基于android studio的百度地图（放大缩小搜索功能）

首先我们需要下载百度SDK包

这个复制在这里

还有百度官方的代码也已经打好了。

自行导入。直接复制全部java,之后粘贴在工程里面

这是布局

布局.xml代码如下

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
 >
    <com.baidu.mapapi.map.MapView
        android:id="@+id/bmapView"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_weight="3"
        android:clickable="true"
        />
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_weight="0"
        >
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="放大"
            android:id="@+id/bt_left"
            />

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="缩小"
            android:id="@+id/bt_center"
            />
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="搜索"
            android:id="@+id/bt_right"
            />

        <EditText
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/et_search"
            android:hint="输入地点"
            android:layout_weight="1"
            />
        </LinearLayout>
</LinearLayout>

MainActivity

package com.huangfushi.hfs214baiduditu;

import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.location.Poi;
import com.baidu.mapapi.map.MapStatusUpdate;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MyLocationConfiguration;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.model.LatLng;
import com.baidu.mapapi.model.LatLngBounds;
import com.baidu.mapapi.search.core.PoiInfo;
import com.baidu.mapapi.search.core.SearchResult;
import com.baidu.mapapi.search.poi.OnGetPoiSearchResultListener;
import com.baidu.mapapi.search.poi.PoiBoundSearchOption;
import com.baidu.mapapi.search.poi.PoiDetailResult;

import com.baidu.mapapi.search.poi.PoiIndoorResult;
import com.baidu.mapapi.search.poi.PoiResult;
import com.baidu.mapapi.search.poi.PoiSearch;
import com.baidu.mapapi.search.route.BikingRouteResult;
import com.baidu.mapapi.search.route.DrivingRouteResult;

import com.baidu.mapapi.search.route.OnGetRoutePlanResultListener;
import com.baidu.mapapi.search.route.PlanNode;
import com.baidu.mapapi.search.route.RoutePlanSearch;
import com.baidu.mapapi.search.route.TransitRouteResult;
import com.baidu.mapapi.search.route.WalkingRouteLine;
import com.baidu.mapapi.search.route.WalkingRoutePlanOption;
import com.baidu.mapapi.search.route.WalkingRouteResult;

import java.util.List;

public class MainActivity extends BaseActivity {
    public LocationClient mLocationclient = null;
    public BDLocationListener myListener = new MyLocationListener();
    private double latitude;//实时的纬度
    private double longitude;//实时的精度
    private LatLng resultPosition;
    private Button bt_right;
    private EditText et_search;
    private String searchContent;
    protected RoutePlanSearch routePlanSearch;
    private WalkingRouteOverlay overlay;//地图上覆盖走路路线
    private Button bt_center;
    private Button bt_left;
    private MapStatusUpdate mapStatusUpdate;

    @Override
    public void init() {
        bt_right = (Button) findViewById(R.id.bt_right);//搜索按钮
        et_search = (EditText) findViewById(R.id.et_search);
        bt_center = (Button) findViewById(R.id.bt_center);//缩小按钮
        bt_left = (Button) findViewById(R.id.bt_left);//放大按钮
        // 初始化按键点击事件
        initButton();
//覆盖物对象
        overlay = new WalkingRouteOverlay(baiduMap);
        mLocationclient = new LocationClient(getApplicationContext());//声明Locationclient类
        mLocationclient.registerLocationListener(myListener);//注册监听函数
        initLocation();
//设置定位参数
        baiduMap.setMyLocationEnabled(true);
        setLocationConfig();
        mLocationclient.start();
    }

