ios – 请求用户在触发本地通知时显示警报

发布时间：2020-12-15 01:53:21 所属栏目：百科来源：网络整理

导读：当本地通知被触发时，我想显示一个警报，但是为了让我得到许可，当我在iPhone上运行应用程序时对我说： Attempting to schedule a local notification {fire date = Friday 13 June 2014 12 h 10 min 27 s Central European Summer Time,time zone = (null),

当本地通知被触发时，我想显示一个警报，但是为了让我得到许可，当我在iPhone上运行应用程序时对我说：

Attempting to schedule a local notification {fire date = Friday 13 June 2014 12 h 10 min 27 s Central European Summer Time,time zone = (null),repeat interval = 0,repeat count = UILocalNotificationInfiniteRepeatCount,next fire date = Friday 13 June 2014 12 h 10 min 27 s Central European Summer Time,user info = (null)} with an alert but haven’t received permission from the user to display alerts

我怎样才能做到这一点？
现在的代码是：

UILocalNotification *localNotif = [[UILocalNotification alloc] init];
    localNotif.fireDate = [[NSDate date] dateByAddingTimeInterval:timeUntilNotification];
    localNotif.soundName = UILocalNotificationDefaultSoundName;
    localNotif.alertBody = @"ZEIT!";
    localNotif.alertAction = @"Show me the Timer!";
    localNotif.applicationIconBadgeNumber = [[UIApplication sharedApplication] applicationIconBadgeNumber] +1;


    [[UIApplication sharedApplication] scheduleLocalNotification:localNotif];

解决方法

添加此代码，它将显示警报视图以请求用户的权限。

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

您可以在应用程序中添加此代码：didFinishLaunchingWithOptions;方法，以便应用程序会在您启动应用程序时询问用户，或者您可以在设置本地通知时添加此代码，这取决于您。

（编辑：李大同）

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