安卓百度地图sdk定位的使用(百度地图sdk获取定位)
进入百度地图开放平台 百度地图开放平台 | 百度地图API SDK | 地图开发 创建应用这写简单没有技术含量的教程就跳过，主要总结使用中的细节
集成sdk
在Project的build.gradle文件中配置repositories，添加mavenCentral仓库地址
allprojects { repositories { mavenCentral() } } 复制代码导入依赖
接着再app下的build.gradle导入依赖
implementation 'com.baidu.lbsyun:BaiduMapSDK_Search:7.4.0'//检索组件 implementation 'com.baidu.lbsyun:BaiduMapSDK_Util:7.4.0'//工具组件 implementation 'com.baidu.lbsyun:BaiduMapSDK_Location:9.1.8'//基础定位组件 implementation 'com.baidu.lbsyun:BaiduMapSDK_Map-AllNavi:7.4.0'//导航 implementation 'com.baidu.lbsyun:NaviTts:2.5.5'//TTS语言 复制代码
记得获取SHA1配置 Key哦，官网有教程，这里就不讲了
BaiduMap
获取地图控件引用
mMapView = binding.bmapView; mBaiduMap = mMapView.getMap(); mBaiduMap.setMyLocationEnabled(true); 复制代码
获取地图控件引用
定位
定位初始化
//定位初始化 new LocationClient(getContext()) //通过LocationClientOption设置LocationClient相关参数 LocationClientOption option = new LocationClientOption() // 打开gps option.setOpenGps(true) // 设置坐标类型 option.setCoorType("bd09ll")
private void initMap() { //获取地图控件引用 mMapView = binding.bmapView; mBaiduMap = mMapView.getMap(); mBaiduMap.setMyLocationEnabled(true); //定位初始化 mLocationClient = new LocationClient(getContext()); //通过LocationClientOption设置LocationClient相关参数 LocationClientOption option = new LocationClientOption(); // 打开gps option.setOpenGps(true); // 设置坐标类型 option.setCoorType("bd09ll"); option.setScanSpan(1000); option.setIsNeedAddress(true); option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy); // option.setLocationMode(LocationClientOption.LocationMode.Battery_Saving); //option.setLocationMode(LocationClientOption.LocationMode.Device_Sensors); //设置locationClientOption mLocationClient.setLocOption(option); //注册LocationListener监听器 MyLocationListeners myLocationListener = new MyLocationListeners(); mLocationClient.registerLocationListener(myLocationListener); //开启地图定位图层 mLocationClient.start(); } 复制代码接着实现抽象位置监听器
public class MyLocationListeners extends BDAbstractLocationListener { @Override public void onReceiveLocation(BDLocation location) { //mapView 销毁后不在处理新接收的位置 if (location == null || mMapView == null) { return; } // 如果是第一次定位 LatLng ll = new LatLng(location.getLatitude(), location.getLongitude()); if (isFirstLocate) { isFirstLocate = false; //给地图设置状态 mBaiduMap.animateMapStatus(MapStatusUpdateFactory.newLatLng(ll)); } MyLocationData locData = new MyLocationData.Builder() .accuracy(location.getRadius()) // 此处设置开发者获取到的方向信息，顺时针0-360 .direction(location.getDirection()) .latitude(location.getLatitude()) .longitude(location.getLongitude()) .build(); mBaiduMap.setMyLocationData(locData); curr_city = location.getCity(); } } 复制代码| 通过BDLocation定位的回调获取详细信息 | |
|---|---|
| location.getCity() | 城市 |
| location.getAddrStr() | 地点 |
| location.getLatitude() | 经度 |
| location.getLongitude() | 纬度 |
需要再LocationClientOption设置setIsNeedAddress才能获取到经纬度,否则返回空
LocationClientOption option = new LocationClientOption(); option.setIsNeedAddress(true); 复制代码
实现地图生命周期管理
防止内存泄漏
@Override public void onResume() { super.onResume(); mMapView.onResume(); } @Override public void onPause() { super.onPause(); mMapView.onPause(); } @Override public void onDestroyView() { mLocationClient.stop(); mBaiduMap.setMyLocationEnabled(false); mMapView.onDestroy(); mMapView = null; super.onDestroyView(); binding = null; } 复制代码处理sug检索
edit编辑框
<EditText android:id="@+id/et_search" ... android:hint="输入目的地" /> 复制代码
输入监听
etSearch.addTextChangedListener( new TextWatcher() { ... @Override public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) { String search = etSearch.getText().toString(); mSuggestionSearch.requestSuggestion(new SuggestionSearchOption() .city(BDLocation定位的回调获取到当前的城市} .keyword(search)); //如果空就隐藏列表 if (search.equals("")) { card.setVisibility(View.GONE); } } }); ... 复制代码card里面放入RecyclerView这个简单就不贴了哦
