RecyclerView add,remove,delete

implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:design:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'

<?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">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/darker_gray"
        android:padding="4dp"
        android:scrollbars="vertical"
        android:layout_marginBottom="100dp"/>


        <EditText
            android:id="@+id/editext_insert"
            android:inputType="number"
            android:layout_alignParentBottom="true"
            android:layout_alignParentStart="true"
            android:layout_marginStart="15dp"
            android:layout_marginBottom="25dp"
            android:layout_width="40dp"
            android:layout_height="wrap_content" />

        <Button
            android:id="@+id/button_insert"
            android:text="insert"
            android:layout_alignParentBottom="true"
            android:layout_toEndOf="@+id/editext_insert"
            android:layout_marginBottom="25dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

    <EditText
        android:id="@+id/editext_remove"
        android:inputType="number"
        android:layout_alignParentBottom="true"
        android:layout_toLeftOf="@+id/button_remove"
        android:layout_marginStart="15dp"
        android:layout_marginBottom="25dp"
        android:layout_width="40dp"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/button_remove"
        android:text="remove"
        android:layout_alignParentBottom="true"
        android:layout_alignParentEnd="true"
        android:layout_marginBottom="25dp"
        android:layout_marginRight="50dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />



</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <RelativeLayout
        android:layout_margin="4dp"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <ImageView
            android:id="@+id/imageView"
            android:padding="2dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/textView"
            android:layout_alignParentTop="true"
            android:layout_toEndOf="@id/imageView"
            android:text="Line 1"
            android:textColor="@android:color/black"
            android:textSize="20sp"
            android:textStyle="bold"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <TextView
            android:id="@+id/textView2"
            android:layout_below="@id/textView"
            android:layout_toEndOf="@id/imageView"
            android:layout_marginStart="8dp"
            android:text="Line 2"
            android:textSize="15sp"
            android:textStyle="bold"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />

        <ImageView
            android:id="@+id/image_delete"
            android:layout_width="50dp"
            android:layout_height="50dp"
            android:layout_alignParentTop="true"
            android:layout_alignParentEnd="true"
            android:src="@drawable/ic_delete_black_24dp" />
    </RelativeLayout>

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

package com.example.devat.myapplication;

public class ExampleItem {

    private int mImageResource;
    private String mText1;
    private String mText2;

    public ExampleItem(int mImageResource, String mText1, String mText2) {
        this.mImageResource = mImageResource;
        this.mText1 = mText1;
        this.mText2 = mText2;
    }

    public int getmImageResource() {
        return mImageResource;
    }
    // 
    public void changeTExt1(String text ) {
        mText1 = text;
    }

    public String getmText1() {
        return mText1;
    }

    public String getmText2() {
        return mText2;
    }
}

public class MainActivity extends AppCompatActivity {
    private ArrayList<ExampleItem> exampleItems = new ArrayList<>();
    private RecyclerView recyclerView;
    private ExampleAdapter adapter;
    private RecyclerView.LayoutManager layoutManager;

    private Button buttonInsert;
    private Button buttonRemove;
    private EditText editTextInsert;
    private EditText editTextRemove;


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

        createExampleList();
        buildRecyclerView();
        setButtons();
    }

    private void setButtons() {
        buttonInsert = findViewById(R.id.button_insert);
        buttonRemove = findViewById(R.id.button_remove);
        editTextInsert = findViewById(R.id.editext_insert);
        editTextRemove = findViewById(R.id.editext_remove);

        buttonInsert.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                int position = Integer.parseInt(editTextInsert.getText().toString().trim());
                insertItem(position);
            }
        });

        buttonRemove.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                int position = Integer.parseInt(editTextRemove.getText().toString().trim());
                removeItem(position);
            }
        });
    }

    private void insertItem(int position) {
        //Todo modify insert division , out of index check
        exampleItems.add(new ExampleItem(R.drawable.ic_aspect_ratio_black_24dp, "new Item At Position  " + position, "Line " + position));
        adapter.notifyItemInserted(position);
    }

