如何关闭DatagramSocket并重用它

Question

我有这个代码，我通过Android手机接收数据

 public void run() {
                try {
                    while(true) {
                        final String hey;
                        int server_port = 9875;
                        byte[] message = new byte[255];
                        DatagramPacket p = new DatagramPacket(message, message.length);
                        DatagramSocket s = new DatagramSocket(server_port);
                        s.receive(p);
                        hey = new String( message, 0 , p.getLength());
                        Log.d("MESSAGE: ", "Message is:" + hey);
                        s.close();

                        //codes for setting the Ultrasonic Sensor
                        if (hey.equals("Strainer is Empty")){
                            runOnUiThread(new Runnable() {
                                @Override
                                public void run() {
                                    Empty.setAlpha((float) 0.8);
                                    Full.setAlpha((float) 0.2);
                                    SFull.setAlpha((float) 0.2);
                                    AFull.setAlpha((float) 0.2);

                                }
                            });
                        }

                        if(hey.equals("Strainer is Full")){
                            runOnUiThread(new Runnable() {
                                @Override
                                public void run() {
                                    Full.setAlpha((float) 0.8);
                                    Empty.setAlpha((float)0.2);
                                    SFull.setAlpha((float) 0.2);
                                    AFull.setAlpha((float) 0.2);
                                }
                            });
                        }

问题是每当我回到我的主要活动并调用此活动时，错误似乎在数据报套接字上指出。我已阅读有关绑定地址但我不知道如何实现它

Answer 1

当我尝试以这种方式实现时，我解决了这个问题

DatagramSocket s = new DatagramSocket(null);
                        s.setReuseAddress(true);
                        s.setBroadcast(true);
                        s.bind(new InetSocketAddress(server_port));