How do/ can I print an arrays contents into a textView in Android Studios Kotlin-CodePudding

lets say I'm making a simple dnd dice roller (cause I am), I get results and I turn it into an array. Now I want to print the results of the array into a textView that would say: randNumResultsDisplay.text = "Rolled " then it would spit out all results in the array, in order that they were put in.

CodePudding user response：

I'm not entirely sure where you are stuck here, but if you want to convert an array into a String, one option is to use the java.utils.Arrays class:

val myArray = arrayOf(1, 2, 3)
val contents = Arrays.toString(myArray)
println(contents) // prints "[1, 2, 3]"

So to inject that in your text view as you suggested:

randNumResultsDisplay.text = "Rolled ${Arrays.toString(yourValuesArray)}"

That being said, you would get it for free if you used List instead of Array (which is very much advised):

randNumResultsDisplay.text = "Rolled $yourList"

Another option as pointed out in the comments is the joinToString method, which works on both arrays and lists and allows you to customize the formatting:

println("Rolled: ${myArray.joinToString()}")
// Rolled 1, 2, 3

println("Rolled: ${myArray.joinToString(prefix = "[", postfix = "]")}")
// Rolled [1, 2, 3]

println("Rolled: ${myArray.joinToString(separator = "|")}")
// Rolled 1|2|3