How to create a sample with customized UI/UX and add some codes to activities/fragments?
@HosseinKurd welcome to the community!
You may want to start here:
Is it possible to change the UI of the confrance page?
Can I have some changes in the conference page’s UI and functionality in Android (Kotlin/Java)?
I don’t see why not. You can check out all the code and modify things to meet your needs but too much change may make upgrading to future releases trickier. You need to also consider “maintenance” that as part of your project.
But I can not modify the default Jisti android source
For example :
There is a Settings page in my app that allows users to start a video conference with or without IM!