startPreview
@UiThread
This method should be called on resuming the activity. It will reopen camera, restart focus and accelerometer management and prepare camera callbacks. Implementations should take care if multiple startPreview calls are issued to ignore all but first.
Parameters
context
Context object required to determine phone information.
factorySettings
Camera factory settings required to rebuild camera strategy.
cameraStartupCallback
Callback that will receive all events from camera thread while preview is being started