1.安装****Google Play services SDK
Google Maps SDK已经作为Google Play services SDK的一部分，所以首先要安装Google Play services SDK，Eclipse->android sdk manager->Extra文件夹下选中google play service安装

2.将Google Play services 作为library工程导入
(1) File > Import > Android > Existing Android Code Into Workspace and click Next.(2)Browse..., enter /extras/google/google_play_services/libproject/google-play-services_lib, and click Finish.
(3)右击工程文件选择properties->Android->拖动滚动条向下直到看到is Library选择

3.导入官网的maps例子工程
(1)File > Import > Android > Existing Android Code Into Workspace and click **Next
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**(2)Browse..., enter /extras/google/google_play_services/samples/maps, and click Finish.
(3)Project > Properties, select Java Build Path, and navigate to Libraries.
(4)Select Add External Jars, include the following jar files, and click OK: + /extras/android/compatibility/v4/android-support-v4.jar
(5)在AndroidManifest.xml文件中添加你自己的 Google Maps Android API key.
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<meta-data     android:name="com.google.android.maps.v2.API_KEY"     android:value="API_KEY"/>

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(6)Run > Run to test the sample app.**