debugging输出提到我应该要求应用程序徽章权限

我做了一个非常简单的应用程序，可以在计时器运行时在后台运行。 如果应用程序仍然在后台，计时器结束，它将发送本地通知，并将应用程序徽章设置为1.当我启动应用程序，我总是清除它。 我注意到，安装Xcode 6后，每次启动应用程序时都会收到以下消息：

“尝试标记应用程序图标，但尚未获得用户的许可来标记应用程序”

很明显，我的应用程序将徽章设置为0来清除文本。 我在哪里设置这些权限或请求他们？ 现在是否被视为推送通知？

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问题已经解决，答案在下面发布。 底线是，你需要从用户那里得到任何forms的通知的确认，而过去只有推送通知才是真实的。

Answer 1

我最终没有使用应用程序标志，而放弃了我在此处发布的初始代码片段。 既然现在还有人在阅读和评论这个问题，我也会在这里添加我的工作电stream解决scheme。 它包含对iOS7的检查，但是我不使用callback方法。 此外，这个版本不只是要求应用程序徽章的权限了。

解

UIUserNotificationSettings* notificationSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil]; [[UIApplication sharedApplication] registerUserNotificationSettings:notificationSettings]; 

这是我现在使用的

.h文件

 #import <Foundation/Foundation.h> @interface NotificationPermissionHandler : NSObject + (void)checkPermissions; + (bool)canSendNotifications; @end 

.m文件：

 #import "NotificationPermissionHandler.h" @implementation NotificationPermissionHandler static const UIUserNotificationType USER_NOTIFICATION_TYPES_REQUIRED = UIUserNotificationTypeAlert | UIUserNotificationTypeSound; static const UIRemoteNotificationType REMOTE_NOTIFICATION_TYPES_REQUIRED = UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeSound; + (void)checkPermissions; { bool isIOS8OrGreater = [[UIApplication sharedApplication] respondsToSelector:@selector(registerUserNotificationSettings:)]; if (!isIOS8OrGreater) { [NotificationPermissionHandler iOS7AndBelowPermissions]; return; } [NotificationPermissionHandler iOS8AndAbovePermissions]; } + (void)iOS7AndBelowPermissions { [[UIApplication sharedApplication] registerForRemoteNotificationTypes:REMOTE_NOTIFICATION_TYPES_REQUIRED]; } + (void)iOS8AndAbovePermissions; { if ([NotificationPermissionHandler canSendNotifications]) { return; } UIUserNotificationSettings* requestedSettings = [UIUserNotificationSettings settingsForTypes:USER_NOTIFICATION_TYPES_REQUIRED categories:nil]; [[UIApplication sharedApplication] registerUserNotificationSettings:requestedSettings]; } + (bool)canSendNotifications; { UIApplication *application = [UIApplication sharedApplication]; bool isIOS8OrGreater = [application respondsToSelector:@selector(currentUserNotificationSettings)]; if (!isIOS8OrGreater) { // We actually just don't know if we can, no way to tell programmatically before iOS8 return true; } UIUserNotificationSettings* notificationSettings = [application currentUserNotificationSettings]; bool canSendNotifications = notificationSettings.types == USER_NOTIFICATION_TYPES_REQUIRED; return canSendNotifications; } @end 

这是我的第一个解决scheme

我只是把它作为初步讨论的参考。 此代码不被维护。

 UIUserNotificationSettings* notificationSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge]; [[UIApplication sharedApplication] registerUserNotificationSettings:notificationSettings]; 

您也可以通过执行以下操作将权限堆叠到一个请求中：

 UIUserNotificationSettings* notificationSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound categories:nil]; [[UIApplication sharedApplication] registerUserNotificationSettings:notificationSettings]; 

另外从iOS 8开始，可以找出用户允许的警报types：

 UIUserNotificationSettings* notificationSettings = [[UIApplication sharedApplication] currentUserNotificationSettings]; if (notificationSettings.types == UIUserNotificationTypeBadge) { // change the badge } 

我结束了使用这个代码：

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; if (![defaults objectForKey:@"first_run"]) { [self setDefaults]; } [self askAlertPermissions]; if ([self canChangeBadge]) { [self setBadge:0]; } return YES; } - (void)setDefaults; { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; [defaults setObject:[NSNumber numberWithBool:NO] forKey:@"alerts_allowed"]; [defaults setObject:[NSDate date] forKey:@"first_run"]; // More defaults if needed [defaults synchronize]; } - (void)askAlertPermissions; { UIUserNotificationSettings* notificationSettings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert | UIUserNotificationTypeBadge | UIUserNotificationTypeSound categories:nil]; [[UIApplication sharedApplication] registerUserNotificationSettings:notificationSettings]; } // This will be called only after confirming your settings - (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings; { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; // There is also a built in method to find out if the user has appropriate settings, you might want to use that instead if you just want to know what the setting is [defaults setObject:[NSNumber numberWithBool:YES] forKey:@"alerts_allowed"]; } - (bool)canChangeBadge; { UIUserNotificationSettings* notificationSettings = [[UIApplication sharedApplication] currentUserNotificationSettings]; return notificationSettings.types == UIUserNotificationTypeBadge; } 

更多阅读：

https://developer.apple.com/library/content/releasenotes/General/WhatsNewIniOS/Articles/iOS8.html

https://developer.apple.com/documentation/uikit/uiapplication