Firebase无法检测到我的Flutter应用，并且无法发送推送通知

Question

Firebase未检测到我的Android应用程序（在设置部分，最后一步是“运行您的应用程序以验证安装”）。我也无法将通知发送到该应用。我已经导入了所有重要的程序包（核心程序和消息传递程序），并根据此Medium文章进行了所有操作。我还检查了许多stackoverflow问题，例如this。但仍然无法在我的设备（genymotion仿真器）中接收推送通知。出现错误消息：

E/FirebaseInstanceId( 7264): Topic sync or token retrieval failed on hard failure 
exceptions: INVALID_SENDER. Won't retry the operation.
W/FirebaseMessagingPlugin( 7264): getToken, error fetching instanceID:                                             
W/FirebaseMessagingPlugin( 7264): java.io.IOException: INVALID_SENDER                                              
W/FirebaseMessagingPlugin( 7264):       at 
com.google.firebase.iid.zzl.zza(com.google.firebase:firebase-iid@@20.0.2:71)
W/FirebaseMessagingPlugin( 7264):       at 
com.google.firebase.iid.zzl.zza(com.google.firebase:firebase-iid@@20.0.2:84)
W/FirebaseMessagingPlugin( 7264):       at 
com.google.firebase.iid.zzp.then(com.google.firebase:firebase-iid@@20.0.2:4)
W/FirebaseMessagingPlugin( 7264):       at com.google.android.gms.tasks.zzd.run(Unknown 
Source)                    
W/FirebaseMessagingPlugin( 7264):       at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
W/FirebaseMessagingPlugin( 7264):       at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
W/FirebaseMessagingPlugin( 7264):       at java.lang.Thread.run(Thread.java:818)                                   
W/FirebaseMessagingPlugin( 7264): getToken, error fetching instanceID:                                             
W/FirebaseMessagingPlugin( 7264): java.io.IOException: INVALID_SENDER                                              
W/FirebaseMessagingPlugin( 7264):       at 
com.google.firebase.iid.zzl.zza(com.google.firebase:firebase-iid@@20.0.2:71)
W/FirebaseMessagingPlugin( 7264):       at 
com.google.firebase.iid.zzl.zza(com.google.firebase:firebase-iid@@20.0.2:84)
W/FirebaseMessagingPlugin( 7264):       at 
com.google.firebase.iid.zzp.then(com.google.firebase:firebase-iid@@20.0.2:4)
W/FirebaseMessagingPlugin( 7264):       at com.google.android.gms.tasks.zzd.run(Unknown 
Source)                    
W/FirebaseMessagingPlugin( 7264):       at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
W/FirebaseMessagingPlugin( 7264):       at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
W/FirebaseMessagingPlugin( 7264):       at java.lang.Thread.run(Thread.java:818) 

请帮助我解决此问题。

Answer 1

您需要将google-services.json添加到项目中。