将应用程序上传到Play商店后，为什么Google Maps服务无法正常工作?
问题描述：
我的应用程序已准备就绪，并且可以很好地运行，然后再将其上传到Google Play商店.
My Application is ready and it well worked before uploading it to Google Play Store.
将我的应用上传到Play商店后，谷歌地图服务无法正常工作.由于某种原因，地图是空的.
After I've uploaded my app to the Play Store, the google maps services didn't work. The map is empty for some reason.
为什么会这样?
答
您需要获取发布密钥
https://developers.google.com/maps/documentation/android-api/signup#release-cert
对于Linux或OS X，打开终端窗口并输入以下内容:
For Linux or OS X, open a terminal window and enter the following:
keytool -list -v -keystore YOUR_KEY_PATH
对于Windows Vista和Windows 7，运行:
For Windows Vista and Windows 7, run:
keytool -list -v -keystore YOUR_KEY_PATH
就我而言，我正在使用Linux，而我的命令是:
In my case, i'm using Linux and my command was:
keytool -list -v -keystore ~/projects/keys/myapp.jks
得到结果
Alias name: ALIAS NAME
Creation date: Jan 01, 2013
Entry type: PrivateKeyEntry
Certificate chain length: 1
Certificate[1]:
Owner: CN=Android Release, O=Android, C=US
Issuer: CN=Android Release, O=Android, C=US
Serial number: 4aa9b300
Valid from: Mon Jan 01 08:04:04 UTC 2013 until: Mon Jan 01 18:04:04 PST 2033
Certificate fingerprints:
MD5: AE:9F:95:D0:A6:86:89:BC:A8:70:BA:34:FF:6A:AC:F9
SHA1: BB:0D:AC:74:D3:21:E1:43:07:71:9B:62:90:AF:A1:66:6E:44:5D:75
Signature algorithm name: SHA1withRSA
Version: 3