百度地图（二）

2019-04-24 本文已影响0人沈溺_16e5

定位

xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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=".MainActivity">
    
    <com.baidu.mapapi.map.MapView
        android:id="@+id/bmapView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clickable="true" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <Button
            android:id="@+id/location"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="定位"/>

    </LinearLayout>

</FrameLayout>

Activity

1、开启地图的定位图层

在Activity的onCreate()方法中

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private MapView mMapView;
    private Button location;
    private BaiduMap mBaiduMap;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initPermission();
        initView();
        mBaiduMap = mMapView.getMap();
    }

private void initView() {
        mMapView = (MapView) findViewById(R.id.bmapView);
        location = (Button) findViewById(R.id.location);
        location.setOnClickListener(this);
    }

2、构造地图数据

在Activity中创建MyLocationListener 类（内部类）继承自BDAbstractLocationListener 类

public class MyLocationListener extends BDAbstractLocationListener {
        @Override
        public void onReceiveLocation(BDLocation location) {
            //mapView 销毁后不在处理新接收的位置
            if (location == null || mMapView == null) {
                return;
            }
            MyLocationData locData = new MyLocationData.Builder()
                    .accuracy(location.getRadius())
                    // 此处设置开发者获取到的方向信息，顺时针0-360
                    .direction(location.getDirection()).latitude(location.getLatitude())
                    .longitude(location.getLongitude()).build();
            // mUser_latlng 用户在地图上的位置，抽成成员变量即可
            // location.getLatitude() 获取纬度信息  location.getLongitude() 获取经度信息
            mUser_latlng = new LatLng(location.getLatitude(), location.getLongitude());
            mBaiduMap.setMyLocationData(locData);
        }
}

3、通过LocationClient发起定位

在Activity的onCreate()方法中创建location()方法

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initPermission();
        initView();
        mBaiduMap = mMapView.getMap();
        location();
    }

location()方法代码如下

        mBaiduMap.setMyLocationEnabled(true);

        //定位初始化
        mLocationClient = new LocationClient(this);

        //通过LocationClientOption设置LocationClient相关参数
        LocationClientOption option = new LocationClientOption();
        option.setOpenGps(true); // 打开gps
        option.setCoorType("bd09ll"); // 设置坐标类型
        option.setScanSpan(1000);

        //设置locationClientOption
        mLocationClient.setLocOption(option);

        //注册LocationListener监听器
        MyLocationListener myLocationListener = new MyLocationListener();
        mLocationClient.registerLocationListener(myLocationListener);
        //开启地图定位图层
        mLocationClient.start();

这时只是得到了用户的位置，并没有使地图移到客户的位置，然后点击定位按钮，使地图显示用户当前的位置

在定位按钮的监听方法里调用locationUser()方法，代码如下：

private void locationUser() {
        MapStatusUpdate status2 = MapStatusUpdateFactory.newLatLng(mUser_latlng);
        mBaiduMap.setMapStatus(status2);
}

生命周期的onDestroy()中

@Override
protected void onDestroy() {
    mLocationClient.stop();
    mBaiduMap.setMyLocationEnabled(false);
    mMapView.onDestroy();
    mMapView = null;
    super.onDestroy();
}

完成以上工作，即可在您的地图应用中显示当前位置的蓝点，如下图：

MapLocation.png

导航

1、点击地图的任意位置并添加一个Marker图标，添加Marker图标的代码如下：

private void addMarker(LatLng latLng) {
        mBaiduMap.clear();
        //构建Marker图标
        BitmapDescriptor bitmap = BitmapDescriptorFactory
                .fromResource(R.drawable.icon_marka);
        Bundle bundle = new Bundle();
        bundle.putString("id", "id_01");
        //构建MarkerOption，用于在地图上添加Marker
        OverlayOptions option = new MarkerOptions()
                .position(latLng)
                .animateType(MarkerOptions.MarkerAnimateType.jump)
                .draggable(true)
                .title("你好,百度")
                .extraInfo(bundle)
                .icon(bitmap);
        //在地图上添加Marker，并显示
        mBaiduMap.addOverlay(option);
    }

2、点击Marker图标跳到导航页面

先给地图和Marker图标设置监听事件并在Activity的onCreate()方法中调用initListener() 方法

private void initListener() {
        mBaiduMap.setOnMarkerClickListener(new BaiduMap.OnMarkerClickListener() {
            //marker被点击时回调的方法
            //若响应点击事件，返回true，否则返回false
            //默认返回false
            @Override
            public boolean onMarkerClick(Marker marker) {
                Bundle extraInfo = marker.getExtraInfo();
                String id = extraInfo.getString("id");
                if ("id_01".equals(id)) {
                    showToast(marker.getTitle());
                }
                walkNavi(marker.getPosition());
                return false;
            }
        });

        mBaiduMap.setOnMapClickListener(new BaiduMap.OnMapClickListener() {
            @Override
            public void onMapClick(LatLng latLng) {
                addMarker(latLng);
            }

