Google Maps Tiles Doesn't Load

I'm developing a simple Google Maps app for Android. I'm using Eclipse and an Android Virtual Device. When running the app, no tiles are shown, and I get the message 'Couldn't get

Solution 1:

Finally, the problem was the maps apiKey. This topic is not very well explained over the internet.

Shortly, I would explain as following:

1. To use maps into an Android Virtual Machine, you use debug.keystore
2. To use maps into a real Android device, you need to create a key into a new keystore. Eclipse can do it for you if you right-click the project and export as a signed apk.
3. In both cases, you need to go to console, and execute a Java tool called keytool.exe at java jdk /bin/ folder.
4. If keytool gives you the SHA1 code and not the MD5, the problem can be that you are using Java 7. Add -v parameter to the keytool call to enter verbose mode, and you'll get also the MD5 Google asks you for.