The user will fill some fields and load photos, then send all to server (Back and). The backend allow create users that can login in android app and allow to create reports in pdf of data sent from android.
This backend allow to show points using googlemaps api.
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i am good to make the script/form as per your need as i am core developer so having good knowledge about this...also worked on googlemap api as well...if you have some time then we can discuss about this..