ios - 当前 ImagePickerView 导致崩溃

Question

这是我的代码，一个简单的类，其中包含一个在 Storyboard 中创建的 View ，其中包含一个用于显示 imagePickerView 的按钮。显示 imagePickerView，然后应用程序崩溃并显示 libc++abi.dylib: terminating with uncaught exception of type NSException

import Foundation
import UIKit


class ImageSelectionView: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {


override func viewDidLoad(){
    super.viewDidLoad()
}

@IBAction func backButtonTapped(_ sender: AnyObject) {
    self.navigationController?.dismiss(animated: true, completion: nil)
}


@IBAction func openPhotoLibrary(_ sender: AnyObject) {
    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary;
        imagePicker.allowsEditing = true
        present(imagePicker, animated: true, completion: nil)
        self.present(imagePicker, animated: true, completion: nil)
    }
}


func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage!, editingInfo: [NSObject : AnyObject]!) {
    self.dismiss(animated: true, completion: nil);
}




}

无法弄清楚哪里出了问题，任何帮助都会很棒，谢谢!

Answer 1

要访问照片库，您需要将 Privacy - Photo Library Usage Description 放入应用程序的 .plist 文件中，并附上一些说明，

如图所示

特别是在您的代码中，您编写了代码来两次呈现相同的 imagePicker，如下所示。

    present(imagePicker, animated: true, completion: nil)
    self.present(imagePicker, animated: true, completion:

所以我建议保留一个，可能是
present(imagePicker, animated: true, completion: nil)

或

self.present(imagePicker, animated: true, completion:nil)

希望对您有所帮助。

快乐编码......