android 基于百度地图api开发定位以及获取详细地址

一：百度地图开发必须要到百度开发平台android开发api下载相应的库，已经申请百度地图开发key.

二：新建项目baidumaplocation.设计main.xml文件这里注意的是MapView控件必须使用来自百度库封装好的com.baidu.mapapi.MapView 。设计代码如下：

Xml代码


<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical" >

<FrameLayout

android:id="@+id/map_layout"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical" >

<!-- 百度MapView控件 -->

<com.baidu.mapapi.MapView

android:id="@+id/map_view"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:apiKey="0Mg_koWoyZUiYLfZxmPfp4LKInB5LqTnagYueaw"

android:clickable="true"

android:enabled="true" />

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center"

android:orientation="vertical"

android:paddingBottom="105dip" >

<!-- 地址信息显示TextView -->

<TextView

android:id="@+id/map_bubbleText"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:background="@drawable/location_tips"

android:gravity="left|center"

android:maxEms="12"

android:paddingLeft="12dip"

android:paddingRight="10dip"

android:text="@string/load_tips"

android:textColor="#cfcfcf"

android:textSize="14sp" />

</LinearLayout>

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center"

android:orientation="vertical" >

<!-- 位置指标显示ImageView -->

<ImageView

android:id="@+id/point_image"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center"

android:layout_marginBottom="30dip"

android:src="@drawable/point_start" />

</LinearLayout>

</FrameLayout>

</LinearLayout>

三：创建覆盖整个地图捕捉触控事件的MyMapOverlay继承Overlay

Java代码


import android.view.MotionEvent;

import com.baidu.mapapi.GeoPoint;

import com.baidu.mapapi.MapView;

import com.baidu.mapapi.Overlay;

//覆盖整个地图捕捉触控事件的OverLay

public abstract class MyMapOverlay extends Overlay{

private int point_X;

private int point_Y;

private GeoPoint newPoint;

public MyMapOverlay(int x,int y){

point_X = x;

point_Y = y;

}

boolean flagMove=false;

//这里实现根据地图移动时重新获取屏幕中心点的经纬度坐标

@Override

public boolean onTouchEvent(MotionEvent event, MapView mapView) {

System.out.println("X->"+event.getX()+":"+point_X);

System.out.println("Y->"+event.getY()+":"+point_Y);

if(event.getAction() == MotionEvent.ACTION_DOWN){

changePoint(newPoint,1);

}else if(event.getAction() == MotionEvent.ACTION_UP){

newPoint = mapView.getProjection().fromPixels(point_X,point_Y);

changePoint(newPoint,2);

}

return false;

}

public abstract void changePoint(GeoPoint newPoint,int type);

}

四：LocationActivity类继承百度库的MapActivity以及实现LocationListener接口，代码如下：

package com.location.activity;

Java代码


import java.io.IOException;

import java.util.List;

import java.util.Locale;

import android.content.Intent;

import android.location.Address;

import android.location.Geocoder;

import android.location.Location;

import android.os.Bundle;

import android.os.Handler;

import android.os.Message;

import android.view.View;

import android.view.Window;

import android.widget.TextView;

import com.android.map.MyMapOverlay;

import com.baidu.mapapi.BMapManager;

import com.baidu.mapapi.GeoPoint;

import com.baidu.mapapi.LocationListener;

import com.baidu.mapapi.MKAddrInfo;

import com.baidu.mapapi.MKBusLineResult;

import com.baidu.mapapi.MKDrivingRouteResult;

import com.baidu.mapapi.MKLocationManager;

import com.baidu.mapapi.MKPoiResult;

import com.baidu.mapapi.MKSearch;

import com.baidu.mapapi.MKSearchListener;

import com.baidu.mapapi.MKSuggestionResult;

