When I turn on the flash in the dark and then do color sampling, it can only collect black

[sjl872964789]

Describe the bug
I found that when I put the phone on the table and turn on the flash before sampling the color, I can only collect black

Context

• Device: [galaxy a6s]
• OS version: [Android 8.1.0]
• App version: [0.0.7]

How to reproduce
Steps to reproduce the behavior:

1. Install CameraColorPicker and open
2. Click the sampling button in the lower right corner
3. put the phone on the table
4. Turn on the flashlight
5. Sampling color

Expected behavior
The color should be sampled as normally as when the flashlight is not on.

Screenshots
Recorded video see attachment (This is a comparison video. The first half is when the flashlight is not on, and the second half is when the flashlight is on)
20191218152301.zip