我试图检测当用户点击输入外，但感觉它只与onFocus工作，但它onBlur不做任何事情，这里是简单的代码

/* eslint-disable react-native/no-inline-styles */
import React, {useState} from 'react';
import {
  TouchableWithoutFeedback,
  TextInput,
  View,
  SafeAreaView,
} from 'react-native';

const TextInputTest = () => {
  const [isBorder, setBorder] = useState(false);
  return (
    <SafeAreaView
      style={{flex: 1, justifyContent: 'center', alignItems: 'center'}}>
      <View style={{borderWidth: isBorder ? 1 : 0}}>
        <TextInput
          placeholder="sometext"
          onFocus={() => setBorder(!isBorder)}
          onBlur={() => setBorder(!isBorder)}
        />
      </View>
    </SafeAreaView>
  );
};
export default TextInputTest;

我只能看到边界变黑，它再也不会空白了，发生了什么事，请帮助，非常感谢