Question

在我的应用中，我只是尝试触发本地通知立即弹出。它可以在模拟器和我的iOS设备上运行，但我一直在收到用户的电子邮件，说它不适用于他们（并且应用程序不会出现在通知中心）。我在实施本地通知时遗漏了什么吗？

显示警报的代码：

 UILocalNotification* localNotification = [[UILocalNotification alloc] init];
 localNotification.fireDate = [NSDate date];
 localNotification.soundName = UILocalNotificationDefaultSoundName;
 localNotification.alertBody = @"Message goes here";
 localNotification.timeZone = [NSTimeZone defaultTimeZone]; //Could be the problem?
 [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];

App Delegate方法：

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

    ...    
    // Handle launching from a notification
    UILocalNotification *locationNotification = [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
    if (locationNotification) {
        // Set icon badge number to zero
        application.applicationIconBadgeNumber = 0;
    }

    ...
}

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
    UIApplicationState state = [application applicationState];
    if (state == UIApplicationStateActive) {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Alert"
                                                        message:notification.alertBody
                                                       delegate:self cancelButtonTitle:@"OK"
                                              otherButtonTitles:nil];
        [alert show];
    }

    // Set icon badge number to zero
    application.applicationIconBadgeNumber = 0;
}

也许它是一个timeZone问题，我应该切换到presentLocalNotificationNow？而不是scheduleLocalNotification？

我不明白为什么我的用户在我的设备上运行时遇到此问题。

EDIT *** 我一直遇到iOS7用户的这个问题，不是iOS8 （我明白我必须在app delegate方法的某处注册应用程序）

Answer 1

通知和徽章需要iOS 8中的新权限。这可能是问题的根源。

如果用户拒绝通知权限并忘记了，则可能会导致问题。

Answer 2

对于iOS 8，您必须注册通知（请求用户权限）

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]){
    [application registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
    }
    // Override point for customization after application launch.
    return YES;
}

试图让UILocalNotification立即显示

2 个答案: