Question

我已经编写了这个代码用于在端口6789上ping类c ip地址，当我点击一个名为PING的按钮时线程启动，它将检索所有打开端口6789的IP地址...但我需要的是每次刷新（重新ping），比方说5秒，并添加最近加入的ips（如果存在）并省略离开端口的ips。我调试并搜索了几个小时，但没有希望！

提前致谢：DD

Thread pingo = new Thread(new Runnable() {
            public void run() {

                if (readableNetmask.equals("255.255.255.0")) {

                    for (int i = 2; i <= 254; i++) {

                        String ip_address = readableIPAddress;
                        String oct1 = "", oct2 = "", oct3 = "", oct4 = "";

                        StringTokenizer stok = new StringTokenizer(
                                ip_address, ".");

                        while (stok.hasMoreTokens()) {
                            oct1 = stok.nextToken();
                            oct2 = stok.nextToken();
                            oct3 = stok.nextToken();
                            oct4 = stok.nextToken();
                        }

                        to_ping_ip = oct1 + "." + oct2 + "." + oct3 + "."
                                + String.valueOf(i);

                        if (pingAddress(to_ping_ip, 6789)) {
                            handler.post(new UpdateIPListViewRunnable());
                            try {
                                Thread.sleep(1000);
                            } catch (InterruptedException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }
                            // ips_List.add(to_ping_ip);
                        }

                    }
                }

            }
        });

        pingo.start();

PingAddress（）函数：

public boolean pingAddress(String ip, int port) {

    Socket socket = new Socket();
    try {

        socket.connect(new InetSocketAddress(ip, port), 200);
        socket.close();

    } catch (IOException e) {
        return false;
    }
    return true;
}

列出地址的位置：

static public class UpdateIPListViewRunnable implements Runnable {
    public void run() {
        arrayAdapter.add(to_ping_ip);
        arrayAdapter.notifyDataSetChanged();
    }
}

Answer 1

只需添加一个睡眠时间为5秒的循环，如此处所示。我想您已经可以将ping的新结果集成到先前捕获的数据中。

Thread pingo = new Thread(new Runnable() {
        public void run() {
            while (true) {
                if (readableNetmask.equals("255.255.255.0")) {
                    // keep the above logic
                }

                // delay 5 seconds
                try {
                    Thread.sleep(5000);
                } catch (InterruptedException e) {
                    break;
                }
            }
        }
    });

    pingo.start();

Answer 2

这应该对你有帮助。

private void doPing() {
    if (readableNetmask.equals("255.255.255.0")) {
    // Your logic 
    }
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            doPing();
        }
    }, 5*1000);
}

每隔5秒Ping一次 - Android

2 个答案: