如何在 IBAction 中请求通知权限？

Question

在我的入门指南中，我有一个 UIPageViewController，最后包含一个“入门”屏幕，用于授权通知。用户将点击标有“启用通知”的按钮，然后将出现通知权限对话框。我该如何实现？

Answer 1

你可以输入：

Objective-C

UNUserNotificationCenter* center = [UNUserNotificationCenter currentNotificationCenter];
[center requestAuthorizationWithOptions:(UNAuthorizationOptionAlert + UNAuthorizationOptionSound)
                      completionHandler:^(BOOL granted, NSError * _Nullable error) {
                          // Enable or disable features based on authorization.
                      }];
[[UIApplication sharedApplication] registerForRemoteNotifications]; // you can also set here for local notification.

Swift

let center = UNUserNotificationCenter.current()
    center.requestAuthorization(options:[.badge, .alert, .sound]) { (granted, error) in
        // Enable or disable features based on authorization.
    }
    UIApplication.shared.registerForRemoteNotifications() // you can also set here for local notification.

在你的 IBAction.

里面

请记住还要为 Swift 添加 import UserNotifications 或为 Objective-C[=34 添加 #import <UserNotifications/UserNotifications.h> =] 在你有 IBAction 的文件中，并确保 Push Notification 在 target - Capabilities - Push notification.

下激活

Answer 2

Objective-C:

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