AndroidUSB通讯问题
创始人
2024-08-22 00:00:22
0

我们可以通过代码实现以下步骤来解决Android USB通讯问题:

  1. 添加权限申请

在AndroidManifest.xml文件中添加以下权限:



  1. 查找USB设备

在代码中使用UsbManager来查找与USB设备的连接状态,示例代码如下:

UsbManager usbManager = (UsbManager) getSystemService(Context.USB_SERVICE);
HashMap deviceList = usbManager.getDeviceList();
Iterator deviceIterator = deviceList.values().iterator();

while (deviceIterator.hasNext()) {
    UsbDevice device = deviceIterator.next();
    // Do something with the device
}
  1. 发送和接收数据

使用UsbDeviceConnection连接到设备并发送和接收数据,示例代码如下:

UsbDeviceConnection connection = usbManager.openDevice(device);
if (connection != null) {
    // Use the deviceConnection to communicate with the device.
    UsbEndpoint inEndpoint = device.getInterface(0).getEndpoint(0);
    UsbEndpoint outEndpoint = device.getInterface(0).getEndpoint(1);

    connection.claimInterface(device.getInterface(0), true);

    byte[] dataToSend = "Hello, USB device!".getBytes();
    int sentBytes = connection.bulkTransfer(outEndpoint, dataToSend, dataToSend.length, 5000);

    if (sentBytes < 0) {
        // Handle error
    } else {
        byte[] receivedData = new byte[4096];
        int receivedBytes = connection.bulkTransfer(inEndpoint, receivedData, receivedData.length, 5000);

        if (receivedBytes < 0) {
            // Handle error
        } else {
            String receivedMessage = new String(receivedData, 0, receivedBytes);
            // Do something with the received data
        }
    }

    connection.releaseInterface(device.getInterface(0));
    connection.close();
}

相关内容

热门资讯

透视线上!wepokerplu... 透视线上!wepokerplus脚本,wepoker脚本(透视)实用技巧(有挂辅助)wepokerp...
透视美元局!wepoker黑侠... 透视美元局!wepoker黑侠破解,德州圈脚本,德州论坛(有挂攻略);1、这是跨平台的wepoker...
透视透视挂!wepoker手机... 透视透视挂!wepoker手机助手,wepoker透视底牌脚本(透视)微扑克教程(有挂介绍)1、在w...
透视好友!we poker游戏... 透视好友!we poker游戏下,hhpoker有后台操作吗,系统教程(有挂方法)1、hhpoker...
透视挂!wpk德州局透视,购买... 透视挂!wpk德州局透视,购买的wpk辅助在哪里下载,透明教程(有挂秘籍)购买的wpk辅助在哪里下载...
透视软件!wepoker有辅助... 透视软件!wepoker有辅助吗,wepoker底牌透视(透视)2025版教程(有挂解密)1.wep...
透视好友房!wpk辅助器,红龙... 透视好友房!wpk辅助器,红龙poker辅助,可靠技巧(有挂技巧)1、全新机制【红龙poker辅助软...
透视最新!wepoker私人局... 透视最新!wepoker私人局透视方法,wepoker手机插件(透视)解密教程(有挂教程)1、wep...
透视模拟器!德州hhpoker... 透视模拟器!德州hhpoker脚本,xpoker辅助神器,总结教程(有挂攻略);德州hhpoker脚...
透视实锤!wepoker免费透... 透视实锤!wepoker免费透视,有没有人wepoker(透视)透明挂教程(有挂揭秘);1)wepo...