我有一个我一直无法解决的问题。我对 iOS/Xcode 的了解有限,请见谅。
我正在尝试使用 xcode/Objective C 为 iOS 应用程序订阅 FCM 主题,但是在加载应用程序时,它没有订阅该主题,在调试器中它甚至看起来都不像在尝试。
如果我移动 [[FIRMessaging messaging] subscribeToTopic:@"/topics/channel"];
行到正下方
[FIRMessaging messaging].delegate = self;
[application registerForRemoteNotifications];
[FIRApp configure];
(以及上面的 return YES;
)然后至少我收到这条错误消息,表明它至少正在尝试。
2018-01-04 04:00:18.723760+0000 App[1049:1251125] [Firebase/Messaging][I-FCM002010] Cannot subscribe to topic: /topics/channel with token: (null)
所以按照建议here (以及许多其他地方),我试图将它移出到 didRegisterUserNotificationSettings
中,但它似乎根本没有做任何事情,调试器中也没有它的踪迹。
这是我的完整 AppDelegate.m 代码
//
// AppDelegate.m
//
#import "AppDelegate.h"
#import <UserNotifications/UserNotifications.h>
#import <Firebase/Firebase.h>
#import <FirebaseMessaging/FirebaseMessaging.h>
#import <FirebaseInstanceID/FirebaseInstanceID.h>
#import <AFNetworking/AFNetworking.h>
@import Firebase;
@interface AppDelegate () <UNUserNotificationCenterDelegate, FIRMessagingDelegate>
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[self setupNetworkReachability];
[UNUserNotificationCenter currentNotificationCenter].delegate = self;
UNAuthorizationOptions authOptions = UNAuthorizationOptionAlert | UNAuthorizationOptionSound | UNAuthorizationOptionBadge;
[[UNUserNotificationCenter currentNotificationCenter] requestAuthorizationWithOptions:authOptions completionHandler:^(BOOL granted, NSError * _Nullable error)
{
}];
[FIRMessaging messaging].delegate = self;
[application registerForRemoteNotifications];
[FIRApp configure];
//[[FIRMessaging messaging] subscribeToTopic:@"/topics/channel"];
return YES;
}
- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UNNotificationSettings *)notificationSettings
{
[[FIRMessaging messaging] subscribeToTopic:@"/topics/channel"];
NSLog(@"Topic Registered");
}
- (void)applicationWillResignActive:(UIApplication *)application
{
}
- (void)applicationDidEnterBackground:(UIApplication *)application
{
}
- (void)applicationWillEnterForeground:(UIApplication *)application
{
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
}
- (void)applicationWillTerminate:(UIApplication *)application
{
}
#pragma mark - Public Methods
+ (AppDelegate *)sharedAppDelegate
{
return (AppDelegate *)[[UIApplication sharedApplication] delegate];
}
- (void)setupNetworkReachability
{
[[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status)
{
if (status == AFNetworkReachabilityStatusReachableViaWiFi || status == AFNetworkReachabilityStatusReachableViaWWAN)
self.isNetworkAvailable = YES;
else
self.isNetworkAvailable = NO;
NSLog(@"Reachability: %@", AFStringFromNetworkReachabilityStatus(status));
}];
[[AFNetworkReachabilityManager sharedManager] startMonitoring];
}
#pragma mark - FIRMessagingDelegate Methods
- (void)messaging:(nonnull FIRMessaging *)messaging didReceiveMessage:(nonnull FIRMessagingRemoteMessage *)remoteMessage
{
NSLog(@"%@", remoteMessage.appData);
}
- (void)applicationReceivedRemoteMessage:(nonnull FIRMessagingRemoteMessage *)remoteMessage
{
NSLog(@"%@", remoteMessage.appData);
}
- (void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler
{
NSLog(@"%@", notification.request.content.userInfo);
completionHandler(UNNotificationPresentationOptionAlert + UNNotificationPresentationOptionSound);
}
@end
非常感谢任何帮助。谢谢。
只是为了更新,应用程序已经直接从 FCM 控制台接收消息,所以这部分工作正常,只是主题订阅失败了。
最佳答案
1:您应该在 [FIRMessaging messaging].delegate = self;
FIRApp configure];
2:当您发布AppDelegate.m
文件的完整代码时。所以它缺少以下方法来更新/发送 token 到 Firebase。您将在此 UIApplication 的委托(delegate)方法中收到一个 token ,您必须为 Firebase 设置它(只需将此方法放入您的 AppDelegate.m
文件中)
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken{
NSString *strDevicetoken = [[NSString alloc]initWithFormat:@"%@",[[[deviceToken description] stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"<>"]] stringByReplacingOccurrencesOfString:@" " withString:@""]];
NSLog(@"Device Token = %@",strDevicetoken);
[FIRMessaging messaging].APNSToken = deviceToken;
//NSString *fcmToken = [FIRMessaging messaging].FCMToken;
//NSLog(@"FCM registration token: %@", fcmToken);
}
现在您已经在 Firebase 成功设置了 APNS Token,您现在可以在 Firebase 订阅您想要的主题了
关于ios - 使用 Xcode/Objective C 订阅 FCM 主题时出现问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/48088532/