Length of list,select item index block in extensions

[HIFI_APPS]

how to use this block in extension code i get a YailList colors from users how to get length of it,
and also how to

use this block in extension code
listt is the colors list i get index is 3
so how to use

[Kumaraswamy]

Please explain properly.

[HIFI_APPS]

i get a list from user where user put colours in the list and give me now how can get length of the input or length of list,how can i select item 3 of the colour list provided

the user give me this list i get it by the code

@SimpleFunction(description = "")
    public void bgset(YailList colors) {

now how to get length of list,get item 3(which is yellow)

[Alpha2020]

@SimpleFunction(description = "")
  public Object bgset(YailList colors) {
  return (colors[0]);
}

The 0 number is the index number which start from 0.

This is select list item.

For length use-

@SimpleFunction(description = "")
  public int bgset(YailList colors) {
  return (colors.length);
}  

More information-
https://www.w3schools.com/java/java_arrays.asp

[HIFI_APPS]

ok i will try

[HIFI_APPS]

@Alpha2020

@SimpleFunction(description = "") public Object bgset(YailList colors) { return (colors[0]); }

dint work array required but yail list found is my compile error but
converting to array works

int[] array = new int[colors.size()];
     int index = 0;
     for(String e : colors.toStringArray()) {
         array[index] = Integer.parseInt(e);
         index++;
     }
int i;
     int size = array.length;
     for(i=0;i<size;i++){
     view.setBackgroundColor((int)array[i]);
     }

thanks i got help from this word

@Alpha2020

colors[0]

and error which says i need array

[Kumaraswamy]

@HIFI_APPS

dint work array required but yail list found is my compile error but

What error did you get? @Alpha2020's code is correct.

[HIFI_APPS]

i don't know the specific error but it said

@Alpha2020

YailList colors

could not be used in this method

@Alpha2020

colors[0]

only array can work like

@HIFI_APPS

(int)array[i]

where i converted list to array using

@HIFI_APPS

int array = new int[colors.size()]; int index = 0; for(String e : colors.toStringArray()) { array[index] = Integer.parseInt(e); index++; }

[Kumaraswamy]

@HIFI_APPS

could not be used in this method

@Alpha2020

colors[0]

Try to use list.get(index)

[Alpha2020]

@Kumaraswamy

Try to use list.get(index)

That is what is said

[AkshatRana]

If you want to get size of the list use:-

listname.size()

If you want to select list item with index then use this:-

listname.get( index );

Hope this will help