google map 的使用

今天看了一些视频，学习的google map下面是一些总结
1生成密钥
步骤：首先获得密钥打开eclipse>window>preference>android>builde
然后打开cmd
进入下面的路劲


敲入


获得md5码

进入google网站注册，把你的md5码填进去
https://developers.google.com/maps/documentation/android/maps-api-signup
生产的key用记事本记起来
在xml文件中，引入 <com.google.android.maps.MapView
                 android:layout_width="fill_parent"
                 android:layout_height="fill_parent"
                 android:apiKey="0oSMQIkVrCH2-x7f7MiHuQJUNXQ8H9m0pPUzQ6Q"
                 />
在主activity extends MapActivity
在AndroidManifest.xml中加上<uses-permission android:name="android.permission.INTERNET"/>
在application节点下，加入 <uses-library android:name="com.google.android.maps"/>
下面的代码是实现地图的定位，街景，交通地图，卫星地图切换
package com.googlemap.activity;

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 android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;

public class MainActivity extends MapActivity {
private MapView mapview;
private MapController control;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mapview=(MapView) this.findViewById(R.id.mapview);
        control=mapview.getController();
        mapview.setClickable(true);
        mapview.setTraffic(true);
       mapview.setBuiltInZoomControls(true);
       control.setZoom(10);
        mapview.setLongClickable(true);
     
    }

@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(1, 1, 1, "交通地图");
menu.add(2, 2, 2, "卫星地图");
menu.add(3,3,3,"街景模式");

return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case 1:
mapview.setTraffic(true);
mapview.setSatellite(false);
mapview.setStreetView(false);
break;
case 2:
mapview.setTraffic(false);
mapview.setSatellite(true);
mapview.setStreetView(false);
break;
case 3:
mapview.setTraffic(false);
mapview.setSatellite(false);
mapview.setStreetView(true);

default:
break;
}
return super.onOptionsItemSelected(item);
}

@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
public void UpdataMapshow(Double lat,Double lng){
int latI=(int) (lat*1E6);
int lngI=(int) (lng*1E6);

GeoPoint point=new GeoPoint(latI, lngI);
control.setCenter(point);
control.setZoom(mapview.getZoomLevel()-1);
control.animateTo(point);
}

}
main.xml:
<?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" >

    <com.google.android.maps.MapView
        android:id="@+id/mapview"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:apiKey="0oSMQIkVrCH2-x7f7MiHuQJUNXQ8H9m0pPUzQ6Q" />

</LinearLayout>