React Native: Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'

Question

I\'ve tried gradlew clean and every other solution available here and on GitHub but the error doesn\'t match and solution doesn\'t work

Error on cmd A

Answer 1

Just run

cd android && gradlew clean

then

cd .. && react-native run-android

Answer 2

As an update to this answer (if people can't figure out why, especially one Mac)

use sudo! I was trying to figure out why gradlew commands were not running for ages, turns out - it didnt have permission!

Use:

sudo ./gradlew [command]

I'm so frustrated and happy at the same time.

Answer 3

I have the same issue. So to make it 'clearer', I did these:

1. Update to sdk27 (compile and target). minSdk is at 21
2. Update related goodle-play base/services/maps to 15.0.1 (Depends on your project requirement)
3. Then: I add multidexEnabled=true in the same section as no (1) above

4. (Optional) - I had another issue where Gradle couldn't find the play-services version properly: I modified the project build.gradle to search the google maven first before the jcenter()

   maven {
       url 'https://maven.google.com/'
       name 'Google'
   }
   mavenLocal()
   jcenter()
   

Answer 4

Open the /android/app/build.gradle file.

Under dependencies we need to add the module, and then enable it within defaultConfig

android {
    defaultConfig {
        // ...
        multiDexEnabled true
    }
    // ...
}

dependencies {
  implementation 'com.android.support:multidex:1.0.3'
}

Answer 5

me too had this same error, and i was able to debug it using the command ./gradlew assembleDebug --stacktrace(inside android folder) and for me it was because i had two libraries and both were having same package name, on changing package name of one resolved the issue