Unable to merge dex Ionic 3

Question

Last time I build successfully but after adding the number of pages I am unable to build, I did search for that error a lot but nothing works for me.For example, added and removed the platform, ionic cordova clean , ionic cordova build etc…

Following Error facing by running-- ionic cordova build android

What went wrong: Execution failed for task ‘:app:transformDexArchiveWithExternalLibsDexMergerForD ebug’. java.lang.RuntimeException: java.lang.RuntimeException: com.android.builder.de xing.DexArchiveMergerException: Unable to merge dex

Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

Get more help at https://help.gradle.org

BUILD FAILED in 7s

IOnic Info:

cli packages: (C:\Users\ITSERV\AppData\Roaming\npm\node_modules)

@ionic/cli-utils : 1.19.2 ionic (Ionic CLI) : 3.20.0 global packages:

cordova (Cordova CLI) : 8.0.0 local packages:

@ionic/app-scripts : 3.1.8 Cordova Platforms : android 7.0.0 Ionic Framework : ionic-angular 3.9.2 System:

Node : v6.11.2 npm : 3.10.10 OS : Windows 7

Thanks in advance!

Answer 1

What helped me was running:

cordova clean

Answer 2

I solved this issue by running simply this command and then build the project. don't go into complicated answers like upgrading Gradle or google packages etc..

 cordova clean android 
 ionic cordova build android 

Answer 3

I did struggle with this issue for 2 days after i used google maps plugin inside my app and i suppose it is because of google-play-service conflicts and i resolved it by install the latest grade release by using this command. Hope it helps anyone else facing this issue

ionic cordova plugin add cordova-android-play-services-gradle-release

Answer 4

I solve with

Cordova Clean Android
Cordova Build Android

Answer 5

I have the same issue

(Unable to merge dex Ionic)

when I created the Ionic app. When I run the app the

BUILD FAILED in 11s 37 actionable tasks: 3 executed

error occurred. First I use the following solution but it doesn't work for me but it work for the other I guess.

configurations.all {
    resolutionStrategy {
       force 'com.android.support:support-v4:26.1.0'
    } 
}

Finally this is what helped me to overcome the issue of failing to build the app.

cordova clean android
ionic cordova build android
ionic cordova run android (To re-launch the app)

Answer 6

I also faced this issued. I solved it via two steps:

Step 1 : cordova clean

Step 2: cordova build

Answer 7

Above commands didn't fix my problem.

I change the following line in project.properties in platforms folder

com.google.android.gms:play-services-analytics:11.0.1

to

com.google.android.gms:play-services-analytics:+

and it's fixed

Answer 8

Copying this answer from this Github issue comment from Trent Gardner, since anything else didn't work for me:

Fix for the Facebook plugin was to force the Facebook SDK to version 4.25.0.

cordova plugin add cordova-plugin-platform-replace

Then add to your config.xml

<platform name="android">
  <replace-string file="project.properties" find="regex:com\.facebook\.android\:facebook-android-sdk\:[\+0-9\.]+" replace="com.facebook.android:facebook-android-sdk:4.25.0" />
</platform>

Finally run cordova prepare android

Works with the latest 1.9.1 version of cordova-facebook-plugin4

Answer 9

I encountered a similar problem. Installing the plugin helped me

cordova plugin add phonegap-plugin-multidex