Question

我想在iOS设备中检查“推送通知选项”，如果应用程序正在运行（或从恢复模式打开）。如果选项为OFF，我使用以下代码检查：

-(void)PushNotificationServiceChecking
{
    UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];

    if (types == UIRemoteNotificationTypeNone)
    {
        NSString *msg = @"Please press ON to enable Push Notification";
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Push Notification Service Disable" message:msg delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"ON", nil];
        alert.tag = 2;
        [alert show];
    }
}

然后我使用以下代码转到“设置标签＆gt;＆gt;通知中心”，以便用户可以手动操作：

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    if (alertView.tag == 2)
    {
        if (buttonIndex == 0)
        {
            // this is the cancel button
        }
        else if (buttonIndex == 1)
        {
            [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeBadge|UIRemoteNotificationTypeSound|UIRemoteNotificationTypeAlert)];
        }
    }

}

但是，现在我遇到的问题是，它只在启动应用程序后第一次出现。它按我的意愿工作。但在那之后，如果我从“设置”关闭“推送通知选项”，它就不会给我“警告信息”。

Answer 1

在iOS 8中，您现在可以使用：

[[UIApplication sharedApplication] isRegisteredForRemoteNotifications];

要检查设置的设置方式，您可以使用：

[[UIApplication sharedApplication] currentUserNotificationSettings];

Answer 2

如果应用程序曾在registerForRemoteNotification注册，那么您可以禁用以及启用。一旦你禁用并且即将重新使用它，那么这将启用registerForRemoteNotification，而不使用Popup来发送警报。

Technical Note TN2265: Troubleshooting Push Notifications

第一次推送启用的应用注册推送通知，iOS   询问用户是否希望接收该应用的通知。一旦   用户已响应此警报，除非再次显示   设备已恢复或已卸载应用程序至少a   一天。

如果您想模拟首次运行的应用，可以离开   该应用程序已卸载一天。没有你可以实现后者   实际上等一天通过设置系统时钟一天或   更多，完全关闭设备，然后关闭设备   上。

更多信息：INFO ＆amp;＆amp; Info 2

修改：适用于checking with alert enable -

使用

 if (types & UIRemoteNotificationTypeAlert){}

而不是

if (types == UIRemoteNotificationTypeNone){}

修改： 来自doc for iOS 8 or later的最新更新，您可以查看：

- (BOOL)isRegisteredForRemoteNotifications

Answer 3

这对我有用。希望这有帮助！：d

#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)


if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"8.0")){
    UIUserNotificationType type = [[[UIApplication sharedApplication] currentUserNotificationSettings] types];
    if (type == UIUserNotificationTypeNone){
        ALERT_WITH_TITLE(@"", kMessageNotificationTurnOnRequire);
    }
}
else {
   UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
   if (types == UIRemoteNotificationTypeNone) {
       ALERT_WITH_TITLE(@"", kMessageNotificationTurnOnRequire);
   }
}

Answer 4

NSString *iOSversion = [[UIDevice currentDevice] systemVersion];
NSString *prefix = [[iOSversion componentsSeparatedByString:@"."] firstObject];
float versionVal = [prefix floatValue];

if (versionVal >= 8)
{
    if ([[UIApplication sharedApplication] currentUserNotificationSettings].types != UIUserNotificationTypeNone)
    {
        NSLog(@" Push Notification ON");
    }
    else
    {
        NSString *msg = @"Please press ON to enable Push Notification";
        UIAlertView *alert_push = [[UIAlertView alloc] initWithTitle:@"Push Notification Service Disable" message:msg delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Setting", nil];
        alert_push.tag = 2;
        [alert_push show];

        NSLog(@" Push Notification OFF");
    }
}
else
{
    UIRemoteNotificationType types = [[UIApplication sharedApplication] enabledRemoteNotificationTypes];
    if (types != UIRemoteNotificationTypeNone)
    {
        NSLog(@" Push Notification ON");
    }
    else
    {
        NSString *msg = @"Please press ON to enable Push Notification";
        UIAlertView *alert_push = [[UIAlertView alloc] initWithTitle:@"Push Notification Service Disable" message:msg delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Setting", nil];
        alert_push.tag = 2;
        [alert_push show];

        NSLog(@" Push Notification OFF");
    }
}

推送通知ON或OFF在iOS中检查

4 个答案: