request
replyHandler:^(NSDictionary *reply) {
}
errorHandler:^(NSError *error) {
}
];
And the code in the AppDelegate to this which never seems to get called:
- (void)session:(WCSession *)session didReceiveMessage:(NSDictionary<NSString *,id> *)message replyHandler:(void (^)(NSDictionary<NSString *,id> *replyMessage))replyHandler {
// this never gets called
}
I've seen examples of using sendMessage on the watch, but they all require the delegate to be in a ViewController on the phone that is open. Is there a way to get information from the parent app on the phone while the phone is not being used?

Answer 1

If this helps anyone, I figured out that you have to run it on the main thread.
- (void)session:(WCSession *)session didReceiveMessage:(NSDictionary<NSString *,id> *)message replyHandler:(void (^)(NSDictionary<NSString *,id> *replyMessage))replyHandler {
dispatch_async(dispatch_get_main_queue(), ^{
// do stuff here
replyHandler(replyDictionary);
});
}