让用户在 React Native 中处于非活动状态 [英] get user inactivity in react native

问题描述

如果用户在 1 分钟内没有与应用交互，我想要显示一个图像.我尝试通过在所有元素上的所有用户事件(如 onPress onSwipe 等)上设置计时器来实现它.但处理这些是一个复杂的过程.然后我尝试使用 InteractionManager 但这也没有奏效.我想知道有什么方法可以知道是否发生了任何用户事件?

What I want is to display a Image if user does not interact with the app for 1 minute. I have tried implementing it by setting timers on all the user events like onPress onSwipe etc on all the elements. But handling those is a complex process. Then I tried out using InteractionManager but that also didn't work out. What I want to know is there any way I can get to know if any user event has occurred?

推荐答案

最后，我使用 PanResponder 做到了.它完美无缺.它需要按键、滑动和拖动.

Finally, I did it using PanResponder. And It works flawlessly. It takes key presses ans swipes and drags.

展会链接:https://snack.expo.io/Sy8ulr8B-

这是我的代码:

import React, { Component } from 'react';
import { Button, PanResponder, View, StyleSheet,TouchableOpacity, Text , Image} from 'react-native';


export default class App extends Component {
  state = {
    show : false
  };
  _panResponder = {};
  timer = 0;
  componentWillMount() {
    this._panResponder = PanResponder.create({

      onStartShouldSetPanResponder: () => {
        this.resetTimer()
        return true
      },
      onMoveShouldSetPanResponder: () => true,
      onStartShouldSetPanResponderCapture: () => { this.resetTimer() ; return false},
      onMoveShouldSetPanResponderCapture: () => false,
      onPanResponderTerminationRequest: () => true,
      onShouldBlockNativeResponder: () => false,
    });
    this.timer = setTimeout(()=>this.setState({show:true}),5000)
  }

  resetTimer(){
    clearTimeout(this.timer)
    if(this.state.show)
    this.setState({show:false})
    this.timer = setTimeout(()=>this.setState({show:true}),5000)
  }

  render() {
    return (
      <View
        style={styles.container}
        collapsable={false}
        {...this._panResponder.panHandlers}>

        {
          this.state.show ? <Text style={{fontSize:30}}>Timer Expired : 5sec</Text> : null
        }

        <TouchableOpacity>
          <Image style={{width: 300, height: 300}} source={{uri: 'https://facebook.github.io/react/img/logo_og.png'}} />
        </TouchableOpacity>

        <Button
          title="Here is a button for some reason"
          onPress={() => {}}  
        />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
    backgroundColor: '#ecf0f1',
  }
});

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