안드로이드 간단한 회원가입/ 로그인 소스를 만들었는데 작동되지않는 이유를 모르겠습니다.

회원가입 입니다------------------------------------------------------------------------

public class JoinActivity extends Activity {
ImageButton join_finish_imagebutton,join_cancel_imagebutton;
String myResult;
String edit1, edit2, edit3, edit4;
AsyncTaskJoin noticeUpload;
Boolean is;

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.join);

is=false;
join_cancel_imagebutton = (ImageButton)findViewById(R.id.join_cancel_imagebutton);
join_cancel_imagebutton.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
Intent intent = new Intent(getBaseContext(), MainActivity.class);
startActivity(intent);
}
});

join_finish_imagebutton = (ImageButton) findViewById(R.id.join_finish_imagebutton);
join_finish_imagebutton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// manager aa;
// aa.setName()
if (getFormValue()) {
noticeUpload = new AsyncTaskJoin();
noticeUpload.execute();
}
}
});
}

private boolean getFormValue() {

if (TextUtils
.isEmpty(((EditText) (findViewById(R.id.join_name_edittext)))
.getText().toString())) {
Toast.makeText(JoinActivity.this, "이름을 입력하세요.", Toast.LENGTH_SHORT)
.show();
return false;
}

if (TextUtils
.isEmpty(((EditText) (findViewById(R.id.join_id_edittext)))
.getText().toString())) {
Toast.makeText(JoinActivity.this, "닉네임을 입력하세요.", Toast.LENGTH_SHORT)
.show();
return false;
}

if (TextUtils
.isEmpty(((EditText) (findViewById(R.id.join_pw_edittext)))
.getText().toString())) {
Toast.makeText(JoinActivity.this, "비밀번호를 입력하세요.",
Toast.LENGTH_SHORT).show();
return false;
}

if (TextUtils
.isEmpty(((EditText) (findViewById(R.id.join_phone_edittext)))
.getText().toString())) {
Toast.makeText(JoinActivity.this, "전화번호를 입력하세요.",
Toast.LENGTH_SHORT).show();
return false;
}

edit1 = ((EditText) (findViewById(R.id.join_name_edittext))).getText()
.toString();
edit2 = ((EditText) (findViewById(R.id.join_id_edittext))).getText()
.toString();
edit3 = ((EditText) (findViewById(R.id.join_pw_edittext))).getText()
.toString();
edit4 = ((EditText) (findViewById(R.id.join_phone_edittext))).getText()
.toString();

return true;
}

private class AsyncTaskJoin extends AsyncTask

@Override
protected Boolean doInBackground(Object... params) {

// TODO Auto-generated method stub
boolean result = false;

Vector vars = new Vector();
try {
// HTTP POST
vars.add(new BasicNameValuePair("name", edit1));
vars.add(new BasicNameValuePair("id", edit2));
vars.add(new BasicNameValuePair("passwd", edit3));
vars.add(new BasicNameValuePair("phone", edit4));
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(vars, HTTP.UTF_8);

String url = "http://127.0.0.1/join.php?useUnicode=true&characterEncoding=utf8";
HttpPost request = new HttpPost(url);
request.setEntity(entity);
try {
ResponseHandler responseHandler = new BasicResponseHandler();
HttpClient client = new DefaultHttpClient();
Log.i("kkkkk", url);

String responseBody = client.execute(request,responseHandler);
responseBody.trim();
//String[] res = responseBody.split("");
Log.i("kkkkk", responseBody);
if (responseBody.equals("ok")) {
result = true;
}
} catch (ClientProtocolException e) {
Log.i("kkkkk", "error");
result = false;
} catch (IOException e) {
Log.i("Failed to IOException: ", "" + e);
result = false;
}
} catch (Exception e) {
Log.i("kkkkk", "" + e);
result = false;
}
return result;
}
@Override
protected void onPostExecute(Boolean result) {

if (result) {
Toast.makeText(JoinActivity.this, "회원가입에 성공하였습니다.",
Toast.LENGTH_LONG).show();
is = true;
finish();

} else {
Toast.makeText(JoinActivity.this, "회원가입에 실패하였습니다.",
Toast.LENGTH_LONG).show();
is = false;
finish();

