34_inheritance.md

3.4 Inheritance

1.pass styles as props

class InheritanceStyle extends Component {
  render() {
    return (
      <View style={this.props.parentColor}>
      </View>
    );
  }
}

class Main extends Component {
  handleReady(str){
    console.log(str);
  }
  render() {
    return (
      <View style={styles.container}>
        <InheritanceStyle parentColor={styles.blue}/>
      </View>
    );
  }
}
const styles = StyleSheet.create({
  container: {
    flex: 1
  },
  blue: {
    flex: 1,
    backgroundColor: 'blue'
  }
});

2.concatenation styles

BaseStyles.js

import { StyleSheet,Dimensions } from 'react-native';
let winSize = Dimensions.get('window');
const BaseStyles = StyleSheet.create({
  text: {
    fontSize: 40/winSize.scale
  }
});
export default BaseStyles;

import BaseStyles from './BaseStyles';

class InheritanceStyle extends Component {
  render() {
    return (
      <View style={this.props.parentColor}>
        <Text style={[BaseStyles.text, styles.text]}> this is a long text </Text>
      </View>
    );
  }
}
const styles = StyleSheet.create({
  text:{
    color: '#ffffff'
  }
});