Question

When the user clicks a button, I am trying to fill an array with x random numbers (50,100,200...) and return them back to pass them to other class , my query is

1)How to call the random class

2)How to return the filled array from the random class to the onClick method.

 public void onClick(View v) {

 if(v.getId()==R.id.buttonone)
 {
 genrandom grandom =new genrandom();
 int[] arr=new int[50];

// this array will be used as a argument for other class

public class gen_random_number {

public void genrandom(int[] arr, int x) { 

Random randomGenerator = new Random();
  for (int idx = 1; idx <= x; ++idx){
       int randomInt = randomGenerator.nextInt(5000);
                                    }       
     }  
  }

Thanks in advance!

Answer 1

create an instance of gen_random_number and call getrandom() passing your array and x as parameters.

   public void onClick(View v) {
     if(v.getId()==R.id.buttonone)
     {
       genrandom grandom =new genrandom();
       int[] arr=new int[50];
       arr = new  gen_random_number().genrandom(arr, yourXvalue);
   }

make the return type of genrandom an int array.

public int[] genrandom(int[] arr, int x) { 

Random randomGenerator = new Random();
  for (int idx = 1; idx <= x; ++idx){
       int randomInt = randomGenerator.nextInt(5000);
          arr[idx] =randomInt;                        }       
     }  
     return arr;
  }