How to update array state in react native?

Question

I am trying to update only one element in an array state but i am not sure of how to do it.

State

constructor(props) {
    super(pro         


        

Answer 1

state

this.state = {
          barcodeArray:['']
        };

update array

var barcode_text='hi';
 this.setState({ barcodeArray:[...this.state.barcodeArray,barcode_text] })}