如何检查用户是否授予使用相机的权限？

您可以使用以下代码执行相同的操作：

if AVCaptureDevice.authorizationStatusForMediaType(AVMediaTypeVideo) ==  AVAuthorizationStatus.Authorized {    // Already Authorized} else {    AVCaptureDevice.requestAccessForMediaType(AVMediaTypeVideo, completionHandler: { (granted: Bool) -> Void in       if granted == true {// User granted       } else {// User rejected       }   })}

注意：

1. 确保

   AVFoundation

   在构建阶段的“链接二进制”部分中添加框架
2. 您应该

   import AVFoundation

   在课堂上写一些用于导入的内容

   AVFoundation

SWIFT 3

if AVCaptureDevice.authorizationStatus(forMediaType: AVMediaTypeVideo) ==  AVAuthorizationStatus.authorized {   // Already Authorized} else {   AVCaptureDevice.requestAccess(forMediaType: AVMediaTypeVideo, completionHandler: { (granted: Bool) -> Void in      if granted == true {         // User granted      } else {         // User Rejected      }   })}

斯威夫特4

if AVCaptureDevice.authorizationStatus(for: .video) ==  .authorized {    //already authorized} else {    AVCaptureDevice.requestAccess(for: .video, completionHandler: { (granted: Bool) in        if granted { //access allowed        } else { //access denied        }    })}