Google Map API

1.首先找到debug keystore路径:

打开Eclipse—>Windows—>Preferences—>Android—>Build, 一般是这样的路径 C:\Users\Administrator\.android\debug.keystore

2、在cmd执行命令获取认证指纹 (MD5):

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Ava>keytool -list -alias androiddebugkey -keystore "C:\Users\Ava\.andro
id\debug.keystore" -storepass android -keypass android
androiddebugkey, 03-Jul-2012, PrivateKeyEntry,
Certificate fingerprint (MD5): 15:D4:A6:05:4D:CE:9F:A3:D6:A3:51:31:BC:5D:D1:9C

3. 获得key需要一个google账号:

https://developers.google.com/maps/documentation/android/maps-api-signup

Your key is:

0OSF67gdTwVdrKOMErmwc4yVFUzC_vFQKkzcwCg

This key will work for all apps signed with your certificate whose fingerprint is:

AF:95:79:AB:D8:11:2A:09:D5:AB:87:76:BD:92:8E:C8

Here is a sample xml layout to get you started on your way to mapping glory:

              <com.google.android.maps.MapView
                 android:layout_width="fill_parent"
                 android:layout_height="fill_parent"
                 android:apiKey="0OSF67gdTwVdrKOMErmwc4yVFUzC_vFQKkzcwCg"
                 />
4. 在android的布局文件里,直接使用上面的示例,就可以使用google map 组件了。
5. 在AndroidManifest.xml中将
<uses-library Android:name="com.google.android.maps" />
放在<application>里面,下面两行可选放activity之后:
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
6. mapTest.java

public class mapTest extends MapActivity {
/** Called when the activity is first created. */
private MapView myMapView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_opcv);}

?why still blank screen?为什么是空白地图?

  1. 没有使用自己的map api key
  2. 未设置地图中心和缩放级别(一般为10比较好):

map.getController().setCenter(new GeoPoint(39971036,116314659));//设置地图中心
map.getController().setZoom(10);//设置缩放级别

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