Google Map Not showing in ios and android in Ionic v2

[Thavarajan]

This following post will help you

Geolocation

If you’re working on a mobile application using Cordova 4.0 + and you’re using Google Maps do not forget to install Cordova Whitelist plugin. As of Cordova 4.0 all external resources permissions can be done only through this plugin, which includesGoogle Maps. I wrote an article on this topic, you will also find a working example there: Using Cordova Geoloacation API with Google Maps in Ionic Framework