上一次我们使用百度地图实现基本的定位功能，接下来我们继续实现搜索和定位，并使用LocationOverlay绘制定位位置，同时展示如何使用自定义图标绘制并点击时弹出泡泡
如图所示：
public class MyApplication extends Application {private static MyApplication mInstance = null;public boolean m_bKeyRight = true;public BMapManager mBMapManager = null;public static final String strKey = "申请的应用key";@Overridepublic void onCreate() {super.onCreate();mInstance = this;initEngineManager(this);}public void initEngineManager(Context context) {if (mBMapManager == null) {mBMapManager = new BMapManager(context);}if (!mBMapManager.init(strKey,new MyGeneralListener())) {Toast.makeText(MyApplication.getInstance().getApplicationContext(), "BMapManager 初始化错误!", Toast.LENGTH_LONG).show();}}public static MyApplication getInstance() {return mInstance;}// 常用事件监听，用来处理通常的网络错误，授权验证错误等public static class MyGeneralListener implements MKGeneralListener {@Overridepublic void onGetNetworkState(int iError) {if (iError == MKEvent.ERROR_NETWORK_CONNECT) {Toast.makeText(MyApplication.getInstance().getApplicationContext(), "您的网络出错啦！",Toast.LENGTH_LONG).show();}else if (iError == MKEvent.ERROR_NETWORK_DATA) {Toast.makeText(MyApplication.getInstance().getApplicationContext(), "输入正确的检索条件！",Toast.LENGTH_LONG).show();}}@Overridepublic void onGetPermissionState(int iError) {//非零值表示key验证未通过if (iError != 0) {//授权Key错误： Toast.makeText(MyApplication.getInstance().getApplicationContext(), "请在 DemoApplication.java文件输入正确的授权Key,并检查您的网络连接是否正常！error: "+iError, Toast.LENGTH_LONG).show();MyApplication.getInstance().m_bKeyRight = true;}else{MyApplication.getInstance().m_bKeyRight = true;//Toast.makeText(DemoApplication.getInstance().getApplicationContext(), "key认证成功", Toast.LENGTH_LONG).show(); }}}}
public class MyLocationMapView extends MapView {public static PopupOverlay pop = null;// 弹出泡泡图层，点击图标使用public MyLocationMapView(Context context) {super(context);}public MyLocationMapView(Context context, AttributeSet attrs) {super(context, attrs);}public MyLocationMapView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);}@Overridepublic boolean onTouchEvent(MotionEvent event) {if (!super.onTouchEvent(event)) {// 消隐泡泡if (pop != null && event.getAction() == MotionEvent.ACTION_UP)pop.hidePop();}return true;}}
编写主程序MainActivity，用来展示如何结合定位SDK实现定位，并使用MyLocationOverlay绘制定位位置 同时展示如何使用自定义图标绘制并点击时弹出泡泡。
public class MainActivity extends Activity {private EditText txtAddr;// 定位相关 LocationClient mLocClient;LocationData locData = null;public MyLocationListenner myListener = new MyLocationListenner();public MyApplication app;//定位图层locationOverlay myLocationOverlay = null;//弹出泡泡图层private PopupOverlay pop = null;//弹出泡泡图层，浏览节点时使用private TextView popupText = null;//泡泡viewprivate View viewCache = null;//地图相关，使用继承MapView的MyLocationMapView目的是重写touch事件实现泡泡处理//如果不处理touch事件，则无需继承，直接使用MapView即可public MyLocationMapView mMapView = null; // 地图Viewprivate MapController mMapController = null;private MKSearch mMKSearch = null;//用于信息检索服务 //UI相关OnCheckedChangeListener radioButtonListener = null;TextView requestLocButton ,btSerach;boolean isRequest = false;//是否手动触发请求定位boolean isFirstLoc = true;//是否首次定位 @Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);/*** 使用地图sdk前需先初始化BMapManager.* BMapManager是全局的，可为多个MapView共用，它需要地图模块创建前创建，* 并在地图地图模块销毁后销毁，只要还有地图模块在使用，BMapManager就不应该销毁*/app = (MyApplication)this.getApplication();if (app.mBMapManager == null) {app.mBMapManager = new BMapManager(getApplicationContext());/*** 如果BMapManager没有初始化则初始化BMapManager*/app.mBMapManager.init(MyApplication.strKey,new MyApplication.MyGeneralListener());}setContentView(R.layout.activity_main);txtAddr=(EditText)findViewById(R.id.txtAddr);//关键字输入框//监听搜索单击事件btSerach= (TextView)findViewById(R.id.btOk);btSerach.