recycler view

Item.java
-----------------
public class Item {

    private String text, subText, subText01, subText02;
    private boolean isExpandable;

    public Item(String text, String subText, String subText01, String subText02, boolean isExpandable) {
        this.text = text;
        this.subText = "Amount:" + subText;
        this.isExpandable = isExpandable;
        this.subText01 = "Address: " + subText01;
        this.subText02 = "Type: " + subText02;

    }


    public String getSubText02() {
        return subText02;
    }

    public String getSubText01() {
        return subText01;
    }

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }

    public String getSubText() {
        return subText;
    }


    public boolean isExpandable() {
        return isExpandable;
    }


}
========================================================================================================
Create InterFace:

public interface ItemClickListener {

    void onClick(View view, int position, boolean isLongClick);

}
========================================================================================================

MainActivity.java
===========================
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.Button;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    RecyclerView list;
    RecyclerView.LayoutManager layoutManager;
    List<Item> items = new ArrayList<>();
    Button button_make,button_make01;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button_make = findViewById(R.id.button_make);
        button_make01 = findViewById(R.id.button_make01);


        list = (RecyclerView) findViewById(R.id.recycler);
        list.setHasFixedSize(true);
        layoutManager = new LinearLayoutManager(this);
        list.setLayoutManager(layoutManager);

        setPointer();
    }

    private void setPointer() {
        button_make.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Item item = new Item("Requests for food", "5","Nazareth","Extra care" ,true);
                items.add(item);
                MyAdapter adapter = new MyAdapter(items);
                list.setAdapter(adapter);
            }
        });
        button_make01.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Item item = new Item ("Food for pick up", "10","Haifa","Extra care",true);
                items.add(item);
                MyAdapter adapter = new MyAdapter(items);
                list.setAdapter(adapter);
            }
        });


    }



}
=================================================================================================================

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="com.arabiaexample.amjad.myapplication.MainActivity">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler"
        android:layout_width="350dp"
        android:layout_height="400dp"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="49dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintHorizontal_bias="1.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.904">

    </android.support.v7.widget.RecyclerView>

    <Button
        android:id="@+id/button_make"
        android:layout_width="wrap_content"
        android:layout_height="50dp"
        android:layout_alignEnd="@+id/recycler"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="27dp"
        android:text="New Push for family" />

    <Button
        android:id="@+id/button_make01"
        android:layout_width="wrap_content"
        android:layout_height="50dp"

        android:layout_alignStart="@+id/recycler"
        android:layout_below="@+id/recycler"
        android:text="new push from donate" />

</RelativeLayout>
====================================================================================================

activity_with_child.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"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginBottom="1dp"
    android:background="#7986CB"
    android:padding="5dp">

    <RelativeLayout
        android:id="@+id/relativelayout01"
        android:layout_width="40dp"
        android:layout_height="43dp"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true">


        <View
            android:id="@+id/button1"
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:layout_alignParentEnd="true"
            android:layout_centerVertical="true"
            android:background="@drawable/up_arrow" />


    </RelativeLayout>

    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_toLeftOf="@+id/relativelayout01"
        android:padding="8dp"
        android:text="Requests for food"
        android:textColor="#ffffff"
        android:textSize="17sp" />

    <com.github.aakira.expandablelayout.ExpandableLinearLayout
        android:id="@+id/expandableLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView"
        android:orientation="vertical"
        app:ael_duration="400"
        app:ael_expanded="false"
        app:ael_interpolator="bounce">

        <TextView
            android:id="@+id/textViewChild"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:layout_toLeftOf="@+id/relativelayout01"
            android:padding="8dp"
            android:text="this is child item 00"
            android:textColor="#ead6d6"
            android:textSize="14sp" />

        <TextView
            android:id="@+id/textViewChild01"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:layout_toLeftOf="@+id/relativelayout01"
            android:padding="8dp"
            android:text="this is child item 01"
            android:textColor="#ead6d6"
            android:textSize="14sp" />

        <TextView
            android:id="@+id/textViewChild02"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:layout_toLeftOf="@+id/relativelayout01"
            android:padding="8dp"
            android:text="this is child item 02"
            android:textColor="#ead6d6"
            android:textSize="14sp" />


    </com.github.aakira.expandablelayout.ExpandableLinearLayout>

    <Button
        android:id="@+id/button01"
        android:layout_width="100dp"
        android:layout_height="40dp"
        android:layout_below="@+id/textView"
        android:layout_marginEnd="25dp"
        android:layout_toStartOf="@+id/relativelayout01"
        android:text="button 01"
        android:textAllCaps="false"
        android:visibility="gone" />

    <Button
        android:id="@+id/button02"
        android:layout_width="100dp"
        android:layout_height="40dp"
        android:layout_alignStart="@+id/button01"
        android:layout_below="@+id/button01"
        android:text="button 02"
        android:textAllCaps="false"
        android:visibility="gone" />

    <Button
        android:id="@+id/button03"
        android:layout_width="100dp"
        android:layout_height="40dp"
        android:layout_alignStart="@+id/button02"
        android:layout_below="@+id/button02"
        android:text="button 03"
        android:textAllCaps="false"
        android:visibility="gone" />


</RelativeLayout>
============================================================================================

