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

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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 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 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"/>

<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

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