android google地图定位开发，且可以自由移动位置重新获取定位，地址信息
一：申请key:
1.首先找到debug keystore位置：
打开Eclipse--->Windows--->Preferences--->Android--->Build
一般是这样的路径 C:\Documents and Settings\Administrator\.android\debug.keystore
2.在cmd中执行
keytool -list -alias androiddebugkey -keystore "C:\Documents and Settings\Administrator\.android\debug.keystore" -storepass android -keypass android
得到认证指纹 (MD5)如：6F:C9:41:48:A5:F3:36:A5:D3:DD:B5:D1:CB:AC:47:88
3.打开申请key页面 http://code.google.com/android/maps-api-signup.html
复制 认证指纹 (MD5)：到下面的 My certificate's MD5 fingerprint
4.然后点击 Generate Api key
5.等到apikey:0Mg_koWoyZUhlluO4-i6-bq9WYMFbxKodZZMz2Q
二：设计main.xml如下：（将申请到得key设置在com.google.android.maps.MapView 中如下所示）
<?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" >
<com.google.android.maps.MapView
android:id="@+id/map_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:apiKey="0Mg_koWoyZUhlluO4-i6-bq9WYMFbxKodZZMz2Q"
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" >
<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" >
<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MyLocationManager类主要用于管理经纬度获取方法实现
package com.android.map;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
public class MyLocationManager {
private final String TAG = "FzLocationManager";
private static Context mContext;
private LocationManager gpsLocationManager;
private LocationManager networkLocationManager;
private static final int MINTIME = 2000;
private static final int MININSTANCE = 2;
private static MyLocationManager instance;
private Location lastLocation = null;
private static LocationCallBack mCallback;
public static void init(Context c , LocationCallBack callback) {
mContext = c;
mCallback = callback;
}
private MyLocationManager() {
// Gps 定位
gpsLocationManager = (LocationManager) mContext
.getSystemService(Context.LOCATION_SERVICE);
Location gpsLocation = gpsLocationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
gpsLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
MINTIME, MININSTANCE, locationListener);
// 基站定位
networkLocationManager = (LocationManager) mContext
.getSystemService(Context.LOCATION_SERVICE);
Location networkLocation = gpsLocationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
networkLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, MINTIME, MININSTANCE,
locationListener);
}
public static MyLocationManager getInstance() {
if (null == instance) {
instance = new MyLocationManager();
}
return instance;
}
private void updateLocation(Location location) {
lastLocation = location;
mCallback.onCurrentLocation(location);
}
private final LocationListener locationListener = new LocationListener() {
public void onStatusChanged(String provider, int status, Bundle extras) {
}
public void onProviderEnabled(String provider) {
}
public void onProviderDisabled(String provider) {
}
public void onLocationChanged(Location location) {
Log.d(TAG, "onLocationChanged");
updateLocation(location);
}
};
public Location getMyLocation() {
return lastLocation;
}
private static int ENOUGH_LONG = 1000 * 60;
public interface LocationCallBack{
/**
* 当前位置
* @param location
*/
void onCurrentLocation(Location location);
}
public void destoryLocationManager(){
Log.d(TAG, "destoryLocationManager");
gpsLocationManager.removeUpdates(locationListener);
networkLocationManager.removeUpdates(locationListener);
}
}
四：创建MyMapOverlay抽象类，并继承Overlay，创建抽象方法
changePoint(GeoPoint newPoint,int type)用于回调重新获取到的GeoPoint 重新定位地图，并获取地址信息
import android.view.MotionEvent;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapView;
import com.google.android.maps.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;
//触控屏幕移动地图，重新根据屏幕中心点获取该点经纬度
@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);
}
五：MyMapActivity 继承MapActivity类并实现经纬度获取回调接口LocationCallBack 。项目实现如下：
package com.android.googlemap;
import java.io.IOException;
import java.util.List;
import java.util.Locale;
import android.graphics.Rect;
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.MyLocationManager;
import com.android.map.MyLocationManager.LocationCallBack;
import com.android.map.MyMapOverlay;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.Overlay;
public class MyMapActivity extends MapActivity implements LocationCallBack {
private MapView mapView;
private MapController mMapCtrl;
private MyLocationManager myLocation;
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;
private int statusBarHeight;
public final int MSG_VIEW_LONGPRESS = 10001;
public final int MSG_VIEW_ADDRESSNAME = 10002;
public final int MSG_GONE_ADDRESSNAME = 10003;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
mapView = (MapView) findViewById(R.id.map_view);
desText = (TextView) this.findViewById(R.id.map_bubbleText);
lost_tips = getResources().getString(R.string.load_tips);
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(12);
MyLocationManager.init(MyMapActivity.this.getApplicationContext(),
MyMapActivity.this);
myLocation = MyLocationManager.getInstance();
}
@Override
protected void onResume() {
super.onResume();
}
@Override
protected void onPause() {
super.onPause();
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
public void onCurrentLocation(Location location) {
if (locPoint == null) {
locPoint = new GeoPoint((int) (location.getLatitude() * 1E6),
(int) (location.getLongitude() * 1E6));
mHandler.sendEmptyMessage(MSG_VIEW_LONGPRESS);
}
}
public void changePoint(GeoPoint locPoint) {
}
/**
* 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;
}
/**
*
* 用线程异步获取
*/
Runnable getAddressName = new Runnable() {
public void run() {
String addressName = "";
while (true) {
addressName = getLocationAddress(locPoint);
if (!"".equals(addressName)) {
break;
}
}
Message msg = new Message();
msg.what = MSG_VIEW_ADDRESSNAME;
msg.obj = addressName;
mHandler.sendMessage(msg);
}
};
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;
new Thread(getAddressName).start();
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);
if (statusBarHeight == 0) {
Rect frame = new Rect();
getWindow().getDecorView().getWindowVisibleDisplayFrame(
frame);
statusBarHeight = frame.top;
point_Y -= statusBarHeight / 2;
}
break;
case MSG_GONE_ADDRESSNAME:
desText.setVisibility(View.GONE);
break;
}
}
};
// 关闭程序也关闭定位
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
myLocation.destoryLocationManager();
}
}
六：在AndroidManifest.xml中不要忘了要添加访问网络和启动定位等的几个权限已经google地图库
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<!--在application里面添加google地图库如下（一定要记得添加）：-->
<application android:icon="@drawable/icon" android:label="@string/app_name">
<uses-library android:name="com.google.android.maps" />
<activity android:name="com.android.googlemap.MyMapActivity" android:screenOrientation="portrait"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
七：运行效果：
1
2以后后重新获取如下：
提示：如果没有出现地图只出现地址信息背景是网格的，那就是key的问题，根据开始的方法找到自己开发的eclipse中sdk的debug keystore位置重新申请key即可