OnGetSuggestionResultListener listener = suggestionResult -> { //处理sug检索结果 if (suggestionResult != null && suggestionResult.getAllSuggestions() != null) { placeList.clear(); for (SuggestionResult.SuggestionInfo info : suggestionResult.getAllSuggestions()) { PlacehBean bean = new PlacehBean(); bean.setCity(info.city); bean.setAddress(info.address); bean.setLatitude(info.getPt().latitude); bean.setLongitude(info.getPt().longitude); placeList.add(bean); } //刷新RecyclerView mSearcPlacehAdapter.notifyDataSetChanged(); card.setVisibility(View.VISIBLE); } else { Log.d(TAG, "处理sug检索结果 null"); } }; mSuggestionSearch.setOnGetSuggestionResultListener(listener); 复制代码热力图
利用FavoriteManager来实现热区的添加，添加的数据是保存再本地的
implements OnMapLongClickListener 复制代码
拿到经纬度
@Override public void onMapLongClick(LatLng point) { mEditLocation.setText(String.valueOf(point.latitude) + "," + String.valueOf(point.longitude)); MarkerOptions ooA = new MarkerOptions().position(point).icon(bitmapA); mBaiduMap.clear(); mBaiduMap.addOverlay(ooA); } 复制代码保存
FavoritePoiInfo info = new FavoritePoiInfo(); info.poiName(mEditName.getText().toString()); LatLng latLng; try { String strLatLng = mEditLocation.getText().toString(); String lat = strLatLng.substring(0, strLatLng.indexOf(",")); String lng = strLatLng.substring(strLatLng.indexOf(",") + 1); latLng = new LatLng(Double.parseDouble(lat), Double.parseDouble(lng)); info.pt(latLng); if (FavoriteManager.getInstance().add(info) == 1) { Toast.makeText(ManageRiskPlace.this, "添加成功", Toast.LENGTH_LONG).show(); } else { Toast.makeText(ManageRiskPlace.this, "添加失败", Toast.LENGTH_LONG).show(); return; } } catch (Exception e) { Toast.makeText(ManageRiskPlace.this, "坐标解析错误", Toast.LENGTH_LONG).show(); return; } 复制代码在地图上更新当前最新添加的点
mBaiduMap.clear(); List<FavoritePoiInfo> list = FavoriteManager.getInstance().getAllFavPois(); if(null == list || list.size() == 0){ return; } MarkerOptions option = new MarkerOptions().icon(bitmapA).position(list.get(0).getPt()); Bundle bundle = new Bundle(); bundle.putString("id", list.get(0).getID()); option.extraInfo(bundle); Marker currentMarker = (Marker) mBaiduMap.addOverlay(option); markers.add(currentMarker); 复制代码显示热力图
初始化
private HeatMap mHeatmap; List<LatLng> latLngHeatmapList = new ArrayList<>(); 复制代码
获取全部添加的热力区并显示热区
public void getAllClick(View v) { mBaiduMap.clear(); List<FavoritePoiInfo> list = FavoriteManager.getInstance().getAllFavPois(); if (list == null || list.size() == 0) { Toast.makeText(ManageRiskPlace.this, "没有收藏点", Toast.LENGTH_LONG).show(); return; } latLngHeatmapList.clear(); // 绘制在地图 markers.clear(); for (int i = 0; i < list.size(); i++) { MarkerOptions option = new MarkerOptions().icon(bitmapA).position(list.get(i).getPt()); Bundle b = new Bundle(); b.putString("id", list.get(i).getID()); option.extraInfo(b); markers.add((Marker) mBaiduMap.addOverlay(option)); latLngHeatmapList.add(list.get(i).getPt()); } //添加热区 addHeatMap(); } 复制代码加载热区的数据 latLngHeatmapList.add(list.get(i).getPt());
//添加热区 private void addHeatMap() { final Handler handler = new Handler() { @Override public void handleMessage(Message msg) { super.handleMessage(msg); if (!isDestroy) { mBaiduMap.addHeatMap(mHeatmap); } } }; new Thread() { @Override public void run() { super.run(); mHeatmap = new HeatMap.Builder().data(latLngHeatmapList).radius(36).build(); handler.sendEmptyMessage(0); } }.start(); } 复制代码radius(热区半径)
作者：九狼
链接：https://juejin.cn/post/7069040204773851173