我正在寻找一种方法来确定用户是否有,通过设置,启用或禁用他们的推送通知我的应用程序。
当前回答
在Xamarin,以上所有的解决方案都不适合我。 这是我用的:
public static bool IsRemoteNotificationsEnabled() {
return UIApplication.SharedApplication.CurrentUserNotificationSettings.Types != UIUserNotificationType.None;
}
当你在设置中更改通知状态后,它也会得到实时更新。
其他回答
re:
这是正确的
if (types & UIRemoteNotificationTypeAlert)
但是下面也是正确的!(因为UIRemoteNotificationTypeNone是0)
if (types == UIRemoteNotificationTypeNone)
参见以下内容
NSLog(@"log:%d",0 & 0); ///false
NSLog(@"log:%d",1 & 1); ///true
NSLog(@"log:%d",1<<1 & 1<<1); ///true
NSLog(@"log:%d",1<<2 & 1<<2); ///true
NSLog(@"log:%d",(0 & 0) && YES); ///false
NSLog(@"log:%d",(1 & 1) && YES); ///true
NSLog(@"log:%d",(1<<1 & 1<<1) && YES); ///true
NSLog(@"log:%d",(1<<2 & 1<<2) && YES); ///true
swift4.0, iOS11的更新代码
import UserNotifications
UNUserNotificationCenter.current().getNotificationSettings { (settings) in
print("Notification settings: \(settings)")
guard settings.authorizationStatus == .authorized else { return }
//Not authorised
UIApplication.shared.registerForRemoteNotifications()
}
swift3.0, iOS10的代码
let isRegisteredForRemoteNotifications = UIApplication.shared.isRegisteredForRemoteNotifications
if isRegisteredForRemoteNotifications {
// User is registered for notification
} else {
// Show alert user is not registered for notification
}
从iOS9开始,swift 2.0的UIRemoteNotificationType已弃用,请使用以下代码
let notificationType = UIApplication.shared.currentUserNotificationSettings!.types
if notificationType == UIUserNotificationType.none {
// Push notifications are disabled in setting by user.
}else{
// Push notifications are enabled in setting by user.
}
只需检查是否启用了推送通知
if notificationType == UIUserNotificationType.badge {
// the application may badge its icon upon a notification being received
}
if notificationType == UIUserNotificationType.sound {
// the application may play a sound upon a notification being received
}
if notificationType == UIUserNotificationType.alert {
// the application may display an alert upon a notification being received
}
我尝试使用@Shaheen ghassy提供的解决方案支持iOS 10及以上版本,但发现剥夺问题enabledRemoteNotificationTypes。所以,我找到的解决方案是使用isregisteredforremotenotification而不是enabledRemoteNotificationTypes,这在iOS 8中已弃用。下面是我最新的解决方案,对我来说非常有效:
- (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 {
if ([[UIApplication sharedApplication] isRegisteredForRemoteNotifications]) {
isEnabled = YES;
} else{
isEnabled = NO;
}
}
return isEnabled;
}
我们可以很容易地调用这个函数,访问它的Bool值,并将其转换为字符串值:
NSString *str = [self notificationServicesEnabled] ? @"YES" : @"NO";
希望它也能帮助到其他人:) 快乐的编码。
为了完成这个答案,它可以这样工作……
UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
switch (types) {
case UIRemoteNotificationTypeAlert:
case UIRemoteNotificationTypeBadge:
// For enabled code
break;
case UIRemoteNotificationTypeSound:
case UIRemoteNotificationTypeNone:
default:
// For disabled code
break;
}
编辑:这是不对的。因为这些是位智慧的东西,它不会与开关工作,所以我结束使用这个:
UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
UIRemoteNotificationType typesset = (UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge);
if((types & typesset) == typesset)
{
CeldaSwitch.chkSwitch.on = true;
}
else
{
CeldaSwitch.chkSwitch.on = false;
}
在最新版本的iOS中,这种方法已被弃用。支持iOS 7和iOS 8使用:
UIApplication *application = [UIApplication sharedApplication];
BOOL enabled;
// Try to use the newer isRegisteredForRemoteNotifications otherwise use the enabledRemoteNotificationTypes.
if ([application respondsToSelector:@selector(isRegisteredForRemoteNotifications)])
{
enabled = [application isRegisteredForRemoteNotifications];
}
else
{
UIRemoteNotificationType types = [application enabledRemoteNotificationTypes];
enabled = types & UIRemoteNotificationTypeAlert;
}
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