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

    <EditText
        android:layout_width="310dp"
        android:layout_height="70dp"
        android:hint="Enter Your Name"
        android:textColorHint="@color/colorPrimaryDark"
        android:id="@+id/name"
        android:textColor="@color/colorPrimaryDark"
        android:textSize="30dp"/>

    <Button
        android:id="@+id/btn"
        android:layout_marginTop="20dp"
        android:textColor="#fff"
        android:textSize="30dp"
        android:background="@color/colorPrimaryDark"
        android:text=" Click Here "
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/result"
        android:text="Your name is ?"
        android:layout_marginTop="30dp"
        android:textColor="@color/colorAccent"
        android:textSize="30dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>





package com.example.administrator.class2;

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.TextView;

public class MainActivity extends AppCompatActivity {

    EditText name;
    Button btn;
    TextView result;

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

       name = (EditText) findViewById(R.id.name);
       btn = (Button) findViewById(R.id.btn);
       result = (TextView) findViewById(R.id.result);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                result.setText("Your name is " + name.getText().toString());
            }
        });

    }
}