The lock icon will not exist stably after selecting "App protected/pinned"

[sjl872964789]

Describe the bug
The lock button will not appear immediately after selecting "App protected/pinned", and the button will disappear after rotating the screen

To Reproduce
Steps to reproduce the behavior:

1. Install and open APhotoManager
2. Click on the three points in the upper right corner
3. Click "More ..."
4. Click "App protected/pinned"
5. Allow the screen to be fixed according to the prompt of the phone
6. Notice that the lock icon does not appear
7. Click on the three points in the upper right corner
8. The lock icon appeared
9. Rotate the screen
10. The lock icon disappeared again

Expected behavior
The screen lock icon should display normally

Smartphone (please complete the following information):

• Android version : Android 8.1.0
• A Photo Manager Version : 0.8.3.200315

Additional context