Map applications use Com.google.android.maps this package. Used by the Mapview control. But before you need to apply for a development API key, this key will be tied to the current computer user. And then through the key to the official application can get a development of the API key
<1> first find the user's Debug.keystore file, you can "run" inside the search Debug.keystore, such as: C:usersadministrator.androiddebug.keystore
<2> next get MD5 fingerprints, a lot of wrong online. Looks like the new version defaults to appear SHA1 encryption. All is displayed by adding the-v argument.
First run cmd, in the DOS interface, enter
Keytool-list-v-keystore C:usersbystander.androiddebug.keystore
command, and then let you enter the KeyStore password,
Input: Android, after which there will be fingerprint authentication MD5, as follows:
<3> go to the official Generate real API Key
Access the Sign up for the Android Maps API to enter that value, agree to the terms, and then ask to log in with Google account. Then you'll get a key. Ok