android mapView

1.Because the Maps library is not a part of the standard Android library, you must declare it in the Android Manifest as a child of the element: 

2.You also need access to the Internet in order to retrieve map tiles, so you must also add the following as a child of the element: 

 

3.Open the res/layout/main.xml file and add a single MapView as the root node: 

<xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/mapview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:clickable="true"
    android:apiKey="Your Maps API Key goes here"
/>

4.获取apiKey：

4.1打开Eclipse，选择Windows->Preference->Android->Build，这里便是你debug.keystore的路径

4.2在cmd中键入

cd debug.keystore的路径

keytool -list -keystore debug.keystore

获得MD5编码 

4.3去http://code.google.com/android/maps-api-signup.html 输入MD5编码，得到由google签署的Adroid Maps API key