import React, {useState} from 'react';
import {TextInput} from 'react-native';
import Icon from 'react-native-vector-icons/FontAwesome5';

const [hidePass, setHidePass] = useState(true);
    
    <TextInput
      placeholder="Password"
      secureTextEntry={hidePass ? true : false}>
       <Icon
          name={hidePass ? 'eye-slash' : 'eye'}
          onPress={() => setHidePass(!hidePass)} />
    <TextInput/>

一种方法是设置一个状态变量，比如showPassword，并在复选框被选中时切换它。

import React, { Component } from 'react';
import {
  AppRegistry,
  Text,
  View, 
  TextInput,
  Switch
} from 'react-native';

export default class DemoProject extends Component {
  constructor(props) {
    super(props);
    this.toggleSwitch = this.toggleSwitch.bind(this);
    this.state = {
      showPassword: true,
    }
  }

  toggleSwitch() {
    this.setState({ showPassword: !this.state.showPassword });
  }

  render() {
    return (
      <View>
        <TextInput
          placeholderTextColor="gray"
          placeholder="Password"
          secureTextEntry={this.state.showPassword}
          onChangeText={(password) => this.setState({ password })}
        />
        <Switch
          onValueChange={this.toggleSwitch}
          value={!this.state.showPassword}
        /> 
        <Text>Show</Text>
      </View>
    )
  }
}

AppRegistry.registerComponent('DemoProject', () => DemoProject);

注意：如果您设置了密码prop，则此操作无效！！！

因此，只需使用常规的TextInput并利用secureTextEntry属性。

这是我的做法

const LoginScreen = props => {
  const [icon, setIcon] = useState("eye-off")
  const [hidePassword, setHidePassword] = useState(true)

  _changeIcon = () => {
    icon !== "eye-off"
      ? (setIcon("eye-off"), setHidePassword(false))
      : (setIcon("eye"), setHidePassword(true))
  }

我对textInput使用了本机基

<Input
              secureTextEntry={hidePassword}
              placeholder="Password"
              placeholderTextColor={palette.gray}
            />
            <Icon name={icon} size={20} onPress={() => _changeIcon()} />

这将更改单击时的secureTextEntry

如果我说错了，请纠正我，你是在问如何创建一个复选框吗？如果是这样，你有两个路线，要么使用网络上众多复选框之一的第三方库，要么你可以自己创建一个。
操作步骤：
1.下载一个图标库，如https://github.com/oblador/react-native-vector-icons，这样你就可以使用enter link description here中的两个材质设计图标，如checkbox-blank-outline和checkbox-marked，以模拟单击和未单击
1.使用这两个新图标，只需创建一个新的组件，它具有您想要的任何功能，并以您想要的方式处理所有状态。
基本实施：
1.具有控制是否选中的状态
1.使用onPress函数处理两种状态并触发相应的属性

// the on press function
onPress = () => {
  if (this.sate.checked) {
    this.props.checked();
  } else {
    this.props.unChecked();
  }
}

// the rendered component
<Icon name={this.state.checked ? "checkbox-marked" : "checkbox-blank-outline" onPress={this.onPress}/>

这就是我简单方法，
我复选框和密码组件，

<input style={ inputUname } type={this.state.type} placeholder="Password" value={ this.state.password } onChange={this.handlePassword}/>
<Checkbox defaultChecked={false} onSelection={this.showPassword} value="false" name="Checkbox" label="Show password"/>

我州，

this.state = {
     type: 'input'
}

下面是我“显示密码"事件，

showPassword(e){
    this.setState( { showpassword: !this.state.showpassword }) // this is to change checkbox state
    this.setState( { type: this.state.type === 'password' ? 'text' : 'password' }) // this is to change input box type text/password change
}

enter image description here

const [password, setPassword] = useState("")
    const [passwordVisible, setPasswordVisible] = useState(true)


<TextInput
    mode='outlined'
    style={{ flex: 1, marginHorizontal: 20, marginTop: 30 }}
    autoCapitalize="none"
    returnKeyType="next"
    label=' Password '
    keyboardType="default"
    underlineColorAndroid={'rgba(0,0,0,0)'}
    right={<TextInput.Icon color={colors.white} name={passwordVisible ? "eye" : "eye-off"} onPress={onPressEyeButton} />}
    text='white'
    maxLength={50}
    onChangeText={(text) => { setPassword(text) }}
    value={password}
    defaultValue={password}
    theme={styles.textInputOutlineStyle}
    secureTextEntry={passwordVisible}
    />

 textInputOutlineStyle: {
    colors: {
        placeholder: colors.white,
        text: colors.white, 
        primary: colors.white,
        underlineColor: 'transparent',
        background: '#0f1a2b'
    }
},

[1]: https://i.stack.imgur.com/C7ist.png

第一步：创建一个useState钩子来存储password和secureTextEntry的初始值：

const [data, setData] = useState({
  password: '',
  isSecureTextEntry: true,
});

步骤2：根据条件更新状态：

<View>
  <TextInput
    style={styles.textInput}
    placeholder="Enter Password"
    secureTextEntry={data.isSecureTextEntry ? true : false}
    onChangeText={data => {
      setData({
        password: data,
        //OR
        /*
          //Array destructuring operator to get the existing state i.e
          ...data
        */
        //and then assign the changes
        
        isSecureTextEntry: !data.isSecureTextEntry,
      });
    }}></TextInput>
  <TouchableOpacity
    onPress={() => {
      setData({
        //...data,
        isSecureTextEntry: !data.isSecureTextEntry,
      });
    }}>
    <FontAwesome
      name={data.isSecureTextEntry ? 'eye-slash' : 'eye'}
      color="gray"
      size={25}
      paddingHorizontal="12%"
    />
  </TouchableOpacity>
</View>

<View>
  <Input
    style={styles.input}
    onChangeText={onChangeData}
    multiline={false}
    secureTextEntry={!showPassword}
    textContentType={"password"}
    value={data.password}
    placeholder="Password"
  />

  <TouchableHighlight
    style={{
      textAlign: "right",
      position: "absolute",
      right: 20,
      bottom: 22,
      zIndex: 99999999,
    }}
    onPress={() => setShowPassword(!showPassword)}
  >
    <>
      {showPassword && (
        <Ionicons name="eye-outline" size={22} color="#898A8D" />
      )}
      {!showPassword && (
        <Ionicons name="eye-off-outline" size={22} color="#898A8D" />
      )}
    </>
  </TouchableHighlight>
</View>;