我稍后会更新(我必须上班),所以我会发布我所拥有的并将我的想法留给 cmets
import React, {
useState, useEffect, useRef,
} from 'react';
import {
View, StyleSheet, TextInput, Text, useWindowDimensions,
KeyboardAvoidingView, ScrollView
} from 'react-native';
const TextEditor = ({lineHeight=20}) => {
const { height, width } = useWindowDimensions()
// determine max number of TextInputs you can make
const maxLines = Math.floor(height/lineHeight);
const [ textLines, setTextLines ] = useState(Array(maxLines).fill(''));
return (
<KeyboardAvoidingView
style={styles.container}
behavior={"height"}
>
<ScrollView style={{height:height,width:'100%'}}>
{/*Make TextInputs to fill whole screen*/}
<View style={{justifyContent:'flex-end'}}>
{textLines.map((text,i)=>{
let style = [styles.textInput,{height:lineHeight}]
// if first line give it extra space to look like notebook paper
if(i ==0)
style.push({height:lineHeight*3,paddingTop:lineHeight*2})
return (
<>
<TextInput
style={style}
onChangeText={newVal=>{
textLines[i] = newVal
setTextLines(textLines)
}}
key={"textinput-"+i}
/>
</>
)
})}
</View>
</ScrollView>
</KeyboardAvoidingView>
)
}
const styles = StyleSheet.create({
container:{
flex:1,
// paddingTop:40
},
textInput:{
padding:0,
margin:0,
borderBottomColor:'lightblue',
borderBottomWidth:1,
width:'100%',
}
})
export default TextEditor
这就是我的想法:
- 将其包装在 ScrollView 中,如果最后一个 TextInput 处于焦点位置且已达到最大字符限制,则使用 onEndReached 属性呈现额外的 TextInput
- 将所有文本输入值存储在一个数组中