Android百度地图开发（三）范围搜索

1.新建项目

将地图API添加进classpath中：

2.在activity_main.xml中添加一个MapView，用来显示地图：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <!-- 添加显示地图的控件 -->

    <com.baidu.mapapi.MapView
        android:id="@+id/bmapView"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:clickable="true" />

</LinearLayout>

3.修改AndroidManifest.xml文件，指定用户权限

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" >
    </uses-permission>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" >
    </uses-permission>
    <uses-permission android:name="android.permission.INTERNET" >
    </uses-permission>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" >
    </uses-permission>
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" >
    </uses-permission>
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" >
    </uses-permission>
    <uses-permission android:name="android.permission.READ_PHONE_STATE" >
    </uses-permission>
    <uses-permission android:name="android.permission.CALL_PHONE" >
    </uses-permission>

    <supports-screens
        android:anyDensity="true"
        android:largeScreens="true"
        android:normalScreens="false"
        android:resizeable="true"
        android:smallScreens="true" />

3.初始化地图引擎

        bMapManager = new BMapManager(MainActivity.this);
        bMapManager.init(keyString, new MKGeneralListener() {
            @Override
            public void onGetPermissionState(int arg0) {
                // TODO Auto-generated method stub
            }

            @Override
            public void onGetNetworkState(int arg0) {
                // TODO Auto-generated method stub
                if (arg0 == 300) {
                    Toast.makeText(MainActivity.this, "输入的key有误，请核实！", 1)
                            .show();
                }
            }
        });
        initMapActivity(bMapManager);    //初始化地图引擎

4.取得MapView组件

mapView = (MapView) findViewById(R.id.bmapView);

5.实例化search对象并添加监听

mkSearch = new MKSearch();
mkSearch.init(bMapManager, new MySearchListener());

监听类：

private class MySearchListener implements MKSearchListener {

        @Override
        public void onGetAddrResult(MKAddrInfo arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetBusDetailResult(MKBusLineResult arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetDrivingRouteResult(MKDrivingRouteResult arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetPoiDetailSearchResult(int arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetPoiResult(MKPoiResult result, int type, int isError) {
            // TODO Auto-generated method stub
            if(result == null){
                return;
            }
            PoiOverlay poiOverlay = new PoiOverlay(MainActivity.this, mapView);
            poiOverlay.setData(result.getAllPoi());
            mapView.getOverlays().add(poiOverlay);
            mapView.invalidate();
        }

        @Override
        public void onGetRGCShareUrlResult(String arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetSuggestionResult(MKSuggestionResult arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetTransitRouteResult(MKTransitRouteResult arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetWalkingRouteResult(MKWalkingRouteResult arg0, int arg1) {
            // TODO Auto-generated method stub

        }
    }

6.根据关键词、中心点、半径进行搜索。

// 关键词，中心点，范围半径
mkSearch.poiSearchNearBy("KFC", new GeoPoint((int) (39.915 * 1E6), (int) (116.404 * 1E6)), 5000);

7.恢复、暂停、停止地图时地图引擎的操作

    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        if (bMapManager != null) {
            bMapManager.destroy();
            bMapManager = null;
        }
    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        if (bMapManager != null) {
            bMapManager.start();
        }
    }

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        if (bMapManager != null) {
            bMapManager.stop();
        }
    }

完整代码：

package com.example.baiduhellopoioverlay;

import android.os.Bundle;
import android.view.Menu;
import android.widget.Toast;

import com.baidu.mapapi.BMapManager;
import com.baidu.mapapi.GeoPoint;
import com.baidu.mapapi.MKAddrInfo;
import com.baidu.mapapi.MKBusLineResult;
import com.baidu.mapapi.MKDrivingRouteResult;
import com.baidu.mapapi.MKGeneralListener;
import com.baidu.mapapi.MKPoiResult;
import com.baidu.mapapi.MKSearch;
import com.baidu.mapapi.MKSearchListener;
import com.baidu.mapapi.MKSuggestionResult;
import com.baidu.mapapi.MKTransitRouteResult;
import com.baidu.mapapi.MKWalkingRouteResult;
import com.baidu.mapapi.MapActivity;
import com.baidu.mapapi.MapView;
import com.baidu.mapapi.PoiOverlay;

public class MainActivity extends MapActivity {

    private MapView mapView;
    private BMapManager bMapManager;
    private String keyString = "43D220AAB0DEC976D2EABC83CFC9EEE52BCCCA7A";
    private MKSearch mkSearch;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        bMapManager = new BMapManager(MainActivity.this);
        bMapManager.init(keyString, new MKGeneralListener() {
            @Override
            public void onGetPermissionState(int arg0) {
                // TODO Auto-generated method stub
            }

            @Override
            public void onGetNetworkState(int arg0) {
                // TODO Auto-generated method stub
                if (arg0 == 300) {
                    Toast.makeText(MainActivity.this, "输入的key有误，请核实！", 1)
                            .show();
                }
            }
        });
        initMapActivity(bMapManager);    //初始化地图引擎
        mapView = (MapView) findViewById(R.id.bmapView);
        mkSearch = new MKSearch();
        mkSearch.init(bMapManager, new MySearchListener());

        // 关键词，中心点，范围半径
        mkSearch.poiSearchNearBy("KFC", new GeoPoint((int) (39.915 * 1E6),
                (int) (116.404 * 1E6)), 5000);
    }

    private class MySearchListener implements MKSearchListener {

        @Override
        public void onGetAddrResult(MKAddrInfo arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetBusDetailResult(MKBusLineResult arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetDrivingRouteResult(MKDrivingRouteResult arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetPoiDetailSearchResult(int arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetPoiResult(MKPoiResult result, int type, int isError) {
            // TODO Auto-generated method stub
            if(result == null){
                return;
            }
            PoiOverlay poiOverlay = new PoiOverlay(MainActivity.this, mapView);
            poiOverlay.setData(result.getAllPoi());
            mapView.getOverlays().add(poiOverlay);
            mapView.invalidate();
        }

        @Override
        public void onGetRGCShareUrlResult(String arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetSuggestionResult(MKSuggestionResult arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetTransitRouteResult(MKTransitRouteResult arg0, int arg1) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onGetWalkingRouteResult(MKWalkingRouteResult arg0, int arg1) {
            // TODO Auto-generated method stub

        }
    }

    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        if (bMapManager != null) {
            bMapManager.destroy();
            bMapManager = null;
        }
    }

    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        if (bMapManager != null) {
            bMapManager.start();
        }
    }

    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        if (bMapManager != null) {
            bMapManager.stop();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    protected boolean isRouteDisplayed() {
        // TODO Auto-generated method stub
        return false;
    }

}

运行结果：