iOS 5 Twitter Framework: Tweeting without user input and confirmation (modal view controller)

Question

Essentially what I want is for the app, once the user has allowed access to their Twitter account, to be able to tweet whatever the user has selected in a UITableView<

Answer 1

The accepted answer is no longer valid due to several changes. This one works with iOS 10, Swift 3, and version 1.1 of Twitter's API.

** UPDATE **

This answer has been updated as the previous one relied upon a deprecated Twitter endpoint.

import Social
import Accounts

func postToTwitter() {
    let accountStore = ACAccountStore()
    let accountType = accountStore.accountType(withAccountTypeIdentifier: ACAccountTypeIdentifierTwitter)

    accountStore.requestAccessToAccounts(with: accountType, options: nil) { (granted, error) in
        if granted, let accounts = accountStore.accounts(with: accountType) {
            // This will default to the first account if they have more than one

            if let account = accounts.first as? ACAccount {
                let requestURL = URL(string: "https://api.twitter.com/1.1/statuses/update.json")
                let parameters = ["status" : "Tweet tweet"]
                guard let request = SLRequest(forServiceType: SLServiceTypeTwitter, requestMethod: .POST, url: requestURL, parameters: parameters) else { return }
                request.account = account
                request.perform(handler: { (data, response, error) in
                    // Check to see if tweet was successful
                })
            } else {
                // User does not have an available Twitter account
            }
        }
    }
}

This is the API that is being used.