Question

I am trying to build Android Login app with PHP,mySQL and localhost. However it displays connection problems. I tried both emulator and Android device. I also tried IP address of my WLAN by finding its IP from ifconfig under Wireless LAN Adapter Wifi 2. My Android device uses the same WIFIconnection(although I have a repeater too, if that info is of any use). It used to display 'ehostunreach' in my emulator. And 'ehostunreach' & 'etimedout' in my Android device. I hope this much detail is enough. Any help would be much appreciated.

       protected String doInBackground(String... params) {
    String type = params[0];
    String login_url = "http://10.0.2.2/login.php";
    if(type.equals("login")) {
        try {
            String user_name = params[1];
            String password = params[2];
            URL url = new URL(login_url);
            HttpURLConnection httpURLConnection = (HttpURLConnection)url.openConnection();
            httpURLConnection.setRequestMethod("POST");
            httpURLConnection.setDoOutput(true);
            httpURLConnection.setDoInput(true);
            OutputStream outputStream = httpURLConnection.getOutputStream();
            BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"));
            String post_data = URLEncoder.encode("user_name","UTF-8")+"="+URLEncoder.encode(user_name,"UTF-8")+"&"
                    +URLEncoder.encode("password","UTF-8")+"="+URLEncoder.encode(password,"UTF-8");
            bufferedWriter.write(post_data);
             ........

Answer 1

无法访问该服务器。尝试从PC上ping到10.0.2.2，可能会超时。首先尝试成功ping。也许服务器没有该IP地址，或者您的路由器正在过滤掉消息。

Failed to connect to port 10.0.2.2(port 80):ETIMEDOUT caused by ETIMEDOUT

1 个答案: