Watch Connectivity not working - objective-c

Question

I am trying to create an app where I can send information from an apple watch to my ios Parent App. I have written the code for it but when I run the WatchConnectivity App, the information does not transfer between the apple watch and the parent ios app. This may be a problem with my code or it may be because for some reason the watch does not start with the app. I have to go to the simulator and click on the app to get it started. Is this why my code is not working?
InterfaceController.m
#import "InterfaceController.h"
#import <WatchConnectivity/WatchConnectivity.h>
#interface InterfaceController() <WCSessionDelegate>
#property (strong, nonatomic) WCSession *session;
#end
#implementation InterfaceController
-(instancetype)init {
self = [super init];
if (self) {
if ([WCSession isSupported]) {
self.session = [WCSession defaultSession];
self.session.delegate = self;
[self.session activateSession];
}
}
return self;
}
- (IBAction)catPressed {
[self sendText:#"cat"];
}
- (IBAction)dogPressed {
[self sendText:#"dog"];
}
- (IBAction)pandaPressed {
[self sendText:#"panda"];
}
- (IBAction)bunnyPressed {
[self sendText:#"bunny"];
}
-(void)sendText:(NSString *)text {
NSDictionary *applicationDict = #{#"emoji":text};
[self.session updateApplicationContext:applicationDict error:nil];
}
ViewController.m
#import "ViewController.h"
#import <WatchConnectivity/WatchConnectivity.h>
#interface ViewController () <WCSessionDelegate>
#property (weak, nonatomic) IBOutlet UILabel *textLabel;
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
if ([WCSession isSupported]) {
WCSession *session = [WCSession defaultSession];
session.delegate = self;
[session activateSession];
NSLog(#"HIIII");
}
}
- (void)session:(nonnull WCSession *)session didReceiveApplicationContext:(nonnull NSDictionary<NSString *,id> *)applicationContext {
NSString *text = [applicationContext objectForKey:#"text"];
dispatch_async(dispatch_get_main_queue(), ^{
[self.textLabel setText:[NSString stringWithFormat:#"Text: %#", text]];
});
}

Answer 1

It turns out that I needed to open the parent app on the iPhone first to start sharing information between the iPhone and Watch. Thanks to MSU_Bulldog for suggesting this idea.