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 com.baidu.mapapi.Overlay;

public class LocationActivity extends MapActivity implements LocationListener {

private MapView mapView;

private MapController mMapCtrl;

private List<Overlay> mapOverlays;

public GeoPoint locPoint;

private MyMapOverlay mOverlay;

private TextView desText;

private String lost_tips;

private int point_X;

private int point_Y;

public final int MSG_VIEW_LONGPRESS = 10001;

public final int MSG_VIEW_ADDRESSNAME = 10002;

public final int MSG_GONE_ADDRESSNAME = 10003;

private Intent mIntent;

private int mLatitude;

private int mLongitude;

private String name;

private BMapManager mapManager;

private MKLocationManager mLocationManager = null;

private boolean isLoadAdrr = true;

private MKSearch mMKSearch;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

setContentView(R.layout.main);

initMap();

mIntent = getIntent();

mLatitude = mIntent.getIntExtra("latitude", 0);

mLongitude = mIntent.getIntExtra("longitude", 0);

name = mIntent.getStringExtra("name");

mapView = (MapView) findViewById(R.id.map_view);

desText = (TextView) this.findViewById(R.id.map_bubbleText);

lost_tips = getResources().getString(R.string.load_tips);

if (mLatitude != 0 && mLongitude != 0) {

locPoint = new GeoPoint((int) (mLatitude * 1E6),

(int) (mLongitude * 1E6));

desText.setText(name);

}

mapView.setBuiltInZoomControls(true);

mapView.setClickable(true);

mMapCtrl = mapView.getController();

point_X = this.getWindowManager().getDefaultDisplay().getWidth() / 2;

point_Y = this.getWindowManager().getDefaultDisplay().getHeight() / 2;

mOverlay = new MyMapOverlay(point_X, point_Y) {

@Override

public void changePoint(GeoPoint newPoint, int type) {

if (type == 1) {

mHandler.sendEmptyMessage(MSG_GONE_ADDRESSNAME);

} else {

locPoint = newPoint;

mHandler.sendEmptyMessage(MSG_VIEW_LONGPRESS);

}

}

};

mapOverlays = mapView.getOverlays();

if (mapOverlays.size() > 0) {

mapOverlays.clear();

}

mapOverlays.add(mOverlay);

mMapCtrl.setZoom(20);

}

private void initMap() {

// 初始化MapActivity

mapManager = new BMapManager(getApplication());

// init方法的第一个参数需填入申请的API Key

mapManager.init("C66C0501D0280744759A6957C42543AE38F5D540", null);

super.initMapActivity(mapManager);

// 实例化搜索地址类

mMKSearch = new MKSearch();

// 初始化搜索地址实例

mMKSearch.init(mapManager, new MySearchListener());

mLocationManager = mapManager.getLocationManager();

// 注册位置更新事件

mLocationManager.requestLocationUpdates(this);

// 使用GPS定位

mLocationManager

.enableProvider((int) MKLocationManager.MK_GPS_PROVIDER);

}

@Override

protected void onResume() {

if (mapManager != null) {

mapManager.start();

}

super.onResume();

}

@Override

protected void onPause() {

isLoadAdrr = false;

if (mapManager != null) {

mapManager.stop();

}

super.onPause();

}

@Override

protected boolean isRouteDisplayed() {

// TODO Auto-generated method stub

return false;

}

/**

* 通过经纬度获取地址

*

* @param point

* @return

*/

private String getLocationAddress(GeoPoint point) {

String add = "";

Geocoder geoCoder = new Geocoder(getBaseContext(), Locale.getDefault());

try {

List<Address> addresses = geoCoder.getFromLocation(

point.getLatitudeE6() / 1E6, point.getLongitudeE6() / 1E6,

1);

Address address = addresses.get(0);

int maxLine = address.getMaxAddressLineIndex();

if (maxLine >= 2) {

add = address.getAddressLine(1) + address.getAddressLine(2);

} else {

add = address.getAddressLine(1);

}

} catch (IOException e) {

add = "";

e.printStackTrace();

}

return add;