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {mMKSearch.poiSearchInCity("", txtAddr.getText().toString()); }});//定位按钮requestLocButton = (TextView)findViewById(R.id.btget);requestLocButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {requestLocClick();}});//地图初始化mMapView = (MyLocationMapView)findViewById(R.id.bmapView);mMapView.setTraffic(true);//设置地图模式为交通视图(也可为卫星视图) mMapController = mMapView.getController();mMapView.getController().setZoom(15);mMapView.getController().enableClick(true);mMapView.setBuiltInZoomControls(true);//信息检索初始化mMKSearch = new MKSearch(); mMKSearch.init(app.mBMapManager, new MKSearchListener() {@Overridepublic void onGetAddrResult(MKAddrInfo arg0, int arg1) {}@Overridepublic void onGetBusDetailResult(MKBusLineResult arg0, int arg1) {}@Overridepublic void onGetDrivingRouteResult(MKDrivingRouteResult arg0,int arg1) {}@Overridepublic void onGetPoiDetailSearchResult(int arg0, int arg1) {}@Overridepublic void onGetPoiResult(MKPoiResult res, int type, int error) {if (error == MKEvent.ERROR_RESULT_NOT_FOUND) {Toast.makeText(MainActivity.this, "抱歉，未找到结果",Toast.LENGTH_LONG).show();return;} else if (error != 0 || res == null) {Toast.makeText(MainActivity.this, "搜索出错啦.."+error,Toast.LENGTH_LONG).show();return;}PoiOverlay poiOverlay = new PoiOverlay(MainActivity.this,mMapView);poiOverlay.setData(res.getAllPoi());mMapView.getOverlays().clear();mMapView.getOverlays().add(poiOverlay);mMapView.refresh();for (MKPoiInfo info : res.getAllPoi()) {if (info.pt != null) {mMapView.getController().animateTo(info.pt);break;}}}@Overridepublic void onGetShareUrlResult(MKShareUrlResult arg0, int arg1,int arg2) {}@Overridepublic void onGetSuggestionResult(MKSuggestionResult arg0, int arg1){}@Overridepublic void onGetTransitRouteResult(MKTransitRouteResult arg0,int arg1) {}@Overridepublic void onGetWalkingRouteResult(MKWalkingRouteResult arg0,int arg1) {}});createPaopao();//定位初始化mLocClient = new LocationClient( this );locData = new LocationData();mLocClient.registerLocationListener( myListener );LocationClientOption option = new LocationClientOption();option.setOpenGps(true);//打开gpsoption.setAddrType("all");//返回的定位结果包含地址信息option.disableCache(false);//禁止启用缓存定位option.setCoorType("bd09ll");//设置坐标类型option.setScanSpan(1000);mLocClient.setLocOption(option);mLocClient.start();//定位图层初始化myLocationOverlay = new locationOverlay(mMapView);//设置定位数据 myLocationOverlay.setData(locData);//添加定位图层 mMapView.getOverlays().add(myLocationOverlay);myLocationOverlay.enableCompass();//修改定位数据后刷新图层生效 mMapView.refresh();}/*** 手动触发一次定位请求*/public void requestLocClick(){isRequest = true;mLocClient.requestLocation();Toast.makeText(MainActivity.this, "正在定位……", Toast.LENGTH_SHORT).show();}/*** 创建弹出泡泡图层*/public void createPaopao(){viewCache = getLayoutInflater().inflate(R.layout.custom_text_view, null);popupText =(TextView) viewCache.findViewById(R.id.textcache);//泡泡点击响应回调PopupClickListener popListener = new PopupClickListener(){@Overridepublic void onClickedPopup(int index) {}};pop = new PopupOverlay(mMapView,popListener);MyLocationMapView.pop = pop;}/*** 定位SDK监听函数*/public class MyLocationListenner implements BDLocationListener {@Overridepublic void onReceiveLocation(BDLocation location) {if (location == null)return ;locData.latitude = location.getLatitude();locData.longitude = location.getLongitude();//如果不显示定位精度圈，将accuracy赋值为0即可locData.accuracy = location.getRadius();// 此处可以设置 locData的方向信息, 如果定位 SDK 未返回方向信息，用户可以自己实现罗盘功能添加方向信息。