Merge pull request #293 from mattrubin/scanner-access-completion-queue

mattrubin · web-flow · commit 0a6641d4e514 · 2018-09-27T17:24:48.000-04:00
Dispatch AVCaptureDevice.requestAccess completion to the main queue
diff --git a/Authenticator/Source/QRScanner.swift b/Authenticator/Source/QRScanner.swift
@@ -99,7 +99,11 @@ class QRScanner: NSObject, AVCaptureMetadataOutputObjectsDelegate {
         guard !CommandLine.isDemo else {
             return
         }
-        AVCaptureDevice.requestAccess(for: .video, completionHandler: completionHandler)
+        AVCaptureDevice.requestAccess(for: .video) { accessGranted in
+            DispatchQueue.main.async {
+                completionHandler(accessGranted)
+            }
+        }
     }
 
     // MARK: AVCaptureMetadataOutputObjectsDelegate

Original file line number	Diff line number	Diff line change
`@@ -99,7 +99,11 @@ class QRScanner: NSObject, AVCaptureMetadataOutputObjectsDelegate {`
`99`	`99`	`guard !CommandLine.isDemo else {`
`100`	`100`	`return`
`101`	`101`	`}`
`102`		`- AVCaptureDevice.requestAccess(for: .video, completionHandler: completionHandler)`
	`102`	`+ AVCaptureDevice.requestAccess(for: .video) { accessGranted in`
	`103`	`+ DispatchQueue.main.async {`
	`104`	`+ completionHandler(accessGranted)`
	`105`	`+ }`
	`106`	`+ }`
`103`	`107`	`}`
`104`	`108`
`105`	`109`	`// MARK: AVCaptureMetadataOutputObjectsDelegate`