So i kinda have problem with being on time to school so i got an idea for this timer app thingy where it calculate how much time i have left before i need to start leaving then what time i will arrive using google map api so i kinda need a way to present the time my first idea was a esp32 display but tbh i don’t even know if the idea will work so app for now then i need a way to display the time so there this thing call NowbarMeter (https://github.com/realMoai/NowbarMeter/) where they reverse engineer the samsung private api for nowbar which is perfect for my use it allow me to display time in lock screen home screen so yea i spend around an hour trying to figure out how this work so mostly it just samsung whitelist some bundle id to use this api so we need to fake the bundle id in this case i also use com.kakao.taxi then we need to add a special metadata to manifest com.samsung.android.support.ongoing_activity then it like implementing android notification just with some custom property which you can see in NotificationHelper.kt below is how the notification will look