}
JoinActivity.this
.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
}

@Override
protected void onPreExecute() {
}
@Override
protected void onProgressUpdate(String... values) {
}
}
}
로그인 입니다-------------------------------------------------------------------------
public class MainActivity extends Activity {
ImageButton main_login_imagebutton, main_join_imagebutton;
private EditText idEV;
private EditText pwEV;
static final int DATE_DIALOG_ID = 0;
String id,pw;
AsyncTaskJoin noticeUpload;
boolean is;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

idEV =(EditText) findViewById(R.id.main_id_edittext);
pwEV = (EditText) findViewById(R.id.main_pw_edittext);


is=false;
Intent i=getIntent();
if(i.getStringExtra("id")!=null)
idEV.setText(i.getStringExtra("id"));
if(i.getStringExtra("pass")!=null)
pwEV.setText(i.getStringExtra("pass"));

main_login_imagebutton = (ImageButton) findViewById(R.id.main_login_imagebutton);
main_login_imagebutton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if(getFormValue()){
noticeUpload = new AsyncTaskJoin();
noticeUpload.execute();

}
}});

main_join_imagebutton = (ImageButton) findViewById(R.id.main_join_imagebutton);
main_join_imagebutton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent=new Intent(MainActivity.this,JoinActivity.class);
startActivity(intent);
}});
}

private boolean getFormValue() {


if (TextUtils.isEmpty(idEV.getText())) {
Toast.makeText(MainActivity.this, "ID입력해주세요.", Toast.LENGTH_SHORT)
.show();
return false;
}

if (TextUtils.isEmpty(pwEV.getText())) {
Toast.makeText(MainActivity.this, "PASSWORD입력해주세요.", Toast.LENGTH_SHORT)
.show();
return false;
}

id=idEV.getText().toString();
pw=pwEV.getText().toString();



return true;
}

@SuppressLint("NewApi")
private class AsyncTaskJoin extends AsyncTask

protected Boolean doInBackground(Object... params) {

// TODO Auto-generated method stub
boolean result = false;

Vector vars = new Vector();
try {
// HTTP POST
vars.add( new BasicNameValuePair("id", id));
vars.add( new BasicNameValuePair("passwd", pw));
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(vars,HTTP.UTF_8);

String url = "http://127.0.0.1/login.php";
HttpPost request = new HttpPost(url);
request.setEntity(entity);
try {
ResponseHandler responseHandler = new BasicResponseHandler();
HttpClient client = new DefaultHttpClient();
String responseBody = client.execute(request,responseHandler);
responseBody.trim();
Log.i("kkkkk", responseBody);

if (responseBody.equals("ok")) {
result = true;
is=true;
}
else if(responseBody.equals("no")){
result=false;
is=true;
}
} catch (ClientProtocolException e) {
Log.e("Failed to ClientProtocolException ", ""+e);
result = false;
} catch (IOException e) {
Log.e("Failed to IOException: ", ""+e);
result = false;
}
} catch (Exception e) {
result = false;
Log.e("other error :", ""+e);
}
return result;
}
protected void onPostExecute(Boolean result) {

if (result && is) {
Toast.makeText(MainActivity.this, "로그인 완료.", Toast.LENGTH_LONG).show();
Intent intent=new Intent(MainActivity.this,HomeActivity.class);

intent.putExtra("id", id);
startActivity(intent);

}else if(result || is) {
Toast.makeText(MainActivity.this, "로그인 실패.", Toast.LENGTH_LONG).show();

}else {
Toast.makeText(MainActivity.this,"서버접속 불량", Toast.LENGTH_LONG).show();

}
MainActivity.this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
}
protected void onPreExecute() {
}

protected void onProgressUpdate(String... values) {
}
}
}
--------------------------------------------------------------------------------------
1년전에 이렇게해서 회원가입 로그인 되었었는데..
1. 회원가입 후 DB에는 들어가는데 실패했다고 뜹니다.
2. 로그인은 되지않구요.

문제점이 뭔지 알고싶습니다 ㅠㅠ..... 9시간을 이것만 만들었어요ㅠㅠ