How to show a label in app on Apple Watch

Question

I've changed a label in iOS app via an api. It changed successfully. Now I want to show this label value in Apple Watch Label.
I tried doing it by InterfaceController *ic; and doing it's alloc & init and then where my api get success I'm doing ic.myLabel.text = [NSString stringWithFormat:@"%@",[tempDict objectForKey:@"summary"]];

So it is not working. Any clues?

Where are you attempting to change the label? In your WatchKit extension? You can't do it directly from the iOS app. — bgilham, Apr 16 '15 at 12:41

score 3 · Accepted Answer · answered Apr 16 '15 at 13:28

You can request data from iOS app. Need to implement this method in Watch App:

[WKInterfaceController openParentApplication:@{@"KEY":@"getValue"}
                                       reply:^(NSDictionary *replyInfo, NSError *error) {
                                      [self updateLabelWithString:replyInfo(@"value")];
                                       }];

And in iOS app AppDelegate:

- (void)application:(UIApplication *)applicationhandleWatchKitExtensionRequest:(NSDictionary *)userInfo
          reply:(void (^)(NSDictionary *replyInfo))reply
{
reply(@{@"value":@"your data"});
}

The app delegate performs the request using the provided dictionary and then returns a reply to the WatchKit extension.

You could also look into using Darwin notifications to notify the WatchKit app right away, if it's currently running. Check out MMWormhole to make this easier: https://github.com/mutualmobile/MMWormhole — bgilham, Apr 16 '15 at 13:48

How to show a label in app on Apple Watch

1 Answers1