login

package com.example.com.mylogin;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity
{
    EditText txtUser;
    EditText txtPass;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setPointer();
    }

    public void setPointer()
    {
        txtUser=(EditText)findViewById(R.id.user);
        txtPass=(EditText)findViewById(R.id.pass);
    }

    public void btnLogin(View v)
    {
        String chkUser = txtUser.getText().toString();
        String chkPass = txtPass.getText().toString();

        if(chkUser.toLowerCase().equals("oorya") && chkPass.toLowerCase().equals("12345"))
            Toast.makeText(this, "Hello "+chkUser, Toast.LENGTH_LONG).show();
        else
            Toast.makeText(this, "Wrong User", Toast.LENGTH_LONG).show();
    }

}
================================================xml

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:gravity="center">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical"
        android:id="@+id/top"
        android:weightSum="1">

        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:id="@+id/imageView"
            android:src="@drawable/hackeru"/>
    </LinearLayout>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical"
        android:id="@+id/mid"
        android:gravity="center"
        android:weightSum="1">

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="@string/enter_user"
            android:textSize="24sp"
            android:inputType="text"
            android:id="@+id/user"/>

        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="@string/enter_pass"
            android:textSize="24sp"
            android:inputType="textPassword"
            android:id="@+id/pass"
            android:layout_below="@+id/user"/>
    </RelativeLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical"
        android:id="@+id/bot"
        android:gravity="center">

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Login"
            android:textSize="30dp"
            android:id="@+id/button"
            android:background="#8aa2bfdf"
            android:layout_gravity="center_horizontal"
            android:onClick="btnLogin"/>
    </LinearLayout>
</LinearLayout>
=============================================values
<resources>
    <string name="app_name">My Login</string>
    <string name="action_settings">Settings</string>
    <string name="enter_user">Enter user name</string>
    <string name="enter_pass">Enter password</string>
</resources>