Notification popup not appearing in when in background or quit state.

Bug

Hi, I’m having an issue while receiving notification when the app is in the background or killed in fact I can see the notification is received, can see the icon in the status bar, vibration working like normal but no popup appears.

Please find below my environment and config info, Thanks !

Environment info

react-native info output:

System:
    OS: macOS 10.15.5
    CPU: (4) x64 Intel(R) Core(TM) i5-7360U CPU @ 2.30GHz
    Memory: 81.48 MB / 16.00 GB
    Shell: 3.2.57 - /bin/bash
  Binaries:
    Node: 13.10.1 - /usr/local/bin/node
    Yarn: 1.22.4 - /usr/local/bin/yarn
    npm: 6.13.7 - /usr/local/bin/npm
    Watchman: 4.9.0 - /usr/local/bin/watchman
  Managers:
    CocoaPods: 1.9.1 - /usr/local/bin/pod
  SDKs:
    iOS SDK:
      Platforms: iOS 13.5, DriverKit 19.0, macOS 10.15, tvOS 13.4, watchOS 6.2
    Android SDK: Not Found
  IDEs:
    Android Studio: 3.6 AI-192.7142.36.36.6392135
    Xcode: 11.5/11E608c - /usr/bin/xcodebuild
  Languages:
    Java: 11.0.2 - /usr/bin/javac
    Python: 2.7.15 - /usr/local/bin/python
  npmPackages:
    @react-native-community/cli: ^2.9.0 => 2.10.0 
    react: 16.11.0 => 16.11.0 
    react-native: 0.62.2 => 0.62.2 
  npmGlobalPackages:
    *react-native*: Not Found

Library version: 3.5.2

Steps To Reproduce

1. Put the app in the background or kill it
2. Send the notification

Describe what you expected to happen:

1. A popup appears showing the notification when the app is killed or in the background

Reproducible sample code

build.gradle

  buildscript {
      ext {
         googlePlayServicesVersion = "20.0.0"
         firebaseIidVersion = "20.2.0"
         firebaseMessagingVersion = "20.2.0"
         buildToolsVersion = "28.0.3"
         minSdkVersion = 21
         compileSdkVersion = 28
         targetSdkVersion = 28
         supportLibVersion = "28.0.0"
         ext.kotlinVersion = '1.3.10'
     }
     repositories {
         google()
         jcenter()
         mavenCentral()
         maven {
             url 'https://maven.fabric.io/public'
         }
     }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.6.3'
        classpath 'com.google.gms:google-services:4.3.3'
        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.1.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
    }
}

app/build.gradle

    implementation 'com.google.firebase:firebase-analytics:17.4.3'
    implementation 'com.google.firebase:firebase-crashlytics:17.0.0'
    implementation 'com.google.firebase:firebase-messaging:20.2.0'
    implementation 'com.google.firebase:firebase-messaging-directboot:20.2.0'

Payload:

 { "notification": { "text": "test",  "title": "title" }, "data": { "dataSample": "sample"}, "priority": "high" }"

[Dallas62]

Hi,

I now recommend you to create channels yourself according to the documentation, and pass the channel when triggering the notification. In the next version, this will not be allowed anymore.

[Dallas62]

Your channel id is wrong, Check #1395 or the README of the dev branch.

Did you mean to write this fixed value? rn-push-notification-channel-id-4-300

Or where can I get my channel id? YOUR-CHANEL-ID-4-300

Yes this is a fixed value such as rn-push-notification-channel-id-4-300