iOS 本地通知操作在后台

Question

我正在构建一个应用程序，当用户收到本地通知时，它会通过条带和解析从他们的信用卡中扣款，除此之外还有更多内容，但这只是开始。当在应用程序内收到通知时，一切正常，但当在应用程序外收到通知时，操作未完成。

https://github.com/jackintosh7/Wake

我希望该操作在应用程序之外完成，并在用户单击通知时显示一个视图。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{


    if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]){
        [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
    }

    self.window = [[UIWindow alloc] initWithFrame:UIScreen.mainScreen.bounds];
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];

    if (StripePublishableKey) {
        [Stripe setDefaultPublishableKey:StripePublishableKey];
    }
    if (ParseApplicationId && ParseClientKey) {
        [Parse setApplicationId:ParseApplicationId
                      clientKey:ParseClientKey];
    }

    if ([[NSUserDefaults standardUserDefaults] boolForKey:@"Customer Created"]) {
        UIViewController *viewController = [storyboard instantiateViewControllerWithIdentifier:@"Home"];
        self.window.rootViewController = viewController;
    }
    else
    {
        [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"Customer Created"];
        [[NSUserDefaults standardUserDefaults] synchronize];
        UIViewController *viewController = [storyboard instantiateViewControllerWithIdentifier:@"Tutorial"];
        self.window.rootViewController = viewController;

    }

    [self.window makeKeyAndVisible];

    UILocalNotification *notification = [launchOptions valueForKey:UIApplicationLaunchOptionsLocalNotificationKey];
    if (notification) {
        [self application:application didReceiveLocalNotification:notification];
    }


    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application
{
    NSLog(@"1");




    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{




    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{



    // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{




    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application
{
    // Saves changes in the application's managed object context before the application terminates.
    [self saveContext];
}

- (void)saveContext
{
    NSError *error = nil;
    NSManagedObjectContext *managedObjectContext = self.managedObjectContext;
    if (managedObjectContext != nil) {
        if ([managedObjectContext hasChanges] && ![managedObjectContext save:&error]) {
            // Replace this implementation with code to handle the error appropriately.
            // abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
            NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
            abort();
        }
    }
}

#pragma mark - Core Data stack

// Returns the managed object context for the application.
// If the context doesn't already exist, it is created and bound to the persistent store coordinator for the application.
- (NSManagedObjectContext *)managedObjectContext
{
    if (_managedObjectContext != nil) {
        return _managedObjectContext;
    }

    NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator];
    if (coordinator != nil) {
        _managedObjectContext = [[NSManagedObjectContext alloc] init];
        [_managedObjectContext setPersistentStoreCoordinator:coordinator];
    }
    return _managedObjectContext;
}

// Returns the managed object model for the application.
// If the model doesn't already exist, it is created from the application's model.
- (NSManagedObjectModel *)managedObjectModel
{
    if (_managedObjectModel != nil) {
        return _managedObjectModel;
    }
    NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@"AlarmModel" withExtension:@"mom"];
    _managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:modelURL];
    return _managedObjectModel;
}

// Returns the persistent store coordinator for the application.
// If the coordinator doesn't already exist, it is created and the application's store added to it.
- (NSPersistentStoreCoordinator *)persistentStoreCoordinator
{
    if (_persistentStoreCoordinator != nil) {
        return _persistentStoreCoordinator;
    }

    NSURL *storeURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"AlarmModel.sqlite"];

    NSError *error = nil;
    _persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
    if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error]) {
        /*
         Replace this implementation with code to handle the error appropriately.

         abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.

         Typical reasons for an error here include:
         * The persistent store is not accessible;
         * The schema for the persistent store is incompatible with current managed object model.
         Check the error message to determine what the actual problem was.


         If the persistent store is not accessible, there is typically something wrong with the file path. Often, a file URL is pointing into the application's resources directory instead of a writeable directory.

         If you encounter schema incompatibility errors during development, you can reduce their frequency by:
         * Simply deleting the existing store:
         [[NSFileManager defaultManager] removeItemAtURL:storeURL error:nil]

         * Performing automatic lightweight migration by passing the following dictionary as the options parameter:
         @{NSMigratePersistentStoresAutomaticallyOption:@YES, NSInferMappingModelAutomaticallyOption:@YES}

         Lightweight migration will only work for a limited set of schema changes; consult "Core Data Model Versioning and Data Migration Programming Guide" for details.

