Switch between foreground / background video recording on the fly

[Tomáš Válek]

Hello all CameraX heads!

Is it possible to start foreground recording with preview -> minimize app -> recording will continue on the background without preview -> switch back to foreground recording with preview?

Thank you.

[Leo Huang]

Hi,

This is currently impossible by using Activity lifecyle since CameraX will stop camera stream and recording when lifecycle goes to STOP. We are planning to support pause/resume recording while lifecycle goes to STOP/START, but this maybe still different from what you want.

Tomáš Válek 在 2021年11月23日 星期二上午6:44:48 [UTC+8] 的信中寫道：

[Leo Huang]

There is a possible way by using foreground Service + LifecycleService, you can bind Preview and VideoCapture to the LifecycleService, then the recording will not stop when activity goes to background.

Leo Huang <leoh...@google.com> 於 2021年11月23日 週二 下午4:08寫道：

[Tomáš Válek]

I am using Foreground service + LifecycleService (extends LifecycleService), but I do not understand what do you mean: "bind Preview and VideoCapture to the LifecycleService"?

Dne úterý 23. listopadu 2021 v 10:36:13 UTC+1 uživatel leoh...@google.com napsal:

[Android CameraX Discussion Group]

Hi there,

Some of our team is out for the lunar new year, we should be able to get back to you in a couple of weeks. Thanks!

[Leo Huang]

Hi,

I mean use the API cameraProvider.bindToLifecycle(LifeCycleOwner, CameraSelector, UseCase...) to bind LifeCycleService (which is a LifeCycleOwner) and UseCases.

Android CameraX Discussion Group 在 2022年2月1日 星期二上午6:07:04 [UTC+8] 的信中寫道：