#40照片編輯 App|文字/拍立得

傳遞資料到下一頁

前篇：

#36照片編輯 App — 選照片

#36–2照片編輯 App — 旋轉/鏡射/裁切

#36–3照片編輯 App — 亮度/對比/飽和度/濾鏡/顏色

polaroidViewController(編輯拍立得頁面)

📌畫面載入&按下相簿時，呼叫photoLibrary可以從相簿裡選照片

override func viewDidLoad() {
super.viewDidLoad()
openLibrary()
}
func openLibrary(){
let controller = UIImagePickerController()
controller.sourceType = .photoLibrary
controller.delegate = self
present(controller, animated: true, completion: nil)
}

📌定義Function(將所選擇的照片顯示在ImageView)

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
let image = info[.originalImage] as? UIImage
polaroidImg.image = image
dismiss(animated: true, completion: nil)
}

📌打完按下return收回鍵盤

📌傳遞資料

@IBSegueAction func resultPolaroid(_ coder: NSCoder) -> printViewController? {
let polaroid = polaroidImg.image
guard let phototext = phototext.text else { return nil }
return printViewController(coder: coder, polaroid: polaroid!, phototext: phototext)
}

printViewController(印出照片)

📌接收資料

init?(coder: NSCoder, polaroid: UIImage, phototext: String) {
self.polaroid = polaroid
self.phototext = phototext
super.init(coder: coder)
}
required init?(coder: NSCoder) {
fatalError(“init(coder:) has not been implemented”)
}

📌存取照片

@IBAction func savePolaroid(_ sender: UIButton) {
let renderer = UIGraphicsImageRenderer(size: photoView.bounds.size)
let image = renderer.image(actions: { (context) in
photoView.drawHierarchy(in: photoView.bounds, afterScreenUpdates: true)})
let activityViewController = UIActivityViewController(activityItems: [image], applicationActivities: nil)
present(activityViewController, animated: true, completion: nil)
}

GIF：

GitHub：

ninayang036/PhotoEditor