I have this random issue with ionic build or ionic run.
ionic build
ionic run
I\'ve noticed that during compilation it uses the cache of my source code, therefor
Remove platform :
ionic cordova platform rm android
Re add platform :
ionic cordova platform add android
Step 1) copy www folder specific platform
ionic cordova prepare android
Step 2) build apk
ionic cordova build android
Step 3) deploy latest apk in device
ionic cordova run android