my task1

MainActivity.java
=============================
package com.example.teacher.mytasks;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {
    EditText txtUser,txtPass;

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

    private void setPointer() {
        txtUser=findViewById(R.id.txtUser);
        txtPass=findViewById(R.id.txtPass);
        //how to get data from EditText

        String userName=txtUser.getText().toString();
    }
}

string.xml
==================
<resources>
    <string name="app_name">MyTasks</string>
    <string name="userName">Enter your user name..</string>
    <string name="userPass">Enter your password...</string>
    <string name="login">Login</string>
    <string name="register">Register</string>
</resources>


activity_main.xml
=======================
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_margin="16dp">

    <!-- place for logo -->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical"
        android:gravity="center">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="MY TASK"
            android:textSize="64sp"/>
    </LinearLayout>

    <!-- place for user input -->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical"
        android:gravity="center">
        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="@string/userName"
            android:id="@+id/txtUser"/>
        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="@string/userPass"
            android:inputType="textPassword"
            android:layout_marginTop="20dp"
            android:id="@+id/txtPass"/>
    </LinearLayout>

    <!-- place for buttons-->
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="horizontal"
        android:gravity="top">
        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/register"
            android:textColor="#ffffff"
            android:background="#009fff"
            android:textSize="22sp"
            android:layout_weight="1"
            android:layout_margin="20dp"
            android:id="@+id/btnRegister"/>
        <Button
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/login"
            android:textColor="#ffffff"
            android:background="#009fff"
            android:textSize="22sp"
            android:layout_weight="1"
            android:layout_margin="20dp"
            android:id="@+id/btnLogin"/>
    </LinearLayout>

</LinearLayout>