NSInvalidArgumentException FIRMessaging connectWithCompletio

Question

在 Firebase for iOS 上创建了该项目， 已成功安装 pod， 新增GoogleService-info.plist，
启用推送通知， 将身份验证密钥添加到火力基地， 将 $(固有(与PODS ROOTS一起添加到Other C Flags， 添加了具有 APS 环境和钥匙串访问组的权利，

向委托添加了以下实现：

#import <Firebase/Firebase.h>
#import <FirebaseInstanceID/FirebaseInstanceID.h>
#import <FirebaseMessaging/FirebaseMessaging.h>
@implementation AppDelegate
#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v)  ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)
#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v     options:NSNumericSearch] == NSOrderedAscending)
#if defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
#endif
// Copied from Apple's header in case it is missing in some cases (e.g. pre-Xcode 8 builds).
#ifndef NSFoundationVersionNumber_iOS_9_x_Max
#define NSFoundationVersionNumber_iOS_9_x_Max 1299
#endif
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
application.applicationIconBadgeNumber = 0;

if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_7_1) {
// iOS 7.1 or earlier. Disable the deprecation warnings.
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
UIRemoteNotificationType allNotificationTypes =
(UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge);
[application registerForRemoteNotificationTypes:allNotificationTypes];
#pragma clang diagnostic pop
}
else 
{
// iOS 8 or later
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_9_x_Max) {
UIUserNotificationType allNotificationTypes =
(UIUserNotificationTypeSound | UIUserNotificationTypeAlert | UIUserNotificationTypeBadge);
UIUserNotificationSettings *settings =
[UIUserNotificationSettings settingsForTypes:allNotificationTypes categories:nil];
[[UIApplication sharedApplication] registerUserNotificationSettings:settings];
[[UIApplication sharedApplication] registerForRemoteNotifications];
} 
else {
// iOS 10 or later
#if defined(__IPHONE_10_0) && __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_10_0
UNAuthorizationOptions authOptions = UNAuthorizationOptionAlert | UNAuthorizationOptionSound | UNAuthorizationOptionBadge;
[[UNUserNotificationCenter currentNotificationCenter]
requestAuthorizationWithOptions:authOptions
completionHandler:^(BOOL granted, NSError * _Nullable error) {
}];
// For iOS 10 display notification (sent via APNS)
[[UNUserNotificationCenter currentNotificationCenter] setDelegate:self];               
[[UIApplication sharedApplication] registerForRemoteNotifications];
#endif
}
}
[FIRApp configure];
// Add observer for InstanceID token refresh callback.
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(tokenRefreshNotification:)
name:kFIRInstanceIDTokenRefreshNotification object:nil];
[self removeScreen];
[window makeKeyAndVisible];
return YES;
}
// With "FirebaseAppDelegateProxyEnabled": NO
- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
[[FIRMessaging messaging] setAPNSToken: deviceToken type: FIRMessagingAPNSTokenTypeProd];
NSString *tokenString = [deviceToken description];
tokenString = [[deviceToken description] stringByTrimmingCharactersInSet:[NSCharacterSet characterSetWithCharactersInString:@"<>"]];
tokenId = [tokenString stringByReplacingOccurrencesOfString:@" " withString:@""];
self.devToken = tokenId;
[self connectToFcm];
}
- (void)tokenRefreshNotification:(NSNotification *)notification {
[self connectToFcm];
}
- (void)connectToFcm {
[[FIRMessaging messaging] connectWithCompletion:^(NSError * _Nullable error) {
if (error != nil) {
NSLog(@"Unable to connect to FCM. %@", error);
} else {
NSLog(@"Connected to FCM.");
}
}];
} 

当我运行代码时，我收到以下错误：

由于未捕获的异常'NSInvalidArgumentException', reason: '-[FIRMessaging connectWithCompletion:]: unrecognized selector sent to instance 0x280bc0c00'而终止应用

您知道可能导致错误的原因以及如何解决它吗？

Answer 1

按照@Eysner提供的内容： https://firebase.google.com/docs/cloud-messaging/ios/client

我替换了以下代码：

- (void)connectToFcm {
[[FIRMessaging messaging] connectWithCompletion:^(NSError * _Nullable error) {
if (error != nil) {
NSLog(@"Unable to connect to FCM. %@", error);
} else {
NSLog(@"Connected to FCM.");
}
}];
} 

使用以下代码：

- (void)connectToFcm {
[[FIRInstanceID instanceID] instanceIDWithHandler:^(FIRInstanceIDResult * _Nullable result, NSError * _Nullable error{
if (error != nil) {
NSLog(@"Error fetching remote instance ID: %@", error);
}
else {
NSLog(@"Remote instance ID token: %@", result.token);
NSString* message = [NSString stringWithFormat:@"Remote InstanceID token: %@", result.token];
}
}];
}

Answer 2

如果我理解正确，您对配置FIRMessaging有问题。
我没有看到我们需要的一些代码，例如 - 设置委托

[FIRMessaging messaging].delegate = self;

所以我认为你只需要一步一步地使用指南。
我希望它对您
有用 https://firebase.google.com/docs/cloud-messaging/ios/client