Ios 应用程序代表'；s应用程序：didReceiveLocalNotification:未调用

在我的应用程序委托中，永远不会调用方法

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

以下是我创建通知的方式：

UILocalNotification *notification = [[UILocalNotification alloc] init];
// set UUID, which we will store in userDefaults for later
NSMutableDictionary *myUserInfo = [[NSMutableDictionary alloc] init];
NSString *uuid = [[NSProcessInfo processInfo] globallyUniqueString];
[myUserInfo setValue:uuid forKey:KEY_UUID];
[myUserInfo setValue:@"month" forKey:KEY_UNIT];
[myUserInfo setObject:@YES forKey:KEY_RESCHEDULE];
NSInteger row = [_wurmProphylaxePickerView selectedRowInComponent:0];
switch (row) {
    case 0:
        [myUserInfo setValue:@2 forKey:KEY_FREQUENCY];
        break;
    case 1:
        [myUserInfo setValue:@4 forKey:KEY_FREQUENCY];
        break;
    case 2:
        [myUserInfo setValue:@6 forKey:KEY_FREQUENCY];
        break;
    default:
        [myUserInfo setValue:@4 forKey:KEY_FREQUENCY];
        break;
}
notification.userInfo = myUserInfo;
// calculate date for next notification, depends on the user's selection
NSDate *today = [NSDate date];
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *myComps = [[NSDateComponents alloc] init];
[myComps setMinute:1];
notification.fireDate = [calendar dateByAddingComponents:myComps toDate:today options:0];
notification.timeZone = [NSTimeZone localTimeZone];
notification.alertBody = @"My alertBody";
[[UIApplication sharedApplication] scheduleLocalNotification:notification];

这在我的应用程序代理中，但从未调用：

- (void)application:(UIApplication *)application didReceiveLocalNotification:    (UILocalNotification *)notification
{
    NSDictionary *userInfo = notification.userInfo;
    BOOL repeat = [[userInfo objectForKey:KEY_RESCHEDULE] boolValue];
    if (repeat)
    {
        NSInteger frequency = (NSInteger)[userInfo objectForKey:KEY_FREQUENCY];
        NSString *unit = (NSString *)[userInfo objectForKey:KEY_UNIT];
        NSString *uuid = (NSString *)[userInfo objectForKey:KEY_UUID];

        // calculate date for next notification
        NSDate *today = [NSDate date];
        NSCalendar *calendar = [NSCalendar currentCalendar];
        NSDateComponents *myComps = [[NSDateComponents alloc] init];
        if ([unit isEqualToString:@"month"]) {
            //[myComps setMonth:frequency];
            [myComps setMinute:frequency];
        } else {

        }

        // create new notification
        UILocalNotification *newNotification = [[UILocalNotification alloc] init];
        newNotification.fireDate = [calendar dateByAddingComponents:myComps toDate:today options:0];
        newNotification.timeZone = [NSTimeZone localTimeZone];
        newNotification.alertAction = notification.alertAction;
        newNotification.alertBody = notification.alertBody;
        newNotification.userInfo = notification.userInfo;

        // schedule it
        [[UIApplication sharedApplication] scheduleLocalNotification:newNotification];     
    }
}

---

在iOS 8上测试，不确定iOS 7…

如果应用程序在通知触发时未处于活动状态，您可以在

didFinishLaunchingWithOptions

中处理此问题，如下例所示：

---

如果启动通知时应用程序处于活动状态，则调用

didReceiveLocalNotification

。

您是否先注册通知？请参阅。是的，我有，权限警报显示，通知显示，但委托方法未调用。。。当收到此通知时，应用程序位于前台？不，它位于后台OK。我懂了。如果你把它作为答案贴出来，我会接受的。tx Rob。但是，如果应用程序在后台，并且通知显示给用户，但用户没有点击它，则会发生什么情况？如果用户选择在应用程序未运行时不单击本地通知，则不会调用任何方法。从开发人员的角度来看，这有点烦人，但从最终用户的角度来看，这很有意义。因此，如果我想指出点击本地通知打开应用程序的事实，我应该将其放在“didFinishLaunchingWithOptions”中，对吗？是的，除非你有更新的自定义操作按钮，在这种情况下，将调用

handleActionWithIdentifier

。如果应用程序已经在运行，则调用didReceiveLocalNotification。另外，请记住使用

registerUserNotificationSettings

注册本地通知。我在回答中提供的链接中描述了所有这些。

- (BOOL)application:(UIApplication *)app didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    UILocalNotification *localNotif =
        [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
    if (localNotif) {
        NSString *itemName = [localNotif.userInfo objectForKey:ToDoItemKey];
        [viewController displayItem:itemName];  // custom method
        app.applicationIconBadgeNumber = localNotif.applicationIconBadgeNumber-1;
    }
    [window addSubview:viewController.view];
    [window makeKeyAndVisible];
    return YES;
}