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HarmonyOS
<!DOCTYPE html>
<html>
<head>
<title>Showing pixel and tile coordinates</title>
<meta name="viewport" content="initial-scale=1.0">
<meta charset="utf-8">
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
</style></head>
<body>
<div id="map"></div>
<script>
function initMap() {
var chicago = new google.maps.LatLng(120.61752, 31.248331);
var map = new google.maps.Map(document.getElementById('map'), {
center: chicago,
zoom: 7
});
var coordInfoWindow = new google.maps.InfoWindow();
coordInfoWindow.setContent(createInfoWindowContent(chicago, map.getZoom()));
coordInfoWindow.setPosition(chicago);
coordInfoWindow.open(map);
map.addListener('zoom_changed', function() {
coordInfoWindow.setContent(createInfoWindowContent(chicago, map.getZoom()));
coordInfoWindow.open(map);
});
}
var TILE_SIZE = 256;
function createInfoWindowContent(latLng, zoom) {
var scale = 1 << zoom;
var worldCoordinate = project(latLng);
var pixelCoordinate = new google.maps.Point(
Math.floor(worldCoordinate.x * scale),
Math.floor(worldCoordinate.y * scale));
var tileCoordinate = new google.maps.Point(
Math.floor(worldCoordinate.x * scale / TILE_SIZE),
Math.floor(worldCoordinate.y * scale / TILE_SIZE));
return [
'JiangYin KangHua',
'Tel: ' + "400-888-8888",
'E-mail: ' + 'website@qq.com',
'Address: ' + 'jiangyinxxxxxxxxxx',
].join('<br>');
}
// The mapping between latitude, longitude and pixels is defined by the web
// mercator projection.
function project(latLng) {
var siny = Math.sin(latLng.lat() * Math.PI / 180);
// Truncating to 0.9999 effectively limits latitude to 89.189. This is
// about a third of a tile past the edge of the world tile.
siny = Math.min(Math.max(siny, -0.9999), 0.9999);
return new google.maps.Point(
TILE_SIZE * (0.5 + latLng.lng() / 360),
TILE_SIZE * (0.5 - Math.log((1 + siny) / (1 - siny)) / (4 * Math.PI)));
}
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=xxxxxxxxx&callback=initMap">
</script></body>
</html>
Google Maps API warning: InvalidKey
你这代码应该是复制别人的，需要申请google map api key