收到通知后应用程序崩溃 [英] Application crash upon receiving a notification
问题描述
我正在尝试设置推送通知系统，为此，我正在将Firebase Cloud Messaging与Pusher一起使用.为了实现它，我遵循了本教程. /p>
设置FCM时，我能够从FCM的仪表板发送通知. 然后，当我设置Pusher时，收到通知后，我的应用程序崩溃.
我已经检查了互联网上的多个帖子，但是找不到能解决我的问题的帖子.我已经多次检查了我的gradle文件中的依存关系.
这是我的MainActivity.java:
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import com.pusher.pushnotifications.PushNotifications;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
PushNotifications.start(getApplicationContext(), "9e3bfbb7-a6b0-4bcf-aa74-47b4b04fa530");
PushNotifications.addDeviceInterest("hello");
}
}
build.gradle(Module:app)-依赖关系
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
//noinspection GradleCompatible
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.google.firebase:firebase-messaging:17.6.0'
implementation 'com.google.firebase:firebase-core:16.0.8'
implementation 'com.google.firebase:firebase-auth:16.2.1'
implementation 'com.pusher:push-notifications-android:1.4.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
为了发送通知，我使用了Pusher网站提供的curl命令:
curl -H "Content-Type: application/json" -H "Authorization: Bearer 99E1F894C23ECD14DE98003053B3AFC1D3A4335C97C0D1DF5E1105C719979CA3" -X POST "https://9e3bfbb7-a6b0-4bcf-aa74-47b4b04fa530.pushnotifications.pusher.com/publish_api/v1/instances/9e3bfbb7-a6b0-4bcf-aa74-47b4b04fa530/publishes" -d '{"interests":["hello"],"fcm":{"notification":{"title":"Hello","body":"Hello, world!"}}}'
我的应用程序检测到该通知，但是在收到通知时崩溃，出现错误:
I/FCMMessageReceiver: Got a valid pusher message.
E/AndroidRuntime: FATAL EXCEPTION: Firebase-WrappedFirebaseMessagingService
Process: com.example.fcmapp, PID: 10924
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference
at android.content.ContextWrapper.getPackageName(ContextWrapper.java:142)
at com.google.firebase.messaging.zzb.<init>(Unknown Source:5)
at com.google.firebase.messaging.FirebaseMessagingService.zzd(Unknown Source:58)
at com.google.firebase.iid.zzb.run(Unknown Source:2)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at com.google.android.gms.common.util.concurrent.zza.run(Unknown Source:6)
at java.lang.Thread.run(Thread.java:764)
我发现了同样的问题.我改回了com.google.firebase:firebase-messaging:17.5.0.问题解决了.
I'm trying to setup a push notification system, to do that, I'm using Firebase Cloud Messaging with Pusher. I followed this tutorial, in order to implement it.
When setting up FCM, I was able to send notifications from FCM's dashboard. Then when I setup Pusher, upon receiving a notification, my application crashes.
I've checked multiple post on the internet, but I couldn't find any that solved my issue. I've checked multiple times my dependencies in my gradle files.
Here is my MainActivity.java:
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import com.pusher.pushnotifications.PushNotifications;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
PushNotifications.start(getApplicationContext(), "9e3bfbb7-a6b0-4bcf-aa74-47b4b04fa530");
PushNotifications.addDeviceInterest("hello");
}
}
build.gradle (Module:app) - Dependencies
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
//noinspection GradleCompatible
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.google.firebase:firebase-messaging:17.6.0'
implementation 'com.google.firebase:firebase-core:16.0.8'
implementation 'com.google.firebase:firebase-auth:16.2.1'
implementation 'com.pusher:push-notifications-android:1.4.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}
In order to send a notification, i'm using the curl command, provided by the Pusher website :
curl -H "Content-Type: application/json" -H "Authorization: Bearer 99E1F894C23ECD14DE98003053B3AFC1D3A4335C97C0D1DF5E1105C719979CA3" -X POST "https://9e3bfbb7-a6b0-4bcf-aa74-47b4b04fa530.pushnotifications.pusher.com/publish_api/v1/instances/9e3bfbb7-a6b0-4bcf-aa74-47b4b04fa530/publishes" -d '{"interests":["hello"],"fcm":{"notification":{"title":"Hello","body":"Hello, world!"}}}'
My application detects the notification, but crash when receiving it, there's the error:
I/FCMMessageReceiver: Got a valid pusher message.
E/AndroidRuntime: FATAL EXCEPTION: Firebase-WrappedFirebaseMessagingService
Process: com.example.fcmapp, PID: 10924
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference
at android.content.ContextWrapper.getPackageName(ContextWrapper.java:142)
at com.google.firebase.messaging.zzb.<init>(Unknown Source:5)
at com.google.firebase.messaging.FirebaseMessagingService.zzd(Unknown Source:58)
at com.google.firebase.iid.zzb.run(Unknown Source:2)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at com.google.android.gms.common.util.concurrent.zza.run(Unknown Source:6)
at java.lang.Thread.run(Thread.java:764)
I discovered the same exact issue. I changed back to com.google.firebase:firebase-messaging:17.5.0. Problem solved.
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