Basic Android Facebook interface(repost)

I need some Android code that will allow my existing Android app to connect to Facebook.

The code you supply must do the following:

- Login as a user

- Retrieve the user's status

- Retrieve the user's list of friends

- Retrieve the status of each friend

- logout

## Deliverables

The code you write should connect to Facebook using one of their supported interfaces. It should follow Facebook's standard recommendations for security and best practices.

I expect the code you deliver to expose an API like the following.

(You will implement the FacebookConnector class, and your code will communicate with a FacebookClient in my code. ? The implementation should be asynchronous. I will request actions from you. Your code will return immediately, and will later notify me when it has results):

// (I assume that the Facebook API you use will have a notion of

// a? userId -- a type that can represent either the logged in

// user or? a buddy. I'm assuming that this userId is a string.

// If the userId is an? integer, or if you need different types

// for the logged-in user and his? buddies, feel free to make

// the obvious changes to my interface).

class UserId {

? ? private String userId;

? ? ...

}

interface FacebookClient {

? ? // Callback to report an error (connection errror, login

? ? // failed, invalid/ userId token, etc.)

? ? // Pass back a string or object explaining the error.

? ? void error(...);

? ? void loginOk(UserId userId);

? ? // Return a user's status.

? ? void gotStatus(UserId userId, string status);

? ? // Return a user's friends.

? ? void gotFriends(UserId user, UserId[] friends);

}

class FacebookConnector {

? ? // Initialize the interface. You can require more parameters

? ? // here, if? needed. (e.g. Facebook application tokens).

? ? FacebookConnector(FacebookClient callback);

? ? // Callback when login has succeeded.

? ? // Later deliver success or failure back to me? by calling

? ? // [url removed, login to view](...).

? ? void login(String username, String password);

? ? // Only valid to call this after login has succeeded.

? ? // Get a user's status.

? ? void getStatus(UserId userId);

? ? // Only valid to ? call this after login has succeeded.

? ? // Return all of the user's friends. (Note that I only need

? ? // to call? this for the logged-in user).

? ? void getFriends(UserId userId);

? ? // Done

? ? logout();

}

Note: if it is more efficient for facebook to return multiple statuses at once, please add another method getStatus(UserId[] userIds) and appropriate callback.

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Project ID: #2982642

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