需要更多關於UILocalNotification權限

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

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

此代碼是爲UILocalNotification註冊，這也將彈出此幫助：需要更多關於UILocalNotification權限

問題1：在這種狀態下，當用戶還沒有選擇任何選項，怎麼辦當用戶選擇其中一個選項Don't Allow或Ok時，我會收到通知？所以我可以相應地執行應用。

UIUserNotificationSettings *current = [[UIApplication sharedApplication] currentUserNotificationSettings]; 
UIUserNotificationType required = UIUserNotificationTypeSound | UIUserNotificationTypeAlert; 
if(current.types & required) { 
    NSLog(@"Permission present: %lu", (unsigned long)current.types); 
} else { 
    NSLog(@"Permission not present: %lu", (unsigned long)current.types); 
}

當應用程序將啓動第一次後，使用此代碼我想取的權限用戶允許（也許他後藤設置和禁用所有類型的通知警報）。

問題2：我只是越來越號碼log像7爲我檢查的各類許可和0如果用戶已經不允許了UILocalNotification。如何正確檢查權限？

來源

2015-11-12 S.J

- （空）應用程序：（UIApplication的*）應用程序didRegisterUserNotificationSettings：（UIUserNotificationSettings *）notificationSettings。這將在用戶執行任何批准或拒絕操作時調用。 – Arjuna

對於檢查受支持的類型，您可以檢查是否（（類型＆UIRemoteNotificationTypeBadge）。也就是說，您可以使用UIUserNotificationSettings的types屬性對所需的類型進行按位AND操作。 – Arjuna

我在我的一個項目中使用了下面的方法來確定用戶是否授予了權限，或者他/她是否真的在設置中關閉了通知。將這個方法的appdelegate和檢查

-(BOOL)notificationServicesEnabled { 
BOOL isEnabled = NO; 

if ([[UIApplication sharedApplication] respondsToSelector:@selector(currentUserNotificationSettings)]){ 
    UIUserNotificationSettings *notificationSettings = [[UIApplication sharedApplication] currentUserNotificationSettings]; 

    if (!notificationSettings || (notificationSettings.types == UIUserNotificationTypeNone)) { 
     isEnabled = NO; 
    } else { 
     isEnabled = YES; 
    } 
} else { 
    UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes]; 
    if (types & UIRemoteNotificationTypeAlert) { 
     isEnabled = YES; 
    } else{ 
     isEnabled = NO; 
    } 
} 

    return isEnabled; 
}

然後你可以簡單的檢查與條件

if([self notificationServicesEnabled])

來源

2015-11-12 07:06:05

需要更多關於UILocalNotification權限

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