Xcode Watchkit OpenParentApplication目标-C

Question

Hey I have made an application for my phone that can unlock/lock etc my car. Basically the iphone interface is just 4 buttons: lock, unlock, trunk, and connect. When ever I press a button a writes something to my arduino located inside of my car. I was wondering if I could "copy" these four buttons onto my apple watch. What I mean by that is that can I use openParentApplication to do that or is there some other command I could use to simulate so say button presses on my iphone when the button is clicked on my apple watch.

Code for Iphone buttons:

- (IBAction)lockCar:(UIButton *)sender;{
    NSString *string = @"l";
    NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
    if (bleShield.activePeripheral.state == CBPeripheralStateConnected) {
        [bleShield write:data];
    }
}

- (IBAction)trunkCar:(UIButton *)sender;{
    NSString *string = @"t";
    NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
    if (bleShield.activePeripheral.state == CBPeripheralStateConnected) {
        [bleShield write:data];
    }

}

- (IBAction)unlockCar:(UIButton *)sender;{
    NSString *string = @"u";
    NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
    if (bleShield.activePeripheral.state == CBPeripheralStateConnected) {
        [bleShield write:data];
    }
}

Code for Apple Watch so far:

- (IBAction)carConnect {
}

- (IBAction)carUnlock {
}

- (IBAction)carLock {
}

- (IBAction)carTrunk {
}

Answer 1

You can use WCSession to establish communication between the WatchKit extension and the companion app. Communication channel is established as:

if ([WCSession isSupported]) {
    WCSession* session = [WCSession defaultSession];
    session.delegate = self;
    [session activateSession];
}

The WCSessionDelegate must also be implemented to respond messages.

The session must be activated on each side. Then you can send messages with sendMessage:replyHandler:errorHandler: and receive with session:didReceiveMessage:replyHandler: to execute those tasks.

I recommend reading the WatchKit Class reference and this article on Watchkit communication patterns .