I have a Kotlin Code to show images during day & night (imageday.png & imagenight.png)
Here is the code:
private fun getBackgroundImageByTime(time: LocalTime): Int =
when (time.hour) {
in 6..18 -> R.drawable.imageday
else -> R.drawable.imagenight
}
Now I am trying to get the images loaded by days of the week at the above times.
My images are: monday_imageday, monday_imagenight, tuesday_imageday, tuesday_imagenight, etc…
How can I get these images loaded from drawable folder programatically depends on the day, today.
If today is Tuesday, it should load imageday and imagenight respectively.
I am struck here and someone please help.
If your minimun SDK is 26, you can use LocalDateTime.
val dateTime = LocalDateTime.now()
val dayOfWeek = dateTime.dayOfWeek
val hour = dateTime.hour
val image = when(dayOfWeek) {
DayOfWeek.MONDAY -> if (hour in 6..18) R.drawable.monday_imageday else R.drawable.monday_imagenight
DayOfWeek.TUESDAY -> if (hour in 6..18) R.drawable.tuesday_imageday else R.drawable.tuesday_imagenight
DayOfWeek.WEDNESDAY -> if (hour in 6..18) R.drawable.wednesday_imageday else R.drawable.wednesday_imagenight
DayOfWeek.THURSDAY -> if (hour in 6..18) R.drawable.thursday_imageday else R.drawable.thursday_imagenight
DayOfWeek.FRIDAY -> if (hour in 6..18) R.drawable.friday_imageday else R.drawable.friday_imagenight
DayOfWeek.SATURDAY -> if (hour in 6..18) R.drawable.saturday_imageday else R.drawable.saturday_imagenight
DayOfWeek.SUNDAY -> if (hour in 6..18) R.drawable.sunday_imageday else R.drawable.sunday_imagenight
}
If your minimum SDK is under 26, you can use Calendar for backward compatibility.
val calendar = Calendar.getInstance()
val dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK)
val hour = calendar.get(Calendar.HOUR_OF_DAY)
val image = when(dayOfWeek) {
1 -> if (hour in 6..18) R.drawable.monday_imageday else R.drawable.monday_imagenight
2 -> if (hour in 6..18) R.drawable.tuesday_imageday else R.drawable.tuesday_imagenight
3 -> if (hour in 6..18) R.drawable.wednesday_imageday else R.drawable.wednesday_imagenight
4 -> if (hour in 6..18) R.drawable.thursday_imageday else R.drawable.thursday_imagenight
5 -> if (hour in 6..18) R.drawable.friday_imageday else R.drawable.friday_imagenight
6 -> if (hour in 6..18) R.drawable.saturday_imageday else R.drawable.saturday_imagenight
7 -> if (hour in 6..18) R.drawable.sunday_imageday else R.drawable.sunday_imagenight
else -> throw IllegalStateException()
}
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