ReactNative短信验证码倒计时控件的实现代码

{Component } from 'react'; import { StyleSheet,Text,View,Image,TexTinput,TouchableHighlight,StatusBar,Alert,AppRegistry } from 'react-native'; import LinkRow from '../components/LinkRow'; import cStyles from '../styles/CommonStyle';

import axios from 'axios';

class MyCountTime extends Component {
constructor(props) {
super(props);
let timeLeft = this.props.timeLeft > 0 ? this.props.timeLeft : 5;
let width = this.props.width || 100;
let height = this.props.height || 50;
let color = this.props.color || '#42A5F5';
let fontSize = this.props.fontSize || 30;
let fontWeight = this.props.fontWeight || '600';
let borderColor = this.props.borderColor || '#42A5F5';
let borderWidth = this.props.borderWidth || 1;
let borderRadius = this.props.borderRadius || 4;
let BACkgroundColor = this.props.BACkgroundColor || '#42A5F5';
let begin = 0;
let press = this.props.press;

this.afterEnd = this.props.afterEnd || this._afterEnd;
this.style = this.props.style;

this.state = {
  timeLeft: timeLeft,begin: begin
};
this.countTextStyle = {
  textAlign: 'center',color: '#42A5F5',fontSize: fontSize,fontWeight: fontWeight

};
this.countViewStyle = {
  BACkgroundColor: BACkgroundColor,alignItems: 'center',borderColor: borderColor,borderWidth: borderWidth,borderRadius: borderRadius,width: width,height: height
}

}

countdownfn(timeLeft,callBACk,begin) {
if (timeLeft > 0) {
this.state.begin = 1;
console.log("===lin===>");

  let that = this;
  let interval = seTinterval(function () {
    if (that.state.timeLeft < 1) {
      clearInterval(interval);
      callBACk(that)
    } else {
      let @R_788_1@R_450_11226@6@lTime = that.state.timeLeft;
      that.setState({
        timeLeft: @R_788_1@R_450_11226@6@lTime - 1
      })
    }
  },1000)
}

}

_beginCountDown() {
if (this.state.begin === 1){
return;
}
let time = this.state.timeLeft;
console.log("===lin===> time " + timE);
let afterEnd = this.afterEnd;
let begin = this.state.begin;
console.log("===lin===> start " + begin);
this.countdownfn(time,afterEnd,begin)
}

_afterEnd(that) {
console.log('------------time over');
that.setState({
begin : 0,timeLeft : 5,})
}

componentDidMount() {

}

render() {
return (
<View style={{position:'absolute',top:13,right:43,height:30}}>
<Text
onPress={this._beginCountDown.bind(this)}
style={{Color: '#42A5F5',fontSize: 17,height:40,zIndex:999}}> { this.state.begin === 0 ? '点击获取验证码' : this.state.timeLeft}

  </View>
)

}
}