访问摄像头和PhotoLibrary

Question

在我的iOS应用程序中，我有一个ImageView和两个用于打开相机和图片库的按钮。当我点击其中一个按钮时，应用程序就会关闭。(我在我的设备上运行应用程序，而不是在模拟器上)我必须在我的代码中更改什么？

class PhotoViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {


@IBOutlet weak var ImageDisplay: UIImageView!
@IBOutlet weak var libraryOutlet: UIButton!
@IBOutlet weak var cameraOutlet: UIButton!


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

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

@IBAction func openCameraButton(_ sender: UIButton) {
        let picker = UIImagePickerController()
        picker.delegate = self
        picker.sourceType = .camera
        present(picker, animated: true, completion: nil)

    }

@IBAction func openLibraryButton(_ sender: UIButton) {
        let picker = UIImagePickerController()
        picker.delegate = self
        picker.sourceType = .photoLibrary
        present(picker, animated: true, completion: nil)
    }

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    ImageDisplay.image = info[UIImagePickerControllerOriginalImage] as? UIImage
    dismiss(animated: true, completion: nil)
}

}

Answer 1

在iOS 10中，您需要权限才能访问photoLibrary或camera，方法是将以下键添加到您的plist中，并且您需要使用正确的委托方法。

​

​

访问图片库的：

@IBAction func library(_ sender: UIButton) {

    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary) {
        let imagePicker = UIImagePickerController()
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
        imagePicker.allowsEditing = true
        self.present(imagePicker, animated: true, completion: nil)
      } 
    }

访问设备摄像头的：

@IBAction func camera(_ sender: UIButton) {

    if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.camera) {    
        imagePicker.delegate = self
        imagePicker.sourceType = UIImagePickerControllerSourceType.camera;
        imagePicker.allowsEditing = false
        self.present(imagePicker, animated: true, completion: nil)
        }
    }

用于拾取和显示图像的：

 func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
    ImageDisplay.image = image
    }
    picker.dismiss(animated: true, completion: nil);
 }

输出：

​

​

Answer 2

如果在iOS10上运行，则必须在Info.plist中添加用于访问照相机的条目

将此密钥放入Info.plist

隐私-摄像头使用说明

http://useyourloaf.com/blog/privacy-settings-in-ios-10/

如果不是，应用程序将会崩溃，就像您的情况一样

Answer 3

如果你在iOS10中开发应用程序，那么必须在你的info.plist中添加隐私权限设置，并在需要隐私的地方描述一些东西。

隐私设置列表：

蓝牙共享- NSBluetoothPeripheralUsageDescription

日历- NSCalendarsUsageDescription

CallKit - NSVoIPUsageDescription

摄像头- NSCameraUsageDescription

联系人- NSContactsUsageDescription

健康- NSHealthShareUsageDescription & NSHealthUpdateUsageDescription

HomeKit - NSHomeKitUsageDescription

位置- NSLocationUsageDescription，NSLocationAlwaysUsageDescription，

NSLocationWhenInUseUsageDescription

媒体库- NSAppleMusicUsageDescription

麦克风- NSMicrophoneUsageDescription

Motion - NSMotionUsageDescription

图片- NSPhotoLibraryUsageDescription

提醒- NSRemindersUsageDescription

语音识别- NSSpeechRecognitionUsageDescription

SiriKit - NSSiriUsageDescription

电视提供商- NSVideoSubscriberAccountUsageDescription