my Data.builder() method putStringArray() takes parameter as key : String and value : Array
how do I convert my ArrayList into Array?
fun createInputData(dataItems : ArrayList<String>) : Data
{
return Data.Builder()
.putStringArray("dataItems",dataItems)
.build()
}
the above code doesn't work.
dataItems.toTypedArray() should do the trick
Please check the below method:-
Convert To Array:
fun main(args: Array<String>) {
// an arraylist of vowels
val vowels_list: List<String> = listOf("a", "e", "i", "o", "u")
// converting arraylist to array
val vowels_array: Array<String> = vowels_list.toTypedArray()
// printing elements of the array
vowels_array.forEach { System.out.print(it) }
}
Convert To List:
fun main(args: Array<String>) {
// vowels array
val vowels_array: Array<String> = arrayOf("a", "e", "i", "o", "u")
// converting array to array list
val vowels_list: List<String> = vowels_array.toList()
// printing elements of the array list
vowels_list.forEach { System.out.print(it) }
}
.toList()extention method forArray