how to use BaiduMap in android studio under ubuntu

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1. get the key
    1) the address : />     2) and the help view :http://developer.baidu.com/map/index.php?title=androidsdk/guide/key
    3) 安全码组成：数字签名+;+包名。
        (1)get the digital signature
            cd into your .android dir for mine: "cd ~/.android"
            and the use the command : keytool -list -v -keystore ./debug.keystore
            then input the "keystore password" : android
            then you can see your digital signature SHA1 like below picture


            (2)get the package name
                open your android studio and you can see it at top of the MainActivity.java, like mine:

    then submit and you can get the key like below picture


2 for practice
    see the help:
http://developer.baidu.com/map/index.php?title=androidsdk/guide/hellobaidumap
    and down the LBS Android SDK:
http://developer.baidu.com/map/index.php?title=androidsdk/sdkandev-download