如何在 React Native 中关注下一个字段输入？

Question

I need focus the next field input in react native, in android platform. But the focus() function, not exists in android react native, only in IOS.

How make this ? I use react native with typescript.

Answer 1

The focus function works just fine.

<View style={{flexDirection: 'row'}}>
        <Text style={{flex: 1}}>Enter Name: </Text>
        <TextInput ref="name" onChangeText={(name) => this.setState({name})} style={{flex: 1}}
          onSubmitEditing={() => this.refs.age.focus()}/>
      </View>
      <View style={{flexDirection: 'row'}}>
        <Text style={{flex: 1}}>Enter Age: </Text>
        <TextInput ref="age" keyboardType="numeric" onChangeText={(age) => this.setState({age})} style={{flex: 1}}
          onSubmitEditing={() => this.refs.sport.focus()}/>
      </View>
      <View style={{flexDirection: 'row'}}>
        <Text style={{flex: 1}}>Enter Favourite Sport: </Text>
        <TextInput ref="sport" onChangeText={(sport) => this.setState({sport})} style={{flex: 1}}/>
      </View>

Hope this helps. This is for android.

Answer 2

You have to user ref on Inputs where you want to focus on:

<Input
   ref={(node) => { this.myInput = node }}
   value={this.state.myInput.toString()}
   onSubmitEditing={() => { this.myOtherInput.focus() }}/>
<Input
   ref={(node) => { this.myOtherInput = node }}
   value={this.state.myOtherInput.toString()}/>

You can see that when you submit the editing on the first input you will focus on the second one. you can use this.MY_CUSTOM_REF.focus() wherever you want.

Answer 3

This work for me:

<Input
  blurOnSubmit={false}
  returnKeyType="next"
  onSubmitEditing={() => {
    this.passwordInput.wrappedInstance.focus();
  }}
/>
<Input
  secureTextEntry
  ref={(input) => {
    this.passwordInput = input;
  }}
/>

Answer 4

I insert the function in my customize component.

public focus(){
 this.input.focus()
}

Answer 5

Have a look at this article, this might be handy react-native inputs

//Helper function   
focusNextField(nextField) {
    this.refs[nextField].focus();
}

<TextInput
    ref='1'
    style={styles.otpInputStyle}
    keyboardType='numeric'
    secureTextEntry
    value={this.props.otp1}
    maxLength={1}
    onChangeText={(num) => {
        this.props.otpCode1(num);  //action call
        if (num && num.length === 1) {
           this.focusNextField('2'); //function call. '2' ref to next input ref
         }
    }}
/>

Answer 6

import React, { useRef } from 'react';

...

export default function YourFuctionalComponent() {
    const input1 = useRef(null);
    const imput2 = useRef(null);
    const doSomething = () => {}

    return(
        <>
             <TextInput
                autoFocus
                ref={input1}
                onSubmitEditing={() => { imput2.current.focus(); }}
                returnKeyType="next"
             />
             <TextInput
                ref={input2}
                onSubmitEditing={() => doSomething()}
                returnKeyType="done"
             />
        </>
    );
}

https://i.stack.imgur.com/W6dvs.gif