//必须在此接口调用之后完成
mBaiduMap.setOnMapLoadedCallback(new BaiduMap.OnMapLoadedCallback() {
@Override
public void onMapLoaded() {
builder = new MapStatus.Builder();
// builder.target(target).zoom(8f);
mBaiduMap.animateMapStatus(MapStatusUpdateFactory.newMapStatus(builder.build()));
MarkerOptions oStart = new MarkerOptions();//地图标记覆盖物参数配置类
oStart.position(latLngs.get(0));//覆盖物位置点，第一个点为起点
oStart.icon(startBD);//设置覆盖物图片
oStart.zIndex(1);//设置覆盖物Index
mBaiduMap.addOverlay(oStart); //在地图上添加此图层
//添加终点图层
MarkerOptions oFinish = new MarkerOptions().position(latLngs.get(latLngs.size() - 1)).icon(finishBD).zIndex(2);
mBaiduMap.addOverlay(oFinish);
OverlayOptions ooPolyline = new PolylineOptions().width(13).color(getResources().getColor(R.color.colorPrimary)).points(latLngs);
mPolyline = (Polyline) mBaiduMap.addOverlay(ooPolyline);
//下面代码是将点展示在地图中的关键代码
LatLngBounds.Builder builder = new LatLngBounds.Builder();
for (LatLng p : latLngs) {
builder = builder.include(p);
}
LatLngBounds latLngBounds = builder.build();
MapStatusUpdate u = MapStatusUpdateFactory.newLatLngBounds(latLngBounds, mMapView.getWidth(), mMapView.getHeight());
mBaiduMap.animateMapStatus(u);
mPolyline.setZIndex(3);
}
});