百度地图多个Marker点自适应屏幕

多个Marker点同时展示在可视范围内，并自动缩放。

Marker点和路径规划轨迹同时在可视范围内，并自动缩放。

在xml中就一个mapview，如下：

xml version="1.0" encoding="utf-8"?>
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.pistol.auto.MainActivity">

            android:id="@+id/bmapView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clickable="true"/>

前置需要集成百度地图部分功能。

Activity如下：

public class MainActivity extends AppCompatActivity implements OnGetRoutePlanResultListener {

    private MapView  mMapView;
    private BaiduMap mBaiduMap;

    private RoutePlanSearch mSearch;
    private DrivingRouteLine    route   = null;
    private DrivingRouteOverlay overlay = null;

    private BitmapDescriptor mIconMaker;
    private List latList = new ArrayList<>();

    // 天安门坐标
    private double mLat1 = 39.915291;
    private double mLon1 = 116.403857;
    // 百度大厦坐标
    private double mLat2 = 40.056858;
    private double mLon2 = 116.308194;
    // 西湖坐标
    private double mLat3 = 30.2446230000;
    private double mLon3 = 120.1517040000;

    private LatLng loc_start;
    private LatLng loc_end;
    private LatLng loc_position;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //在使用SDK各组件之前初始化context信息，传入ApplicationContext
        //注意该方法要再setContentView方法之前实现
        SDKInitializer.initialize(getApplicationContext());
        setContentView(R.layout.activity_main);
        initView();
        initData();
    }

    private void initView() {
        mMapView = (MapView) findViewById(R.id.bmapView);
        mBaiduMap = mMapView.getMap();

        mIconMaker = BitmapDescriptorFactory.fromResource(R.mipmap.ic_launcher_round);
        //创建驾车线路规划检索实例
        mSearch = RoutePlanSearch.newInstance();
        mSearch.setOnGetRoutePlanResultListener(this);
    }

    private void initData() {
        loc_start = new LatLng(mLat1, mLon1);
        loc_end = new LatLng(mLat2, mLon2);
        loc_position = new LatLng(mLat3, mLon3);

        latList.add(loc_start);
        latList.add(loc_end);
        latList.add(loc_position);

        //多个Maker展示在同一可视范围内
        //        showMarkers();
        //规划路线和Maker展示在同一可视范围内
        search();
    }

    private void showMarkers() {
        for (LatLng position : latList) {
            addMarker(position);
        }
        updateMap();
    }

    private void search() {

        PlanNode stNode = PlanNode.withLocation(latList.get(0));
        PlanNode enNode = PlanNode.withLocation(latList.get(1));

        mSearch.drivingSearch((new DrivingRoutePlanOption()).from(stNode).to(enNode));
    }

    @Override
    public void onGetDrivingRouteResult(DrivingRouteResult result) {
        //获取驾车线路规划结果
        if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {
            Toast.makeText(this, "抱歉，未找到结果", Toast.LENGTH_SHORT).show();
        }
        if (result.error == SearchResult.ERRORNO.AMBIGUOUS_ROURE_ADDR) {
            //起终点或途经点地址有岐义，通过以下接口获取建议查询信息
            //result.getSuggestAddrInfo()
            return;
        }
        //获取地理编码结果
        if (result.error == SearchResult.ERRORNO.NO_ERROR) {
            route = result.getRouteLines().get(0);
            overlay = new DrivingRouteOverlay(mBaiduMap);
            overlay.setData(route);
            overlay.addToMap();
            //                        overlay.zoomToSpan();
        }
        //添加Marker点
        addMarker(latList.get(2));
        //把路径规划的所有取到的点添加到自己创建的list中

	for (int j = 0; j < result.getRouteLines().get(0).getAllStep().size(); j++) {
    	    for (LatLng l : result.getRouteLines().get(0).getAllStep().get(j).getWayPoints()) {
   	        latLngList.add(l);
    	    }
	}

updateMap() ; } private void addMarker(LatLng position) { OverlayOptions overlayOptions = new MarkerOptions().position(position).icon( mIconMaker) ; mBaiduMap.addOverlay(overlayOptions) ; } private void updateMap() { //路径规划和Marker点同时展示时注释掉，仅多个Marker点时打开 // mBaiduMap.setOnMapLoadedCallback(new BaiduMap.OnMapLoadedCallback() { // @Override // public void onMapLoaded() { //仿照zoomToSpan()写的自适应 LatLngBounds.Builder builder = new LatLngBounds.Builder() ; for ( int i = 0 ; i < latList.size() ; i++) { builder.include( latList.get(i)) ; } //更新地图 mBaiduMap.animateMapStatus(MapStatusUpdateFactory . newLatLngBounds(builder.build())) ; // } // }); } @Override public void onGetWalkingRouteResult(WalkingRouteResult walkingRouteResult) { } @Override public void onGetTransitRouteResult(TransitRouteResult transitRouteResult) { } @Override public void onGetMassTransitRouteResult(MassTransitRouteResult massTransitRouteResult) { } @Override public void onGetIndoorRouteResult(IndoorRouteResult indoorRouteResult) { } @Override public void onGetBikingRouteResult(BikingRouteResult bikingRouteResult) { }}

下载地址：http://download.csdn.net/detail/qq_19666821/9814223