KrauserHuang

    override func viewDidLoad() {
        super.viewDidLoad()
        //cell and cell spacing
        let itemSpace: CGFloat = 3
        //how many colume in a row
        let columeCount: CGFloat = 3
        //將collectionViewLayout轉型成UICollectionViewFlowLayout(向下捲動)
        let flowLayout = collectionViewLayout as? UICollectionViewFlowLayout
        //計算cell寬度，利用畫面的寬減去要的間距然後再除以要拆分成幾格(這樣可以避開不同的型號的iphone算出對應的寬度
        let width = floor((collectionView.bounds.width-itemSpace*(columeCount-1))/columeCount)

KrauserHuang

    override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath) as! PhotoCollectionViewCell
//        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: PropertyKeys.PhotoCollectionViewCell, for: indexPath) as! PhotoCollectionViewCell
        // Configure the cell
        //直接抓圖庫的圖片
//        cell.photoImageView.image = UIImage(named: "photo\(indexPath.item)")
        //藉由變數photos利用indexPath判斷要顯示哪個item
        cell.photoImageView.image = UIImage(named: "\(photos[indexPath.item])")
        return cell
    }

KrauserHuang

    @IBSegueAction func showDetail(_ coder: NSCoder) -> UIViewController? {
//        guard let item = collectionView.indexPathsForSelectedItems else { return nil }
        //利用indexPathsForSelectedItems?.first?.item(row)來對應要顯示的物件
        guard let item = collectionView.indexPathsForSelectedItems?.first?.item else { return nil }
        let controller = DetailViewController(coder: coder)
        controller?.imageName = photos[item]
        return controller
    }

KrauserHuang

struct InstagramData: Codable {
    let graphql: Graphql
    struct Graphql: Codable {
        //User information
        let user: User
        struct User: Codable {
            let biography: String //簡介
//            let external_url: URL //外部連結
            let full_name: String //ID名稱
            let profile_pic_url_hd: URL //大頭照

KrauserHuang

func fetchData() {
  //使用URLSession來抓取需要的資料
        let urlStr = "https://www.instagram.com/scottcbakken/?__a=1"
        if let url = URL(string: urlStr) {
            URLSession.shared.dataTask(with: url) { (data, response, error) in
                let decoder = JSONDecoder()
                decoder.dateDecodingStrategy = .secondsSince1970
                if let data = data,
                   let renderData = try? decoder.decode(InstagramData.self, from: data) {
                    self.igdata = renderData

KrauserHuang

//照片牆部分
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: PropertyKeys.imageCell, for: indexPath) as! PostGridCollectionViewCell
        //將圖片透過data抓下來變成image再回傳給cell
        if let postImageURL = igposts[indexPath.item].node.thumbnail_src,
           let url = URL(string: postImageURL) {
            URLSession.shared.dataTask(with: url) { (data, response, error) in
                if let data = data {
                    DispatchQueue.main.async {
                        cell.postGridImageView.image = UIImage(data: data)

KrauserHuang

//個人介紹、貼文數、被追蹤數、追蹤數
    override func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView {
        let reusableCell = collectionView.dequeueReusableSupplementaryView(ofKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: PropertyKeys.header, for: indexPath) as! ProfileCollectionReusableView
        reusableCell.profileImageView.layer.cornerRadius = reusableCell.profileImageView.frame.height / 2
        
        if igdata != nil {
            reusableCell.profileName.text = igdata.graphql.user.full_name
//            reusableCell.postsNumLabel.text = "\(igdata.graphql.user.edge_owner_to_timeline_media.count)"
            reusableCell.postsNumLabel.text = postsNumConvert(igdata.graphql.user.edge_owner_to_timeline_media.count)
//            reusableCell.followersNumLabel.text = "\(igdata.graphql.user.edge_followed_by.count)"

KrauserHuang

override func shouldPerformSegue(withIdentifier identifier: String, sender: Any?) -> Bool {
        if ageTextField.text?.isEmpty == false,
           heightTextField.text?.isEmpty == false,
           weightTextField.text?.isEmpty == false,
           activityButtonText.titleLabel?.text?.isEmpty == false {
            return true
        } else {
            let controller = UIAlertController(title: "Please fill in all the blank", message: "You need to fill all the blank to calculate your BMR & TDEE", preferredStyle: .alert)
            let okAction = UIAlertAction(title: "OK", style: .default, handler: nil)
            controller.addAction(okAction)

KrauserHuang

@IBSegueAction func showResult(_ coder: NSCoder) -> ResultViewController? {
        let sex = sexSegmented.titleForSegment(at: sexSegmented.selectedSegmentIndex) ?? "Male"
        let age = ageTextField.text!
        let height = heightTextField.text!
        let weight = weightTextField.text!
        let activitySelection = activityButtonText.titleLabel?.text ?? "Sedentary(office job)"
        let controller = ResultViewController(coder: coder)
        controller?.bmrInfo = BmrInfo(sex: sex, age: age, height: height, weight: weight, activitySelection: activitySelection)
        return controller
    }

KrauserHuang

    @IBAction func chooseAnswer(_ sender: UIButton) {
        let selectedAnswer = sender.currentTitle!
//        switch sender.tag {
//        case 1:
//            selectedAnswer = newQandA[questionIndex].optionA
//        case 2:
//            selectedAnswer = newQandA[questionIndex].optionB
//        case 3:
//            selectedAnswer = newQandA[questionIndex].optionC
//        case 4: