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Added buttons to add to and remove from photo album

This commit is contained in:
Simon 2018-12-28 18:18:44 +08:00
parent e35f7f0dfe
commit 408aadf056
1 changed files with 59 additions and 8 deletions
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67
Examples/ImagesExample/ImagesExample/ViewController.swift
View File

@ -16,11 +16,18 @@ class ViewController: UIViewController {
let images: [UIImage] = PlaceholderKit.defaultPlaceholders
let photosLibary = PhotosLibrary()
// Views
let containerView = UIView()
let saveToPhotosButton: UIButton = UIButton(type: .system)
let removeFromPhotosButton: UIButton = UIButton(type: .system)
override func viewDidLoad() {
super.viewDidLoad()
navigationItem.title = "Placeholders"
view.backgroundColor = UIColor(red: 0.3, green: 0.3, blue: 0.3, alpha: 1.0)
setupButtonContainerView()
setupCollectionViewController()
setupButtons()
}
func setupCollectionViewController() {
@ -34,22 +41,66 @@ class ViewController: UIViewController {
NSLayoutConstraint.activate([
collectionView.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
collectionView.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
collectionView.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor),
collectionView.bottomAnchor.constraint(equalTo: containerView.topAnchor),
collectionView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor)
])
}
func insertImagesIntoPhotos(completionHandler: ((Bool, Error?) -> Void)? = nil) {
photosLibary.performChanges({ library in
library.createAlbum()
try? library.addImages(self.images)
}, completionHandler: completionHandler)
func setupButtonContainerView() {
containerView.backgroundColor = UIColor("#fafafa")
containerView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(containerView)
NSLayoutConstraint.activate([
containerView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
containerView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
containerView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
containerView.heightAnchor.constraint(equalToConstant: 140)
])
}
func removeAlbum(completionHandler: ((Bool, Error?) -> Void)? = nil) {
func setupButtons() {
let stackView = UIStackView()
stackView.axis = .vertical
stackView.translatesAutoresizingMaskIntoConstraints = false
stackView.alignment = .center
stackView.distribution = .fillEqually
containerView.addSubview(stackView)
stackView.addArrangedSubview(saveToPhotosButton)
stackView.addArrangedSubview(removeFromPhotosButton)
NSLayoutConstraint.activate([
stackView.topAnchor.constraint(equalTo: containerView.safeAreaLayoutGuide.topAnchor),
stackView.bottomAnchor.constraint(equalTo: containerView.safeAreaLayoutGuide.bottomAnchor),
stackView.leadingAnchor.constraint(equalTo: containerView.safeAreaLayoutGuide.leadingAnchor),
stackView.trailingAnchor.constraint(equalTo: containerView.safeAreaLayoutGuide.trailingAnchor),
])
saveToPhotosButton.setTitle("Save to Photos", for: .normal)
removeFromPhotosButton.setTitle("Remove from Photos", for: .normal)
saveToPhotosButton.addTarget(self, action: #selector(insertImagesIntoPhotos),
for: .touchUpInside)
removeFromPhotosButton.addTarget(self, action: #selector(removeAlbum),
for: .touchUpInside)
}
@objc func insertImagesIntoPhotos() {
photosLibary.performChanges({ library in
library.createAlbum()
}, completionHandler: { success, error in
if success {
self.photosLibary.performChanges({ library in
try? library.addImages(self.images)
})
}
})
}
@objc func removeAlbum() {
photosLibary.performChanges({ library in
library.removeAlbum()
}, completionHandler: completionHandler)
})
}
}