移动端输入框比较靠页面下部,输入时键盘会遮挡input输入框,处理方法.

Android:input 输入框比较靠页面下部,输入时键盘会遮挡input输入框,处理方法.

使用系统自带键盘时,只安卓会遮盖输入框,原因: 页面高度由'视口高度'变成了'视口高度 - 键盘高度'.

使用antd-mobile money自带键盘时,安卓和iOS都会遮盖输入框.

解决方法:

 1. input聚焦时,页面外框设置margin-bottom: 200px(键盘的高度),//使用系统自带键盘时不需要设置此项

 2.计算可以使输入框进入可视区的scrollTop值,

 3.设置容器scrollTop值让输入框进入可视区.

import React, { FC, useEffect, useState, useRef } from 'react';
import { InputItem as AntdInputItem } from 'antd-mobile';const InputComponent: FC<any> = (props) => {const [amountInput, setAmountInput] = useState<number | undefined>(undefined);const [isFocus, setIsFocus] = useState<boolean>(false);// const windowRef = useRef<any>();useEffect(() => {if(props.gasId && props.oilNumber !== undefined) {getAmounts();// 记录初始窗口高度// windowRef.current = {//   outerHeight: window.outerHeight,//   innerHeight: window.innerHeight,//   topN: Math.floor(120/667*window.innerHeight) || 100// };// console.log('windowRef.current',windowRef.current); // window.addEventListener('resize', windowResize); // 监听安卓手动关闭系统键盘操作}// return () => {//   window.removeEventListener('resize', windowResize);// }; }, [props.gasId, props.oilNumber]);// const windowResize = (e) => {//   console.log('resize .outerHeight .innerHeight', e.target.outerHeight, e.target.innerHeight);// 	// 监听安卓手动关闭系统键盘操作//   if(e.target.outerHeight < windowRef.current?.outerHeight || e.target.innerHeight < windowRef.current?.innerHeight) {//     setContainerScrolltop();//   }// }; const setContainerScrolltop = () => {//使用系统自带键盘时,只需设置安卓的即可//const u = navigator.userAgent;//const isAndroid = u.indexOf('Android') > -1 || u.indexOf('Adr') > -1; //android终端//if(isAndroid) { // 使用antd-mobile InputItem['money']的键盘时,安卓和iOS都需要设置scrollTopconst container = document.querySelector('#container');//设置了overflow-y:auto;的外容器const inputContent = document.querySelector('#inputContent');//input元素(由于antd-mobile InputItem不能设置id,所以加了个外框)const wrapOffsetTop = container?.offsetTop; // 容器到页面顶部的距离const inputOffsetTop = inputContent?.offsetTop; // input框到页面顶部的距离const sTop = inputOffsetTop - wrapOffsetTop; //input框到容器顶部的距离,滚动距离设置为此值,即可使input刚好出现在容器顶部console.log('sTop', sTop);// 使用 antd-mobile money 自带的键盘时,安卓,iOS都需要滑动document.querySelector('#refuelDetailContainer')?.scrollTo(0, sTop);console.log('滑出高度',container?.scrollTop);// } };const inputOnFocus = () => {setIsFocus(true);setTimeout(() => {setContainerScrolltop();}, 300);};const inputOnBlur = () => {setIsFocus(false);console.log('blur');};const inputChange = (val) => {const val = value;// 只能输入整数或2位小数const isMatch = val.match(/^(\d{0,12}|0)((\.{0,1}\d{0,2})?)$/);if(isMatch) {console.log('test true');}else {return false;}if(!String(val).length){setAmountInput(undefined);return false;}setAmountInput(val);}return (<div id="container" className={classnames(styles.container, isFocus ? styles.containerMargin : '')}><div style={{width: '100%', height: '500px', background: 'lightblue'}}></div><div  id="inputContent"><AntdInputItemtype={'money'}placeholder=""value={amountInput}extra={'金额'}maxLength={15}onChange={inputChange}onFocus={inputOnFocus}onBlur={inputOnBlur}autoAdjustHeight>{amountInput !== undefined ? '¥' : ''}</AntdInputItem></div></div>);	
}
export default InputComponent;.containerMargin {margin-bottom: 200px;
}