Android สอบถามเรื่องการค้นหาข้อมูลจาก server โดยใช้ edit text แต่ไม่สามารถนำมาแสดงผลได้

 //// $_POST["strUser"] = "ict1340"; // for Sample
	//$_POST["strUser"] = "weerachai@1";  // for Sample

	$strUsername = $_POST["strUser"];
	 $strSQL = "SELECT * FROM Room AS r, Coordinates AS c WHERE r.level_id=c.level_id AND room_name = '".$strUsername."' ";
	$objQuery = mysql_query($strSQL);
	$objResult = mysql_fetch_array($objQuery);
	$intNumRows = mysql_num_rows($objQuery);
	if($intNumRows==0)
	{
		$arr['StatusID'] = "0"; 
		$arr['room_id'] = "0"; 
		$arr['Error'] = "Incorrect Username and Password";	
	}
	else
	{
		$arr['StatusID'] = "1"; 
		$arr['room_id'] = $objResult["room_id"]; 
		$arr['Error'] = "";	
	}

	/**
		$arr['StatusID'] // (0=Failed , 1=Complete)
		$arr['MemberID'] // MemberID
		$arr['Error' // Error Message
	*/
	
	mysql_close($objConnect);
	
	echo json_encode($arr);

<?php

        $strMemberID = $_POST["sMemberID"];
	 $strSQL = "SELECT * FROM Room AS r, Coordinates AS c WHERE r.level_id=c.level_id AND room_id = '".$strMemberID."' ";

	$objQuery = mysql_query($strSQL);
	$obResult = mysql_fetch_array($objQuery);
	if($obResult)
	{
		$arr["room_id"] = $obResult["room_id"];
		$arr["room_name"] = $obResult["room_name"];
		$arr["coordinates_x"] = $obResult["coordinates_x"];
		$arr["coordinates_y"] = $obResult["coordinates_y"];
		$arr["level_id"] = $obResult["level_id"];
                $arr["coordinates_X1"] = $obResult["coordinates_X1"];
		$arr["coordinates_Y1"] = $obResult["coordinates_Y1"];
		$arr["coordinates_X2"] = $obResult["coordinates_X2"];
		$arr["coordinates_Y2"] = $obResult["coordinates_Y2"];
		$arr["coordinates_X3"] = $obResult["coordinates_X3"];
                $arr["coordinates_Y3"] = $obResult["coordinates_Y3"];
		$arr["coordinates_X4"] = $obResult["coordinates_X4"];
		$arr["coordinates_Y4"] = $obResult["coordinates_Y4"];
	}

	
	mysql_close($objConnect);

	/*** return JSON by MemberID ***/
	/* Eg :
	{"MemberID":"2",
	"Username":"adisorn",
	"Password":"adisorn@2",
	"Name":"Adisorn Bunsong",
	"Tel":"021978032",
	"Email":"[email protected]"}
	*/
	
	echo json_encode($arr);
?>

package com.example.navigationofup;

import android.os.Bundle;
import android.app.Activity;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import android.app.AlertDialog;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;

import android.os.Build;
import android.os.Bundle;
import android.os.StrictMode;
import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.View;
import android.view.Menu;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

@SuppressLint("NewApi")
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
public class Room_search extends Activity {

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);
		setContentView(R.layout.room_search);
		// Permission StrictMode

		if (android.os.Build.VERSION.SDK_INT > 9) {
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy);
        }

		final AlertDialog.Builder ad = new AlertDialog.Builder(this);
		// txtUsername & txtPassword
		final EditText txtUser = (EditText) findViewById(R.id.txtUsername);
		final EditText txtPass = (EditText)findViewById(R.id.txtUsername1);

		// btnLogin
		final Button btnLogin = (Button) findViewById(R.id.btnLogin);

		// Perform action on click
		btnLogin.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {

				String url = "http://pampas.site11.com/php_get_data.php";
				List<NameValuePair> params = new ArrayList<NameValuePair>();
				params.add(new BasicNameValuePair("strUser", txtUser.getText()
						.toString()));
				params.add(new BasicNameValuePair("strPass", txtPass.getText()
					.toString()));

				/**
				 * Get result from Server (Return the JSON Code) StatusID = ?
				 * [0=Failed,1=Complete] MemberID = ? [Eg : 1] Error = ? [On
				 * case error return custom error message]
				 * 
				 * Eg Login Failed = {"StatusID":"0","MemberID":"0","Error":
				 * "Incorrect Username and Password"} Eg Login Complete =
				 * {"StatusID":"1","MemberID":"2","Error":""}
				 */

				String resultServer = getHttpPost(url, params);

				/*** Default Value ***/
				String strStatusID = "0";
				String strMemberID = "0";
				String strError = "Unknow Status!";

				JSONObject c;
				try {
					c = new JSONObject(resultServer);
					strStatusID = c.getString("StatusID");
					strMemberID = c.getString("room_id");
					strError = c.getString("Error");

