在 Android 地图上实现周边 POI 列表搜索功能

public class New_LocalActivity extends Activity implements LocationSource, AMapLocationListener, AMap.OnCameraChangeListener, PoiSearch.OnPoiSearchListener { @BindView(R.id.map_local) MapView mapView; @BindView(R.id.map_list) ListView mapList; public static final String KEY_LAT = "lat"; public static final String KEY_LNG = "lng"; public static final String KEY_DES = "des"; private AMapLocationClient mLocationClient; private LocationSource.OnLocationChangedListener mListener; private LatLng latlng; private String city; private AMap aMap; private String deepType = "";// poi搜索类型 private PoiSearch.Query query;// Poi查询条件类 private PoiSearch poiSearch; private PoiResult poiResult; // poi返回的结果 private PoiOverlay poiOverlay;// poi图层 private List<PoiItem> poiItems;// poi数据 private PoiSearch_adapter adapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_new__local); ButterKnife.bind(this); mapView.onCreate(savedInstanceState); init(); } private void init() { if (aMap == null) { aMap = mapView.getMap(); aMap.setOnCameraChangeListener(this); setUpMap(); } deepType = "餐饮";//这里以餐饮为例 } //-------- 定位 Start ------ private void setUpMap() { if (mLocationClient == null) { mLocationClient = new AMapLocationClient(getApplicationContext()); AMapLocationClientOption mLocationOption = new AMapLocationClientOption(); //设置定位监听 mLocationClient.setLocationListener(this); //设置为高精度定位模式 mLocationOption.setOnceLocation(true); mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy); //设置定位参数 mLocationClient.setLocationOption(mLocationOption); mLocationClient.startLocation(); } // 自定义系统定位小蓝点 MyLocationStyle myLocationStyle = new MyLocationStyle(); myLocationStyle.myLocationIcon(BitmapDescriptorFactory .fromResource(R.drawable.location_marker));// 设置小蓝点的图标 myLocationStyle.strokeColor(Color.BLACK);// 设置圆形的边框颜色 myLocationStyle.radiusFillColor(Color.argb(100, 0, 0, 180));// 设置圆形的填充颜色 myLocationStyle.strokeWidth(1.0f);// 设置圆形的边框粗细 aMap.setMyLocationStyle(myLocationStyle); aMap.setLocationSource(this);// 设置定位监听 aMap.getUiSettings().setMyLocationButtonEnabled(true);// 设置默认定位按钮是否显示 aMap.setMyLocationEnabled(true);// 设置为true表示显示定位层并可触发定位，false表示隐藏定位层并不可触发定位，默认是false } /** * 开始进行poi搜索 */ protected void doSearchQuery() { aMap.setOnMapClickListener(null);// 进行poi搜索时清除掉地图点击事件 int currentPage = 0; query = new PoiSearch.Query("", deepType, city);// 第一个参数表示搜索字符串，第二个参数表示poi搜索类型，第三个参数表示poi搜索区域（空字符串代表全国） query.setPageSize(20);// 设置每页最多返回多少条poiitem query.setPageNum(currentPage);// 设置查第一页 LatLonPoint lp = new LatLonPoint(latlng.latitude, latlng.longitude); poiSearch = new PoiSearch(this, query); poiSearch.setOnPoiSearchListener(this); poiSearch.setBound(new PoiSearch.SearchBound(lp, 5000, true)); // 设置搜索区域为以lp点为圆心，其周围2000米范围 poiSearch.searchPOIAsyn();// 异步搜索 } @Override public void onLocationChanged(AMapLocation aMapLocation) { if (mListener != null && aMapLocation != null) { if (aMapLocation.getErrorCode() == 0) { // 显示我的位置 mListener.onLocationChanged(aMapLocation); //设置第一次焦点中心 latlng = new LatLng(aMapLocation.getLatitude(), aMapLocation.getLongitude()); aMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latlng, 14), 1000, null); city = aMapLocation.getProvince(); doSearchQuery(); } else { String errText = "定位失败," + aMapLocation.getErrorCode() + ": " + aMapLocation.getErrorInfo(); Log.e("AmapErr", errText); } } } @Override public void activate(OnLocationChangedListener listener) { mListener = listener; mLocationClient.startLocation(); } @Override public void deactivate() { mListener = null; if (mLocationClient != null) { mLocationClient.stopLocation(); mLocationClient.onDestroy(); } mLocationClient = null; } @Override public void onCameraChange(CameraPosition cameraPosition) { } @Override public void onCameraChangeFinish(CameraPosition cameraPosition) { latlng = cameraPosition.target; aMap.clear(); aMap.addMarker(new MarkerOptions().position(latlng)); doSearchQuery(); } @Override public void onPoiSearched(PoiResult result, int rCode) { if (rCode == 0) { if (result != null && result.getQuery() != null) {// 搜索poi的结果 if (result.getQuery().equals(query)) {// 是否是同一条 poiResult = result; poiItems = poiResult.getPois();// 取得第一页的poiitem数据，页数从数字0开始 List<SuggestionCity> suggestionCities = poiResult .getSearchSuggestionCitys(); if (poiItems != null && poiItems.size() > 0) { adapter = new PoiSearch_adapter(this, poiItems); mapList.setAdapter(adapter); mapList.setOnItemClickListener(new mOnItemClickListener()); } } else { Logger.d("无结果"); } } } else { Logger.e("无结果"); } } else if (rCode == 27) { Logger.e("error_network"); } else if (rCode == 32) { Logger.e("error_key"); } else { Logger.e("error_other：" + rCode); } } @Override public void onPoiItemSearched(PoiItem poiItem, int i) { } //-------- 定位 End ------ @Override protected void onResume() { super.onResume(); mLocationClient.startLocation(); } @Override protected void onPause() { super.onPause(); mLocationClient.stopLocation(); } @Override protected void onDestroy() { mLocationClient.onDestroy(); super.onDestroy(); } private class mOnItemClickListener implements AdapterView.OnItemClickListener { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { Intent intent = new Intent(); intent.putExtra(KEY_LAT, poiItems.get(position).getLatLonPoint().getLatitude()); intent.putExtra(KEY_LNG, poiItems.get(position).getLatLonPoint().getLongitude()); intent.putExtra(KEY_DES, poiItems.get(position).getTitle()); setResult(RESULT_OK, intent); finish(); } }