I am building my sencha + phonegap app using the sencha command utility. I have updated the config.xml in the root of the sencha app with the following information to have my app icon.
<icon src="icon.png"/>
<icon gap:density="ldpi" gap:platform="android" src="resources/icons/android/icon-36.png" />
<icon gap:density="mdpi" gap:platform="android" src="resources/icons/android/icon-48.png" />
<icon gap:density="hdpi" gap:platform="android" src="resources/icons/android/icon-72.png" />
<icon gap:density="xhdpi" gap:platform="android" src="resources/icons/android/icon-96.png" />
When i run the sencha command to build the app,
sencha app build native
The built package still has the phonegap icon when installed onto the device. The phonegap folder is copied with all the images i specified in the config.xml.
This is using the phonegap local build.