MyAdapter.java
------------------
import android.animation.ObjectAnimator;
import android.content.Context;
import android.graphics.Color;
import android.support.v7.widget.RecyclerView;
import android.util.SparseBooleanArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.github.aakira.expandablelayout.ExpandableLayoutListenerAdapter;
import com.github.aakira.expandablelayout.ExpandableLinearLayout;
import com.github.aakira.expandablelayout.Utils;

import java.util.List;




class MyViewHolderWithChild extends RecyclerView.ViewHolder implements View.OnClickListener{

    public TextView textView, textViewChild,textViewChild01,textViewChild02;
    public RelativeLayout button;
    public Button send_messenger_button;
    public ExpandableLinearLayout expandableLayout;
    public Button button01, button02, button03;
    ItemClickListener itemClickListener;


    public MyViewHolderWithChild(View itemView) {
        super(itemView);
        textView = (TextView) itemView.findViewById(R.id.textView);
        textViewChild = (TextView) itemView.findViewById(R.id.textViewChild);
        textViewChild01= itemView.findViewById(R.id.textViewChild01);
        textViewChild02= itemView.findViewById(R.id.textViewChild02);
        button01 = itemView.findViewById(R.id.button01);
        button02 = itemView.findViewById(R.id.button02);
        button03 = itemView.findViewById(R.id.button03);

        button = (RelativeLayout) itemView.findViewById(R.id.relativelayout01);

        expandableLayout = (ExpandableLinearLayout) itemView.findViewById(R.id.expandableLayout);

        itemView.setOnClickListener(this);
    }

    public void setItemClickListener(ItemClickListener itemClickListener) {
        this.itemClickListener = itemClickListener;
    }

    @Override
    public void onClick(View view) {
        itemClickListener.onClick(view,getAdapterPosition(),false);
    }
}








public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    List<Item> items;
    Context context;
    SparseBooleanArray expandState = new SparseBooleanArray();

    public MyAdapter(List<Item> items) {
        this.items = items;
        for (int i = 0; i < items.size(); i += 1) {
            expandState.append(i, false);
        }
    }

    @Override
    public int getItemViewType(int position) {
        if (items.get(position).isExpandable()) {
            return 1;
        } else {
            return 0;
        }
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        this.context = parent.getContext();

            LayoutInflater inflater = LayoutInflater.from(context);
            View view = inflater.inflate(R.layout.layout_with_child, parent, false);
            return new MyViewHolderWithChild(view);

    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {

        switch (holder.getItemViewType()) {

            case 1: {
                final MyViewHolderWithChild viewHolder = (MyViewHolderWithChild) holder;
                final Item item = items.get(position);
                viewHolder.setIsRecyclable(false);
                viewHolder.textView.setText(item.getText());

                viewHolder.expandableLayout.setInRecyclerView(true);
                viewHolder.expandableLayout.setExpanded(expandState.get(position));
                viewHolder.expandableLayout.setListener(new ExpandableLayoutListenerAdapter() {
                    @Override
                    public void onAnimationStart() {

                    }

                    @Override
                    public void onAnimationEnd() {

                    }

                    @Override
                    public void onPreOpen() {
                        changeRotate((RelativeLayout) viewHolder.button, 0f, 180f).start();
                        expandState.put(position, true);
                        viewHolder.button01.setVisibility(View.VISIBLE);
                        viewHolder.button02.setVisibility(View.VISIBLE);
                        viewHolder.button03.setVisibility(View.VISIBLE);
                        viewHolder.textView.setTextColor(Color.RED);
                    }

                    @Override
                    public void onPreClose() {
                        changeRotate((RelativeLayout) viewHolder.button, 180f, 0f).start();
                        expandState.put(position, false);
                        viewHolder.button01.setVisibility(View.GONE);
                        viewHolder.button02.setVisibility(View.GONE);
                        viewHolder.button03.setVisibility(View.GONE);
                        viewHolder.textView.setTextColor(Color.WHITE);
                    }

                });

                viewHolder.button.setRotation(expandState.get(position) ? 180f : 0f);
                viewHolder.button.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        // Expandable child item
                        viewHolder.expandableLayout.toggle();

                    }
                });


                viewHolder.textViewChild.setText(items.get(position).getSubText());
                viewHolder.textViewChild01.setText(items.get(position).getSubText01());
                viewHolder.textViewChild02.setText(items.get(position).getSubText02());


                viewHolder.textViewChild.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Toast.makeText(context, "Child Item Click" + items.get(position).getSubText(), Toast.LENGTH_SHORT).show();
                    }
                });

                viewHolder.setItemClickListener(new ItemClickListener() {
                    @Override
                    public void onClick(View view, int position, boolean isLongClick) {
                        Toast.makeText(context, "With child click :" + items.get(position).getText(), Toast.LENGTH_SHORT).show();
                    }
                });
            }
            break;
            default:
                break;
        }

    }

    private ObjectAnimator changeRotate(RelativeLayout button, float from, float to) {

        ObjectAnimator animator = ObjectAnimator.ofFloat(button, "rotation", from, to);
        animator.setDuration(300);
        animator.setInterpolator(Utils.createInterpolator(Utils.LINEAR_INTERPOLATOR));
        return animator;
    }

    @Override
    public int getItemCount() {
        return items.size();
    }
}
========================================================================================================
Create Drawable:

up_arrow.xml
------------------
<vector xmlns:android="http://schemas.android.com/apk/res/android"
        android:width="24dp"
        android:height="24dp"
        android:viewportWidth="24.0"
        android:viewportHeight="24.0">
    <path
        android:fillColor="#FF000000"
        android:pathData="M7.41,15.41L12,10.83l4.59,4.58L18,14l-6,-6 -6,6z"/>
</vector>