我定义了两个TextInput字段如下:
<TextInput
style = {styles.titleInput}
returnKeyType = {"next"}
autoFocus = {true}
placeholder = "Title" />
<TextInput
style = {styles.descriptionInput}
multiline = {true}
maxLength = {200}
placeholder = "Description" />
但在按下键盘上的“next”按钮后，我的react-native应用程序并没有跳转到第二个TextInput字段。我怎样才能做到呢?
谢谢!
当前回答
使用react-native 0.45.1我还遇到了问题，试图在按下用户名TextInput的返回键后将焦点设置在密码TextInput上。
在尝试了这里的大多数顶级解决方案之后，我在github上找到了一个解决方案，满足了我的需求: https://github.com/shoutem/ui/issues/44#issuecomment-290724642
总结一下:
import React, { Component } from 'react';
import { TextInput as RNTextInput } from 'react-native';
export default class TextInput extends Component {
render() {
const { props } = this;
return (
<RNTextInput
{...props}
ref={(input) => props.inputRef && props.inputRef(input)}
/>
);
}
}
然后我这样使用它:
import React, {Component} from 'react';
import {
View,
} from 'react-native';
import TextInput from "../../components/TextInput";
class Login extends Component {
constructor(props) {
super(props);
this.passTextInput = null
}
render() {
return (
<View style={{flex:1}}>
<TextInput
style={{flex:1}}
placeholder="Username"
onSubmitEditing={(event) => {
this.passTextInput.focus()
}}
/>
<TextInput
style={{flex:1}}
placeholder="Password"
inputRef={(input) => {
this.passTextInput = input
}}
/>
</View>
)
}
}
其他回答
如果你正在使用NativeBase作为UI组件，你可以使用这个示例
<Item floatingLabel>
<Label>Title</Label>
<Input
returnKeyType = {"next"}
autoFocus = {true}
onSubmitEditing={(event) => {
this._inputDesc._root.focus();
}} />
</Item>
<Item floatingLabel>
<Label>Description</Label>
<Input
getRef={(c) => this._inputDesc = c}
multiline={true} style={{height: 100}} />
onSubmitEditing={(event) => { this._inputLink._root.focus(); }} />
</Item>
使用react-native 0.45.1我还遇到了问题，试图在按下用户名TextInput的返回键后将焦点设置在密码TextInput上。
在尝试了这里的大多数顶级解决方案之后，我在github上找到了一个解决方案，满足了我的需求: https://github.com/shoutem/ui/issues/44#issuecomment-290724642
总结一下:
import React, { Component } from 'react';
import { TextInput as RNTextInput } from 'react-native';
export default class TextInput extends Component {
render() {
const { props } = this;
return (
<RNTextInput
{...props}
ref={(input) => props.inputRef && props.inputRef(input)}
/>
);
}
}
然后我这样使用它:
import React, {Component} from 'react';
import {
View,
} from 'react-native';
import TextInput from "../../components/TextInput";
class Login extends Component {
constructor(props) {
super(props);
this.passTextInput = null
}
render() {
return (
<View style={{flex:1}}>
<TextInput
style={{flex:1}}
placeholder="Username"
onSubmitEditing={(event) => {
this.passTextInput.focus()
}}
/>
<TextInput
style={{flex:1}}
placeholder="Password"
inputRef={(input) => {
this.passTextInput = input
}}
/>
</View>
)
}
}
我就是这样做到的。下面的例子使用了React 16.3中引入的React. createref () API。
class Test extends React.Component {
constructor(props) {
super(props);
this.secondTextInputRef = React.createRef();
}
render() {
return(
<View>
<TextInput
placeholder = "FirstTextInput"
returnKeyType="next"
onSubmitEditing={() => { this.secondTextInputRef.current.focus(); }}
/>
<TextInput
ref={this.secondTextInputRef}
placeholder = "secondTextInput"
/>
</View>
);
}
}
我想这对你有帮助。
在React Native的GitHub问题上尝试这个解决方案。
https://github.com/facebook/react-native/pull/2149#issuecomment-129262565
你需要为TextInput组件使用ref道具。 然后你需要创建一个函数，该函数在onSubmitEditing道具上被调用，将焦点移动到第二个TextInput引用上。
