export default class Parent extends Component { render() { return ( <View> <Child text={'こんにちは'}> </View> ); } } export default class Child extends Component { render() { text = this.props.text; return ( <View> <Text>{text}</Text> </View> ); } } export default class Parent extends Component { constructor(props) { super(props); this.state = { text: 'ボタンを押して', }; } updateParentState(_text) { this.se
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