非常简单的android-php通信不适用于http发布

Question

I have a really simple code that does not work. I just want to send a string from an android app to a php server. Nothing fancy. I looked for similar questions but i didn't come up with anything. I don't get the problem, the logcat does not give any error and everything seems working fine, but when i run my php script and send the string it does not happen anything.

this is my app's code

List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("your_string", yourString));

try {
    DefaultHttpClient httpClient = new DefaultHttpClient();
    HttpPost httpPost = new HttpPost(""); //my correct script adress
    httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));           
    HttpResponse httpResponse = httpClient.execute(httpPost);
    HttpEntity httpEntity = httpResponse.getEntity(); 
    Context context = getApplicationContext();
    CharSequence text = "Succesfully uploaded!";
    int duration = Toast.LENGTH_SHORT;
    Toast toast = Toast.makeText(context, text, duration);
    toast.show();
} catch (UnsupportedEncodingException e) {
    e.printStackTrace();
} catch (ClientProtocolException e) {
    e.printStackTrace();
} catch (IOException e) {
     e.printStackTrace();
}

and this is php server

<?php
    if (isset($_POST['your_string']) && $_POST['your_string'] != '') {
        $your_string = $_POST['your_string'];
        echo 'received the string: ' . $your_string;
    } else {
        echo 'empty';
    }
?>

Answer 1

Are you running your android code async? Consider using an Async Task .

Also be sure to add the Content type header:

HttpEntity entity = new UrlEncodedFormEntity(nameValuePairs);
httppost.addHeader(entity.getContentType());
httppost.setEntity(entity);

You may also check the server response and log it so you know where's your problem, like this:

Log.d("Res",EntityUtils.toString(httpResponse.getEntity()));

Wish you luck ;)