Add Button On Android Studio

Steps to add button and set a function to the button . Video and codes for making it easy for you .

Watch the video all the steps explained in it in detail .

XML Codes :

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

 <Button
 android:id="@+id/button"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignParentEnd="true"
 android:layout_alignParentRight="true"
 android:layout_centerVertical="true"
 android:layout_marginEnd="134dp"
 android:layout_marginRight="134dp"
 android:text="Button" />
</RelativeLayout>

Java Codes :
Add them below onCreate method .

package com.button;

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

public class MainActivity extends AppCompatActivity {

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

        Button button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Toast.makeText(MainActivity.this,"Button clicked",Toast.LENGTH_SHORT).show();
            }
        });
    }
}

Demo :

Demo On Adding Button On Android Studio