BackgroundTimerExample.tsx

import {View, Button, StyleSheet, Text,TextInput} from 'react-native';
import React, {useState} from 'react';
import BackgroundTimer from "react-native-background-timer";
export function BackgroundTimerExample() {
  let [count, setCount] = useState(0);
  let [text, setText] = useState("");
  // BackgroundTimer延时
  let [delay, setDelay] = useState("1000");
  // setTimeout延时
  let [timeoutDelay, setTimeoutDelay] = useState("1000");
  // setInterval延时
  let [intervalDelay, setIntervalDelay] = useState("1000");
  let timeoutList:number[] = []
  let [intervalList, setIntervalList] = useState<number[]>([]);
 
  // runBackgroundTimer
  function onPressStart(){
    setText("开启定时器...")
    BackgroundTimer.runBackgroundTimer(()=>{
      setCount(count+=1)
    },parseInt(delay))
  }
  function onPressStop(){
    setText("结束定时器")
    BackgroundTimer.stopBackgroundTimer()
  }

  // setTimeout
  function setTimeoutStart(){
    setText("开启定时器...")
    let timeoutId = BackgroundTimer.setTimeout(()=>{
      setCount(count+=1)
    },parseInt(timeoutDelay))
    timeoutList.push(timeoutId)
  }
  function setTimeoutStop(){
    setText("结束定时器")
    if(timeoutList.length>0){
      BackgroundTimer.clearTimeout(timeoutList[0])
      timeoutList.shift()
    }
  }

  // setInterval
  function setIntervalStart(){
    setText("开启定时器...")
    let intervalId = BackgroundTimer.setInterval(()=>{
      setCount(count+=1)
    },parseInt(intervalDelay))
    setIntervalList([...intervalList,intervalId])
  }
  function setIntervalStop(){
    setText("结束定时器")
    if(intervalList.length>0){
      BackgroundTimer.clearInterval(intervalList[0])
      intervalList.shift()
    }
  }
  function resetNumber(){
    setCount(0)
    setText("")
  }
  return (
    <View style={{flexDirection: 'column', flex: 1,backgroundColor:'white'}}>
      <View style={styles.container}>
        <View style={styles.viewStyle}>
          <Button
            onPress={onPressStart}
            title="runBackgroundTimer"
          />
          <TextInput
            style={{ height: 40, borderColor: 'gray', borderWidth: 1 }}
            placeholder="BackgroundTimer延时"
            onChangeText={(value)=>{setDelay(value)}}
            value={delay}
          />
        </View>
        <View style={[styles.viewStyle]}>
          <Button
            onPress={onPressStop}
            title="stopBackgroundTimer"
          />
        </View>
      </View>
      {/* --------------------------------------------setTimeout-------------------------------------------------- */}
      <View style={styles.container}>
        <View style={styles.viewStyle}>
          <Button
            onPress={setTimeoutStart}
            title="setTimeout"
          />
          <TextInput
            style={{ height: 40, borderColor: 'gray', borderWidth: 1 }}
            placeholder="setTimeout延时"
            onChangeText={(value)=>{setTimeoutDelay(value)}}
            value={timeoutDelay}
          />
        </View>
        <View style={[styles.viewStyle]}>
          <Button
            onPress={setTimeoutStop}
            title="clearTimeout"
          />
        </View>
      </View>
      {/* --------------------------------------------setInterval-------------------------------------------------- */}
      <View style={styles.container}>
        <View style={styles.viewStyle}>
          <Button
            onPress={setIntervalStart}
            title="setInterval"
          />
          <TextInput
            style={{ height: 40, borderColor: 'gray', borderWidth: 1 }}
            placeholder="setInterval延时"
            onChangeText={(value)=>{setIntervalDelay(value)}}
            value={intervalDelay}
          />
        </View>
        <View style={[styles.viewStyle]}>
          <Button
            onPress={setIntervalStop}
            title="clearInterval"
          />
        </View>
      </View>
      {/* -----------------------------------------------Reset----------------------------------------------------- */}
      <View style={[styles.viewStyle,styles.resetStyle]}>
        <Button
          onPress={resetNumber}
          title="Reset"
        />
      </View>
      <Text style={styles.textStyle}>{count}</Text>
      <Text style={styles.textStyle}>{text}</Text>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    borderColor: 'black',
    borderTopWidth: 0,
    borderBottomWidth: 5,
    borderLeftWidth: 0,
    borderRightWidth: 0,
    padding: 10,
  },
  resetStyle: {
    paddingTop: 10,
  },
  viewStyle:{
    marginBottom: 10,
  },
  textStyle: {
    fontSize: 30,
  },
});