Question

我需要更新我们的应用程序以支持iOS 9和iOS 10，所以我的问题是使用 UNUserNotificationCenter 进行PushNotifications。

因此，对于iOS 9，我们有一个返回 UIUserNotificationSettings 结果的方法，如

- (BOOL)alertEnabled {
    UIUserNotificationSettings *theSettings = [[UIApplication sharedApplication] currentUserNotificationSettings];
    return [theSettings types] & UIUserNotificationTypeAlert;
}

使用iOS 10，我做了类似

的操作

- (void)userNotificationsAuthorization :(void (^)(BOOL alertIsActive))completion {
    [[UNUserNotificationCenter currentNotificationCenter] getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) {
        completion(settings.alertSetting == UNNotificationSettingEnabled);
    }];
}

调用它并通过完成处理程序获取它。

我的问题：是否有可能使用 getNotificationSettingsWithCompletionHandler 和返回值而不是我可以将其用于 alertEnabled 方法？

非常感谢。

更新

采用这种方法，它正在运作

- (BOOL)alertIsEnabled { __block BOOL alertIsActive = NO; if (SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(@"10.0")) { dispatch_semaphore_t sem = dispatch_semaphore_create(0); [[UNUserNotificationCenter currentNotificationCenter] getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings * _Nonnull settings) { alertIsActive = settings.alertSetting == UNNotificationSettingEnabled; dispatch_semaphore_signal(sem); }]; dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); } else { UIUserNotificationSettings *theSettings = [[UIApplication sharedApplication] currentUserNotificationSettings]; alertIsActive = [theSettings types] & UIUserNotificationTypeAlert; } return alertIsActive; }

但也许有更好的解决方案

Answer 1

因此，经过一周的测试，它对我来说运作正常。

对于我的具体问题，我创建了一个自定义类。

SpecicPush.h

{250,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE}

SpecificPush.m

#import <UIKit/UIKit.h>

typedef NS_ENUM(NSInteger , PushNotificationType) {
    PushNotificationTypeNone    = 0,      // the application may not present any UI upon a notification being received
    PushNotificationTypeBadge   = 1 << 0, // the application may badge its icon upon a notification being received
    PushNotificationTypeSound   = 1 << 1, // the application may play a sound upon a notification being received
    PushNotificationTypeAlert   = 1 << 2, // the application may display an alert upon a notification being received
};

@interface SpecificPush : NSObject

@property (nonatomic, readonly) PushNotificationType currentNotificationSettings;

+ (SpecificPush *)sharedInstance;
- (PushNotificationType)types;

@end

我使用与UIUserNotificationType相同的NS_ENUM。现在我可以轻松使用旧的实现。 Insted of

#import "SpecificPush.h"
#import <UserNotifications/UserNotifications.h>

@interface SpecificPush()
@property (nonatomic) PushNotificationType currentNotificationSettings;
@end

@implementation SpecificPush

#pragma mark - Init

static SpecificPush *instance = nil;
+ (SpecificPush *)sharedInstance
{
    @synchronized (self)
    {
        if (instance == nil)
        {
            [SpecificPush new];
        }
    }
    return instance;
}

- (instancetype)init
{
    NSAssert(!instance, @"WARNING - Instance of SpecifishPush already exists");
    self = [super init];
    if (self)
    {
        self.currentNotificationSettings = PushNotificationTypeNone;
    }

    instance = self;
    return self;
}

- (PushNotificationType)types
{
    if (IS_IOS10)
    {
        dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);

        [[UNUserNotificationCenter currentNotificationCenter] getNotificationSettingsWithCompletionHandler:^(UNNotificationSettings *settings) {
            if ((settings.soundSetting == UNNotificationSettingDisabled) && (settings.alertSetting == UNNotificationSettingDisabled) && (settings.soundSetting == UNNotificationSettingDisabled))
            {
                self.currentNotificationSettings = PushNotificationTypeNone;
            }
            if (settings.badgeSetting == UNNotificationSettingEnabled)
            {
                self.currentNotificationSettings = PushNotificationTypeBadge;
            }
            if (settings.soundSetting == UNNotificationSettingEnabled)
            {
                self.currentNotificationSettings = PushNotificationTypeSound;
            }

            if (settings.alertStyle == UNNotificationSettingEnabled)
            {
                self.currentNotificationSettings = PushNotificationTypeAlert;
            }

            dispatch_semaphore_signal(semaphore);

        }];

        dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
        dispatch_release(semaphore);
    }
    else
    {
        UIUserNotificationSettings *settings = [[UIApplication sharedApplication] currentUserNotificationSettings];

        if (settings.types == UIUserNotificationTypeNone)
        {
            self.currentNotificationSettings = PushNotificationTypeNone;
        }
        if (settings.types & UIUserNotificationTypeBadge)
        {
            self.currentNotificationSettings = PushNotificationTypeBadge;
        }
        if (settings.types & UIUserNotificationTypeSound)
        {
            self.currentNotificationSettings = PushNotificationTypeSound;
        }
        if (settings.types & UIUserNotificationTypeAlert)
        {
            self.currentNotificationSettings = PushNotificationTypeAlert;
        }
    }

    return self.currentNotificationSettings;
}
@end

我用

- (BOOL)alertEnabled {
    UIUserNotificationSettings *theSettings = [[UIApplication sharedApplication] currentUserNotificationSettings];
    return [theSettings types] & UIUserNotificationTypeAlert;
}

iOS 10/9推送通知

1 个答案: