Hi, sorry to bothering you guys. Im new to kotlin and i really need a help. I want to add a reminder to my app. I want to create a button that will shown datepicker and timepicker on that red box. So when the user choose the date and time then the app will display the "notes" on notification. I've been working on this for 4month, following every tutorials and still got nothing. Really appreciate if someone could help me. I have attach the project in zip file.

This is a workspace about the Kotlin programming language. For your general android questions please check the channel description for more appropriate resources.

Im so sorry, it's because i really dont know about whats the problem is. my project is 100% kotlin language not a java language. Do i need to screenshot the fragment that have bug even it is so many? that why i provide a zip or you can see it on this link : https://github.com/PeterKingori/My-Car-Maintenance sorry im new with this. If someone know how to implement a simple alarmmanager/workmanager in this project please let me know.

Sure, your project might be in Kotlin. But your question is about how to show a notification to the user which has nothing to do with the Kotlin programming language.