百度地图sdkv3.6.1——覆盖物

使用百度地图sdkv3.6.1显示覆盖物：标注，文字覆盖物，几何图形覆盖物，弹出窗覆盖物，地形图图层等。

demo实现的效果如图所示：

具体代码如下所示：

package cn.vn.bdmapdemo;import java.util.ArrayList;import java.util.List;import com.baidu.mapapi.SDKInitializer;import com.baidu.mapapi.map.BaiduMap;import com.baidu.mapapi.map.BitmapDescriptor;import com.baidu.mapapi.map.BitmapDescriptorFactory;import com.baidu.mapapi.map.GroundOverlayOptions;import com.baidu.mapapi.map.InfoWindow;import com.baidu.mapapi.map.MapView;import com.baidu.mapapi.map.Marker;import com.baidu.mapapi.map.MarkerOptions;import com.baidu.mapapi.map.InfoWindow.OnInfoWindowClickListener;import com.baidu.mapapi.map.Overlay;import com.baidu.mapapi.map.OverlayOptions;import com.baidu.mapapi.map.BaiduMap.OnMarkerClickListener;import com.baidu.mapapi.map.BaiduMap.OnMarkerDragListener;import com.baidu.mapapi.map.PolygonOptions;import com.baidu.mapapi.map.Polyline;import com.baidu.mapapi.map.PolylineOptions;import com.baidu.mapapi.map.Stroke;import com.baidu.mapapi.map.TextOptions;import com.baidu.mapapi.model.LatLng;import com.baidu.mapapi.model.LatLngBounds;import android.app.Activity;import android.graphics.Color;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.Toast;public class MarkMap extends Activity {MapView mMapView = null;private BaiduMap mBaiduMap;private Marker mMarkerD;private Marker mMarkerA;private Marker mMarkerB;private Marker mMarkerC;private Overlay mTextOver;private Polyline mPolyline;private Overlay polygon;LatLng llA = new LatLng(40.018012,116.314869);LatLng llB = new LatLng(39.901209, 116.327518);LatLng llC = new LatLng(39.910508, 116.491368);LatLng llD = new LatLng(39.872863, 116.383859);// 初始化全局 bitmap 信息，不用时及时 recycleBitmapDescriptor bdA = BitmapDescriptorFactory.fromResource(R.drawable.icon_marka);BitmapDescriptor bdB = BitmapDescriptorFactory.fromResource(R.drawable.icon_markb);BitmapDescriptor bdC = BitmapDescriptorFactory.fromResource(R.drawable.icon_markc);BitmapDescriptor bdD = BitmapDescriptorFactory.fromResource(R.drawable.icon_markd);BitmapDescriptor bd = BitmapDescriptorFactory.fromResource(R.drawable.icon_gcoding);BitmapDescriptor bdGround = BitmapDescriptorFactory.fromResource(R.drawable.ground_overlay);private Overlay mGrond;    @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.base_map);          //获取地图控件引用          mMapView = (MapView) findViewById(R.id.bmapView);        mBaiduMap = mMapView.getMap();          mBaiduMap.setOnMarkerDragListener(new OnMarkerDragListener() {public void onMarkerDrag(Marker marker) {}public void onMarkerDragEnd(Marker marker) {Toast.makeText(MarkMap.this,"拖拽结束，新位置：" + marker.getPosition().latitude + ", "+ marker.getPosition().longitude,Toast.LENGTH_LONG).show();}public void onMarkerDragStart(Marker marker) {}});                mBaiduMap.setOnMarkerClickListener(new OnMarkerClickListener() {private InfoWindow mInfoWindow;public boolean onMarkerClick(final Marker marker) {//弹出窗覆盖物Button button = new Button(getApplicationContext());button.setBackgroundResource(R.drawable.popup);OnInfoWindowClickListener listener = null;if (marker == mMarkerA || marker == mMarkerD) {button.setText("更改位置");listener = new OnInfoWindowClickListener() {public void onInfoWindowClick() {LatLng ll = marker.getPosition();LatLng llNew = new LatLng(ll.latitude + 0.005,ll.longitude + 0.005);marker.setPosition(llNew);mBaiduMap.hideInfoWindow();}};LatLng ll = marker.getPosition();mInfoWindow = new InfoWindow(BitmapDescriptorFactory.fromView(button), ll, -47, listener);mBaiduMap.showInfoWindow(mInfoWindow);} else if (marker == mMarkerB) {button.setText("更改图标");button.setOnClickListener(new OnClickListener() {public void onClick(View v) {marker.setIcon(bd);mBaiduMap.hideInfoWindow();}});LatLng ll = marker.getPosition();mInfoWindow = new InfoWindow(button, ll, -47);mBaiduMap.showInfoWindow(mInfoWindow);} else if (marker == mMarkerC) {button.setText("删除");button.setOnClickListener(new OnClickListener() {public void onClick(View v) {marker.remove();mBaiduMap.hideInfoWindow();}});LatLng ll = marker.getPosition();mInfoWindow = new InfoWindow(button, ll, -47);mBaiduMap.showInfoWindow(mInfoWindow);}return true;}});    }       @Overridepublic boolean onCreateOptionsMenu(Menu menu) { menu.add(1, 1, 1, "隐藏底图标注");   menu.add(1, 2, 2, "标注");   menu.add(1, 3, 3, "文字覆盖物"); menu.add(1, 4, 4, "几何图形覆盖物"); menu.add(1, 5, 5, "地形图图层"); menu.add(1, 6, 