leaflet入门之移动端初始化
目录
leaflet入门之移动端初始化
设备宽高自适应
样式
body {
padding: 0;
margin: 0;
}
html, body, #map {
height: 100%;
width: 100vw;
}
设备缩放设置为原始比例，head之中添加如下代码
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
初始化地图，同电脑端
var map = L.map('map').fitWorld();
L.tileLayer('https://api.tiles.mapbox.com/v4/MapID/997/256/{z}/{x}/{y}.png?access_token={accessToken}', {
attribution: 'Map data © <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, <a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
maxZoom: 18
}).addTo(map);
定位功能，移动设备具有定位模块
当调用定位方法时，会自动弹出是否开启定位权限，如果同意会自动获取到当前位置
map.locate({setView: true, maxZoom: 16});
定位完成后进行一些其他操作，弹出信息框popup。监听定位完成事件
function onLocationFound(e) {
var radius = e.accuracy / 2;
L.marker(e.latlng).addTo(map)//添加当前位置marker,并弹出误差范围
.bindPopup("You are within " + radius + " meters from this point").openPopup();
L.circle(e.latlng, radius).addTo(map);//添加误差范围
}
map.on('locationfound', onLocationFound);//添加监听事件
错误信息提示
function onLocationError(e) {
alert(e.message);
}
map.on('locationerror', onLocationError);
完整代码
<!DOCTYPE html>
<html>
<head>
<title>Mobile tutorial - Leaflet</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="shortcut icon" type="image/x-icon" href="docs/images/favicon.ico" />
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.3.4/dist/leaflet.css" integrity="sha512-puBpdR0798OZvTTbP4A8Ix/l+A4dHDD0DGqYW6RQ+9jxkRFclaxxQb/SJAWZfWAkuyeQUytO7+7N4QKrDh+drA==" crossorigin="" />
<script src="https://unpkg.com/leaflet@1.3.4/dist/leaflet.js" integrity="sha512-nMMmRyTVoLYqjP9hrbed9S+FzjZHW5gY1TWCHA5ckwXZBadntCNs8kEqAWdrb9O7rxbCaA4lKTIWjDXZxflOcA==" crossorigin=""></script>
<style>
html,
body {
height: 100%;
margin: 0;
}
#map {
width: 600px;
height: 400px;
}
</style>
<style>
body {
padding: 0;
margin: 0;
}
#map {
height: 100%;
width: 100vw;
}
</style>
</head>
<body>
<div id='map'></div>
<script>
var map = L.map('map').fitWorld();
L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoibWFwYm94IiwiYSI6ImNpejY4NXVycTA2emYycXBndHRqcmZ3N3gifQ.rJcFIG214AriISLbB6B5aw', {
maxZoom: 18,
attribution: 'Map data © <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, ' +
'<a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, ' +
'Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
id: 'mapbox.streets'
}).addTo(map);
function onLocationFound(e) {
var radius = e.accuracy / 2;
L.marker(e.latlng).addTo(map)
.bindPopup("You are within " + radius + " meters from this point").openPopup();
L.circle(e.latlng, radius).addTo(map);
}
function onLocationError(e) {
alert(e.message);
}
map.on('locationfound', onLocationFound);
map.on('locationerror', onLocationError);
map.locate({ setView: true, maxZoom: 16 });
</script>
</body>
</html>
