a problem with if statement when login, android

See more:

Mobile

Android

phone

hi all :)

I have a problem with this code

when I try to login without database, it make no action

here is the .Java File

package com.msagroup.sbhmg;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class LogIn extends Activity {
	
	Button _gotousermain;
	EditText _etmail;
	EditText _etpassword;
	String _email;
	String _pass;
	TextView _tvcomm;

	@Override
	
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.login);
        
        
        _gotousermain = (Button) findViewById(R.id.btnlogin);
        _etmail = (EditText) findViewById(R.id.etmail);
        _etpassword = (EditText) findViewById(R.id.etpassword);
        _tvcomm = (TextView) findViewById(R.id.tvcomment);
        
        _gotousermain.setOnClickListener(new View.OnClickListener() {
			
			public void onClick(View v) {
				//startActivity(new Intent(LogIn.this, UserMain.class));
				
					_email = _etmail.getText().toString();
					_pass =  _etpassword.getText().toString();
					if(_email == "user@user.com" && _pass == "123")
					{
						startActivity(new Intent(LogIn.this, UserMain.class));
					}
					else
					{
						if(_email == "admin@admin.com" && _pass == "123")
						{
							startActivity(new Intent(LogIn.this, AdminMain.class));
						}
						else
						{
							_tvcomm.append("@string");
						}
					}
				//} 
				//catch (Exception e) {
				//}
				//finally
				//{
				//	
				//}
		        
				
			}
		});
        
	
	}
}

and here is the .XML file:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <EditText
        android:id="@+id/etmail"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="41dp"
        android:hint="@string/email"
        android:inputType="textEmailAddress" >

        <requestFocus />
    </EditText>

    <EditText
        android:id="@+id/etpassword"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/etmail"
        android:layout_marginTop="16dp"
        android:hint="@string/password"
        android:inputType="textPassword" />

    <Button
        android:id="@+id/btnlogin"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/etpassword"
        android:layout_marginTop="16dp"
        android:text="@string/login" />

    <Button
        android:id="@+id/btnregistration"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/btnlogin"
        android:layout_marginTop="70dp"
        android:text="@string/registration" />

    <Button
        android:id="@+id/btnbacktomain"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/btnregistration"
        android:layout_alignBottom="@+id/btnregistration"
        android:layout_alignParentRight="true"
        android:text="@string/backtomain" />

    <TextView
        android:id="@+id/tvcomment"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true"
        android:text="@string/invalidlogin"
        android:visibility="invisible"/>

</RelativeLayout>

thank you all :)