无法访问 zzbfm 类文件 zzbfm 未找到、Firebase、android?

Question

我的应用中集成了Play服务和Firebase。 当我运行应用程序时，出现此错误

cannot access zzbfm
class file for com.google.android.gms.internal.zzbfm not found

这是我的顶级毕业生

buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.1.2'

// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
classpath 'com.google.gms:google-services:4.0.1'
}
}
allprojects {
repositories {
google()
jcenter()
}
tasks.withType(JavaCompile) { options.deprecation = true }
}
task clean(type: Delete) {
delete rootProject.buildDir
}

这是我的应用级别分级

apply plugin: 'com.android.application'
android {
compileSdkVersion 27
defaultConfig {
applicationId "ima.rvtech"
minSdkVersion 23
targetSdkVersion 27
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:27.0.2'
implementation 'com.android.support:design:27.0.2'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation 'com.android.support:support-v4:27.0.2'
implementation 'com.google.android.gms:play-services-location:15.0.1'
implementation 'com.google.firebase:firebase-core:16.0.0'
implementation 'com.google.firebase:firebase-auth:11.6.2'
implementation 'com.google.firebase:firebase-messaging:11.8.0'
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'
implementation 'com.google.dagger:dagger:2.16'
annotationProcessor 'com.google.dagger:dagger-compiler:2.16'
implementation 'com.jakewharton:butterknife:8.8.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
implementation 'com.github.bumptech.glide:glide:4.6.1'
annotationProcessor 'com.github.bumptech.glide:compiler:4.6.1'
implementation 'io.reactivex.rxjava2:rxjava:2.1.13'
implementation 'com.squareup.retrofit2:retrofit:2.3.0'
implementation 'com.squareup.retrofit2:converter-gson:2.3.0'
implementation 'com.balsikandar.android:crashreporter:1.0.9'
implementation "android.arch.persistence.room:runtime:1.0.0"
annotationProcessor "android.arch.persistence.room:compiler:1.0.0"
}
apply plugin: 'com.google.gms.google-services'

当我尝试获取远程消息时，我在我的消息服务类中指出错误

指向

public class FCMMessageService extends FirebaseMessagingService {
@Override
public void onMessageReceived(RemoteMessage message) {
sendMyNotification(message.getNotification().getBody());
}

private void sendMyNotification(String message) {
//On click of notification it redirect to this Activity
Intent intent = new Intent(this, ActivityHome.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this,"x")
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("My Firebase Push notification")
.setContentText(message)
.setAutoCancel(true)
.setSound(soundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, notificationBuilder.build());
}
}

已经检查了其他问题中提到的解决方案，但这些答案都没有奏效。

有什么解决办法吗？

Answer 1

您不能混合使用 Firebase 库的版本 <= 12 和版本>= 15。

implementation 'com.google.firebase:firebase-core:16.0.0'
implementation 'com.google.firebase:firebase-auth:11.6.2'
implementation 'com.google.firebase:firebase-messaging:11.8.0'

最简单的解决方法是将所有这些升级到版本 16 或更高版本：

implementation 'com.google.firebase:firebase-core:16.0.0'
implementation 'com.google.firebase:firebase-auth:16.0.1'
implementation 'com.google.firebase:firebase-messaging:17.0.0'

所有这些版本都来自设置适用于Android的Firebase文档，因此请务必查看其中的最新更新。

背景：在版本 12 及更低版本中，项目中所有 Firebase(和 Play 服务(库的版本必须完全相同。在更高版本的 15 中，您可以混合使用版本。但是没有办法在一个项目中混合使用 <= 12 和>= 15 个库。