    private void initButton() {
        mapStatusUpdate = null;//缩小
        bt_center.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mapStatusUpdate = MapStatusUpdateFactory.zoomOut();
                baiduMap.setMapStatus(mapStatusUpdate);
            }
        });
//放大
        bt_left.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                mapStatusUpdate = MapStatusUpdateFactory.zoomIn();
                baiduMap.setMapStatus(mapStatusUpdate);
            }
        });
        bt_right.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                searchContent = et_search.getText().toString();
                //注册搜索附近对象
                PoiSearch poiSearch = PoiSearch.newInstance();
                poiSearch.setOnGetPoiSearchResultListener(new OnGetPoiSearchResultListener() {
                    @Override
                    public void onGetPoiResult(PoiResult result) {
                        if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {
                            Utils.showToast(getApplicationContext(), "没搜索到结果哦");
                        }
                        PoiOverlay poiOverlay = new PoiOverlay(baiduMap) {
                            @Override
                            public boolean onPoiClick(int i) {
                                PoiInfo poiInfo = getPoiResult().getAllPoi().get(i);
                                resultPosition = poiInfo.location;
                                Utils.showToast(getApplicationContext(), poiInfo.name + "," + poiInfo.address);
                                showTheWay();
                                return true;
                            }

                            private void showTheWay() {
                                routePlanSearch = RoutePlanSearch.newInstance();
                                routePlanSearch.setOnGetRoutePlanResultListener(new OnGetRoutePlanResultListener() {
                                    @Override
                                    public void onGetWalkingRouteResult(WalkingRouteResult result) {
                                        baiduMap.setOnMarkerClickListener(overlay);
                                        overlay.removeFromMap();
                                        List<WalkingRouteLine> routeLines = result.getRouteLines();
                                        overlay.setData(routeLines.get(0));
                                        overlay.addToMap();
                                        overlay.zoomToSpan();
                                    }
                                    @Override
                                    public void onGetTransitRouteResult(TransitRouteResult arg0) {
                                    }

                                    @Override
                                    public void onGetDrivingRouteResult(DrivingRouteResult result) {
                                    }
                                    @Override
                                    public void onGetBikingRouteResult(BikingRouteResult arg0) {
                                    }
                                });
                                routePlanSearch.walkingSearch(getSearchWayParams());

                            }
                        };
                        baiduMap.setOnMarkerClickListener(poiOverlay);
                        poiOverlay.setData(result);
                        poiOverlay.addToMap();
                        poiOverlay.zoomToSpan();
                    }

                    public void onGetPoiDetailResult(PoiDetailResult arg0) {
                    }
                    @Override
                    public void onGetPoiIndoorResult(PoiIndoorResult arg0) {
                    }
                });
                poiSearch.searchInBound(getSearchParams());
            }

        });
    }
    private WalkingRoutePlanOption getSearchWayParams(){
        WalkingRoutePlanOption params = new WalkingRoutePlanOption();
        LatLng hmPos = new LatLng(latitude,longitude);
        params.from(PlanNode.withLocation(hmPos));//设置起点
        params.to(PlanNode.withLocation(resultPosition));//设置终点
        return params;
    }

    private PoiBoundSearchOption getSearchParams(){
        PoiBoundSearchOption params = new PoiBoundSearchOption();
        LatLngBounds bounds = new LatLngBounds.Builder().include(new LatLng(latitude+0.00001,longitude+0.00001)).include(new LatLng(latitude-0.00001,longitude-0.00001)).build();
        params.bound(bounds);
        params.keyword(searchContent+"");
        return params;
    }

