HttpClient不会在Android中执行Ajax（包含在PHP脚本中）

I make a call to a PHP script but does not execute a piece of AJAX code. from the mobile browser runs, and from the PC browser too.

HttpClient httpclient = new DefaultHttpClient();
HttpGet httppost = new HttpGet(urli);
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();

My AJAX code:

$.ajax({
        type: 'POST',
        url: /* myURL */
        dataType: 'text',  
        cache: false,
        contentType: false,
        processData: false,
        data: form_data,
        success: function (data) 
        {
            if(data == 1)
            {
                alert("....");
            }
            else if (data == 0)
            {
                alert("....");
            }                               
        }                           
    });

What it is?