Elastic View in Android

In this article, ElasticView is added in android. The ElasticView is a regular CardView, which can flex from user touches. OnClickListener and other various important methods can also be added to the child view of ElasticView. It makes the user interface more attractive thereby enhancing the user experience.

Approach:

Step 1: Add the support library in build.gradle file and add the dependency in the dependencies section.  It will allow us to add the ElasticView directly in the XML file. 

XML

dependencies {
       implementation 'com.github.armcha:ElasticView:0.2.0'
}

Step 2: Add the following code in the activity_main.xml file. In this file, Elastic View with its child view as ImageView is added to the layout. 

XML

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

    <io.armcha.elasticview.ElasticView
        app:flexibility="7"
        android:layout_margin="20dp"
        android:layout_gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:cardCornerRadius="10dp"
        app:cardElevation="5dp">

        <ImageView
            android:id="@+id/imageView"
            android:src="@drawable/gfg"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>

    </io.armcha.elasticview.ElasticView>

</LinearLayout>

Step 3: Add the following code in the MainActivity.kt file. In this file, OnClickListener is added to ImageView so whenever the user clicks on it, the OnClickListener function gets invoked automatically.

Kotlin

import android.os.Bundle
import android.view.View
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity


class MainActivity : AppCompatActivity() {
    var imageView: ImageView? = null
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        imageView = findViewById(R.id.imageView);
        imageView.setOnClickListener(View.OnClickListener {
            Toast.makeText(this, "Click", Toast.LENGTH_SHORT).show()
        })
    }
}

Java

import android.os.Bundle
import android.view.View
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity

public class MainActivity extends AppCompatActivity {
    // references
    private ImageView imageView;

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

        imageView = findViewById(R.id.imageView);
        imageView.setOnClickListener(
            new View.OnClickListener() {
                @Override public void onClick(View view)
                {
                    Toast.makeText(this, "Click",
                                  Toast.LENGTH_SHORT)
                        .show();
                }
            });
    }
}

Output:

Refer to the official documentation for more information.