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

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 2

What helped me was running:

cordova clean

Answer 3

I solve with

Cordova Clean Android
Cordova Build Android

Answer 4

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