在 react-native 中隐藏键盘 [英] Hide keyboard in react-native

问题描述

如果我点击文本输入，我希望能够点击其他地方以再次关闭键盘(虽然不是返回键).在我阅读的所有教程和博客文章中，我都没有找到任何与此相关的信息.

If I tap onto a textinput, I want to be able to tap somewhere else in order to dismiss the keyboard again (not the return key though). I haven't found the slightest piece of information concerning this in all the tutorials and blog posts that I read.

这个基本示例仍然不适用于模拟器中的 react-native 0.4.2.还不能在我的 iPhone 上试用.

This basic example is still not working for me with react-native 0.4.2 in the Simulator. Couldn't try it on my iPhone yet.

<View style={styles.container}>
  <Text style={styles.welcome}>
    Welcome to React Native!
  </Text>
  <Text style={styles.instructions}>
    To get started, edit index.ios.js
  </Text>
  <Text style={styles.instructions}>
    Press Cmd+R to reload,{'
'}
    Cmd+D or shake for dev menu
  </Text>
  <TextInput
    style={{height: 40, borderColor: 'gray', borderWidth: 1}}
    onEndEditing={this.clearFocus}
  />
</View>

推荐答案

如果你有 keyboardType='numeric'，键盘不关闭的问题会变得更严重，因为没有办法关闭它.

The problem with keyboard not dismissing gets more severe if you have keyboardType='numeric', as there is no way to dismiss it.

用 ScrollView 替换 View 不是正确的解决方案，就像您有多个 textInput 或 button 一样，在键盘启动时点击它们只会关闭键盘.

Replacing View with ScrollView is not a correct solution, as if you have multiple textInputs or buttons, tapping on them while the keyboard is up will only dismiss the keyboard.

正确的做法是用TouchableWithoutFeedback封装View，并调用Keyboard.dismiss()

Correct way is to encapsulate View with TouchableWithoutFeedback and calling Keyboard.dismiss()

您现在可以将 ScrollView 与 keyboardShouldPersistTaps='handled' 一起使用，仅在子项未处理点击时关闭键盘(即点击其他文本输入或按钮)

You can now use ScrollView with keyboardShouldPersistTaps='handled' to only dismiss the keyboard when the tap is not handled by the children (ie. tapping on other textInputs or buttons)

如果你有

<View style={{flex: 1}}>
    <TextInput keyboardType='numeric'/>
</View>

改成

<ScrollView contentContainerStyle={{flexGrow: 1}}
  keyboardShouldPersistTaps='handled'
>
  <TextInput keyboardType='numeric'/>
</ScrollView>

或

import {Keyboard} from 'react-native'

<TouchableWithoutFeedback onPress={Keyboard.dismiss} accessible={false}>
    <View style={{flex: 1}}>
        <TextInput keyboardType='numeric'/>
    </View>
</TouchableWithoutFeedback>

您还可以创建一个高阶组件来关闭键盘.

You can also create a Higher Order Component to dismiss the keyboard.

import React from 'react';
import { TouchableWithoutFeedback, Keyboard, View } from 'react-native';

const DismissKeyboardHOC = (Comp) => {
  return ({ children, ...props }) => (
    <TouchableWithoutFeedback onPress={Keyboard.dismiss} accessible={false}>
      <Comp {...props}>
        {children}
      </Comp>
    </TouchableWithoutFeedback>
  );
};
const DismissKeyboardView = DismissKeyboardHOC(View)

像这样简单地使用它

...
render() {
    <DismissKeyboardView>
        <TextInput keyboardType='numeric'/>
    </DismissKeyboardView>
}

注意:需要 accessible={false} 才能使输入表单继续可通过 VoiceOver 访问.视障人士会感谢你的！

NOTE: the accessible={false} is required to make the input form continue to be accessible through VoiceOver. Visually impaired people will thank you!

这篇关于在 react-native 中隐藏键盘的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！