How to set background color on Button click using View in Android || Change background color using View in Android

How to set the background color on Button click using View in Android

Hello Friends, Today We will teach you how to change the layout background color on Button click using View in Android

Follow the Steps

Step 1. Create a new project.

Step 2. Create a Button and Provide the id.

activity_main.xml :-

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
    tools:context=".MainActivity">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button"
        android:layout_centerInParent="true"
        android:id="@+id/btn"/>

</RelativeLayout>

Step 3. Now Create Object of View and Button in Java File

MainActivity.java :-

package com.akshayarora.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.annotation.SuppressLint;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.hardware.Camera;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    Button button;
    View v;
    boolean isColor = true;

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

        v = this.getWindow().getDecorView();
        button = (Button) findViewById(R.id.btn);

        button.setOnClickListener(new View.OnClickListener() {
            @SuppressLint("ResourceType")
            @Override
            public void onClick(View view) {
                if (isColor) {
                   v.setBackgroundResource(android.R.color.holo_blue_dark);
                    isColor = false;
                } else {
                   v.setBackgroundResource(android.R.color.white);
                    isColor = true;
                }
            }
        });
    }
}

We use View v = this.getWindow().getDecorView(); for get current window view for change the background color of current window ( Current Layout ).

Now Run the app and see the output:-

When the app is run:-

Now Click on Button:-

Click again on Button:-

Enjoy!