}

private Handler mHandler = new Handler() {

@Override

public void handleMessage(Message msg) {

switch (msg.what) {

case MSG_VIEW_LONGPRESS:// 处理长按时间返回位置信息

{

if (null == locPoint)

return;

mMKSearch.reverseGeocode(locPoint);

desText.setVisibility(View.VISIBLE);

desText.setText(lost_tips);

mMapCtrl.animateTo(locPoint);

mapView.invalidate();

}

break;

case MSG_VIEW_ADDRESSNAME:

desText.setText((String) msg.obj);

desText.setVisibility(View.VISIBLE);

break;

case MSG_GONE_ADDRESSNAME:

desText.setVisibility(View.GONE);

break;

}

}

};

// 关闭程序也关闭定位

@Override

protected void onDestroy() {

if (mapManager != null) {

mapManager.destroy();

mapManager = null;

}

super.onDestroy();

}

/**

* 根据MyLocationOverlay配置的属性确定是否在地图上显示当前位置

*/

@Override

protected boolean isLocationDisplayed() {

return false;

}

/**

* 当位置发生变化时触发此方法

*

* @param location

* 当前位置

*/

public void onLocationChanged(Location location) {

if (location != null) {

locPoint = new GeoPoint((int) (location.getLatitude()* 1E6),

(int) (location.getLongitude()* 1E6));

mHandler.sendEmptyMessage(MSG_VIEW_LONGPRESS);

}

}

/**

* 内部类实现MKSearchListener接口,用于实现异步搜索服务

*

* @author liufeng

*/

public class MySearchListener implements MKSearchListener {

/**

* 根据经纬度搜索地址信息结果

*

* @param result

* 搜索结果

* @param iError

* 错误号（0表示正确返回）

*/

public void onGetAddrResult(MKAddrInfo result, int iError) {

if (result == null) {

return;

}

Message msg = new Message();

msg.what = MSG_VIEW_ADDRESSNAME;

msg.obj = result.strAddr;

mHandler.sendMessage(msg);

}

/**

* 驾车路线搜索结果

*

* @param result

* 搜索结果

* @param iError

* 错误号（0表示正确返回）

*/

public void onGetDrivingRouteResult(MKDrivingRouteResult result,

int iError) {

}

/**

* POI搜索结果（范围检索、城市POI检索、周边检索）

*

* @param result

* 搜索结果

* @param type

* 返回结果类型（11,12,21:poi列表 7:城市列表）

* @param iError

* 错误号（0表示正确返回）

*/

public void onGetPoiResult(MKPoiResult result, int type, int iError) {

}

/**

* 公交换乘路线搜索结果

*

* @param result

* 搜索结果

* @param iError

* 错误号（0表示正确返回）

*/

public void onGetTransitRouteResult(MKTransitRouteResult result,

int iError) {

}

/**

* 步行路线搜索结果

*

* @param result

* 搜索结果

* @param iError

* 错误号（0表示正确返回）

*/

public void onGetWalkingRouteResult(MKWalkingRouteResult result,

int iError) {

}

public void onGetBusDetailResult(MKBusLineResult arg0, int arg1) {

// TODO Auto-generated method stub

}

public void onGetSuggestionResult(MKSuggestionResult arg0, int arg1) {

// TODO Auto-generated method stub

}

}

}

五：在AndroidManifest.xml住添加相关的访问权限

<!-- 访问网络的权限 -->

Xml代码


<uses-permission android:name="android.permission.INTERNET" />

<!-- 访问精确位置的权限 -->

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

<!-- 访问网络状态的权限 -->

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<!-- 访问WIFI网络状态的权限 -->

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

<!-- 改变WIFI网络状态的权限 -->

<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />

<!-- 读写存储卡的权限 -->

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

<!-- 读取电话状态的权限 -->

<uses-permission android:name="android.permission.READ_PHONE_STATE" />

六：运行结果如下图：