How to pass data between react native screens?

Question

Hey I am new to react native. So basically I have a stack navigator with two screen option: Screen 1 (Default) and Screen2. I already set up a button so that when pressed it will take me to Screen 2. So in Screen1 I have an array displayed as scrollview component. Now when i press the button to go to screen2 I want to pass some of the array values to that screen2 component. What is the best way to do it? Thank you :)

I am really new so my attempts are kinda dumb. I tried importing the Screen1 component and calling the array values via this.state but no access.

Answer 1

The easiest way to pass the data is when you are navigating. To do that it is better that you put your array in a state an then use the following method:

onPress=()=>{
     this.props.navigation.navigate('Screen2', {
          yourArray: this.state.yourArray, });
      }
}

Then in the next screen(Screen2) you can find the array(your data) in the props.So in your constructor in scrren2 you can find the data here:

  constructor(props) {
    super(props);

    var params = props.navigation.state.params.yourArray;

}

Also to come back to your previous screen without touching your states you can use this code in your back button:

  const { goBack } = this.props.navigation;
      goBack();

Answer 2

To pass data from Screen1 to Screen2. Here we're storing the array in a state.

onPress={() => this.props.navigation.navigate('Screen2', {array: this.state.array})}

To get the data from Screen1 in Screen2

this.props.route.params.array

The source of this response is official documentation. I have tried it as well because the above solution didn't work for me. For more information you can go to this React Navigation Docs.