Ionic 2 openlayers 3 map not loading second time onwards on android device

When I install Ionic 2 Open layers map on android device, i can see Open layers map successfully on the android screen. But when i close it and open the app again, i cant see the map.
To solve this problem , what i do is: i uninstall the app, restart my device, then reinstall the app, after that i can see the map.
Please provide me a permanent fix, without restarting/reinstalling everytime.

Hi all, please provide some insights into the problem that i am facing … application works only once, i.e. the map is rendered only once. If i close the app and open it again , it does not render.