				} catch (JSONException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}

				// Prepare Login
				if (strStatusID.equals("0")) {
					// Dialog
					ad.setTitle("Error! ");
					ad.setIcon(android.R.drawable.btn_star_big_on);
					ad.setPositiveButton("Close", null);
					ad.setMessage(strError);
					ad.show();
					txtUser.setText("");
					txtPass.setText("");
				} else {
					Toast.makeText(Room_search.this, "กรอกถูกต้อง",
							Toast.LENGTH_SHORT).show();
					Intent newActivity = new Intent(Room_search.this,
							DetailActivity.class);
					newActivity.putExtra("MemberID", strMemberID);
					startActivity(newActivity);
				}

			}
		});

	}

	public String getHttpPost(String url, List<NameValuePair> params) {
		StringBuilder str = new StringBuilder();
		HttpClient client = new DefaultHttpClient();
		HttpPost httpPost = new HttpPost(url);

		try {
			httpPost.setEntity(new UrlEncodedFormEntity(params));
			HttpResponse response = client.execute(httpPost);
			StatusLine statusLine = response.getStatusLine();
			int statusCode = statusLine.getStatusCode();
			if (statusCode == 200) { // Status OK
				HttpEntity entity = response.getEntity();
				InputStream content = entity.getContent();
				BufferedReader reader = new BufferedReader(
						new InputStreamReader(content));
				String line;
				while ((line = reader.readLine()) != null) {
					str.append(line);
				}
			} else {
				Log.e("Log", "Failed to download result..");
			}
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return str.toString();
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

public class DetailActivity extends Activity {

	@SuppressLint("NewApi")
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_detail);

		// Permission StrictMode
        if (android.os.Build.VERSION.SDK_INT > 9) {
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy);
        }
        
        showInfo();
        
        // btnBack
        final Button btnBack = (Button) findViewById(R.id.btnBack);
        // Perform action on click
        btnBack.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
				Intent newActivity = new Intent(DetailActivity.this,Room_search.class);
				startActivity(newActivity);
            }
        });
        
    }

	 public void showInfo()
	    {
	    	// txtMemberID,txtMemberID,txtUsername,txtPassword,txtName,txtEmail,txtTel
	    	final TextView tMemberID = (TextView)findViewById(R.id.txtMemberID);
	    	final TextView tUsername = (TextView)findViewById(R.id.txtUsername);
	    	final TextView tPassword = (TextView)findViewById(R.id.txtPassword);
	    	final TextView tName = (TextView)findViewById(R.id.txtName);
	    	final TextView tEmail = (TextView)findViewById(R.id.txtEmail);
	    	final TextView tTel = (TextView)findViewById(R.id.txtTel);
	    	
	    	String url = "https://www.thaicreate.com/android/getByMemberID.php";
	    	
	    	Intent intent= getIntent();
	    	final String MemberID = intent.getStringExtra("MemberID"); 

			List<NameValuePair> params = new ArrayList<NameValuePair>();
	        params.add(new BasicNameValuePair("sMemberID", MemberID));

	        /** Get result from Server (Return the JSON Code)
	         * 
	         * {"MemberID":"2","Username":"adisorn","Password":"adisorn@2","Name":"Adisorn Bunsong","Tel":"021978032","Email":"[email protected]"}
	         */
	        
	    	String resultServer  = getHttpPost(url,params);
	        
	    	String strMemberID = "";
	    	String strUsername = "";
	    	String strPassword = "";
	    	String strName = "";
	    	String strEmail = "";
	    	String strTel = "";
	    	
	    	JSONObject c;
			try {
				c = new JSONObject(resultServer);
				strMemberID = c.getString("room_id");
				strUsername = c.getString("room_name");
				
				
				if(!strMemberID.equals(""))
				{
					tMemberID.setText(strMemberID);
					tUsername.setText(strUsername);
					
				}
				else
				{
					tMemberID.setText("-");
					tUsername.setText("-");
					
				}
	        	
			} catch (JSONException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
	    }
	    
		public String getHttpPost(String url,List<NameValuePair> params) {
			StringBuilder str = new StringBuilder();
			HttpClient client = new DefaultHttpClient();
			HttpPost httpPost = new HttpPost(url);
			
			try {
				httpPost.setEntity(new UrlEncodedFormEntity(params));
				HttpResponse response = client.execute(httpPost);
				StatusLine statusLine = response.getStatusLine();
				int statusCode = statusLine.getStatusCode();
				if (statusCode == 200) { // Status OK
					HttpEntity entity = response.getEntity();
					InputStream content = entity.getContent();
					BufferedReader reader = new BufferedReader(new InputStreamReader(content));
					String line;
					while ((line = reader.readLine()) != null) {
						str.append(line);
					}
				} else {
					Log.e("Log", "Failed to download result..");
				}
			} catch (ClientProtocolException e) {
				e.printStackTrace();
			} catch (IOException e) {
				e.printStackTrace();
			}
			return str.toString();
		}
		
	    @Override
	    public boolean onCreateOptionsMenu(Menu menu) {
	        getMenuInflater().inflate(R.menu.main, menu);
	        return true;
	    }
	    
	}