react native ios willPresentNotification 函数不处理前台的推送通知

Question

我想用 react native firebase messages 处理 react native FCM。 对于 IOS，我将所需的代码添加到我的 AppDelegate.m 我添加了 willPresentNotification 函数来处理应用程序在前台时的推送：

//Called when a notification is delivered to a foreground app.
-(void)userNotificationCenter:(UNUserNotificationCenter *)center willPresentNotification:(UNNotification *)notification withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler
{
  completionHandler(UNAuthorizationOptionSound | UNAuthorizationOptionAlert | UNAuthorizationOptionBadge);
}

目前我没有在前台收到推送，我想在本地处理这个问题。 请问有什么建议吗？

Answer 1

默认情况下，应用在foreground时不会显示远程推送通知

你必须添加UNUserNotificationCenterDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // ...
    UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
    center.delegate = self;
    // ...
}

- (void)application:(UIApplication *)application didRegisterUserNotificationSettings:(UIUserNotificationSettings *)notificationSettings {
   [RNCPushNotificationIOS didRegisterUserNotificationSettings:notificationSettings];
}


- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
 [RNCPushNotificationIOS didReceiveLocalNotification:notification];
}

在AppDelegate.h 中添加UNUserNotificationCenterDelegate

#import <React/RCTBridgeDelegate.h>
#import <UIKit/UIKit.h>
#import <UserNotifications/UserNotifications.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate, RCTBridgeDelegate, UNUserNotificationCenterDelegate>

@property (nonatomic, strong) UIWindow *window;

@end

另一种方法是使用相同的远程通知并将其呈现为 localNotification like this