How to execute the same method continuously and return a value in each execution?-CodePudding

What I would like to do is make a method continually run in the background and, on each run, return a value. Also, I have a model and I would like to store the value returned by the method in this model so that I can use this value in another class. Is it possible to do this?

Method:

fun generatePair(): Pair<String?, String?> {

    val rand = Random.nextInt(0, 10)
    val num1: String? = "x$rand"
    val num2: String? = "y$rand"

    return Pair(num1, num2)
}

Model:

  data class PairData(
    val xData: Long,
    val yData: String
  )

I want to have the generatePair method running continuously and every time it runs, get a new Pair and store it in data class. After that, I want to get the Pair in other class. How is posible to do this? Maybe with a service?

CodePudding user response：

You could save the collection in a singleton arrayList somewhere in your code:

object accessibleVariables{
  val pairList = arrayListOf<PairData>()
}

Then you could do something like this:

fun loopMethod(){
  // Start a new thread to prevent blocking other code
  Thread{
    // You could change this to a variable, to stop the loop when you would like
    while(true){
      accessibleVariables.pairList.add( generatePair() )
    }  

  }.start()      
}