使用百度地图的API进行定位,因为V3.0版本之后很多类如MapController等不再使用,因此百度将定位API分离使用,下面是定位的Demo。使用的是百度最新的定位API。
1.首先调用SDKInitializer对API进行初始化,一定在setContentView之前完成。
//在使用SDK各组件之前初始化context信息,传入ApplicationContext
//注意该方法要再setContentView方法之前实现
SDKInitializer.initialize(getApplicationContext()); setContentView(R.layout.activity_main);
2.初始化地图实例并进行定位器的判断和设置。
//得到地图实例
mMapView = (MapView) findViewById(R.id.bmapView);
baiduMap = mMapView.getMap();
//将BaiduMap的setMyLocationEnabled设置为True
baiduMap.setMyLocationEnabled(true);
// 设置地图放大缩小参数
MapStatusUpdate msu = MapStatusUpdateFactory.zoomTo(15.0f);
baiduMap.setMapStatus(msu);
//使用LocationManager判断可以使用的定位方式
locationManager=(LocationManager) getSystemService(Context.LOCATION_SERVICE);
List<String> providerList= locationManager.getProviders(true);
if(providerList.contains(LocationManager.GPS_PROVIDER)){
provider=LocationManager.GPS_PROVIDER;
}else if(providerList.contains(LocationManager.NETWORK_PROVIDER)){
provider=LocationManager.NETWORK_PROVIDER;
} else{
Toast.makeText(this, "No location Provider to use", Toast.LENGTH_SHORT).show();
return;
}
3.创建LocationClient实例并进行注册监听器,设置LocationClientOption
//创建LocationClient实例
locationClient= new LocationClient(this);
mbdLocationListener= new MbdLocationListener();
//注册监听器,定位成功后回调 locationClient.registerLocationListener(mbdLocationListener);
//初始化
setLocationOption();
//启动LocationClient开始定位,定位结果返回在监听器的onReceiveLocation中
locationClient.start();
public void setLocationOption(){
LocationClientOption option = new LocationClientOption();
option.setCoorType("gcj02");// 返回的定位结果是百度经纬度,默认值gcj02
option.setIsNeedAddress(true);// 位置,一定要设置,否则后面得不到地址
option.setOpenGps(true);// 打开GPS
option.setScanSpan(5000);// 多长时间进行一次请求 option.setLocationMode(LocationMode.Hight_Accuracy);// 高精度
locationClient.setLocOption(option);// 使用设置
}
4.实现接口类BDLocationListener,location为定位返回的结果,将结果进行显示。
private class MbdLocationListener implements BDLocationListener{
@Override
public void onReceiveLocation(BDLocation location){
//创建MyLocationData类
MyLocationData locationdata= new MyLocationData.Builder()
.accuracy(location.getRadius())
.latitude(location.getLatitude())
.longitude(location.getLongitude())
.build();
//在BaiduMap中设置
baiduMap.setMyLocationData(locationdata);
mLatitude=location.getLatitude();
mLongitude=location.getLongitude();
//判断是否第一次定位,如果是执行如下代码
if(isFirstIn){
LatLng latLng =new LatLng(mLatitude,mLongitude);
MapStatusUpdate msu= MapStatusUpdateFactory.newLatLng(latLng);
baiduMap.animateMapStatus(msu);
isFirstIn=false;
Toast.makeText(
context,
"地址是:"+ location.getAddrStr()+"\n"
+"定位精度是:"+location.getRadius()+"\n"
,Toast.LENGTH_LONG).show();
Log.e("Address", String.valueOf(location.getCity()));
Log.e("District", String.valueOf(location.getAddrStr()));
Log.e("Location", String.valueOf(location));
}
}
以下是layout文件:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
tools:context="com.example.baidumapdemo.MainActivity"
tools:ignore="MergeRootFrame" >
<com.baidu.mapapi.map.MapView
android:id="@+id/bmapView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true" />
</LinearLayout>
下面是MainActivity
package com.example.baidumapdemo;
import java.util.List;
import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.location.LocationClientOption.LocationMode;
import com.baidu.mapapi.SDKInitializer;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.MapStatusUpdate;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.model.LatLng;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.content.Context;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.Toast;
import android.os.Build;
public class MainActivity extends ActionBarActivity {
private MapView mMapView;
