react-navigation-is-focused-hoc

Welcome React Navigation user seeking focus 😀

This is a quick, ready to use solution using HOC to expose props.isFocused. No Redux needed

Installation

1. Install the latest version of react-navigation
2. Install the latest version of react-navigation-is-focused-hoc from npm

yarn add react-navigation-is-focused-hoc

or

npm install --save react-navigation-is-focused-hoc

Full Usage Example

To see more of the react-navigation-is-focused-hoc in action, you can check out the source in ExampleNavigation folder.

Usage

app.js

import React from 'react'
import { StackNavigator } from 'react-navigation'
import { updateFocus } from 'react-navigation-is-focused-hoc'

import MyScreenView from './screens/myScreenView'

// navigation
const AppNavigator = StackNavigator({
  MyScreenView: { screen: MyScreenView },
}, {
  initialRouteName: 'MyScreenView',
})

export default class App extends React.Component {

  render() {
    return (
      <AppNavigator
        onNavigationStateChange={(prevState, currentState) => {
          updateFocus(currentState)
        }}
      />
    )
  }
}

myScreenView.js

import React from 'react'
import {
  View,
  Text,
} from 'react-native'
import { withNavigationFocus } from 'react-navigation-is-focused-hoc'

class MyScreenView extends React.Component {

  render() {
    return (
      <View>
        {this.props.isFocused
          ? <Text>I am focused</Text>
          : <Text>I am not focused</Text>
        }
      </View>
    )
  }
}

// second argument is the route name specified during StackNavigator initialization.
// third argument is optional and is for defining your initial route
// ie: export default withNavigationFocus(MyScreenView, 'MyScreenView', true)
export default withNavigationFocus(MyScreenView, 'MyScreenView')

---

Thanks to Adam (@skevy), Mike (@grabbou), Satyajit (@satya164) and others for the react-navigation module