1.创建自定义CKTextInput.js 组件类
1 import React,{Component} from 'react';
2 import {
3 View,
4 TextInput,
5 StyleSheet,
6 Text
7 } from 'react-native';
8
9 export default class CKTextInput extends Component{
10 constructor(){
11 super();
12 this.state={
13 inputValue:''
14 }
15 }
16
17 render(){
18 return(
19 <View>
20 <TextInput
21 style={{
22 width:300,
23 height:40,
24 borderColor:'gray',
25 borderWidth:1,
26 marginLeft:10,
27 paddingLeft:10
28 }}
29 // clearButtonMode="always"//ios支持
30 keyboardType="number-pad"//数字键盘
31 placeholder="请输入用户名"
32 placeholderTextColor="red"
33 multiline={true}
34 onChangeText={(text)=>{this.setState({inputValue:text})}} //这里为了获取用户输入的信息
35 />
36 <Text>输入的内容:{this.state.inputValue}</Text>
37 </View>
38 )
39 }
40
2.在App.js中引用
/**
* Sample React Native App
* https://github.com/facebook/react-native
*
* @format
* @flow strict-local
*/
import React from 'react';
import {
SafeAreaView,
StyleSheet,
ScrollView,
View,
Text,
StatusBar,
} from 'react-native';
import {
Header,
LearnMoreLinks,
Colors,
DebugInstructions,
ReloadInstructions,
} from 'react-native/Libraries/NewAppScreen';
import CKTextInput from './components/CKTextInput';
const App: () => React$Node = () => {
return (
<>
<StatusBar barStyle="dark-content" />
<SafeAreaView style={styles.mainViewStyle}>
<CKTextInput/>
</SafeAreaView>
</>
);
};
const styles=StyleSheet.create({
mainViewStyle:{
flex:1,
backgroundColor:'#fff',
}
});
export default
3.结果如图