将字节码转换为dex：原因：com.android.dex.DexException：定义了多个dex文件

Question

Error:Error converting bytecode to dex: Cause: com.android.dex.DexException: Multiple dex files define Landroid/arch/lifecycle/LiveData$LifecycleBoundObserver;

my gradle file

android {
compileSdkVersion 27
defaultConfig {
applicationId "com.ayoubdesigner101.Sinbad.sealling"
minSdkVersion 19
targetSdkVersion 27
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
multiDexEnabled true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}

dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')

implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation 'com.google.firebase:firebase-auth:11.0.4'
implementation 'com.google.firebase:firebase-database:11.0.4'
implementation 'com.google.firebase:firebase-crash:11.0.4'
implementation 'com.google.firebase:firebase-storage:11.0.4'
// FirebaseUI for Firebase Realtime Database
implementation 'com.firebaseui:firebase-ui-database:2.3.0'

compile 'com.google.android.gms:play-services:11.0.4'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
implementation 'com.android.support:cardview-v7:27.1.1'
compile 'com.aurelhubert:ahbottomnavigation:2.1.0'
implementation 'com.android.support:design:27.1.1'
implementation 'com.android.support:support-v4:27.1.1'
compile 'de.hdodenhof:circleimageview:2.2.0'
implementation 'com.github.bumptech.glide:glide:4.6.1'
compile 'com.firebase:geofire-android:2.1.1'
}

apply plugin: 'com.google.gms.google-services'`

**this is the error I get it **

Error:Error converting bytecode to dex:
Cause: com.android.dex.DexException: Multiple dex files define Landroid/arch/lifecycle/LiveData$LifecycleBoundObserver;
Error:com.android.dex.DexException: Multiple dex files define Landroid/arch/lifecycle/LiveData$LifecycleBoundObserver;
Error:  at com.android.dx.merge.DexMerger.readSortableTypes(DexMerger.java:661)
Error:  at com.android.dx.merge.DexMerger.getSortedTypes(DexMerger.java:616)
Error:  at com.android.dx.merge.DexMerger.mergeClassDefs(DexMerger.java:598)
Error:  at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:171)
Error:  at com.android.dx.merge.DexMerger.merge(DexMerger.java:198)
Error:  at com.android.builder.dexing.DexArchiveMergerCallable.call(DexArchiveMergerCallable.java:61)
Error:  at com.android.builder.dexing.DexArchiveMergerCallable.call(DexArchiveMergerCallable.java:36)
Error:  at java.util.concurrent.ForkJoinTask$AdaptedCallable.exec(ForkJoinTask.java:1424)
Error:  at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
Error:  at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
Error:  at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
Error:  at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Error:Execution failed for task ':app:transformDexArchiveWithDexMergerForDebug'.
com.android.build.api.transform.TransformException: com.android.dex.DexException: Multiple dex files define Landroid/arch/lifecycle/LiveData$LifecycleBoundObserver;
Information:BUILD FAILED in 14s
Information:15 errors
Information:0 warnings
Information:See complete output in console

Answer 1

You need to upgrade your Firebase Ui dependencies as well as GeoFire

And once you do, ensure compatibles between it and the other Google and Firebase versions

And rather than :play-services:11.0.4 , please compile the specific dependencies of Google Play you actually are going to use . That dependency is all of them, and it slows down your build adding libraries you're not using.

This error also typically appears if you've added any JAR files into your libs folder. For the mentioned class, that JAR would have to be a android support library such as Android Architecture