//components\resources\resources.wxml
<map id="mapId" class="map" markers="{{markers}}" polygons="{{polygons}}" scale="{{scale}}" bindmarkertap="getPoint" wx:if="{{ mapShow }}" show-location="true" ></map>
//components\resources\resources.js
// 从高德地图API获取边界数据
getDistrictBoundaryFromAmap(districtName, level) {
const that = this;
// 使用高德地图行政区划查询API
const key = '1234567910'; // 需要替换为实际的高德地图API密钥
wx.request({
method: "GET",
data: {
key: key,
keywords: districtName,
subdistrict: "0",
extensions: "all",
output: "JSON",
level: level
},
url: "https://restapi.amap.com/v3/config/district?parameters",
header: {
'content-type': 'application/json',
},
success: (res) => {
if (res.statusCode == 200 && res.data.info == "OK" && res.data.districts && res.data.districts.length > 0) {
const district = res.data.districts[0];
const polyline = district.polyline;
if (polyline) {
const boundsList = polyline.split(";\n");
const polygons = [];
boundsList.forEach((boundary, index) => {
const bounds = [];
boundary.split(";").forEach(item => {
const lonlats = item.split(",");
if (lonlats.length === 2) {
bounds.push({
longitude: Number(lonlats[0]),
latitude: Number(lonlats[1])
});
}
});
if (bounds.length > 0) {
polygons.push({
points: bounds,
strokeWidth: 3,
strokeColor: '#5583FF',
fillColor: 'rgba(85, 131, 255, 0.3)',
fillOpacity: 0.3,
zIndex: 1
});
}
});
that.setData({
polygons: polygons
});
console.log('从高德地图API获取边界数据成功');
// 调整地图视野以显示整个区域
setTimeout(() => {
that.includePolygonArea();
}, 300);
} else {
console.log('高德地图API未返回边界数据');
that.useBackupBoundary();
}
} else {
console.log('高德地图API查询失败:', res.data.info || '未知错误');
that.useBackupBoundary();
}
},
fail(err) {
console.log('高德地图API请求失败:', err);
// 如果API请求失败，使用备用坐标
that.useBackupBoundary();
}
});
},
// 使用备用边界坐标（当API请求失败时使用）
useBackupBoundary() {
console.log('使用备用边界坐标数据');
// 黄山徽州区的备用边界坐标点
const huizhouPoints = 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const boundsList = huizhouPoints.split(";\n");
const polygons = [];
boundsList.forEach((boundary, index) => {
const bounds = [];
boundary.split(";").forEach(item => {
const lonlats = item.split(",");
if (lonlats.length === 2) {
bounds.push({
longitude: Number(lonlats[0]),
latitude: Number(lonlats[1])
});
}
});
if (bounds.length > 0) {
polygons.push({
points: bounds,
strokeWidth: 3,
strokeColor: '#5583FF',
fillColor: 'rgba(85, 131, 255, 0.3)',
fillOpacity: 0.3,
zIndex: 1
});
}
});
that.setData({
polygons: polygons
});
// 调整地图视野以显示整个区域
setTimeout(() => {
that.includePolygonArea();
}, 300);
},
