Question

I am working on the application where I have to get the subscriberid, oauth_token and oauth_token_secret for Google, Yahoo and Facebook. How can I do this?

Answer 1

Well for all OAuth system you need to follow the below mentioned steps

1. Register you application with them and get client_key and secret_key
2. When user want to get authenticate them self pass on the secret key and client_key to OAuth system to get AuthorizationUrl which will contain request token.
3. Redirect user to these provider and once user authenticate them, OAuth system will redirect back user to your application.
4. They will send a verification code, use that verification_code along with the request token got in step2 to get Access token.
5. Once you have Access_Token you can interact with the oAuth system to access user data.

out of them only step 3 is where user will be in directly engaged and for rest of steps things will happen behind the scene.
Each service provide has a well defined documentation like at which URL to send request to get request token/Access Token and what they expect in request data what they will send back in conformation etc.

here are the details

Using OAuth 2.0 to Access Google APIs

Yahoo OAuth documentation

FaceBook OAuth

Though i have never worked with mobile application but the protocol is more or less same.
My suggestion is to use some API to achieve this.

hope will help you