来自 PHPickerViewController 的多个按钮图像
Multiple Button Images from PHPickerViewController
我的视图有四个按钮。当您单击一个按钮时,它会启动 PHPickerViewController,允许用户从他们的设备 select 图像。我如何知道点击了哪个按钮,以便我可以在该特定按钮上设置所选图像?
@objc func showImage(sender: UIButton){
var configuration1 = PHPickerConfiguration(photoLibrary: .shared())
configuration1.selectionLimit = 1
configuration1.filter = .images
let picker = PHPickerViewController(configuration: configuration1)
picker.delegate = self
present(picker, animated: true, completion: nil)
}
extension ProfileController: PHPickerViewControllerDelegate {
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
dismiss(animated: true, completion: nil)
guard !results.isEmpty else {
return
}
for result in results {
result.itemProvider.loadObject(ofClass: UIImage.self) {
[weak self]
object, error in
DispatchQueue.main.async {
guard let self = self else {
return
}
if let image = object as? UIImage {
}
}
}
}
}
}
在你的 ViewController class 中:var selectedButton: UIButton!
@objc func showImage(sender: UIButton) {
selectedButton = sender
var configuration1 = PHPickerConfiguration(photoLibrary: .shared())
// rest of your code
}
然后在你的 didFinishPicking 委托中:
if let image = object as? UIImage {
selectedButton.setImage(image, for: .normal)
}
我的视图有四个按钮。当您单击一个按钮时,它会启动 PHPickerViewController,允许用户从他们的设备 select 图像。我如何知道点击了哪个按钮,以便我可以在该特定按钮上设置所选图像?
@objc func showImage(sender: UIButton){
var configuration1 = PHPickerConfiguration(photoLibrary: .shared())
configuration1.selectionLimit = 1
configuration1.filter = .images
let picker = PHPickerViewController(configuration: configuration1)
picker.delegate = self
present(picker, animated: true, completion: nil)
}
extension ProfileController: PHPickerViewControllerDelegate {
func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) {
dismiss(animated: true, completion: nil)
guard !results.isEmpty else {
return
}
for result in results {
result.itemProvider.loadObject(ofClass: UIImage.self) {
[weak self]
object, error in
DispatchQueue.main.async {
guard let self = self else {
return
}
if let image = object as? UIImage {
}
}
}
}
}
}
在你的 ViewController class 中:var selectedButton: UIButton!
@objc func showImage(sender: UIButton) {
selectedButton = sender
var configuration1 = PHPickerConfiguration(photoLibrary: .shared())
// rest of your code
}
然后在你的 didFinishPicking 委托中:
if let image = object as? UIImage {
selectedButton.setImage(image, for: .normal)
}