一个百度定位例子，把自己的经纬度转换为具体位置

package com.xmb.BaiduMap;

import com.baidu.mapapi.BMapManager;
import com.baidu.mapapi.GeoPoint;
import com.baidu.mapapi.LocationListener;
import com.baidu.mapapi.MKAddrInfo;
import com.baidu.mapapi.*;
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.MKTransitRouteResult;
import com.baidu.mapapi.MKWalkingRouteResult;
import com.baidu.mapapi.MapActivity;
import com.baidu.mapapi.MapController;
import com.baidu.mapapi.MapView;

import android.app.Activity;
import android.graphics.drawable.Drawable;
import android.location.Location;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;

public class BaiduMap extends Activity {
public TextView tv1, tv2;
public BMapManager mapManager;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mylocation);
tv1=(TextView)findViewById(R.id.result1);
tv2 = (TextView) this.findViewById(R.id.result2);

mapManager=new BMapManager(this);

mapManager.init("53351EE4BDE7BD870F41A0B4AF1480F1CA97DAF9", new MyMKGeneralListener());

mapManager.getLocationManager().setNoitifyInternal(20, 5);

mapManager.getLocationManager().requestLocationUpdates(new MyLocationListener());

mapManager.start();

//      mapManager = new BMapManager(this);
//        mapManager.init("EDB67AD764D300895C95ABA02A4DDC58D5485CCD",
//                new MyMKGeneralListener());
//        // 设置通知间隔:iMaxSecond - 最大通知间隔,单位:秒;iMinSecond - 最小通知间隔,单位:秒
//        mapManager.getLocationManager().setNotifyInternal(20, 5);
//
//        mapManager.getLocationManager().requestLocationUpdates(
//                new MyLocationListener());
//        mapManager.start();

}
// 定位自己的位置，只定位一次
class MyLocationListener implements LocationListener {

@Override
public void onLocationChanged(Location arg0) {

double jindu1 = arg0.getLatitude();
double weidu1 = arg0.getLongitude();

int jindu = (int) (arg0.getLatitude()*1000000);
int weidu = (int) (arg0.getLongitude()*1000000);
tv1.setText("经度：" + jindu1 + ",纬度：" + weidu1);
System.out.println("经度：" + jindu1 + ",纬度：" + weidu1);
MKSearch search = new MKSearch();
search.init(mapManager, new MyMKSearchListener());
search.reverseGeocode(new GeoPoint(jindu, weidu));
}

}

class MyMKSearchListener implements MKSearchListener {

@Override
public void onGetAddrResult(MKAddrInfo arg0, int arg1) {
if (arg0 == null) {
tv2.setText("没有获取想要的位置");
} else {
GeoPoint point = arg0.geoPt;
tv2.setText("地址：" + arg0.strAddr + ",坐标："
+ point.getLatitudeE6() + "," + point.getLongitudeE6());
}
}

@Override
public void onGetDrivingRouteResult(MKDrivingRouteResult arg0, int arg1) {
// TODO Auto-generated method stub

}

@Override
public void onGetPoiResult(MKPoiResult arg0, int arg1, int arg2) {
// 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

}

}

// 常用事件监听，用来处理通常的网络错误，授权验证错误等
class MyMKGeneralListener implements MKGeneralListener {

@Override
public void onGetNetworkState(int arg0) {

}

@Override
public void onGetPermissionState(int arg0) {

}

}
}

package com.xmb.BaiduMap;

import android.app.Application;
import android.widget.Toast;

import com.baidu.mapapi.*;

public class BMapApiDemoApp extends Application {

static BMapApiDemoApp mDemoApp;

//百度MapAPI的管理类
BMapManager mBMapMan = null;
// 授权Key
// TODO: 请输入您的Key,
// 申请地址：http://dev.baidu.com/wiki/static/imap/key/
String mStrKey = "53351EE4BDE7BD870F41A0B4AF1480F1CA97DAF9";
boolean m_bKeyRight = true;    // 授权Key正确，验证通过

// 常用事件监听，用来处理通常的网络错误，授权验证错误等
static class MyGeneralListener implements MKGeneralListener {
@Override
public void onGetNetworkState(int iError) {
Toast.makeText(BMapApiDemoApp.mDemoApp.getApplicationContext(), "您的网络出错啦！",
Toast.LENGTH_LONG).show();
}

@Override
public void onGetPermissionState(int iError) {
if (iError ==  MKEvent.ERROR_PERMISSION_DENIED) {
// 授权Key错误：
Toast.makeText(BMapApiDemoApp.mDemoApp.getApplicationContext(),
"请在BMapApiDemoApp.java文件输入正确的授权Key！",
Toast.LENGTH_LONG).show();
BMapApiDemoApp.mDemoApp.m_bKeyRight = false;
}
}
}
@Override
public void onCreate() {
mDemoApp = this;
mBMapMan = new BMapManager(this);
mBMapMan.init(this.mStrKey, new MyGeneralListener());
super.onCreate();
}
@Override
//建议在您app的退出之前调用mapadpi的destroy()函数，避免重复初始化带来的时间消耗
public void onTerminate() {
// TODO Auto-generated method stub
if (mBMapMan != null) {
mBMapMan.destroy();
mBMapMan = null;
}
super.onTerminate();
}

}