I am working on Google API like chat, contacts and so on...
I am stuck on developer_key
as mentioned in gdata doc.
You can get this at https://code.goog
in https://code.google.com/apis/console/ , in SERVICES, turn on YOUTUBE API, then click API ACCESS in the left menu.
2017 Update
You should get a dialog from where you can copy this API key to use in your project. Hope this helps.
"Public API access" the key generated there is the key you got to paste into your public static final String DEVELOPER_KEY as part of this writing 26.12.2013 It is not the clientID but you got take the steps mentioned above to obtain one and generate the public api access key.
You should be able to generate a Youtube API key there.
The recommended way to authorize your API call is to use OAuth 2.0 (without API key), as pointed by the documentation an API key is only necessary when using OAuth 1.0 credentials.
The API key for your application can be found in the Google APIs Console in API Access > Simple API.