Android usb主机：异步中断传输

一个漂亮的noddy请求 – >回复的代码看起来像这样.你会想要构建不同的实际代码,但这给你需要发生什么的要点(我希望)

public void run() {
    int bufferMaxLength=mEndpointOut.getMaxPacketSize();
    ByteBuffer buffer = ByteBuffer.allocate(bufferMaxLength);
    Usbrequest request = new Usbrequest(); // create an URB
    request.initialize(mConnection,mEndpointOut);
    buffer.put(/* your payload here */;

    // queue the outbound request
    Boolean retval = request.queue(buffer,1); 
        if (mConnection.requestWait() == request) { 
             // wait for confirmation (request was sent)
             Usbrequest inrequest = new Usbrequest(); 
             // URB for the incoming data
             inrequest.initialize(mConnection,mEndpoinTin); 
             // the direction is Dictated by this initialisation to the incoming endpoint.
             if(inrequest.queue(buffer,bufferMaxLength) == truE){
                  mConnection.requestWait(); 
                  // wait for this request to be completed
                  // at this point buffer contains the data received
             }
        }
}

如果您实际上正在寻找一种以异步方式运行此IO的方式,而不会将线程绑定到其上,那么我认为您需要考虑使用DeviceConnection.getFilehandle()方法来返回一个标准文件句柄,理论上可以这样处理使用它就像是任何其他文件类型的资源.不过我会注意到我没有尝试过.

如果这两个都不解决问题,请修改问题,以澄清您正在努力寻找的例子.我希望这有帮助.