6, "清除所有"); return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {switch(item.getItemId()){case 1:if(item.getTitle().toString().equals("隐藏底图标注")){//将底图标注设置为隐藏mBaiduMap.showMapPoi(false);item.setTitle("显示底图标注");}else{mBaiduMap.showMapPoi(true);item.setTitle("隐藏底图标注");}break;case 2:if(item.getTitle().toString().equals("标注")){item.setTitle("清除");OverlayOptions ooA = new MarkerOptions().position(llA).icon(bdA).zIndex(9).alpha(0.5f).draggable(true);mMarkerA = (Marker) (mBaiduMap.addOverlay(ooA));OverlayOptions ooB = new MarkerOptions().position(llB).icon(bdB).zIndex(5);mMarkerB = (Marker) (mBaiduMap.addOverlay(ooB));OverlayOptions ooC = new MarkerOptions().position(llC).icon(bdC).perspective(false).anchor(0.5f, 0.5f).rotate(30).zIndex(7);mMarkerC = (Marker) (mBaiduMap.addOverlay(ooC));ArrayList<BitmapDescriptor> giflist = new ArrayList<BitmapDescriptor>();giflist.add(bdA);giflist.add(bdB);giflist.add(bdC);OverlayOptions ooD = new MarkerOptions().position(llD).icons(giflist).zIndex(0).period(10);mMarkerD = (Marker) (mBaiduMap.addOverlay(ooD));}else{mMarkerA.remove();//调用Marker对象的remove方法实现指定marker的删除mMarkerB.remove();mMarkerC.remove();mMarkerD.remove();mBaiduMap.hideInfoWindow();item.setTitle("标注");}    break;case 3:if(item.getTitle().toString().equals("文字覆盖物")){LatLng llText = new LatLng(39.949016, 116.360288);  //构建文字Option对象，用于在地图上添加文字  OverlayOptions textOption = new TextOptions()      .bgColor(0xAAFFFF00)      .fontSize(24)      .fontColor(0xFFFF00FF)      .text("百度地图SDK")      .rotate(-30)      .position(llText);  //在地图上添加该文字对象并显示  mTextOver=mBaiduMap.addOverlay(textOption);item.setTitle("清除");}else{mTextOver.remove();item.setTitle("文字覆盖物");}break;case 4:if(item.getTitle().toString().equals("几何图形覆盖物")){polygonOverlay();item.setTitle("清除");}else{polygon.remove();mPolyline.remove();item.setTitle("几何图形覆盖物");}break;case 5:if(item.getTitle().toString().equals("地形图图层")){groundOverlay();item.setTitle("清除");}else{mGrond.remove();item.setTitle("地形图图层");}break;case 6:clearOverlay();}return super.onOptionsItemSelected(item);}public void groundOverlay(){// 定义Ground的显示地理范围LatLng southwest = new LatLng(39.92235, 116.380338);LatLng northeast = new LatLng(39.947246, 116.414977);LatLngBounds bounds = new LatLngBounds.Builder().include(northeast).include(southwest).build();OverlayOptions ooGround = new GroundOverlayOptions().positionFromBounds(bounds).image(bdGround).transparency(0.8f);mGrond=mBaiduMap.addOverlay(ooGround);}public void polygonOverlay(){//定义多边形的五个顶点  LatLng pt1 = new LatLng(39.93923, 116.357428);  LatLng pt2 = new LatLng(39.91923, 116.327428);  LatLng pt3 = new LatLng(39.89923, 116.347428);  LatLng pt4 = new LatLng(39.89923, 116.367428);  LatLng pt5 = new LatLng(39.91923, 116.387428);  List<LatLng> pts = new ArrayList<LatLng>();  pts.add(pt1);  pts.add(pt2);  pts.add(pt3);  pts.add(pt4);  pts.add(pt5);  //构建用户绘制多边形的Option对象  OverlayOptions polygonOption = new PolygonOptions()      .points(pts)      .stroke(new Stroke(5, 0xAA00FF00))      .fillColor(0xAAFFFF00);  //在地图上添加多边形Option，用于显示  polygon=mBaiduMap.addOverlay(polygonOption);//自v3.6.0版本起，扩展了折线多段颜色绘制能力：增加支持分段纹理绘制、分段颜色绘制,实现的核心代码如下：//构造PolylineOptions对象，添加折线分段颜色绘制覆盖物， // 构造折线点坐标List<LatLng> points = new ArrayList<LatLng>();points.add(new LatLng(39.965,116.404));points.add(new LatLng(39.925,116.454));points.add(new LatLng(39.955,116.494));points.add(new LatLng(39.905,116.554));points.add(new LatLng(39.965,116.604)); //构建分段颜色索引数组List<Integer> colors = new ArrayList<Integer>();colors.add(Integer.valueOf(Color.BLUE));colors.add(Integer.valueOf(Color.RED));colors.add(Integer.valueOf(Color.YELLOW));colors.add(Integer.valueOf(Color.GREEN)); OverlayOptions ooPolyline = new PolylineOptions().width(10)        .colorsValues(colors).points(points);//添加在地图中mPolyline = (Polyline) mBaiduMap.addOverlay(ooPolyline);}/** * 清除所有Overlay *  * @param view */public void clearOverlay() {mBaiduMap.clear();}@Override      protected void onResume() {          super.onResume();          //在activity执行onResume时执行mMapView. onResume ()，实现地图生命周期管理          mMapView.onResume();          }      @Override      protected void onPause() {          super.onPause();          //在activity执行onPause时执行mMapView. onPause ()，实现地图生命周期管理          mMapView.onPause();          }      @Override      protected void onDestroy() {          super.onDestroy();          //在activity执行onDestroy时执行mMapView.onDestroy()，实现地图生命周期管理          mMapView.onDestroy();      }}</span>