Global Variable

AVCaptureDeviceSubjectAreaDidChangeNotification

Posted when the instance of AVCaptureDevice has detected a substantial change to the video subject area.

Declaration

NSString *const AVCaptureDeviceSubjectAreaDidChangeNotification;

Discussion

Clients may observe the AVCaptureDeviceSubjectAreaDidChangeNotification to know when an instance of AVCaptureDevice has detected a substantial change to the video subject area.

This notification is sent only if subjectAreaChangeMonitoringEnabled is YES.

See Also

Monitoring Subject Area Change

subjectAreaChangeMonitoringEnabled

Indicates whether the device should monitor the subject area for changes.