    private void setLocationConfig() {
        MyLocationConfiguration.LocationMode mode = MyLocationConfiguration.LocationMode.FOLLOWING;
        boolean enableDirection = true;
        MyLocationConfiguration config = new MyLocationConfiguration(mode, enableDirection, null);
        baiduMap.setMyLocationConfigeration(config);
    }
    @Override
    protected void onDestroy() {
        super.onDestroy();
        mLocationclient.stop();
    }
    public class MyLocationListener implements BDLocationListener {
        @Override
        public void onReceiveLocation(BDLocation location) {
//此处的BDLocation为定位结果信息类，通过它的各种get方法可获取定位相关的全部结果
            if (location != null) {
                MyLocationData.Builder builder = new MyLocationData.Builder();
                builder.accuracy(location.getRadius());
                builder.direction(location.getDirection());
                latitude = location.getLatitude();//获取纬度信息
                longitude = location.getLongitude();//获取经度信息
                builder.latitude(latitude);
                builder.longitude(longitude);
                MyLocationData locationData = builder.build();
                baiduMap.setMyLocationData(locationData);
            }
//Receive Location
            StringBuffer sb = new StringBuffer(256);
            sb.append("time:");
            sb.append(location.getTime());
            sb.append("\nerror code:");
            sb.append(location.getLocType());
            sb.append("\nlatitude:");
            sb.append(location.getLatitude());
            sb.append("\nlontitude:");
            sb.append(location.getLongitude());
            sb.append("\nradius:");
            sb.append(location.getRadius());
            if (location.getLocType() == BDLocation.TypeGpsLocation) {//GPS定位结果
                sb.append("\nspeed:");
                sb.append(location.getSpeed());//单位：公里每小时
                sb.append("\nsatellite:");
                sb.append(location.getSatelliteNumber());
                sb.append("\nheight:");
                sb.append(location.getAltitude());//单位：米
                sb.append("\ndirection:");
                sb.append(location.getDirection());//单位度
                sb.append("\naddr:");
                sb.append(location.getAddrStr());
                sb.append("\ndescribe:");
                sb.append("gps定位成功");
            } else if (location.getLocType() == BDLocation.TypeNetWorkLocation) {//网铬定位结果
                sb.append("\naddr:");
                sb.append(location.getAddrStr());
//运营商信息
                sb.append("\noperationers:");
                sb.append(location.getOperators());
                sb.append("\ndescribe:");
                sb.append("网络定位成功");
            } else if (location.getLocType() == BDLocation.TypeOffLineLocation) {//离线定位结果
                sb.append("\ndescribe:");
                sb.append("离线定位成功，离线定位结果也是有效的");
            } else if (location.getLocType() == BDLocation.TypeServerError) {
                sb.append("\ndescribe:");
                sb.append("服务端网络定位失败，可以反馈IMEI号和大体定位时间到[email protected],会有人追查原因");
            } else if (location.getLocType() == BDLocation.TypeNetWorkException) {
                sb.append("\ndescribe ");
                sb.append("网络不同导致定位失败，请检查网络是否通畅");
            } else if (location.getLocType() == BDLocation.TypeCriteriaException) {
                sb.append("\ndescribe ");
                sb.append("无法获取有效定位依据导致定位失败，一般是由于手机的原因，处于飞行模式下一般会造成这种结果，可以试着重启手机");
            }
            sb.append("\nlocationdescribe:");
            sb.append(location.getLocationDescribe());//位置语义化信息
            List<Poi> list = location.getPoiList();//POI
            if (list != null) {
                sb.append("\npoilist size =");
                sb.append(list.size());
                for (Poi p : list) {
                    sb.append("\npoi=:");
                    sb.append(p.getId() + " " + p.getName() + " " + p.getRank());
                }
            }
            Log.i("BaiduLocationApiDem", sb.toString());
        }
    }
    private void initLocation(){
        LocationClientOption option = new LocationClientOption();
        option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy);//可选，默认高精度，设置定位模式，高精度，低功耗，仅设备
        option.setCoorType("bd0911");//可选，默认gcj02,设置返回的定位结果坐标系
        int span=1000;
        option.setScanSpan(span);
        option.setIsNeedAddress(true);
        option.setOpenGps(true);
        option.setLocationNotify(true);
        option.setIsNeedLocationDescribe(true);
        option.setIsNeedLocationPoiList(true);
        option.setIgnoreKillProcess(false);
        option.SetIgnoreCacheException(false);
        option.setEnableSimulateGps(false);
        mLocationclient.setLocOption(option);

    }
}

运行中会遇到的问题就是密钥的问题，

首先我们需要给他加入权限