swift / modalで開いた画面を閉じる

    @IBAction func closeTapped(){
        self.dismissViewControllerAnimated(true, completion: nil);
    }

swift / URLエンコード

        let query = "ニュース";
        let encoded = query.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())
        let url = "https://ajax.googleapis.com/ajax/services/search/news?v=1.0&hl=ja&rsz=8&q=" + encoded!;

関連情報

google-news-api-ref
https://developers.google.com/web-search/docs/reference?csw=1

swift / 文字列置換

• <b>タグを抜く例

        var title = newsDic["title"] as? String;
        title = title?.stringByReplacingOccurrencesOfString("<b>", withString: "");
        title = title?.stringByReplacingOccurrencesOfString("</b>", withString: "");

xcode / httpサイトを見れるようにする設定

• プロジェクトアイコンをクリックして、設定画面から「Info」のタブ
• [+] App Transport Security Settings を追加
• その中に、[+] Allow Arbitrary Loads で Boolean を True

swift / JSON取得＆リスト表示＆タイトルクリックでURLに飛ぶ

• 世界一受けたいiphoneアプリの授業から転載

import UIKit
import Alamofire

class ViewController: UIViewController,UITableViewDataSource,UITableViewDelegate {
    @IBOutlet var table: UITableView!
    var newsDataArray = NSArray();
    func tableView(tableView: UITableView, numberOfRowsInSection section:Int) -> Int{
        return newsDataArray.count
    }
    
    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath)->UITableViewCell{
        let cell = UITableViewCell(style: UITableViewCellStyle.Subtitle, reuseIdentifier: "Cell")
        let newsDic = newsDataArray[indexPath.row] as! NSDictionary
        cell.textLabel?.text = newsDic["title"] as? String
        cell.textLabel?.numberOfLines = 3
        cell.detailTextLabel?.text = newsDic["publishedDate"] as? String
        return cell
    }

    func tableView(tableView: UITableView,didSelectRowAtIndexPath indexPath: NSIndexPath){
        let newsDic = newsDataArray[indexPath.row] as! NSDictionary;
        let newsUrl = newsDic["unescapedUrl"] as! String;
        let url = NSURL(string:newsUrl);
        let app = UIApplication.sharedApplication();
        app.openURL(url!);
    }
    
    override func viewDidLoad() {
        table.dataSource = self;
        table.delegate = self;
        super.viewDidLoad()
        getRSS();
    }

    func getRSS(){
        let requestUrl = "https://ajax.googleapis.com/ajax/services/search/news?v=1.0&topic=p&hl=ja&rsz=8";
        Alamofire.request(.GET, requestUrl, parameters: nil).responseJSON {
            response in
            if let json = response.result.value {
                let jsonDic = json as! NSDictionary
                let responseData = jsonDic["responseData"] as! NSDictionary
                self.newsDataArray = responseData["results"] as! NSArray
                self.table.reloadData()
            }
        }
    }

swift / jsonをhttp経由で取得

Download

• https://github.com/Alamofire/Alamofire
• Download後、[Alamofire.xcodeproj]をライブラリメニューにペースト

setting

• general > embed Binary で[＋]で追加。
• [Alamofile iOS]を選択して追加

code

        let requestUrl = "https://ajax.googleapis.com/ajax/services/search/news?v=1.0&topic=p&hl=ja&rsz=8";

        Alamofire.request(.GET, requestUrl, parameters: nil).responseJSON {
            response in
            if let json = response.result.value {
                print(json)
            }
        }

swift / UIViewを左右に揺らす

       var transform:CGAffineTransform = CGAffineTransformIdentity
        let duration:Double = 0.5
        transform = CGAffineTransformMakeRotation(CGFloat(0.25*M_PI))
        UIView.animateWithDuration(duration,animations:{()-> Void in
            sender.transform = transform
            })
            { (Bool)-> Void in
             UIView.animateWithDuration(duration,animations:{ () -> Void in
                sender.transform = CGAffineTransformIdentity
                }){ (Bool) -> Void in
            }
        }