Baidu Map errorcode:230 UID:-1 appid-1 msg:app SCODE code check failed

Recently to maintain a previous brother's Android project, which used the Baidu map, on my machine in accordance with the official website of the way to obtain the SHA1 Signature + package name application AK;

But it is reported errorcode:230 UID:-1 appid-1 msg:app SCODE code check failed;

The following solutions, on-line Baidu, resolved, transferred from: http://tieba.baidu.com/p/4069492658

Check your signature directly with the packaged APK, as follows:
1) Unzip the apk by modifying the suffix. zip file;
2) Enter the extracted Meta-inf directory, the file will exist under this directory Cert.rsa
3) Open cmd in this directory, enter command: Keytool-printcert-file CERT. RSA here will show the MD5 and SHA1 signatures.
A comparison, found that the signature is different, replace the signature after the problem is resolved, the reason has not been studied, not clear is not because of Android studio setup problems.

Baidu Map errorcode:230 UID:-1 appid-1 msg:app SCODE code check failed