中文'IOSExpo推送通知在应用程序被杀死状态下无法接收

在Expo文档中提供了解决这个问题的方法。首先，需要在您的应用中添加一个Firebase配置。然后，使用Expo提供的API注册推送通知令牌并将其发送到您的服务器。

在接收到推送通知时，Expo客户端将自动显示通知。但是，如果您的应用程序被杀死，您需要重写Expo客户端的AppDelegate.m文件，以便它可以正确处理推送通知。

以下是一个AppDelegate.m文件的示例，它将确保在应用程序被杀死时仍可以接收推送通知：

#import "AppDelegate.h"
#import <Firebase.h>
#import <FirebaseMessaging.h>
#import <UserNotifications/UserNotifications.h>
#import <React/RCTBridge.h>
#import <React/RCTBundleURLProvider.h>
#import <React/RCTRootView.h>

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  [FIRApp configure];
  
  [UNUserNotificationCenter currentNotificationCenter].delegate = self;
  [FIRMessaging messaging].delegate = self;
  
  RCTBridge *bridge = [[RCTBridge alloc] initWithDelegate:self launchOptions:launchOptions];
  RCTRootView *rootView = [[RCTRootView alloc] initWithBridge:bridge
                                                   moduleName:@"YourAppName"
                                            initialProperties:nil];
  
  rootView.backgroundColor = [[UIColor alloc] initWithRed:1.000 green:1.000 blue:1.000 alpha:1];
  
  self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
  
  UIViewController *rootViewController = [UIViewController new];
  rootViewController.view = rootView;
  
  self.window.rootViewController = rootViewController;
  [self.window makeKeyAndVisible];

  [self registerForRemoteNotifications];
  
  return YES;
}

- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
  NSString *token = [[[[deviceToken description]
                        stringByReplacingOccurrencesOfString:@"<" withString:@""]
                       stringByReplacingOccurrencesOfString:@">" withString:@""]
                      stringByReplacingOccurrencesOfString:@" " withString:@""];
  [[NSUserDefaults standardUserDefaults] setObject:token forKey:@"expoPushToken"];
  [[NSUserDefaults standardUserDefaults] synchronize];
}

- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
  NSLog(@"Failed to register: %@", error);
}

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
fetchCompletionHandler:(void (^)(UIBackgroundFetchResult))completion