How to code a dynamic screensaver?

Code Xu dynamic screen saver method is as follows:

1, open the "System Settings" of the mobile phone.

2. Click "Apply Settings".

3. Click "Application Management".

4. Choose Alipay.

5. Open "Alipay" application shortcut permissions.

6. Open the "Alipay" homepage and click "Health Code".

7. Click the icon in the upper right corner of the "Health Code" interface.

8. Click Add to Desktop.