我正在使用该库的 1.1.0 版本浏览Android 开发人员https://developer.android.com/codelabs/camerax-getting-started#3上的 CameraX 教程。日志一开始看起来不错，但后来引发了 TimeoutException 并且相机预览保持黑色：
(omitted)
D/CameraStateRegistry: Recalculating open cameras:
Camera State
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Camera@f35a3d7[id=0] OPEN
Camera@e46a673[id=1] UNKNOWN
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Open count: 1 (Max allowed: 1)
D/CameraStateMachine: New public camera state CameraState{type=OPEN, error=null} from OPEN and null
D/CameraStateMachine: Publishing new public camera state CameraState{type=OPEN, error=null}
D/UseCaseAttachState: All use case: [androidx.camera.core.Preview-c7727ae2-d02c-4135-956c-a76c24deb02d40667318] for camera: 0
D/UseCaseAttachState: Active and attached use case: [androidx.camera.core.Preview-c7727ae2-d02c-4135-956c-a76c24deb02d40667318] for camera: 0
D/Camera2CameraImpl: {Camera@f35a3d7[id=0]} Transitioning camera internal state: OPENED --> OPENED
D/CameraStateMachine: New public camera state …