快速使用 UIDocumentPickerViewController(documentTypes:)

Question

在我的代码中使用 UIDocumentPickerViewConroller 在应用程序中选择音频文件时，出现此错误并且我找不到(documentTypes: )at UIDocumentPickerViewController.

 @IBAction func AddMusic(_ sender: UIButton) {
        let documentPicker = UIDocumentPickerViewController(documentTypes: [kUTTypeAudio as String], in: .import)
        documentPicker.delegate = self
        documentPicker.allowsMultipleSelection = false
        present(documentPicker, animated: true, completion: nil)
    }
    
}

extension ViewController: UIDocumentPickerDelegate{
    func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]){
        
    }
}

Answer 1

UIDocumentPickerViewController(documentTypes: [String], in: UIDocumentPickerMode) 在 iOS 14.0 中被弃用

该方法被这个 UIDocumentPickerViewController(forOpeningContentTypes contentTypes: [UTType], asCopy: Bool) 方法取代

首先，您需要导入 UniformTypeIdentifiers

import UniformTypeIdentifiers

所以，你可以使用它如下

let supportedTypes: [UTType] = [UTType.audio]
let pickerViewController = UIDocumentPickerViewController(forOpeningContentTypes: supportedTypes, asCopy: true)
pickerViewController.delegate = self
pickerViewController.allowsMultipleSelection = false
pickerViewController.shouldShowFileExtensions = true
self.present(pickerViewController, animated: true, completion: nil)