反应本机串口

Question

我在使用 React Native 的 Android 上使用 USB 串口时遇到问题。 这是我的 App.jsx 代码：

import React, { useEffect } from 'react';
import { View, Text } from 'react-native';
import SerialPort from 'react-native-serialport';

const App = () => {
  useEffect(() => {

    SerialPort.read((data) => {
      console.log('Received data:', data);
    });

    return () => {
      SerialPort.close();
    };
  }, []);

  return (
    <View>
      <Text>Serial Reader</Text>
    </View>
  );
};

export default App;

如果我在 Android 上运行它会显示错误

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':tasks'.
> Could not create task ':react-native-usb-serialport:compileDebugJavaWithJavac'.
   > In order to compile Java 9+ source, please set compileSdkVersion to 30 or above

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 10s

我尝试了很多串口包，但没有发现任何有用的东西

Answer 1

在您的项目中，nodemodules->react-native-serialport-> android-> build.gradle 文件将compileSdkVersion更改为30..默认为28或29..对我有用