问题
Just Updated android studio from 2.3.3 to 3.0 now I am having the error
Error:Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'. java.lang.RuntimeException: java.lang.RuntimeException: com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex
Here is my gradle file:
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion '26.0.2'
defaultConfig {
applicationId "d91.compassacademy"
minSdkVersion 19
targetSdkVersion 25
versionCode 3
versionName "1.0"
testInstrumentationRunner
"android.support.test.runner.AndroidJUnitRunner"
vectorDrawables.useSupportLibrary = true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
debug {
debuggable true
}
}
}
repositories {
mavenCentral()
google()
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
compile 'com.android.support:multidex:1.0.2'
compile('com.google.api-client:google-api-client-android:1.22.0') {
exclude group: 'org.apache.httpcomponents'
}
compile 'pub.devrel:easypermissions:0.2.1'
compile project(path: ':mapviewpager')
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2',
{
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.4.0'
compile 'com.android.support:recyclerview-v7:25.4.0'
compile 'com.android.support:cardview-v7:25.4.0'
compile 'com.google.firebase:firebase-database:11.4.2'
compile 'com.google.android.gms:play-services-auth:11.4.2'
compile 'com.google.android.gms:play-services-places:11.4.2'
compile 'com.google.android.gms:play-services:11.4.2'
compile 'com.google.firebase:firebase-storage:11.4.2'
compile 'com.google.firebase:firebase-auth:11.4.2'
compile 'com.firebaseui:firebase-ui-database:1.1.1'
compile 'com.squareup.picasso:picasso:2.5.2'
compile 'com.theartofdev.edmodo:android-image-cropper:2.3.1'
compile 'com.roughike:bottom-bar:2.1.1'
compile 'com.android.support:support-v4:25.4.0'
compile 'com.squareup.retrofit:retrofit:1.9.0'
compile 'com.android.support:support-vector-drawable:25.4.0'
compile 'pub.devrel:easypermissions:0.2.1'
compile 'com.google.code.findbugs:jsr305:2.0.1'
compile 'com.jakewharton:butterknife:8.4.0'
compile 'com.getbase:floatingactionbutton:1.10.1'
compile 'com.android.support:multidex:1.0.2'
compile 'com.android.support.constraint:constraint-layout:1.1.0-beta3'
testCompile 'junit:junit:4.12'
}
apply plugin: 'com.google.gms.google-services'
回答1:
I looked up:
Error:Execution failed for task ':memDicez:transformDexArchiveWithExternalLibsDexMergerForDebug'.
com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex
yesterday and found nothing usefull,
my issue is now solved,
this method might get you towards a solution (it worked for me, no guarantee it works for you)
I had:
android {
compileSdkVersion 25
buildToolsVersion '26.0.2'
defaultConfig {
applicationId "(my secret applicationId)"
minSdkVersion 21
targetSdkVersion 25
multiDexEnabled true
}
...
}
and
dependencies {
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support:support-v4:25.3.1'
compile 'ch.acra:acra:4.9.2'
//compile 'com.google.android.gms:play-services-auth:9.0.0'
compile 'com.loopj.android:android-async-http:1.4.9'
compile 'com.koushikdutta.ion:ion:2.+'
compile group: 'com.googlecode.json-simple', name: 'json-simple', version: '1.1.1'
}
and when I changed:
minSdkVersion 21
to
minSdkVersion 16
I got a more descriptive error message which did give solutions via google/stack overflow.
in my case
compile group: 'com.googlecode.json-simple', name: 'json-simple', version: '1.1.1'
should be changed to
compile('com.googlecode.json-simple:json-simple:1.1.1') {
exclude group: 'org.hamcrest', module: 'hamcrest-core'
}
You can change the minSdkVersion back to a higher value later on but decreasing it seems to give a more descriptive (or more googleable) problem (and solution)
cheers,
S.
回答2:
In your file build.gradle (Project: XXX), there is this snippet
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.0'
}
}
Previously, that is 2.3.3, then became 3.0.0 when you updated your Android Studio. Try reverting it to 2.3.3 then Resync, then wait for your Android Studio to ask to update your Gradle and gradle plugin to 3.0.0. By this time, no build issues should appear related to Merge Dex.
回答3:
multiDexEnabled true
Example
android {
compileSdkVersion 25
buildToolsVersion '26.0.2'
defaultConfig {
applicationId "com.xx.xxx"
minSdkVersion 15
targetSdkVersion 24
versionCode 9
versionName "1.0"
multiDexEnabled true //Add this
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
shrinkResources true
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
} }
回答4:
Take a look in "Settings"->"Android SDK"->"SDK Tools" Google Play services is checked and installed v.46, while you there check if you need to update anything else for the new android version.
Clean and Rebuild the project. It should fix the problem, if not you can try to removed the .gradle folder and clean and rebuild again.
For me I also had to close all android projects and open android studio again and it worked smoothly.
Good luck,
回答5:
My issue was fixed by changing the minimal SDK to 16 and target SDK to 25, and adding multidexenabled=true in default.config. Add the follwing to in app/build.gradle:
compile 'com.android.support:appcompat-v7:25.+'
compile 'com.android.support:design:25.+'
回答6:
It started happening in my case after adding the following dependency.
implementation 'com.getbase:floatingactionbutton:1.9.0'
I've tried all suggestions published here and in other places, but nothing has worked.
I've tried then a common solution that helped in many other cases and it worked. I've simply used "Sync project with gradle files" from the following menu that can be found in Tools.
来源：https://stackoverflow.com/questions/46980900/android-studio-3-0-unable-to-merge-dex