com.android.dex.DexIndexOverflowException on Andro

问题:

I have a library I use for Espresso tests that when I added to my project I'm not able to compile my tests.

Gradle outputs this error

Caused by: com.android.dex.DexIndexOverflowException: method ID not in [0, 0xffff]: 65536
    at com.android.dx.merge.DexMerger$8.updateIndex(DexMerger.java:565)
    at com.android.dx.merge.DexMerger$IdMerger.mergeSorted(DexMerger.java:276)
    at com.android.dx.merge.DexMerger.mergeMethodIds(DexMerger.java:574)
    at com.android.dx.merge.DexMerger.mergeDexes(DexMerger.java:166)
    at com.android.dx.merge.DexMerger.merge(DexMerger.java:198)

Which is really weird because I already have multiDex enabled in my project

My Project build.gradle

defaultConfig {
            minSdkVersion 16
            targetSdkVersion 21
            versionName versionNameFromGitTagVia()
            versionCode versionCodeFromJenkins()
            multiDexEnabled true

            testInstrumentationRunner "app.test.general.InstrumentationRunner" ...
}
dependencies {
    ...
    androidTestImplementation project(':test-utils')
    ...
    implementation 'com.android.support:multidex:1.0.2'
}

My Application Class

public class RiderApplication extends MultiDexApplication implements Application.ActivityLifecycleCallbacks,
        GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
  ....
}

AndroidManifest

<application
    android:name=".RiderApplication"
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:largeHeap="true"
    android:theme="@style/MyAppTheme"
    tools:replace="android:theme,android:icon">

Removing the library solves the problem

Any suggestions?

EDIT I tried to fix it in several ways, and I discovered that this only happends when I include the library as

androidTestImplementation

But when used as a regular

implementation

The dex error disappears

Really strange

EDIT

It only happens with gradle 3.0.1, if I go back to gradle 2.3.3 the problem is no more

回答1:

Solved by updating gradle build tools from version 3.0.1 to 3.1.0-rc02. So please try:

classpath 'com.android.tools.build:gradle:3.1.0-rc02'

回答2:

Well, this is a strange one but it has happened before.

I've stumbled upon this thread, whish suggested this addition:

dexOptions {
    jumboMode = true

    // Avoid the OutOfMemoryError: GC overhead limit exceeded:
    incremental true
    javaMaxHeapSize "4g"
}

This should handle the issue of the string number being too large, as opposed to the number of methods being too large.

More on jumbo mode vs multidex here: Android: Jumbo Mode vs Multidex

Happy testing.

回答3:

Well, after many hours of testing I finally got it to run.

I have changed several things in the project, so I can't tell what was the one that caused the problem, but for the greater good I'll write here everything I did and I hope that if someone will ever encounter with such problem at least one solution will help her.

So I changed minSdkVersion to 21. Yes, it wasn't a requirement with Android Studio 2.3.3 but apparently it is now if you're going to use espresso. But worry not, your application can still support older versions when not testing. To configure it that way I've added this to my build.gradle

def isTest = gradle.startParameter.taskNames.find { it.contains("AndroidTest") }
        if (isTest != null) {
            println("is test true")
            minSdkVersion 21
        } else {
            println("is not test")
            minSdkVersion 16
        }

Other than that, I updated multiDex dependency from 1.0.1 to 1.0.2 and I enforced that on all dependencies.

I also updated guava library to com.google.guava:guava:22.0-android, which led to a dependency conflict that I solved by forcing another library (all forcing strategy is posted below).

I then had a dependency conflict with espresso-web that I needed to enforce too.

This is my resolution strategy at the moment

configurations.all {
        resolutionStrategy {
            force 'com.android.support:multidex:1.0.2'
            force 'com.google.guava:guava:22.0-android'
            force 'com.google.code.findbugs:jsr305:2.0.1'
            force 'com.android.support.test.espresso:espresso-web:3.0.1'
        }
    }

I hope this helps anyone, thank you so much for all the people who tried to help, you brought many ideas that helped me succeeded with the final resolution