It is a sample program to get an image from the photo library of the iPhone.
In order to select images from the photo library, you have to specify that the photo library is used in the info.plist file of the project.
If you don't write this, UIImagePickerController won't work.
Use the following values for the key
NSPHOtoLibraryUsageDescription.
Type is String and the reason for its use is written in the Value.
I've heard that if you don't write the reason for using it, it will be rejected at the time of examination.
It looks like the image below.
The code looks like this
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| import UIKit | |
| class ViewController: UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate { | |
| var imagePickUpButton:UIButton = UIButton() | |
| var picker: UIImagePickerController! = UIImagePickerController() | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| //押されるとUIImagePickerControllerが開くボタンを作成する | |
| imagePickUpButton.frame = self.view.bounds | |
| imagePickUpButton.addTarget(self, action: #selector(imagePickUpButtonClicked(sender:)), for: .touchUpInside) | |
| imagePickUpButton.backgroundColor = UIColor.gray | |
| imagePickUpButton.setTitle("Toupe Me!!", for: UIControlState.normal) | |
| self.view.addSubview(imagePickUpButton) | |
| } | |
| //basicボタンが押されたら呼ばれます | |
| func imagePickUpButtonClicked(sender: UIButton){ | |
| //PhotoLibraryから画像を選択 | |
| picker.sourceType = UIImagePickerControllerSourceType.photoLibrary | |
| //デリゲートを設定する | |
| picker.delegate = self | |
| //現れるピッカーNavigationBarの文字色を設定する | |
| picker.navigationBar.tintColor = UIColor.white | |
| //現れるピッカーNavigationBarの背景色を設定する | |
| picker.navigationBar.barTintColor = UIColor.gray | |
| //ピッカーを表示する | |
| present(picker, animated: true, completion: nil) | |
| } | |
| //UIImagePickerControllerのデリゲートメソッド | |
| //画像が選択された時に呼ばれる. | |
| func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { | |
| if let image = info[UIImagePickerControllerOriginalImage] as? UIImage { | |
| //ボタンの背景に選択した画像を設定 | |
| imagePickUpButton.setBackgroundImage(image, for: UIControlState.normal) | |
| } else{ | |
| print("Error") | |
| } | |
| // モーダルビューを閉じる | |
| self.dismiss(animated: true, completion: nil) | |
| } | |
| //画像選択がキャンセルされた時に呼ばれる. | |
| func imagePickerControllerDidCancel(_ picker: UIImagePickerController) { | |
| // モーダルビューを閉じる | |
| self.dismiss(animated: true, completion: nil) | |
| } | |
| } | |