         */
        NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
        abort();
    }

    return _persistentStoreCoordinator;
}

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {

    dispatch_async(dispatch_get_main_queue(), ^{

        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Wake" message:notification.alertBody delegate:nil cancelButtonTitle:@"OK" otherButtonTitles: nil];
        [alertView show];

    });

    NSString *customerId = @"cus_4ot6ggKUOp6bHg";
    NSNumber *amountInCents = [NSNumber numberWithInteger: 1000];
    [self chargeCustomer:customerId amount:(NSNumber *)amountInCents completion:^(id object, NSError *error) { }];
    NSLog(@"11");
}

-(void)chargeCustomer:(NSString *)customerId amount:(NSNumber *)amountInCents completion:(PFIdResultBlock)handler
{
    NSLog(@"22");

    [PFCloud callFunctionInBackground:@"chargeCustomer"
                       withParameters:@{
                                        @"amount":amountInCents,
                                        @"customerId":customerId
                                        }
                                block:^(id object, NSError *error) {
                                    //Object is an NSDictionary that contains the stripe charge information, you can use this as is or create, an instance of your own charge class.
                                    handler(object,error);

                                }];

}



#pragma mark - Application's Documents directory

// Returns the URL to the application's Documents directory.
- (NSURL *)applicationDocumentsDirectory
{
    return [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
}

@end

行动：

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Wake" message:notification.alertBody delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];
    [alertView show];

    NSString *customerId = @"cus_4ot6ggKUOp6bHg";
    NSNumber *amountInCents = [NSNumber numberWithInteger: 1000];
    [AppDelegate chargeCustomer:customerId amount:(NSNumber *)amountInCents completion:^(id object, NSError *error) { }];
    NSLog(@"11");
}

+(void)chargeCustomer:(NSString *)customerId amount:(NSNumber *)amountInCents completion:(PFIdResultBlock)handler
{
    NSLog(@"22");

    [PFCloud callFunctionInBackground:@"chargeCustomer"
                       withParameters:@{
                                        @"amount":amountInCents,
                                        @"customerId":customerId
                                        }
                                block:^(id object, NSError *error) {
                                    //Object is an NSDictionary that contains the stripe charge information, you can use this as is or create, an instance of your own charge class.
                                    handler(object,error);

                                }];

}

您添加的 nslog 的结果： 查看收费信息：(null) 错误：invalid_request_error：没有这样的客户：cus_4ot6ggKUOp6bHg（代码：141，版本：1.4.1） 最后一个我明白是什么问题。

Answer 1

当您的应用程序运行时 application:didReceiveLocalNotification: 正在调用，但如果您的应用程序未运行，则有关本地通知的信息将添加到 launchOptions dict；

在您的 AppDelegate 中，在 application:didFinishLaunchingWithOptions 添加以下代码：

-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

// Keep al exist code in your app...and at the END of this methods

UILocalNotification *localNotification = [launchOptions valueForKey:UIApplicationLaunchOptionsLocalNotificationKey];
if (localNotification) {
    [self application:application didReceiveLocalNotification:localNotification];
}

return YES;
}

在主线程中强制 UIAlert 是件好事：

dispatch_async(dispatch_get_main_queue(),
               ^{
                   UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Wake" message:notification.alertBody delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];
                   [alertView show];
});

新提案：

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification {

dispatch_async(dispatch_get_main_queue(), ^{

    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Wake" message:notification.alertBody delegate:nil cancelButtonTitle:@"OK" otherButtonTitles: nil];
    [alertView show];
NSString *customerId = @"cus_4ot6ggKUOp6bHg";
NSNumber *amountInCents = [NSNumber numberWithInteger: 1000];
[self chargeCustomer:customerId amount:(NSNumber *)amountInCents completion:^(id object, NSError *error) { }];

});

}

还有：

-(void)chargeCustomer:(NSString *)customerId amount:(NSNumber *)amountInCents completion:(PFIdResultBlock)handler
{


[PFCloud callFunctionInBackground:@"chargeCustomer"
                   withParameters:@{
                                    @"amount":amountInCents,
                                    @"customerId":customerId
                                    }
                            block:^(id object, NSError *error) {
                                //Object is an NSDictionary that contains the stripe charge information, you can use this as is or create, an instance of your own charge class.
                                handler(object,error);
                                NSLog(@"See the error:%@",[error localizedDescription]);
                                NSLog(@"See the charge information:%@",[object description]);

                            }];

}