Are there any recommended client libraries to aid or make Oauth 2.0 smooth for Java the current libraries
Seem to only support the Fitbit 1.0 API
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We don't have a confirmed list yet, but you might not need a dedicated OAuth 2.0 library. Most applications can use any generic HTTP library that allows setting a custom Authorization header.
The Fitbit OAuth 2.0 documentation shows exactly what each HTTP request looks like at each step of the authorization process and making requests.
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