【Xcode/Swift】某大喜利アプリを真似してみよう [Xib開発]

import UIKit
import Alamofire
import SwiftyJSON
import SDWebImage
import Photos
import SPIndicator

class HomeViewController: UIViewController {

    @IBOutlet private weak var odaiTextField: UITextField!
    @IBOutlet private weak var odaiSearchButton: UIButton!
    @IBOutlet private weak var odaiImageView: UIImageView!
    @IBOutlet private weak var odaiCommentView: UITextView!
    @IBOutlet private weak var nextOdaiButton: UIButton!
    @IBOutlet private weak var odaiPostButton: UIButton!

    // 画像カウント用
    private var count = 0
    // ボタンの角丸値
    private let cornerRadius: CGFloat = 12

    override func viewDidLoad() {
        super.viewDidLoad()
        setupView()
    }

    private func setupView() {
        odaiCommentView.layer.cornerRadius = cornerRadius
        nextOdaiButton.layer.cornerRadius = cornerRadius
        odaiPostButton.layer.cornerRadius = cornerRadius
        getImages(keyword: "funny")
    }

    // 画像の取得 (APIを叩いてPixabayからキーワードに該当する画像を持ってくる)
    private func getImages(keyword: String) {
        // Pixabayに登録して個人用のAPIキーを取得する
        let url = "https://pixabay.com/api/?key=<#自分のAPIキー#>&q=\(keyword)"
        AF.request(url, method: .get, parameters: nil, encoding: JSONEncoding.default).responseJSON {
            (response) in
            switch response.result {
            case .success:
                let json: JSON = JSON(response.data as Any)
                guard let imageString = json["hits"][self.count]["webformatURL"].string else {
                    let indicatorView = SPIndicatorView(title: "エラー", message: "画像がありませんでした", preset: .error)
                    indicatorView.present(duration: 1)
                    self.odaiSearchButton.isEnabled = false
                    DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
                        self.odaiSearchButton.isEnabled = true
                    }
                    return
                }
                self.odaiImageView.sd_setImage(with: URL(string: imageString), completed: nil)
            case .failure(let error):
                print(error)
            }
        }
    }

    @IBAction func odaiSearchAction(_ sender: Any) {
        self.count = 0
        guard let odaiKeyWord = odaiTextField.text else { return }
        if odaiTextField.text == "" {
            let indicatorView = SPIndicatorView(title: "エラー", message: "検索ワードを入力してください", preset: .error)
            indicatorView.present(duration: 1)
            odaiSearchButton.isEnabled = false
            DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
                self.odaiSearchButton.isEnabled = true
            }
        } else {
            getImages(keyword: odaiKeyWord)
        }
    }

    @IBAction func searchNextOdaiAction(_ sender: Any) {
        count += 1
        guard let odaiKeyWord = odaiTextField.text else { return }
        if odaiTextField.text == "" {
            getImages(keyword: "funny")
        } else {
            getImages(keyword: odaiKeyWord)
        }
        odaiCommentView.text = ""
    }

    @IBAction func postOdaiAction(_ sender: Any) {
        if odaiCommentView.text == "" {
            let indicatorView = SPIndicatorView(title: "エラー", message: "コメントを入力してください", preset: .error)
            indicatorView.present(duration: 1)
            odaiPostButton.isEnabled = false
            DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
                self.odaiPostButton.isEnabled = true
            }
            return
        }
        guard let odaiImage = odaiImageView.image else { return }
        let resultViewController = ResultViewController()
        resultViewController.commentString = odaiCommentView.text
        resultViewController.resultImage = odaiImage
        self.navigationController?.pushViewController(resultViewController, animated: true)
    }

}

import UIKit

class ResultViewController: UIViewController {

    @IBOutlet private weak var resultImageView: UIImageView!
    @IBOutlet private weak var resultComment: UILabel!
    @IBOutlet private weak var shareButton: UIButton!
    @IBOutlet private weak var backButton: UIButton!

    var resultImage = UIImage()
    var commentString = String()
    var screenShotImage = UIImage()
    private let cornerRadius: CGFloat = 12

    override func viewDidLoad() {
        super.viewDidLoad()
        setupView()
    }

    private func setupView() {
        shareButton.layer.cornerRadius = cornerRadius
        backButton.layer.cornerRadius = cornerRadius
        resultImageView.image = resultImage
        resultComment.text = commentString
        resultComment.adjustsFontSizeToFitWidth = true
        self.navigationController?.isNavigationBarHidden = true
    }

    // 画像のスクショを取得する
    private func takeScreenShot() {
        let width = CGFloat(UIScreen.main.bounds.size.width)
        let height = CGFloat(UIScreen.main.bounds.size.height / 1.3)
        let size = CGSize(width: width, height: height)
        UIGraphicsBeginImageContextWithOptions(size, false, 0.0)
        self.view.drawHierarchy(in: view.bounds, afterScreenUpdates: true)
        if let image = UIGraphicsGetImageFromCurrentImageContext() {
            screenShotImage = image
        }
        UIGraphicsEndImageContext()
    }

    @IBAction func shareAction(_ sender: Any) {
        takeScreenShot()
        let items = [screenShotImage] as [Any]
        let activityViewController = UIActivityViewController(activityItems: items, applicationActivities: nil)
        present(activityViewController, animated: true, completion: nil)
    }

    @IBAction func backAction(_ sender: Any) {
        self.navigationController?.popViewController(animated: true)
    }

}

import UIKit

class SceneDelegate: UIResponder, UIWindowSceneDelegate {

    var window: UIWindow?

    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
        guard let _ = (scene as? UIWindowScene) else { return }
        // 追記 -----ここから (NavigationControllerを使用する場合)
        window = UIWindow(windowScene: scene as! UIWindowScene)
        window?.makeKeyAndVisible()
        let homeViewController = HomeViewController()
        let rootViewController = UINavigationController(rootViewController: homeViewController)
        window?.rootViewController = rootViewController
        // 追記 -----ここまで
    }

    func sceneDidDisconnect(_ scene: UIScene) {

    }

    func sceneDidBecomeActive(_ scene: UIScene) {

    }

    func sceneWillResignActive(_ scene: UIScene) {

    }

    func sceneWillEnterForeground(_ scene: UIScene) {

    }

    func sceneDidEnterBackground(_ scene: UIScene) {

    }

}