var InputScreen = React.createClass({
_focusNextField(nextField) {
this.refs[nextField].focus()
},
render: function() {
return (
<View style={styles.container}>
<TextInput
ref='1'
style={styles.input}
placeholder='Normal'
returnKeyType='next'
blurOnSubmit={false}
onSubmitEditing={() => this._focusNextField('2')}
/>
<TextInput
ref='2'
style={styles.input}
keyboardType='email-address'
placeholder='Email Address'
returnKeyType='next'
blurOnSubmit={false}
onSubmitEditing={() => this._focusNextField('3')}
/>
<TextInput
ref='3'
style={styles.input}
keyboardType='url'
placeholder='URL'
returnKeyType='next'
blurOnSubmit={false}
onSubmitEditing={() => this._focusNextField('4')}
/>
<TextInput
ref='4'
style={styles.input}
keyboardType='numeric'
placeholder='Numeric'
blurOnSubmit={false}
onSubmitEditing={() => this._focusNextField('5')}
/>
<TextInput
ref='5'
style={styles.input}
keyboardType='numbers-and-punctuation'
placeholder='Numbers & Punctuation'
returnKeyType='done'
/>
</View>
);
}
});
import React, { useState, useEffect, useRef, } from 'react';
const OTP = (props) => {
const OTP = [];
const ref_input = [];
ref_input[0] = useRef();
ref_input[1] = useRef();
ref_input[2] = useRef();
ref_input[3] = useRef();
const focusNext = (text, index) => {
if (index < ref_input.length - 1 && text) {
ref_input[index + 1].current.focus();
}
if (index == ref_input.length - 1) {
ref_input[index].current.blur();
}
OTP[index] = text;
}
const focusPrev = (key, index) => {
if (key === "Backspace" && index !== 0) {
ref_input[index - 1].current.focus();
}
}
return (
<SafeAreaView>
<View>
<ScrollView contentInsetAdjustmentBehavior="automatic" showsVerticalScrollIndicator={false}>
<View style={loginScreenStyle.titleWrap}>
<Title style={loginScreenStyle.titleHeading}>Verify OTP</Title>
<Subheading style={loginScreenStyle.subTitle}>Enter the 4 digit code sent to your mobile number</Subheading>
</View>
<View style={loginScreenStyle.inputContainer}>
<TextInput
mode="flat"
selectionColor={Colors.primaryColor}
underlineColorAndroid="transparent"
textAlign='center'
maxLength={1}
keyboardType='numeric'
style={formScreenStyle.otpInputStyle}
autoFocus={true}
returnKeyType="next"
ref={ref_input[0]}
onChangeText={text => focusNext(text, 0)}
onKeyPress={e => focusPrev(e.nativeEvent.key, 0)}
/>
<TextInput
mode="flat"
selectionColor={Colors.primaryColor}
underlineColorAndroid="transparent"
textAlign='center'
maxLength={1}
keyboardType='numeric'
style={formScreenStyle.otpInputStyle}
ref={ref_input[1]}
onChangeText={text => focusNext(text, 1)}
onKeyPress={e => focusPrev(e.nativeEvent.key, 1)}
/>
<TextInput
mode="flat"
selectionColor={Colors.primaryColor}
underlineColorAndroid="transparent"
textAlign='center'
maxLength={1}
keyboardType='numeric'
style={formScreenStyle.otpInputStyle}
ref={ref_input[2]}
onChangeText={text => focusNext(text, 2)}
onKeyPress={e => focusPrev(e.nativeEvent.key, 2)}
/>
<TextInput
mode="flat"
selectionColor={Colors.primaryColor}
underlineColorAndroid="transparent"
textAlign='center'
maxLength={1}
keyboardType='numeric'
style={formScreenStyle.otpInputStyle}
ref={ref_input[3]}
onChangeText={text => focusNext(text, 3)}
onKeyPress={e => focusPrev(e.nativeEvent.key, 3)}
/>
</View>
</ScrollView>
</View>
</SafeAreaView >
)
}
export default OTP;
