每次我从 Firebase Cloud Messaging 发送通知时，我的应用程序都会崩溃

Question

我想从 FCM 向我的设备发送通知，但每次我发送通知时我的应用程序总是停止工作。可能是什么问题？

这是我的一些代码

// app-level build.gradle
dependencies {
    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'
    implementation 'com.google.firebase:firebase-core:16.0.9'
    implementation 'com.android.support:multidex:1.0.3'
    implementation 'com.android.support:design:27.1.0'
    implementation 'com.google.firebase:firebase-messaging:17.3.3'
}

// 项目级build.gradle

dependencies {
    classpath 'com.android.tools.build:gradle:3.3.1'
    classpath 'com.google.gms:google-services:4.2.0'
}

AndroidManifest.xml

<intent-filter>
    <action android:name="FLUTTER_NOTIFICATION_CLICK"/>
    <category android:name="android.intent.category.DEFAULT"/>
</intent-filter>

pubspec.yaml

dependencies:
  flutter:
    sdk: flutter
  cloud_firestore:
  firebase_core: 
  firebase_messaging: 
  cupertino_icons: ^0.1.2

dev_dependencies:

错误日志：

E/AndroidRuntime(17164): java.lang.RuntimeException: Unable to instantiate service io.flutter.plugins.firebasemessaging.FlutterFirebaseMessagingService: java.lang.ClassNotFoundException: Didn't find class "io.flutter.plugins.firebasemessaging.FlutterFirebaseMessagingService" on path: DexPathList[[zip file "/data/app/com.maztur.hunafa-z3QygagDkOlt4fQ6fzLBgw==/base.apk"],nativeLibraryDirectories=[/data/app/com.maztur.hunafa-z3QygagDkOlt4fQ6fzLBgw==/lib/arm64, /data/app/com.maztur.hunafa-z3QygagDkOlt4fQ6fzLBgw==/base.apk!/lib/arm64-v8a, /system/lib64, /system/vendor/lib64]]
E/AndroidRuntime(17164):    at android.app.ActivityThread.handleCreateService(ActivityThread.java:3737)
E/AndroidRuntime(17164):    at android.app.ActivityThread.access$1400(ActivityThread.java:237)
E/AndroidRuntime(17164):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1801)
E/AndroidRuntime(17164):    at android.os.Handler.dispatchMessage(Handler.java:106)
E/AndroidRuntime(17164):    at android.os.Looper.loop(Looper.java:214)
E/AndroidRuntime(17164):    at android.app.ActivityThread.main(ActivityThread.java:7045)
E/AndroidRuntime(17164):    at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(17164):    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
E/AndroidRuntime(17164):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:964)
E/AndroidRuntime(17164): Caused by: java.lang.ClassNotFoundException: Didn't find class "io.flutter.plugins.firebasemessaging.FlutterFirebaseMessagingService" on path: DexPathList[[zip file "/data/app/com.maztur.hunafa-z3QygagDkOlt4fQ6fzLBgw==/base.apk"],nativeLibraryDirectories=[/data/app/com.maztur.hunafa-z3QygagDkOlt4fQ6fzLBgw==/lib/arm64, /data/app/com.maztur.hunafa-z3QygagDkOlt4fQ6fzLBgw==/base.apk!/lib/arm64-v8a, /system/lib64, /system/vendor/lib64]]
E/AndroidRuntime(17164):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
E/AndroidRuntime(17164):    at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
E/AndroidRuntime(17164):    at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
E/AndroidRuntime(17164):    at android.app.AppComponentFactory.instantiateService(AppComponentFactory.java:103)
E/AndroidRuntime(17164):    at android.app.ActivityThread.handleCreateService(ActivityThread.java:3732)
E/AndroidRuntime(17164):    ... 8 more
E/AndroidRuntime(17164):    Suppressed: java.lang.NoClassDefFoundError: Failed resolution of: Lcom/google/firebase/messaging/FirebaseMessagingService;
E/AndroidRuntime(17164):        at java.lang.VMClassLoader.findLoadedClass(Native Method)
E/AndroidRuntime(17164):        at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:738)
E/AndroidRuntime(17164):        at java.lang.ClassLoader.loadClass(ClassLoader.java:363)
E/AndroidRuntime(17164):        ... 11 more
E/AndroidRuntime(17164):    Caused by: java.lang.ClassNotFoundException: com.google.firebase.messaging.FirebaseMessagingService
E/AndroidRuntime(17164):        at java.lang.VMClassLoader.findLoadedClass(Native Method)
E/AndroidRuntime(17164):        at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:738)
E/AndroidRuntime(17164):        at java.lang.ClassLoader.loadClass(ClassLoader.java:363)
E/AndroidRuntime(17164):        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
E/AndroidRuntime(17164):        ... 14 more
E/AndroidRuntime(17164):    Caused by: java.lang.IllegalAccessError: Class com.google.firebase.iid.zzb extended by class com.google.firebase.messaging.FirebaseMessagingService is inaccessible (declaration of 'com.google.firebase.messaging.FirebaseMessagingService' appears in /data/app/com.maztur.hunafa-z3QygagDkOlt4fQ6fzLBgw==/base.apk!classes2.dex)
E/AndroidRuntime(17164):        ... 14 more
I/Process (17164): Sending signal. PID: 17164 SIG: 9
Lost connection to device.

Answer 1

这很可能是因为您同时添加了 Flutter Firebase 依赖项以及本机依赖项。您不打算添加原生依赖项，因为它们将由 Flutter 依赖项添加。

从 build.gradle 中删除 firebase-core、firebase-messaging 和设计支持依赖项后重试。