Question

我有一个Arduino将GPS坐标发送到Android应用程序：

  bt_port.println(lat);
  bt_port.print ('.');
  bt_port.println(lon);

在应用中接收：

    void beginListenForData()
{
    final Handler handler = new Handler();
    stopThread = false;
    buffer = new byte[1024];
    Thread thread  = new Thread(new Runnable()
    {
        public void run()
        {
            while(!Thread.currentThread().isInterrupted() && !stopThread)
            {
                try
                {
                    int byteCount = inputStream.available();
                    if(byteCount > 0)
                    {
                        byte[] rawBytes = new byte[byteCount];
                        inputStream.read(rawBytes);
                        final String emissorInput = new String(rawBytes,"UTF-8");
                        handler.post(new Runnable() {
                                    public void run()
                                    {
                                        emissorGPS.setVisibility(View.VISIBLE);

                                        emissorGPS.append(emissorInput);

                                        emissorGPS.postDelayed(new Runnable() {
                                            public void run() {
                                                emissorGPS.setVisibility(View.INVISIBLE);
                                                emissorGPS.setText("");
                                            }
                                        }, 1500);
                                    }
                                });

                    }
                }
                catch (IOException ex)
                {
                    stopThread = true;
                }
            }
        }
    });

    thread.start();
}

已经尝试过，应用程序崩溃了：

String[] test = emissorInput.split("\\.");
String part1 = test[0];
String part2 = test[1];

工作parcialy因为它只是删除“。”但不能拆分字符串

StringTokenizer tokens = new StringTokenizer(emissorInput, "\\.");
String nextToken = tokens.nextToken();

任何人都可以指导我从哪里开始！？

提前致谢。

祝你好运

Answer 1

假设您的String以Arduino的“lat.long”形式出现，您可以使用StringTokenizer，因为如果分割的字符串为null，则返回空字符串。

String inbound = "lat.long";
StringTokenizer st = new StringTokenizer(inbound, ".");
String lat = st.nextToken(); //this will contain "lat"
String helpDesk = st.nextToken(); //this will contain "long"

用“。”拆分2中的字符串。之间

1 个答案: