https://github.com/queeniecplusplus/react_batteryapp

https://github.com/queeniecplusplus/react_batteryapp

expo react-native

Last synced: 3 months ago
JSON representation

• Host: GitHub
• URL: https://github.com/queeniecplusplus/react_batteryapp
• Owner: QueenieCplusplus
• Created: 2020-07-20T10:57:15.000Z (about 6 years ago)
• Default Branch: master
• Last Pushed: 2023-01-26T22:04:28.000Z (over 3 years ago)
• Last Synced: 2025-02-24T04:44:29.412Z (over 1 year ago)
• Topics: expo, react-native
• Language: JavaScript
• Homepage: https://github.com/QueenieCplusplus/QuickGoThru#react--react-native
• Size: 1.59 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 13
• Metadata Files:
  • Readme: README.md

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README

          
# React_batteryApp

# CodeFile

    import * as React from 'react';

    // expo install expo-battery

    import * as Battery from 'expo-battery';

    import {Text, View } from 'react-native';

    export default class App extends React.Component {

      state = {

        batteryLevel: null,

      };

      componentDidMount() {

        this.subscribe();

      }

      componentWillUnmount() {

        this.unsubscribe();

      }

      async subscribe() {

        const batteryLevel = await Battery.getBatteryLevelAsync();

        this.setState({ batteryLevel });

        this.subscription = Battery.addBatteryLevelListener(({ batteryLevel }) => {

        

          this.setState({ batteryLevel });

          

          //console.log('batteryLevel changed!', batteryLevel);

          

        });

      }

      unsubscribe() {

        this.subscription && this.subscription.remove();

        this.subscription = null;

      }

      render() {

        return (

          

            Current Battery Level: {this.state.batteryLevel}

          

        );

      }

    }