my login - 1

LoginActivity.java
--------------------------------


package com.example.teacher.mylogin;

import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class LoginActivity extends AppCompatActivity {

    Context context;

    Button btnLog, btnReg;
    EditText txtUser, txtPass;

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

        setPointer();
    }

    private void setPointer() {
        context = this;

        btnLog = findViewById(R.id.logBtnLogin);
        btnReg = findViewById(R.id.logBtnReg);

        txtUser = findViewById(R.id.logTxtUser);
        txtPass = findViewById(R.id.logTxtPass);

        btnLog.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                final String USER = "admin";
                final String PASS = "123456";

                String enteredUser = txtUser.getText().toString();
                String enteredPass = txtPass.getText().toString();

                if(enteredUser.equals(USER)&&enteredPass.equals(PASS)){
                    Toast.makeText(context, getResources().getString(R.string.logMsgLogSuccess), Toast.LENGTH_SHORT).show();
                }
                else{
                    Toast.makeText(context, getResources().getString(R.string.logMsgLogFail), Toast.LENGTH_SHORT).show();

                }

            }
        });


    }
}

-------------------------------------------

activity_login.xml
-------------------------------------------

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="horizontal">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:text="@string/logTxtLogo"
            android:textSize="@dimen/logoText"
            android:gravity="center"/>

    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical">

        <EditText
            android:id="@+id/logTxtUser"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:hint="@string/logUserHint"
            android:textSize="@dimen/txtText"
            android:layout_margin="@dimen/txtMargin"/>

        <EditText
            android:id="@+id/logTxtPass"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:hint="@string/logPassHint"
            android:textSize="@dimen/txtText"
            android:layout_margin="@dimen/txtMargin"
            android:inputType="numberPassword"/>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="horizontal"
        android:gravity="center">

        <Button
            android:id="@+id/logBtnLogin"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@color/btnBackground"
            android:textColor="@color/btnText"
            android:text="@string/logBtnLogin"
            android:layout_margin="@dimen/btnMargin"/>

        <Button
            android:id="@+id/logBtnReg"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@color/btnBackground"
            android:textColor="@color/btnText"
            android:text="@string/logBtnReg"
            android:layout_margin="@dimen/btnMargin"/>
    </LinearLayout>

</LinearLayout>



-------------------------------------------------------------------------

strings.xml
------------------------------------------------
<resources>
    <string name="app_name">MyLogin</string>
    <string name="logTxtLogo">My Logo</string>
    <string name="logUserHint">username</string>
    <string name="logPassHint">password</string>
    <string name="logBtnLogin">Login</string>
    <string name="logBtnReg">Register</string>
    <string name="logMsgLogSuccess">Login was successful</string>
    <string name="logMsgLogFail">Failure to login</string>
</resources>


-----------------------------------------------

dimens.xml
-----------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <dimen name="txtText">24sp</dimen>
    <dimen name="logoText">35sp</dimen>
    <dimen name="txtMargin">10dp</dimen>
    <dimen name="btnMargin">5dp</dimen>
</resources>

---------------------------------------------

color.xml
--------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>
    <color name="btnBackground">#009fff</color>
    <color name="btnText">#fff</color>
</resources>