Search Issue Tracker
Won't Fix
Votes
0
Found in
Issue ID
1337938
Regression
No
Photo Capture callbacks are lost when Unity pauses during photo capture
If unity is paused during a photo capture, script callbacks may be lost and never called even after Unity resumes.
To reproduce, use the attached project.
The script in the project will continuously taking photos so long as no callbacks are dropped. If a callback drops, then the script will not update it's IsTakingPicture bool and will stop taking photos. This usually happens when an app is backgrounded during the photo capture process.
Add comment
All about bugs
View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.
Latest issues
- Out-of-bounds memory access with multiple CanvasRenderers under a Canvas when using Mesh API
- Inspector tries to access file after it was deleted when the file was locked in Inspector window
- Changing Transform values in Search window Inspector loses focus while dragging and stopping mouse without releasing dragging action
- Saving changes on the dirty VFX Graph during the Play mode throws "The referenced script (Unknown) on this Behaviour is missing!" warnings
- VFX Graph Debug Info overlaps the "Initialize" block debug info by default
Resolution Note (2021.2.X):
There's a strange race-condition that prevents the StopPhotoModeAsync callback from firing when the app loses focus, primarily on HoloLens. Unfortunately, fixing this race-condition isn't trivial and changing the code paths will introduce significant regression risk for PhotCapture, KeywordRecognizer, and DictationRecognizer.
Instead, as a good practice, the app should automatically Dispose all media capture objects (video, speech, photo, etc.) whenever the app loses focus. For example:
private void OnApplicationFocus(bool focus)
{
if (!focus && _photoCaptureObject != null)
{
// Shutdown photo capture
_photoCaptureObject.Dispose();
_photoCaptureObject = null;
...
}
}