locData.direction = location.getDerect();//更新定位数据 myLocationOverlay.setData(locData);//更新图层数据执行刷新后生效 mMapView.refresh();//是手动触发请求或首次定位时，移动到定位点if (isRequest || isFirstLoc){//移动地图到定位点//Log.d("LocationOverlay", "receive location, animate to it");mMapController.animateTo(new GeoPoint((int)(locData.latitude* 1e6), (int)(locData.longitude * 1e6)));isRequest = false;myLocationOverlay.setLocationMode(LocationMode.FOLLOWING);}//首次定位完成isFirstLoc = false;}public void onReceivePoi(BDLocation poiLocation) {if (poiLocation == null){return ;}}}//继承MyLocationOverlay重写dispatchTap实现点击处理public class locationOverlay extends MyLocationOverlay{public locationOverlay(MapView mapView) {super(mapView);}@Overrideprotected boolean dispatchTap() {//处理点击事件,弹出泡泡 popupText.setBackgroundResource(R.drawable.popup);popupText.setText(mLocClient.getLastKnownLocation().getAddrStr());pop.showPopup(BMapUtil.getBitmapFromView(popupText),new GeoPoint((int)(locData.latitude*1e6), (int)(locData.longitude*1e6)),8);return true;}}@Overrideprotected void onPause() {mMapView.onPause();if(app.mBMapManager!=null){ app.mBMapManager.stop(); } super.onPause();}@Overrideprotected void onResume() {mMapView.onResume();if(app.mBMapManager!=null){ app.mBMapManager.start(); }super.onResume();}@Overrideprotected void onDestroy() {//退出时销毁定位if (mLocClient != null)mLocClient.stop();mMapView.destroy();if(app.mBMapManager!=null){ app.mBMapManager.destroy(); app.mBMapManager=null; } super.onDestroy();}@Overrideprotected void onSaveInstanceState(Bundle outState) {super.onSaveInstanceState(outState);mMapView.onSaveInstanceState(outState); }@Overrideprotected void onRestoreInstanceState(Bundle savedInstanceState) {super.onRestoreInstanceState(savedInstanceState);mMapView.onRestoreInstanceState(savedInstanceState);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {return true;}}
MainActivity的布局文件如下：
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent" ><FrameLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent" ><com.jerehedu.ljb.MyLocationMapViewandroid:id="@+id/bmapView"android:layout_width="fill_parent"android:layout_height="fill_parent"android:clickable="true" /><RelativeLayoutandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_marginLeft="10dp"android:layout_marginRight="10dp"android:layout_marginTop="10dp"android:background="@drawable/edit_bg_all" ><EditTextandroid:id="@+id/txtAddr"android:layout_width="fill_parent"android:layout_height="40dp"android:layout_centerVertical="true"android:layout_marginRight="2dp"android:layout_toLeftOf="@+id/btOk"android:background="@drawable/edit_bg_all"android:completionThreshold="2"android:drawableLeft="@drawable/qz_icon_seabar_search"android:hint="请输入搜索关键字" /><TextViewandroid:id="@+id/btOk"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerVertical="true"android:layout_marginRight="2dp"android:layout_toLeftOf="@+id/s2"android:text="搜索"android:textSize="18sp" /><ImageViewandroid:id="@+id/s2"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerVertical="true"android:layout_marginRight="2dp"android:layout_toLeftOf="@+id/btget"android:src="@drawable/slide_center" /><TextViewandroid:id="@+id/btget"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:layout_centerVertical="true"android:text="定位"android:textSize="18sp" /></RelativeLayout></FrameLayout></RelativeLayout>
