question

I found that the key value is different everytime i view the value and download the api_key.txt file.

Wai, I've noticed the same thing, but it's actually immaterial to implementation. Once you've saved the API_key.txt to assets/ you shouldn't need to view the api key or generate another one. This same problem was actually slowing me down as well as you need the api_key for both GameCircle and IAP. If you are failing auth, (CANNOT_INITIALIZE) definitely get another key to save in your assets, but outside of that check to make sure your receivers are set up in your project for GameCircle. (The xml for the manifest is here https://developer.amazon.com/public/apis/engage/gamecircle/docs/initialize-android#Step%203.%20Update%20your%20AndroidManifest.xml%20File) Hopefully this helps you if you were having a problem.

Thanks. But the problem exist even if i just generate the key and not visit the page again. And i exactly follow the code from the example. So, i don't thank the problem is the coding. And the same coding work before in another apps. And It is wried if the key is not the same every time, how can they verify my key. I try to generate a new key but there is error popup said the server error. I think there some problem on their system. I have ask amazon and no reply yet. Message was edited by: Wai

Hi, GameCircle API keys are not always the same each time you download them, but they will all work the same with their associated security profile. If you are having issues with the client not initializing, I'd double check that your application is being signed properly and that the signature of the signed apk you are using is the same as for the security profile.