传值的几种方式

StackNavigator

从A跳转到B

// A
this.props.navigation.navigate('B',{name: 'name', value: 'value'})

// B
let params = this.props.navigation.state.params
let name = params.name
let value = params. value

父组件A给子组件B传值

// A
<B
    name=this.state.name
/>

// B

<Input name=this.props.name />

A->B->C->D, D 完成了某个操作，业务逻辑上要刷新A界面

// A
import {
    DeviceEventEmitter,
} from 'react-native';

componentDidMount() {
	// 注册监听，接收通知
	this.readEventListener = DeviceEventEmitter.addListener('read', (somePassedValue)=>{
            // do your things
        })
}

componentWillUnmount() {
        this.readEventListener && this.readEventListener.remove()
}

// D
import {
    DeviceEventEmitter,
} from 'react-native';

onReadBtnPress() {
	// 发送通知
	DeviceEventEmitter.emit('read', true)
}