Merge pull request #2384 from JaxkDev/patch-1

changes/2381.bugfix.rst

@@ -0,0 +1 @@
+A crash observed on iOS devices when taking photographs has been resolved.

changes/2381.docs.rst

@@ -0,0 +1 @@
+The camera permission requirements on macOS apps were clarified.

docs/reference/api/hardware/camera.rst

@@ -56,7 +56,8 @@ Notes
   The permissions required are platform specific:
 
   * iOS: ``NSCameraUsageDescription`` must be defined in the app's ``Info.plist`` file.
-  * macOS: The ``com.apple.security.device.camera`` entitlement must be enabled.
+  * macOS: The ``com.apple.security.device.camera`` entitlement must be enabled, and
+    ``NSCameraUsageDescription`` must be defined in the app's ``Info.plist`` file.
   * Android: The ``android.permission.CAMERA`` permission must be declared.
 
 * The iOS simulator implements the iOS Camera APIs, but is not able to take photographs.

iOS/src/toga_iOS/hardware/camera.py

@@ -74,7 +74,8 @@ def __init__(self, interface):
             ):
                 self.native = iOS.UIImagePickerController.new()
                 self.native.sourceType = UIImagePickerControllerSourceTypeCamera
-                self.native.delegate = TogaImagePickerDelegate.new()
+                self.delegate_link = TogaImagePickerDelegate.new()
+                self.native.delegate = self.delegate_link
             else:
                 self.native = None
         else:  # pragma: no cover