SwiftでTwitterAPIを使う

ViewController.swift

// iOSに登録されているアカウントを選択して、
// プロフィール画像とバナー画像を表示させるサンプルです

import UIKit
import Accounts
import Social

class ViewController: UIViewController {
	
	let myTwitter:TwitterController = TwitterController()

	override func viewDidLoad() {
		super.viewDidLoad()
		
		myTwitter.getAccounts { (accounts: [ACAccount]) -> Void in
			self.showAccountSelectSheet(accounts)
		}
	}
	
	private func showAccountSelectSheet(accounts: [ACAccount]) {
		
		let alert:UIAlertController = UIAlertController(title: "Twitter",
			message: "アカウントを選択してください",
			preferredStyle: .ActionSheet)
		
		for account in accounts {
			alert.addAction(UIAlertAction(title: account.username,
				style: .Default,
				handler: { (action) -> Void in
					// アカウントの選択
					self.myTwitter.twAccount = account
					// ユーザ情報を取得
					self.myTwitter.getUser(self.onGetUser)
			}))
		}
		alert.addAction(UIAlertAction(title: "Cancel", style: .Cancel, handler: nil))
		self.presentViewController(alert, animated: true, completion: nil)
	}
	
	private func onGetUser(data: NSMutableDictionary) {
		print(data)
		// 画像を取得
		print(data["profile_image_url"])
		let urlStr:String = data["profile_image_url_https"] as! String
		let url: NSURL = NSURL(string: urlStr)!
		let imgData:NSData = NSData(contentsOfURL: url)!
		let img:UIImage = UIImage(data: imgData)!
		let imgView:UIImageView = UIImageView(image: img)
		imgView.frame = CGRect(x: 10, y: 10, width: img.size.width, height: img.size.height)
		self.view.addSubview(imgView)
		
		// バナーを取得
		self.myTwitter.getBanner(self.onGetBanner)
		
		
		// タイムラインを取得
		self.myTwitter.getTimeline(self.onGetTimeline)
	}
	
	private func onGetTimeline(data: NSMutableArray) {
		print(data)
	}
	private func onGetBanner(data: NSMutableDictionary) {
		print(data)
		
		print(data["profile_image_url"])
		let urlStr:String = data["sizes"]!["mobile_retina"]!!["url"] as! String
		let url: NSURL = NSURL(string: urlStr)!
		let imgData:NSData = NSData(contentsOfURL: url)!
		let img:UIImage = UIImage(data: imgData)!
		let imgView:UIImageView = UIImageView(image: img)
		imgView.frame = CGRect(x: 10, y: 300, width: img.size.width, height: img.size.height)
		self.view.addSubview(imgView)
		
		self.myTwitter.postTweet("test tweet from app")
	}

	override func didReceiveMemoryWarning() {
		super.didReceiveMemoryWarning()
		// Dispose of any resources that can be recreated.
	}
	
	
}

class TwitterController {
	var accountStore:ACAccountStore = ACAccountStore()
	var twAccount: ACAccount?
	
	internal func getAccounts(callback: [ACAccount] -> Void) {
		
		let accountType:ACAccountType = accountStore.accountTypeWithAccountTypeIdentifier(ACAccountTypeIdentifierTwitter)
		accountStore.requestAccessToAccountsWithType(accountType, options: nil) { (granted: Bool, error: NSError?) -> Void in
			if error != nil {
				print("error! \(error)")
				return
			}
			
			if !granted {
				print("error! Twitterアカウントの利用が許可されていません")
				return
			}
			
			let accounts = self.accountStore.accountsWithAccountType(accountType) as! [ACAccount]
			if accounts.count == 0 {
				print("error! 設定画面からアカウントを設定してください")
				return
			}
			
			print("アカウント取得完了")
			callback(accounts)
		}
	}
	
	// タイムラインを取得する
	internal func getTimeline(callbabk: NSMutableArray -> Void) {
		
		let url:NSURL = NSURL(string: "https://api.twitter.com/1.1/statuses/user_timeline.json")!
		
		sendRequest(url, requestMethod: .GET, params: nil) { (responseData, urlResponse) -> Void in
			do {
				let result:NSMutableArray = try NSJSONSerialization.JSONObjectWithData(responseData, options: .AllowFragments) as! NSMutableArray
				callbabk(result)
			} catch {
				print("エラーが発生しました")
			}
		}
	}
	
	// ユーザの情報を取得
	internal func getUser(callback: NSMutableDictionary -> Void) {
		let url:NSURL = NSURL(string: "https://api.twitter.com/1.1/users/show.json")!
		let params = ["screen_name" : (twAccount?.username)!]
		
		sendRequest(url, requestMethod: .GET, params: params) { (responseData, urlResponse) -> Void in
			do {
				let result:NSMutableDictionary = try NSJSONSerialization.JSONObjectWithData(responseData, options: .AllowFragments) as! NSMutableDictionary
				callback(result)
			} catch {
				print("エラーが発生しました")
			}
		}
	}
	
	// ユーザのバナー画像を取得
	internal func getBanner(callback: NSMutableDictionary -> Void) {
		
		let url:NSURL = NSURL(string: "https://api.twitter.com/1.1/users/profile_banner.json")!
		let params = ["screen_name" : (twAccount?.username)!]
		
		sendRequest(url, requestMethod: .GET, params: params) { (responseData, urlResponse) -> Void in
			do {
				let result: NSMutableDictionary = try NSJSONSerialization.JSONObjectWithData(responseData, options: .AllowFragments) as! NSMutableDictionary
				callback(result)
			} catch {
				print("エラーが発生しました")
			}
		}
	}
	
	// 投稿
	internal func postTweet(msg:String) {
		let url:NSURL = NSURL(string: "https://api.twitter.com/1.1/statuses/update.json")!
		let params = ["status" : msg]
		
		sendRequest(url, requestMethod: .POST, params: params) { (responseData, urlResponse) -> Void in
			// 投稿完了ハンドラ
			print(responseData)
		}
	}
	
	// リクエスト
	private func sendRequest(url: NSURL, requestMethod: SLRequestMethod, params: AnyObject?, responseHandler: (responseData: NSData!, urlResponse: NSHTTPURLResponse!) -> Void) {
		let request:SLRequest = SLRequest(
			forServiceType: SLServiceTypeTwitter,
			requestMethod: requestMethod,
			URL: url,
			parameters: params as? [NSObject : AnyObject]
		)
		request.account = twAccount
		request.performRequestWithHandler { (responseData: NSData!, urlResponse: NSHTTPURLResponse!, error: NSError!) -> Void in
			if error != nil {
				print("error is \(error)")
			} else {
				responseHandler(responseData: responseData, urlResponse: urlResponse)
			}
		}
	}
}