访问相机和照相馆

Question

在我的iOS应用中，我有一个ImageView和两个用于打开相机和照相馆的按钮。 当我单击按钮之一时，该应用程序将关闭。 （我正在设备上运行应用程序，而不是在模拟器上运行）我必须在代码中进行哪些更改？

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，您需要通过在plist中添加以下键来访问photoLibrary或相机的权限，并且需要使用适当的委托方法。

要访问照片库：

@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)
      } 
    }

要访问设备相机：

@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)
        }
    }

拾取并显示图像：

 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

如果您在iOS10上运行，则必须在Info.plist中添加条目以访问摄像头

将此密钥放在Info.plist中

隐私摄像机使用说明

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

如果不是这样，则应用程序会像您所遇到的那样崩溃

Answer 3

如果您正在ios 10中开发应用程序，则必须在info.plist中添加隐私权限设置，并在需要此隐私的地方进行描述。

隐私设置列表：

蓝牙共享– NSBluetoothPeripheralUsageDescription

日历– NSCalendarsUsageDescription

CallKit – NSVoIPUsageDescription

相机– NSCameraUsageDescription

联系人– NSContacts用法说明

健康-NSHealthShareUsageDescription和NSHealthUpdateUsageDescription

HomeKit – NSHomeKit使用说明

位置– NSLocationUsageDescription，NSLocationAlwaysUsageDescription，

NSLocationWhenInUseUsesDescription

媒体库– NSAppleMusicUsageDescription

麦克风– NSMicrophone使用说明

运动– NSMotionUsageDescription

照片– NSPhotoLibrary使用说明

提醒-NSRemindersUsageDescription

语音识别– NSSpeechRecognition用法说明

SiriKit – NSSiriUsageDescription

电视提供商-NSVideoSubscriberAccountUsageDescription

Answer 4

直到我们提到我们为什么要使用iOS 10时，才允许其访问联系人，相机，照片库，用户位置等。打开您的plist作为源代码，在dict下添加以下代码，然后再次运行它。

<!-- 🖼 Photo Library -->
<key>NSPhotoLibraryUsageDescription</key>
<string>$(PRODUCT_NAME) photo use</string>

<!-- 📷 Camera -->
<key>NSCameraUsageDescription</key>
<string>$(PRODUCT_NAME) camera use</string>

<!-- 📍 Location -->
<key>NSLocationUsageDescription</key>
<string>$(PRODUCT_NAME) location use</string>

<!-- 📒 Contacts -->
<key>NSContactsUsageDescription</key>
<string>$(PRODUCT_NAME) contact use</string>