当尝试在我的Android应用中实现Firebase Firestore（com.google.firebase：firebase-firestore）时，我收到与Google Dialogflow（com.google.cloud:google-cloud-dialogflow:0.77.0- α）。在排除任何依赖项之前，我得到的第一个错误是：
Error: Program type already present: com.google.api.AuthProviderOrBuilder
由于Firestore使用以下依赖项，因此我将这种情况的范围缩小了：
com.google.protobuf:protobuf-lite:3.0.1
io.grpc:grpc-protobuf-lite:1.16.1
而Dialogflow使用：
com.google.protobuf:protobuf-java-util:3.6.1
com.google.protobuf:protobuf-java:3.6.1
io.grpc:grpc-protobuf:1.16.1
排除这两个版本会导致protobuf-java的编译器错误（缺少相关性而缺少类），或者在以下功能处导致应用崩溃，并显示以下错误：
db.collection("users")
.get()
.addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
@Override
public void onComplete(@NonNull Task<QuerySnapshot> task) {
if (task.isSuccessful()) {
// For every document within the specified collection
for (QueryDocumentSnapshot document : task.getResult()) {
Log.d(TAG, document.getId() + " => " + document.getData());
}
} else {
Log.w(TAG, "Error getting documents.", task.getException());
}
}
});
错误：
java.lang.RuntimeException: Internal error in Firestore (0.6.6-dev).
at com.google.firebase.firestore.util.AsyncQueue.lambda$panic$5(com.google.firebase:firebase-firestore@@17.1.5:377)
at com.google.firebase.firestore.util.AsyncQueue$$Lambda$5.run(Unknown Source:2)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6680)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: java.lang.VerifyError: Verifier rejected class com.google.firestore.v1beta1.WriteResponse: void com.google.firestore.v1beta1.WriteResponse.mergeCommitTime(com.google.protobuf.Timestamp) failed to verify: void com.google.firestore.v1beta1.WriteResponse.mergeCommitTime(com.google.protobuf.Timestamp): [0x12] register v3 has type Precise Reference: com.google.protobuf.Timestamp but expected Reference: com.google.protobuf.GeneratedMessageLiteVerifier rejected class com.google.firestore.v1beta1.WriteResponse: java.lang.Object com.google.firestore.v1beta1.WriteResponse.dynamicMethod(com.google.protobuf.GeneratedMessageLite$MethodToInvoke, java.lang.Object, java.lang.Object) failed to verify: java.lang.Object com.google.firestore.v1beta1.WriteResponse.dynamicMethod(com.google.protobuf.GeneratedMessageLite$MethodToInvoke, java.lang.Object, java.lang.Object): [0x74] register v5 has type Precise Reference: com.google.protobuf.Timestamp but expected Reference: com.google.protobuf.GeneratedMessageLite (declaration of 'com.google.firestore.v1beta1.WriteResponse'
at com.google.firestore.v1beta1.WriteResponse.getDefaultInstance(com.google.firebase:firebase-firestore@@17.1.5:1012)
at com.google.firestore.v1beta1.FirestoreGrpc.getWriteMethod(com.google.firebase:firebase-firestore@@17.1.5:379)
at com.google.firebase.firestore.remote.WriteStream.<init>(com.google.firebase:firebase-firestore@@17.1.5:75)
at com.google.firebase.firestore.remote.Datastore.createWriteStream(com.google.firebase:firebase-firestore@@17.1.5:154)
at com.google.firebase.firestore.remote.RemoteStore.<init>(com.google.firebase:firebase-firestore@@17.1.5:182)
at com.google.firebase.firestore.core.FirestoreClient.initialize(com.google.firebase:firebase-firestore@@17.1.5:217)
at com.google.firebase.firestore.core.FirestoreClient.lambda$new$2(com.google.firebase:firebase-firestore@@17.1.5:108)
at com.google.firebase.firestore.core.FirestoreClient$$Lambda$2.run(Unknown Source:8)
at com.google.firebase.firestore.util.AsyncQueue.lambda$enqueue$4(com.google.firebase:firebase-firestore@@17.1.5:309)
at com.google.firebase.firestore.util.AsyncQueue$$Lambda$4.call(Unknown Source:2)
at com.google.firebase.firestore.util.AsyncQueue.lambda$enqueue$3(com.google.firebase:firebase-firestore@@17.1.5:285)
at com.google.firebase.firestore.util.AsyncQueue$$Lambda$3.run(Unknown Source:4)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:458)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at com.google.firebase.firestore.util.AsyncQueue$DelayedStartFactory.run(com.google.firebase:firebase-firestore@@17.1.5:203)
at java.lang.Thread.run(Thread.java:764)
这是我的应用gradle文件：
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.placeholder.name"
minSdkVersion 23
targetSdkVersion 28
multiDexEnabled true
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
packagingOptions {
exclude 'META-INF/DEPENDENCIES'
exclude 'META-INF/INDEX.LIST'
exclude 'META-INF/proguard/androidx-annotations.pro'
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation 'androidx.appcompat:appcompat:1.1.0-alpha01'
implementation 'androidx.browser:browser:1.0.0'
implementation 'androidx.cardview:cardview:1.0.0'
implementation 'androidx.constraintlayout:constraintlayout:2.0.0-alpha3'
implementation 'com.google.android.material:material:1.1.0-alpha02'
implementation 'androidx.legacy:legacy-support-v4:1.0.0'
implementation 'com.google.android.gms:play-services-auth:16.0.1'
implementation 'com.google.android.gms:play-services-base:16.0.1'
implementation 'com.google.android.gms:play-services-flags:16.0.1'
implementation 'com.google.android.gms:play-services-stats:16.0.1'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
implementation 'androidx.room:room-runtime:2.1.0-alpha03'
annotationProcessor 'androidx.room:room-compiler:2.1.0-alpha03'
implementation 'io.grpc:grpc-okhttp:1.16.1'
implementation 'com.github.PhilJay:MPAndroidChart:v3.0.3'
implementation 'com.google.firebase:firebase-firestore:17.1.5'
implementation 'com.google.cloud:google-cloud-dialogflow:0.77.0-alpha'
implementation 'com.firebaseui:firebase-ui-auth:4.3.1'
}
apply plugin: 'com.google.gms.google-services'
这是我的build.gradle：
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.1'
classpath 'com.google.gms:google-services:4.2.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
maven { url 'https://jitpack.io' }
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
最后，这是我依赖项的输出（由于长度原因，必须粘贴bin）：https://pastebin.com/dSGm1wCV