Change the center position of the Circle.
<div id="map_canvas"></div>
var GOOGLE = {"lat" : 37.422858, "lng" : -122.085065};
var mapDiv = document.getElementById("map_canvas");
var map = plugin.google.maps.Map.getMap(mapDiv);
map.addEventListener(plugin.google.maps.event.MAP_READY, function() {
// Add circle
map.addCircle({
'center': GOOGLE,
'radius': 300,
'strokeColor' : '#AA00FF',
'strokeWidth': 5,
'fillColor' : '#880000'
}, function(circle) {
map.moveCamera({
target: circle.getBounds(),
padding: 50
});
map.addMarker({
position: circle.getCenter(),
draggable: true,
title: "Drag me!"
}, function(marker) {
marker.showInfoWindow();
// If the marker moves, the center property is also changed.
marker.bindTo("position", circle, "center");
});
});
});