Overlay点击选中
功能场景
支持开发者选中目标路线、多边形区域，常用于路线切换、检索等场景。
Android
iOS
//mapopen-website-wiki.bj.bcebos.com/demos/AndroidVideos/Overlay点击选中@android.mp4
1590746640|//mapopen-website-wiki.bj.bcebos.com/demos/newqrcodes/Overlay点击选中@2xanidroid.png
扫码体验
使用产品
Android地图SDK|/index.php?title=androidsdk
>
绘制弧线和面|/index.php?title=androidsdk/guide/render-map/ploygon
下载源码
//mapopen-website-wiki.bj.bcebos.com/demos/BaiduMapSDKExample.zip
核心接口
类
接口
描述
DistrictSearch
searchDistrict (DistrictSearchOption option)
检索行政区
DistrictSearch
setOnDistrictSearchListener（OnGetDistrictSearchResultListener districtResultListener）
设置检索结果回调
DistrictSearchOption
cityName(String city)
设置检索城市
DistrictSearchOption
districtName(String district)
搜索行政区
SpatialRelationUtil
searchDistrictisPolygonContainsPoint(List<Latlng> list, Latlng latlng)
返回一个点是否在多边形内
重点关注
检索完成后，需要调用PoiSearch的destroy()方法，否则会有内存泄露。
核心代码
1.发起检索请求
JAVA
// 发起请求
mDistrictSearch.searchDistrict(new DistrictSearchOption().cityName(city).districtName(district));
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2.检索结果回调处理
JAVA
@Override
public void onGetDistrictResult(DistrictResult districtResult) {
mBaiduMap.clear();
if (districtResult == null) {
return;
}
if (districtResult.error == SearchResult.ERRORNO.NO_ERROR) {
List<List<LatLng>> polyLines = districtResult.getPolylines();
if (polyLines == null) {
return;
}
mLatLngList = polyLines;
//画出行政区多边形
LatLngBounds.Builder builder = new LatLngBounds.Builder();
for (List<LatLng> polyline: polyLines) {
OverlayOptions ooPolyline = new PolylineOptions().width(10).points(polyline).dottedLine(true).color(0xAA00FF00);
mBaiduMap.addOverlay(ooPolyline);
OverlayOptions ooPolygon = new PolygonOptions().points(polyline).stroke(new Stroke(5, 0xAA00FF88))
.fillColor(0xAAFFFF00);
Polygon polygon = (Polygon) mBaiduMap.addOverlay(ooPolygon);
polygonList.add(polygon);
for (LatLng latLng: polyline) {
builder.include(latLng);
}
}
mBaiduMap.setMapStatus(MapStatusUpdateFactory.newLatLngBounds(builder.build()));
MapStatus.Builder mapBuilder = new MapStatus.Builder();
mBaiduMap.setMapStatus(MapStatusUpdateFactory.newMapStatus(mapBuilder.zoom(11).build()));
}
}
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3.判断是否在行政区内
JAVA
for (List<LatLng> list: mLatLngList) {
// 判断点是否在多边形内
boolean isPolygonContains = SpatialRelationUtil.isPolygonContainsPoint(list, point);
if (isPolygonContains) {
//更换颜色
OverlayOptions ooPolygon = new PolygonOptions().points(list).stroke(new Stroke(5, 0xAA00FF88))
.fillColor(0xAAFF7700);
Polygon polygon = (Polygon) mBaiduMap.addOverlay(ooPolygon);
polygonList.add(polygon);
} else {
OverlayOptions ooPolygon = new PolygonOptions().points(list).stroke(new Stroke(5, 0xAA00FF88))
.fillColor(0xAAFFFF00);
Polygon polygon = (Polygon) mBaiduMap.addOverlay(ooPolygon);
polygonList.add(polygon);
}
}
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更多功能
绘制线|/index.php?title=androidsdk/guide/render-map/ployline