            @Override
            public boolean onMapPoiClick(MapPoi mapPoi) {
                return false;
            }
        });
    }

private void walkNavi(final LatLng end) {
        // 获取导航控制类
        // 引擎初始化
        WalkNavigateHelper.getInstance().initNaviEngine(this, new IWEngineInitListener() {

            @Override
            public void engineInitSuccess() {
                //引擎初始化成功的回调
                routeWalkPlanWithParam(end);
            }

            @Override
            public void engineInitFail() {
                //引擎初始化失败的回调
            }
        });
    }

    private void routeWalkPlanWithParam(LatLng end) {
        //发起算路
        //构造WalkNaviLaunchParam
        //起终点位置

        //构造WalkNaviLaunchParam
        WalkNaviLaunchParam mParam = new WalkNaviLaunchParam().stPt(mUser_latlng).endPt(end);

        //发起算路
        WalkNavigateHelper.getInstance().routePlanWithParams(mParam, new IWRoutePlanListener() {
            @Override
            public void onRoutePlanStart() {
                //开始算路的回调
            }

            @Override
            public void onRoutePlanSuccess() {
                //算路成功
                //跳转至诱导页面
                Intent intent = new Intent(MainActivity.this,
                        WNaviGuideActivity.class);
                startActivity(intent);
            }

            @Override
            public void onRoutePlanFail(WalkRoutePlanError walkRoutePlanError) {
                //算路失败的回调
            }
        });
    }

    public void showToast(String msg) {
        Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
    }

在MainActivity的onDestroy()方法中

@Override
    protected void onDestroy() {
        if (mLocationClient != null) {
            mLocationClient.stop();
        }
        mBaiduMap.setMyLocationEnabled(false);
        mMapView.onDestroy();
        mMapView = null;
        super.onDestroy();
    }

导航Activity

注意，导航Activity一定要继承Activity，不能继承AppCompatActivity

//步行导航的时候不能够继承AppCompatActivity
public class WNaviGuideActivity extends Activity {

    private WalkNavigateHelper mNaviHelper;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //获取WalkNavigateHelper实例
        mNaviHelper = WalkNavigateHelper.getInstance();
        //获取诱导页面地图展示View
        View view = mNaviHelper.onCreate(WNaviGuideActivity.this);
        if (view != null) {
            setContentView(view);
        }
        mNaviHelper.startWalkNavi(WNaviGuideActivity.this);

        mNaviHelper.setWalkNaviStatusListener(new IWNaviStatusListener() {
            /**
             * 普通步行导航模式和步行AR导航模式的切换
             * @param mode 导航模式
             * @param walkNaviModeSwitchListener 步行导航模式切换的监听器
             */
            @Override
            public void onWalkNaviModeChange(int mode, WalkNaviModeSwitchListener walkNaviModeSwitchListener) {
                mNaviHelper.switchWalkNaviMode(WNaviGuideActivity.this, mode, walkNaviModeSwitchListener);
            }

            @Override
            public void onNaviExit() {

            }
        });

        mNaviHelper.setRouteGuidanceListener(this, new IWRouteGuidanceListener() {
            //诱导图标更新
            @Override
            public void onRouteGuideIconUpdate(Drawable drawable) {

            }

            //诱导类型枚举
            @Override
            public void onRouteGuideKind(RouteGuideKind routeGuideKind) {

            }

            /**
             * 诱导信息
             *
             * @param charSequence  第一行显示的信息，如“沿当前道路”
             * @param charSequence1 第二行显示的信息，比如“向东出发”，第二行信息也可能为空
             */
            @Override
            public void onRoadGuideTextUpdate(CharSequence charSequence, CharSequence charSequence1) {

            }

            //总的剩余距离
            @Override
            public void onRemainDistanceUpdate(CharSequence charSequence) {

            }

            //总的剩余时间
            @Override
            public void onRemainTimeUpdate(CharSequence charSequence) {

            }

            //GPS状态发生变化，来自诱导引擎的消息
            @Override
            public void onGpsStatusChange(CharSequence charSequence, Drawable drawable) {

            }

            //已经开始偏航
            @Override
            public void onRouteFarAway(CharSequence charSequence, Drawable drawable) {

            }

            //偏航规划中
            @Override
            public void onRoutePlanYawing(CharSequence charSequence, Drawable drawable) {

            }

            //重新算路成功
            @Override
            public void onReRouteComplete() {

            }

            //抵达目的地
            @Override
            public void onArriveDest() {

            }

            //震动
            @Override
            public void onVibrate() {

            }
        });
    }
    @Override
    protected void onResume() {
        super.onResume();
        mNaviHelper.resume();
    }

    @Override
    protected void onPause() {
        super.onPause();
        mNaviHelper.pause();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mNaviHelper.quit();
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == ArCameraView.WALK_AR_PERMISSION) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                mNaviHelper.startCameraAndSetMapView(WNaviGuideActivity.this);
            } else if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_DENIED) {
                Toast.makeText(this, "需要开启相机使用权限", Toast.LENGTH_SHORT).show();
            }
        }
    }

}

导航.gif

获取周边POI

1、创建POI检索实例、设置检索监听器