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
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
其他回答
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;
}
UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
if (types & UIRemoteNotificationTypeAlert)
// blah blah blah
{
NSLog(@"Notification Enabled");
}
else
{
NSLog(@"Notification not enabled");
}
这里我们从UIApplication获得UIRemoteNotificationType。它代表了这个应用程序在设置中的推送通知的状态,然后你可以很容易地检查它的类型
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;
}
下面是一个完整的例子,涵盖了iOS8和iOS7(以及更低版本)。请注意,在iOS8之前,你无法区分“禁用远程通知”和“仅启用锁屏查看”。
BOOL remoteNotificationsEnabled = false, noneEnabled,alertsEnabled, badgesEnabled, soundsEnabled;
if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)]) {
// iOS8+
remoteNotificationsEnabled = [UIApplication sharedApplication].isRegisteredForRemoteNotifications;
UIUserNotificationSettings *userNotificationSettings = [UIApplication sharedApplication].currentUserNotificationSettings;
noneEnabled = userNotificationSettings.types == UIUserNotificationTypeNone;
alertsEnabled = userNotificationSettings.types & UIUserNotificationTypeAlert;
badgesEnabled = userNotificationSettings.types & UIUserNotificationTypeBadge;
soundsEnabled = userNotificationSettings.types & UIUserNotificationTypeSound;
} else {
// iOS7 and below
UIRemoteNotificationType enabledRemoteNotificationTypes = [UIApplication sharedApplication].enabledRemoteNotificationTypes;
noneEnabled = enabledRemoteNotificationTypes == UIRemoteNotificationTypeNone;
alertsEnabled = enabledRemoteNotificationTypes & UIRemoteNotificationTypeAlert;
badgesEnabled = enabledRemoteNotificationTypes & UIRemoteNotificationTypeBadge;
soundsEnabled = enabledRemoteNotificationTypes & UIRemoteNotificationTypeSound;
}
if ([[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)]) {
NSLog(@"Remote notifications enabled: %@", remoteNotificationsEnabled ? @"YES" : @"NO");
}
NSLog(@"Notification type status:");
NSLog(@" None: %@", noneEnabled ? @"enabled" : @"disabled");
NSLog(@" Alerts: %@", alertsEnabled ? @"enabled" : @"disabled");
NSLog(@" Badges: %@", badgesEnabled ? @"enabled" : @"disabled");
NSLog(@" Sounds: %@", soundsEnabled ? @"enabled" : @"disabled");
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。
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