This is a new issue that happen with cordova-android 6. After generating the resources using ionic resources command and building the android platform a new folder named res is created at the project root, and newly generated files (icons and splashes) are not being copied to android native platform.
Here is my environmnet information:
Cordova CLI: 6.4.0
Ionic CLI Version: 2.1.8
Ionic App Lib Version: 2.1.4
ios-deploy version: 1.9.0
ios-sim version: 3.1.1
OS: OS X El Capitan
Node Version: v4.2.4
Xcode version: Xcode 7.3.1 Build version 7D1014
Taking in consideration that I don’t want to use older cordova-android versions, which don’t expose the issue.