statedemo.java

class Button extends Component {
   state = {
      text: 'Failure'
   }
  
   updateButtonText = () ⇒ this.setState({ text: 'Success' })
     
   render() {
      return (
         <View>
            <Text onPress = {this.updateButtonText}>
               {this.state.text}
            </Text>
         </View>
      );
   }
}