在Textinput组件上使用onFocus和onBlur事件处理程序，当用户按下图标时，调用.blur()函数以从输入框中删除焦点。 下面是一个示例代码：

import React, { useState } from 'react';
import { View, TextInput, TouchableOpacity } from 'react-native';

const Example = () => {
  const [text, setText] = useState("");

  const blurTextInput = () => {
    textInputRef.current.blur();
  };

  const textInputRef = useRef(null);

  return(
    
       console.log("TextInput is focused")}
        onBlur={() => console.log("TextInput is blurred")}
      />
      
        Press here to blur TextInput
      
    
  );
}

export default Example;