Show Snackbar on button click Android Studio

In this tutorial we will display a snackbar on Button click. To display snack bar we have to include design library into build.gradle(app).

Step 1: Create a new project OR Open your project

Step 2: Add design library in build.gradle(Module: app) in dependencies section.

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "com.blogspot.devofandroid.myapplication"
        minSdkVersion 16
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.0.2'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'

    //add this design library
    implementation 'com.android.support:design:27.0.2'
}

Step 3: Snackbar code

activity_main.xml

<?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:gravity="center"
    android:id="@+id/linLayout"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/showsnackbarbtn"
        android:text="Show Snackbar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

MainActivity.java

package com.blogspot.devofandroid.myapplication;


import android.os.Bundle;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;

public class MainActivity extends AppCompatActivity {

    Button showSnackbarBtn;
    LinearLayout linearLayout;

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

        linearLayout = (LinearLayout)findViewById(R.id.linLayout);

        showSnackbarBtn = findViewById(R.id.showsnackbarbtn);
        showSnackbarBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(linearLayout,"This is Snackbar...", Snackbar.LENGTH_SHORT).show();
            }
        });

    }

}

Note: in the following code

LinearLayout linearLayout = (LinearLayout)findViewById(R.id.linLayout);
        Snackbar.make(linearLayout,"This is Snackbar...", Snackbar.LENGTH_SHORT).show();

linearlayout: This is the root layout of activity
This is Snackbar...:  This is message to appear on snackbar, you can customize it.
Snackbar.LENGTH_SHORT: This is the last parameter which is the limit how long the snackbar will be displayed. Possible values are: Snackbar.LENGTH_SHORT, Snackbar.LENGTH_LONG, Snackbar.LENGTH_INDEFINITE
show(): this method is used to display the toast.

Step 4: Run the project:

Output: