How to Add Fade and Shrink Animation in RecyclerView in Android?

12 Apr, 2021
In this article, we are going to show the fade and shrink animation in RecyclerView. When we move downward then the item at the top will be fading out and then it will shrink. In the output, we can see how it is happening. We will be implementing this Java programming language.
Step 1: Create a new Project
To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. Note that select Java as the programming language.  
Step 2: Add this into build.gradle file
implementation 'com.stone.vega.library:VegaLayoutManager:1.0.6'
Step 3: Working with the items.xml file
Go to the app > res > layout > New > Layout Resource File and name the file as item. Go to the item.xml file and refer to the following code. Below is the code for the item.xml file.
XML
<?xml version="1.0" encoding="utf-8"?><LinearLayout     xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="vertical">      <Button        android:id="@+id/itemclick"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="Click Here" />      </LinearLayout>
Step 4: Working with the RecyclerViewAdapter.java file
Create a new java class in android studio and name the class as RecyclerViewAdapter. Go to the RecyclerViewAdapter.java file and refer to the following code. Below is the code for the RecyclerViewAdapter.java file. 
Java
import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.Toast;  import androidx.annotation.NonNull;import androidx.recyclerview.widget.RecyclerView;  public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {      private int mcount;      public RecyclerViewAdapter(int mcount) {        this.mcount = mcount;    }          @NonNull    @Override    public RecyclerViewAdapter.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.items, parent, false);        return new ViewHolder(view);    }      @Override    public void onBindViewHolder(@NonNull final RecyclerViewAdapter.ViewHolder holder, final int position) {        holder.itemclick.setText("Button" + position);        holder.itemclick.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                Toast.makeText(holder.itemView.getContext(), "Clicked : " + position, Toast.LENGTH_LONG).show();            }        });    }      @Override    public int getItemCount() {        return mcount;    }      public class ViewHolder extends RecyclerView.ViewHolder {        Button itemclick;          public ViewHolder(@NonNull View itemView) {            super(itemView);            itemclick = itemView.findViewById(R.id.itemclick);        }    }}
Step 5: Working with the activity_main.xml file
Navigate to the app > res > layout > activity_main.xml and add the below code to that file. Below is the code for the activity_main.xml file. 
XML
<?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"    android:orientation="vertical"    tools:context=".MainActivity">      <androidx.recyclerview.widget.RecyclerView        android:id="@+id/rcv"        android:layout_width="match_parent"        android:layout_height="match_parent" />  </RelativeLayout>
Step 6: Working with the MainActivity.java file
Go to the MainActivity.java file and refer to the following code. Below is the code for the MainActivity.java file. Comments are added inside the code to understand the code in more detail.
Java
import android.os.Bundle;  import androidx.appcompat.app.AppCompatActivity;import androidx.recyclerview.widget.RecyclerView;  import com.pluscubed.recyclerfastscroll.RecyclerFastScroller;import com.stone.vega.library.VegaLayoutManager;  public class MainActivity extends AppCompatActivity {      RecyclerView recyclerView;    RecyclerFastScroller fastScroller;      @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        recyclerView = findViewById(R.id.rcv);                  // We have used this to add fade and shrink method        recyclerView.setLayoutManager(new VegaLayoutManager());        recyclerView.setAdapter(new RecyclerViewAdapter(50));    }}
Output:
Android-Animation
Android
Java
Java
Android
Writing code in comment?
Please use ide.geeksforgeeks.org,
generate link and share the link here.
How to Add Views Dynamically and Store Data in Arraylist in Android?
Android SDK and it's Components
How to Communicate Between Fragments in Android?
Flutter - Custom Bottom Navigation Bar
Retrofit with Kotlin Coroutine in Android
Arrays in Java
Split() String method in Java with examples
Arrays.sort() in Java with examples
Reverse a string in Java
Object Oriented Programming (OOPs) Concept in Java