I've recently been working on an application with the IONIC 3 framework, I'm working with Google maps and I managed to generate a map in my application with my exact location, but I do not know how to make the user choose a Any location other than the one that generates me by default took several days and I can not find information to help me.
If you have already been able to generate the map, I imagine that you have all the appropriate configurations. Look at this example:
You can indicate to the user by means of some input the longitude and latitude and save it in an object:
var uluru = {lat: this.inputLat, lng: this.inputLng};
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 4,
center: uluru
});