Execution failed for task ':app:mergeDexDebug'. Firestore | Flutter

Question

Trying to use Firestore in my project. My project is a brand new one, but having problems running the app on my device without getting an error: Execution failed for task ':app:mergeDexDebug'.

My app is using AndroidX. I've added my google-services.json file, followed the steps etc.

Yaml file:

dependencies:
  cloud_firestore: ^0.13.3

android/build.gradle:

com.google.gms:google-services:4.3.3

Full error:

FAILURE: Build failed with an exception.

What went wrong: Execution failed for task ':app:mergeDexDebug'. A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: The number of method references in a .dex file cannot exceed 64K. Learn how to resolve this issue at https://developer.android.com/tools/building/multidex.html

score 245 · Accepted Answer · edited Dec 27 '22 at 01:10

245

The problem is with multidex builder. Actually, this often happens when you have imported a lot of packages in your yaml file which cannot fit into a single .dex built hence you have to enable multidex.

Go to android/app/build.gradle and add the following lines of code:

dependencies {
  implementation 'com.android.support:multidex:2.0.1' //enter the latest multidex version
}
android {
    defaultConfig {
        multiDexEnabled true
    }
}

edited Dec 27 '22 at 01:10

starball

20,030
7
43
238

answered Feb 20 '20 at 00:07

lordvidex

3,581
3
17
25

this might help.. https://stackoverflow.com/questions/49886597/multidex-issue-with-flutter – lordvidex Feb 20 '20 at 00:16
1

Infact, adding multiDexEnabled true fixed the issue. Don't understand why though, as I think firestore is using AndroidX. Thank you – Jonathon Feb 20 '20 at 00:37
8

You can find the latest multiDex version here: https://developer.android.com/jetpack/androidx/versions#multidex – Sludge Sep 21 '20 at 21:10
5

omg thank you!! All I added was `multiDexEnabled true` but not the dependency and that fixed my issue. – Devnsyde Nov 12 '20 at 20:57
4

After so many attempts this worked for me thank you @lordvidex – Yash Pokar Nov 15 '20 at 11:54
Worked on my react-native project, thank you! – Tahero Aug 29 '21 at 17:22
I've tried that but I'm getting error Program type already present: com.reactlibrary.BuildConfig, anyone with the same problem? – kavain Jan 28 '22 at 23:02
this fix on flutter projcect as well – B.Cos Apr 25 '22 at 11:32
not working anymore – Muhammad Talha Dec 24 '22 at 06:13

score 25 · Answer 2 · answered Feb 20 '20 at 00:36

Fixed the issue, but don't understand why. Why do I need to enable multiDex when I believe Firestore is using AndroidX?

Anyway, the fix. Add multiDexEnabled true to your app/build.gradle

defaultConfig {
    // TODO: Specify your own unique Application ID 
    (https://developer.android.com/studio/build/application-id.html).
    applicationId "com.example.poll"
    minSdkVersion 16
    targetSdkVersion 28
    versionCode flutterVersionCode.toInteger()
    versionName flutterVersionName
    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    //This line here...
    multiDexEnabled true
}

score 22 · Answer 3 · answered Dec 18 '20 at 16:21

I just met with this error, and it turns out it can be fixed easily. Of course, other answers on this are really great and it tells you how to fix it. However, I was wondering why this even happened. It turns out this comes from the minSdkVersion used. If this is set to 20 or lower, you need to configure your app for multiDex support.

   defaultConfig {
        applicationId "com.inspire.aaym"
        minSdkVersion 21
        targetSdkVersion 30
    }

So, if you app is not intended to be used in Android version prior to 5.0, setting the minSdkVersion number to 21 will easily fix this issue. If not, follow the workaround to enable mutiDex support.

Read more from the official document: https://developer.android.com/studio/build/multidex#mdex-gradle

score 9 · Answer 4 · answered Aug 26 '20 at 15:16

You can follow the guidelines mentioned here

https://developer.android.com/studio/build/multidex

or to cut the story short and directly go to answer

Find android/app/build.gradle file and add the following lines of codes:

dependencies {
  compile 'com.android.support:multidex:1.0.3' 
  //find latest version from here https://developer.android.com/studio/build/multidex
}

android {
    defaultConfig {
        multiDexEnabled true
    }
}

score 2 · Answer 5 · answered Jul 11 '20 at 03:23

When your app and the libraries it references exceed 65,536 methods, you encounter a build error that indicates your app has reached the limit of the Android build architecture: https://developer.android.com/studio/build/multidex

add multiDexEnabled true in app/build.gradle defaultConfig at last.

defaultConfig{ ... multiDexEnabled true }

score 2 · Answer 6 · answered Jan 10 '22 at 21:18

In 2022 : Execution failed for task ':app:mergeExtDexDebug'. Solved it by Changing:

android {
    compileSdkVersion 29

    compileOptions {
        sourceCompatibility kotlin_version
        targetCompatibility kotlin_version
    }

To

android {
    compileSdkVersion 29

    compileOptions {
        sourceCompatibility 1.8
        targetCompatibility 1.8
    }

And Also Added:

multiDexEnabled true

to

defaultConfig {

}

score 1 · Answer 7 · answered Oct 14 '20 at 17:56

If you are using AndroidX,

Add below lines to app/build.gradle

multiDexEnabled true // to the defaultConfig {}

implementation 'androidx.multidex:multidex:2.0.1' // to the dependencies

To the AndroidManifest.xml (Optional)

<application
    android:name="androidx.multidex.MultiDexApplication"

Please note that you have to extends MainActivity to the MultiDexApplication. If you change android:name.

score 0 · Answer 8 · answered Aug 10 '21 at 09:15

0

in app/build.gradle make sure your minSdkVersion should be greater or equal to 21

defaultConfig {

    minSdkVersion 21

    targetSdkVersion 30

    versionCode flutterVersionCode.toInteger()

    versionName flutterVersionName

}

answered Aug 10 '21 at 09:15

Kapil Rabade

1
1

score 0 · Answer 9 · answered Jun 07 '23 at 17:49

0

at android/build.gradle test different versions of minSdkVersion. Mine worked with minSdkVersion = 22.

answered Jun 07 '23 at 17:49

Gabriel Cecon Carlsen

311
3
4

score -1 · Answer 10 · answered Jul 28 '22 at 05:08

-1

this error when test Device is Change!Clear Build folder from project and rerun again.good lock

answered Jul 28 '22 at 05:08

mrqomi

11

As it’s currently written, your answer is unclear. Please [edit] to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – skr Aug 02 '22 at 16:45

Execution failed for task ':app:mergeDexDebug'. Firestore | Flutter

10 Answers10

In 2022 : Execution failed for task ':app:mergeExtDexDebug'. Solved it by Changing:

To

Linked