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：
