我应该如何在 AsyncTask 中实现 UDP？ [复制]

Question

我正在通过 UDP 协议发送一些数据包，但应用程序在 UDP 类的这一部分（如下所示）因 NetworkOnMainThreadException 错误而崩溃：

client_socket.send(send_packet);

通过搜索错误，我发现在这种情况下应该使用 AsyncTask（我对此不确定，任何想法）。那么我怎样才能在这段代码中实现 AsynkTask 以解决错误呢？下面是我的 UDP 类：

public class CheckIP {

    private String CheckState;
    private String IP;

    //UDP IP Seraching
    private byte[] send_data = new byte[1024];
    private byte[] receiveData = new byte[1024];

    public CheckIP(final String BN, final Context context) throws IOException {

        DatagramSocket client_socket = new DatagramSocket(2222);
        InetAddress IPAddress = InetAddress.getByName("255.255.255.255");

        String str = String.valueOf(BN.charAt(7) + BN.charAt(5) + BN.charAt(8) + BN.charAt(3));
        send_data = str.getBytes();

        DatagramPacket send_packet = new DatagramPacket(send_data, str.length(), IPAddress, 2222);
        client_socket.send(send_packet);

        DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
        client_socket.receive(receivePacket);

        CheckState = "true";
        IP = receivePacket.getAddress().toString();
     }

    public String getIP() {
        return IP;
    }

    public String getCheckState() {
        return CheckState;
    }
}

以及我 home.class 中的相关代码：

additembtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(final View v) {
                  try {
                        Buildnumber = "123456789";
                        CheckIP checkIP = new CheckIP(Buildnumber,home.this);
                        if (checkIP.getCheckState().equals("true")){
                            //show Toast
                        }else{
                            //show Toast
                        }

                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
        });

Answer 1

创建另一个异步任务类

 private class UDPTask extends AsyncTask<URL, Integer, CheckIP> 
 {
 protected CheckIPdoInBackground(URL... urls) {

      Buildnumber = "123456789";
      CheckIP checkIP = null;
        try {
            checkIP = new CheckIP(Buildnumber, home.this);
        } catch (IOException e) {
            e.printStackTrace();
        }

     return checkIP;
 }

 protected void onProgressUpdate(Integer... progress) {
 }

 protected void onPostExecute(CheckIP checkIP) {

   if (checkIP.getCheckState().equals("true")){
                        //show Toast
                    }else{
                        //show Toast
                    }
 }
 }

然后使用此代码在点击时调用它：

new UDPTask().execute();