    private void removeItem(int position) {
        // Todo out of index  chceck
        exampleItems.remove(position);
        adapter.notifyItemRemoved(position);
    }

    public void changeItem(int position, String text) {
        exampleItems.get(position).changeTExt1(text);
        adapter.notifyItemChanged(position);
    }

    private void createExampleList() {
        exampleItems = new ArrayList<>();
        exampleItems.add(new ExampleItem(R.drawable.ic_android_black_24dp, ":Line 1", "Lind 2"));
        exampleItems.add(new ExampleItem(R.drawable.ic_adb_black_24dp, ":Line 3", "Lind 4"));
        exampleItems.add(new ExampleItem(R.drawable.ic_aspect_ratio_black_24dp, ":Line 5", "Lind 6"));
        exampleItems.add(new ExampleItem(R.drawable.ic_aspect_ratio_black_24dp, ":Line 7", "Lind 8"));
        exampleItems.add(new ExampleItem(R.drawable.ic_aspect_ratio_black_24dp, ":Line 9", "Lind 10"));
    }

    private void buildRecyclerView() {
        recyclerView = findViewById(R.id.recyclerView);
        recyclerView.setHasFixedSize(true);
        layoutManager = new LinearLayoutManager(this);
        adapter = new ExampleAdapter(exampleItems);

        recyclerView.setLayoutManager(layoutManager);
        recyclerView.setAdapter(adapter);

        adapter.setOnItemClickListener(new ExampleAdapter.OnItemClickListener() {
            @Override
            public void onItemClick(int position) {
                changeItem(position, "Clicked");
            }

            @Override
            public void onDeleteClick(int position) {
                removeItem(position);
            }
        });
    }
}

public class ExampleAdapter extends RecyclerView.Adapter<ExampleAdapter.ExampleViewHolder> {

    private ArrayList<ExampleItem> mExampleList;
    public OnItemClickListener onItemClickListener;

    public interface OnItemClickListener {
        void onItemClick(int position);
        void onDeleteClick(int position);
    }

    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
        this.onItemClickListener = onItemClickListener;
    }

    public static class ExampleViewHolder extends RecyclerView.ViewHolder {

        public ImageView imageView;
        public ImageView imageDelete;
        public TextView textView1;
        public TextView textView2;

        public ExampleViewHolder(@NonNull View itemView, final OnItemClickListener onItemClickListener) {
            super(itemView);
            imageView = itemView.findViewById(R.id.imageView);
            textView1 = itemView.findViewById(R.id.textView);
            textView2 = itemView.findViewById(R.id.textView2);
            imageDelete = itemView.findViewById(R.id.image_delete);
            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    if (onItemClickListener != null) {
                        int position = getAdapterPosition();
                        if (position != RecyclerView.NO_POSITION) {
                            onItemClickListener.onItemClick(position);
                        }
                    }
                }
            });

            imageDelete.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    if (onItemClickListener != null) {
                        int position = getAdapterPosition();
                        if (position != RecyclerView.NO_POSITION) {
                            onItemClickListener.onDeleteClick(position);
                        }
                    }
                }
            });

        }
    }

    public ExampleAdapter(ArrayList<ExampleItem> mExampleList) {
        this.mExampleList = mExampleList;
    }

    @NonNull
    @Override
    public ExampleViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item_layout, viewGroup, false);
        ExampleViewHolder viewHolder = new ExampleViewHolder(v, onItemClickListener);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull ExampleViewHolder holder, int i) {
        ExampleItem currentItem = mExampleList.get(i);
        holder.imageView.setImageResource(currentItem.getmImageResource());
        holder.textView1.setText(currentItem.getmText1());
        holder.textView2.setText(currentItem.getmText2());

    }

    @Override
    public int getItemCount() {
        return mExampleList.size();
    }


}