private LocationManager locationManager;
private String provider;
private LocationClient locationClient;
private BDLocation bdLocation;
private MbdLocationListener mbdLocationListener;
private boolean isFirstIn = true;
private double mLatitude;//纬度
private double mLongitude;//经度
private BaiduMap baiduMap;
private Context context;
private LocationManager locationManger;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
//在使用SDK各组件之前初始化context信息,传入ApplicationContext
//注意该方法要再setContentView方法之前实现
SDKInitializer.initialize(getApplicationContext());
setContentView(R.layout.activity_main);
this.context = this;
initMapView();
initLocation();
}
public void initMapView(){
//得到地图实例
mMapView = (MapView) findViewById(R.id.bmapView);
baiduMap = mMapView.getMap();
//将BaiduMap的setMyLocationEnabled设置为True
baiduMap.setMyLocationEnabled(true);
// 设置地图放大缩小参数
MapStatusUpdate msu = MapStatusUpdateFactory.zoomTo(15.0f);
baiduMap.setMapStatus(msu);
//使用LocationManager判断可以使用的定位方式
locationManager=(LocationManager) getSystemService(Context.LOCATION_SERVICE);
List<String> providerList= locationManager.getProviders(true);
if(providerList.contains(LocationManager.GPS_PROVIDER)){
provider=LocationManager.GPS_PROVIDER;
}else if(providerList.contains(LocationManager.NETWORK_PROVIDER)){
provider=LocationManager.NETWORK_PROVIDER;
} else{
Toast.makeText(this, "No location Provider to use", Toast.LENGTH_SHORT).show();
return;
}
}
public void initLocation(){
//创建LocationClient实例
locationClient= new LocationClient(this);
mbdLocationListener= new MbdLocationListener();
//注册监听器,定位成功后回调
locationClient.registerLocationListener(mbdLocationListener);
//初始化
setLocationOption();
//启动LocationClient开始定位,定位结果返回在监听器的onReceiveLocation中
locationClient.start();
}
public void setLocationOption(){
LocationClientOption option = new LocationClientOption();
option.setCoorType("gcj02");// 返回的定位结果是百度经纬度,默认值gcj02
option.setIsNeedAddress(true);// 位置,一定要设置,否则后面得不到地址
option.setOpenGps(true);// 打开GPS
option.setScanSpan(5000);// 多长时间进行一次请求
option.setLocationMode(LocationMode.Hight_Accuracy);// 高精度
locationClient.setLocOption(option);// 使用设置
}
private class MbdLocationListener implements BDLocationListener{
@Override
public void onReceiveLocation(BDLocation location){
//创建MyLocationData类
MyLocationData locationdata= new MyLocationData.Builder()
.accuracy(location.getRadius())
.latitude(location.getLatitude())
.longitude(location.getLongitude())
.build();
//在BaiduMap中设置
baiduMap.setMyLocationData(locationdata);
mLatitude=location.getLatitude();
mLongitude=location.getLongitude();
//判断是否第一次定位,如果是执行如下代码
if(isFirstIn){
LatLng latLng =new LatLng(mLatitude,mLongitude);
MapStatusUpdate msu= MapStatusUpdateFactory.newLatLng(latLng);
baiduMap.animateMapStatus(msu);
isFirstIn=false;
Toast.makeText(
context,
"地址是:"+ location.getAddrStr()+"\n"
+"定位精度是:"+location.getRadius()+"\n"
,Toast.LENGTH_LONG).show();
Log.e("Address", String.valueOf(location.getCity()));
Log.e("District", String.valueOf(location.getAddrStr()));
Log.e("Location", String.valueOf(location));
}
}
}
@Override
protected void onResume() {
super.onResume();
//在activity执行onResume时执行mMapView. onResume (),实现地图生命周期管理
mMapView.onResume();
}
@Override
protected void onPause() {
super.onPause();
//在activity执行onPause时执行mMapView. onPause (),实现地图生命周期管理
mMapView.onPause();
}
@Override
protected void onDestroy() {
super.onDestroy();
//在activity执行onDestroy时执行mMapView.onDestroy(),实现地图生命周期管理
mMapView.onDestroy();
//反注册监听器
locationClient.unRegisterLocationListener(mbdLocationListener);
}
@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
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}