Im很難從我的本地主機檢索數據。我使用xampp。我想要的是顯示從本地主機到Android手機列表視圖的數據。這是我在網上找到的關於localhost和android的基本代碼。這裏是片段:無法連接到本地主機使用Android手機調試
p
ublic class Database_demo extends ListActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String result = null;
InputStream is = null;
StringBuilder sb = null;
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
List<String> r = new ArrayList<String>();
try{
//http post
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://10.0.2.2/android_connect3/");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}
catch(Exception e){
Toast.makeText(getBaseContext(),e.toString() ,Toast.LENGTH_LONG).show();
}
//Convert response to string
try
{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"UTF-8"));
sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null)
{
sb.append(line + "\n");
}
is.close();
result = sb.toString();
}
catch(Exception e)
{
Toast.makeText(getBaseContext(),e.toString() ,Toast.LENGTH_LONG).show();
}
//END Convert response to string
try{
JSONArray jArray = new JSONArray(result);
JSONObject json_data=null;
for(int i=0;i<jArray.length();i++)
{
json_data = jArray.getJSONObject(i);
r.add(json_data.getString("reg"));
}
setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1, r));
}
catch(JSONException e1){
Toast.makeText(getBaseContext(),e1.toString() ,Toast.LENGTH_LONG).show();
} catch (ParseException e1) {
Toast.makeText(getBaseContext(),e1.toString() ,Toast.LENGTH_LONG).show();
}
}
}
,這裏是我的PHP文件:
<?php
mysql_connect('localhost','root','');
mysql_select_db('android_sql');
$sql = "select * from reg";
$query = mysql_query($sql);
while($row = mysql_fetch_assoc($query)){
$output[] = $row;
}
print (json_encode($output));
mysql_close();
?>
這是我的例外: http://pastebin.com/QZkfG0bp
即時得到從本地主機 – thenewbie 2012-07-06 02:54:18