- (void)awakeWithContext:(id)context {
    // Load image from WatchKit Extension.
    NSData *imageData;
    
    if ([[WKInterfaceDevice currentDevice] screenBounds].size.width > 136.0) {
        imageData = UIImagePNGRepresentation([UIImage imageNamed:@"42mm-Walkway"]);
    } else {
        imageData = UIImagePNGRepresentation([UIImage imageNamed:@"38mm-Walkway"]);
    }
    
    [self.glanceImage setImageData:imageData];
    [self.glanceLabel setText:@"Hello World"];
}

- (NSString *)actionForUserActivity:(NSDictionary *)userActivity context:(id *)context {
    // Set the context to meaningful data that may be in userActivity. You can also set it to data you derive from userActivity.
    *context = userActivity[@"detailInfo"];

    // The string returned should be the scene's Identifier, set in Interface Builder, for the controller you want to route the wearer to.
    return userActivity[@"controllerName"];
}

    // Use Handoff to route the wearer to the image detail controller when the Glance is tapped.
    [self updateUserActivity:@"com.example.apple-samplecode.WatchKit-Catalog" userInfo:@{
        @"controllerName": @"imageDetailController",
        @"detailInfo": @"This is some more detailed information to pass."
    }];

- (void)application:(UIApplication *)application handleWatchKitExtensionRequest:(NSDictionary *)userInfo reply:(void(^)(NSDictionary *replyInfo))reply NS_AVAILABLE_IOS(8_2);

+ (BOOL)openParentApplication:(NSDictionary *)userInfo reply:(void(^)(NSDictionary *replyInfo, NSError *error)) reply;    // launches containing iOS application on the phone

func registerSettingsAndCategories() {
    var categories = NSMutableSet()
 
    var acceptAction = UIMutableUserNotificationAction()
    acceptAction.title = NSLocalizedString("Accept", comment: "Accept invitation")
    acceptAction.identifier = "accept"
    acceptAction.activationMode = UIUserNotificationActivationMode.Background
    acceptAction.authenticationRequired = false
 
    var declineAction = UIMutableUserNotificationAction()
    declineAction.title = NSLocalizedString("Decline", comment: "Decline invitation")
    declineAction.identifier = "decline"
    declineAction.activationMode = UIUserNotificationActivationMode.Background
    declineAction.authenticationRequired = false
 
    var inviteCategory = UIMutableUserNotificationCategory()
    inviteCategory.setActions([acceptAction, declineAction],
                  forContext: UIUserNotificationActionContext.Default)
    inviteCategory.identifier = "invitation"
 
    categories.addObject(inviteCategory)
 
    // Configure other actions and categories and add them to the set...
    var settings = UIUserNotificationSettings(forTypes: (.Alert | .Badge | .Sound),
                          categories: categories)
 
    UIApplication.sharedApplication().registerUserNotificationSettings(settings)
}

application:handleActionWithIdentifier:forRemoteNotification:completionHandler:

application:handleActionWithIdentifier:forLocalNotification:completionHandle:

handleActionWithIdentifier:forRemoteNotification: 
handleActionWithIdentifier:forLocalNotification: 

- (void)didReceiveRemoteNotification:(NSDictionary *)remoteNotification withCompletion:(void (^)(WKUserNotificationInterfaceType interface))completionHandler

- (void)didReceiveLocalNotification:(UILocalNotification *)localNotification  withCompletion:(void (^)(WKUserNotificationInterfaceType interface))completionHandler

// 两个远程通知的payload 中的key.
NSString* apsKeyString = @"aps";
NSString* titleKeyString = @"title";
 
// App中特殊的Key.
NSString* customDataKey = @"cal";
NSString* invitationDateKey = @"date";
NSString* invitationLocationKey = @"loc";
NSString* invitationNotesKey = @"note";
 
- (void)didReceiveRemoteNotification:(NSDictionary *)remoteNotification withCompletion:(void(^)(WKUserNotificationInterfaceType interface)) completionHandler {
    // Get the aps dictionary from the payload.
    NSDictionary* apsDict = [remoteNotification objectForKey:apsKeyString];
 
    // Retrieve the title of the invitation.
    NSString* titleString = [apsDict objectForKey:titleKeyString];
    [self.titleLabel setText:titleString];
 
    // Extract the date and time from the custom section of the payload.
    // The date/time information is stored as the number of seconds since 1970.
    NSDictionary* customDataDict = [remoteNotification objectForKey:customDataKey];
    NSNumber* dateValue = [customDataDict objectForKey:invitationDateKey];
    NSDate* inviteDate = [NSDate dateWithTimeIntervalSince1970:[dateValue doubleValue]];
 
    // Format the date and time strings.
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
 
    // Call a custom method to get the localized date format string for the user.
    // The default date format string is "EEE, MMM d".
    dateFormatter.dateFormat = [self dateFormatForCurrentUser];
    NSString *formattedDateString = [dateFormatter stringFromDate:inviteDate];
 
    // Call a custom method to get the localized time format string for the user.
    // The default time format string is "h:mm a".
    dateFormatter.dateFormat = [self timeFormatForCurrentUser];
    NSString *formattedTimeString = [dateFormatter stringFromDate:inviteDate];
 
    // Set the date and time in the corresponding labels.
    [self.dateLabel setText:formattedDateString];
    [self.timeLabel setText:formattedTimeString];
 
    // Set the location of the meeting.
    NSString* locationString = [customDataDict objectForKey:invitationLocationKey];
    [self.locationLabel setText:locationString];
 
    // Set the invitation's notes (if any).
    NSString* notesString = [customDataDict objectForKey:invitationNotesKey];
    [self.notesLabel setText:notesString];
 
    // Tell WatchKit to display the custom interface.
    completionHandler(WKUserNotificationInterfaceTypeCustom);
}

- (void)didReceiveRemoteNotification:(NSDictionary *)remoteNotification withCompletion:(void (^)(WKUserNotificationInterfaceType))completionHandler {
    NSDictionary *newsDic = [remoteNotification objectForKey:@"aps"];
    NSString *title = [newsDic objectForKey:@"title"];
    NSString *digest = [newsDic objectForKey:@"digest"];
    [self.newsTitle setText:title];
    [self.newsDigets setText:digest];
    [self.newsTitle setTextColor:[UIColor yellowColor]];
    [self.newsDigets setTextColor:[UIColor blueColor]];
    completionHandler(WKUserNotificationInterfaceTypeCustom);
}

"aps": {
"alert": "新闻",
"title": "科比总得分超越乔丹",
"digest": "科比:一直追赶乔丹的人",
"category": "myCategory"
},

"WatchKit Simulator Actions": [
{
"title": "好棒！",
"identifier": "firstButtonAction"
},
{
"title": "什么鬼！",
"identifier": "secondButtonAction"
}
],
}