Android RecyclerView Swipe to Multiple Options

Post Views: 414

Hello Friends, Today I am going to share Android RecyclerView swipe to multiple options code. Recently I was working on an app in which I was required to add swipe to delete feature which I already shared in my previous post. But, while finding the solution for swipe to delete feature I also found this solution as well. So, I thought to share AndroidStudio Project, just to help you, me and others. 😉

So, here is the code

MainActivity.java

package com.zatackcoder.swipetomultipleoption;

import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.RecyclerView;

import com.google.android.material.snackbar.Snackbar;

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

public class MainActivity extends AppCompatActivity {

    RecyclerView itemsContainerRV;
    RecyclerViewAdapter itemAdapter;

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

        List<String> data = new ArrayList();
        for (int i = 1; i <= 20; i++) {
            data.add("Item " + i);
        }

        itemsContainerRV = findViewById(R.id.itemsContainerRV);
        itemAdapter = new RecyclerViewAdapter(this, data);
        itemAdapter.notifyDataSetChanged();
        itemsContainerRV.setAdapter(itemAdapter);

        SwipeHelper swipeHelper = new SwipeHelper(this) {
            @Override
            public void instantiateUnderlayButton(RecyclerView.ViewHolder viewHolder, List<UnderlayButton> underlayButtons) {
                underlayButtons.add(new SwipeHelper.UnderlayButton(
                        "Delete",
                        0,
                        Color.parseColor("#FF3C30"),
                        new SwipeHelper.UnderlayButtonClickListener() {
                            @Override
                            public void onClick(final int pos) {
                                final String item = itemAdapter.getData().get(pos);
                                itemAdapter.removeItem(pos);

                                Snackbar snackbar = Snackbar.make(itemsContainerRV, "Item was removed from the list.", Snackbar.LENGTH_LONG);
                                snackbar.setAction("UNDO", new View.OnClickListener() {
                                    @Override
                                    public void onClick(View view) {
                                        itemAdapter.restoreItem(item, pos);
                                        itemsContainerRV.scrollToPosition(pos);
                                    }
                                });

                                snackbar.setActionTextColor(Color.YELLOW);
                                snackbar.show();
                            }
                        }
                ));
                underlayButtons.add(new SwipeHelper.UnderlayButton(
                        "Like",
                        0,
                        Color.parseColor("#FF9502"),
                        new SwipeHelper.UnderlayButtonClickListener() {
                            @Override
                            public void onClick(int pos) {
                                Toast.makeText(getApplicationContext(), "You clicked like on item position " + pos, Toast.LENGTH_LONG).show();
                            }
                        }
                ));
                underlayButtons.add(new SwipeHelper.UnderlayButton(
                        "Share",
                        0,
                        Color.parseColor("#C7C7CB"),
                        new SwipeHelper.UnderlayButtonClickListener() {
                            @Override
                            public void onClick(int pos) {
                                Toast.makeText(getApplicationContext(), "You clicked share on item position " + pos, Toast.LENGTH_LONG).show();
                            }
                        }
                ));
            }
        };
        swipeHelper.attachToRecyclerView(itemsContainerRV);
    }
}

package com.zatackcoder.swipetomultipleoption;

import android.graphics.Color;

import android.os.Bundle;

import android.view.View;

import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import androidx.recyclerview.widget.RecyclerView;

import com.google.android.material.snackbar.Snackbar;

import java.util.ArrayList;

import java.util.List;

public class MainActivity extends AppCompatActivity {

RecyclerView itemsContainerRV;

RecyclerViewAdapter itemAdapter;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

List<String> data = new ArrayList();

for (int i = 1; i <= 20; i++) {

data.add("Item " + i);

}

itemsContainerRV = findViewById(R.id.itemsContainerRV);

itemAdapter = new RecyclerViewAdapter(this, data);

itemAdapter.notifyDataSetChanged();

itemsContainerRV.setAdapter(itemAdapter);

SwipeHelper swipeHelper = new SwipeHelper(this) {

@Override

public void instantiateUnderlayButton(RecyclerView.ViewHolder viewHolder, List<UnderlayButton> underlayButtons) {

underlayButtons.add(new SwipeHelper.UnderlayButton(

"Delete",

Color.parseColor("#FF3C30"),

new SwipeHelper.UnderlayButtonClickListener() {

@Override

public void onClick(final int pos) {

final String item = itemAdapter.getData().get(pos);

itemAdapter.removeItem(pos);

Snackbar snackbar = Snackbar.make(itemsContainerRV, "Item was removed from the list.", Snackbar.LENGTH_LONG);

snackbar.setAction("UNDO", new View.OnClickListener() {

@Override

public void onClick(View view) {

itemAdapter.restoreItem(item, pos);

itemsContainerRV.scrollToPosition(pos);

}

});

snackbar.setActionTextColor(Color.YELLOW);

snackbar.show();

}

));

underlayButtons.add(new SwipeHelper.UnderlayButton(

"Like",

Color.parseColor("#FF9502"),

new SwipeHelper.UnderlayButtonClickListener() {

@Override

public void onClick(int pos) {

Toast.makeText(getApplicationContext(), "You clicked like on item position " + pos, Toast.LENGTH_LONG).show();

}

));

underlayButtons.add(new SwipeHelper.UnderlayButton(

"Share",

Color.parseColor("#C7C7CB"),

new SwipeHelper.UnderlayButtonClickListener() {

@Override

public void onClick(int pos) {

Toast.makeText(getApplicationContext(), "You clicked share on item position " + pos, Toast.LENGTH_LONG).show();

}

));

}

};

swipeHelper.attachToRecyclerView(itemsContainerRV);

}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:background="#918585"
    tools:context=".MainActivity">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/itemsContainerRV"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />
    
</androidx.constraintlayout.widget.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>

<androidx.constraintlayout.widget.ConstraintLayout 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:background="#918585"

tools:context=".MainActivity">

<androidx.recyclerview.widget.RecyclerView

android:id="@+id/itemsContainerRV"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager" />

</androidx.constraintlayout.widget.ConstraintLayout>

RecyclerViewAdapter.java

package com.zatackcoder.swipetomultipleoption;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import java.util.List;

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

    Context context;
    List<String> data;

    public RecyclerViewAdapter(Context context, List<String> data) {
        this.context = context;
        this.data = data;
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(context).inflate(R.layout.item, parent, false);
        return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(@NonNull final ViewHolder holder, final int position) {
        holder.itemNameTV.setText(data.get(position));
        holder.itemNameTV.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String item = data.get(position);
                Toast.makeText(context, "You clicked " + item, Toast.LENGTH_LONG).show();
            }
        });
    }

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

    public void removeItem(int position) {
        data.remove(position);
        notifyItemRemoved(position);
    }

    public void restoreItem(String item, int position) {
        data.add(position, item);
        notifyItemInserted(position);
    }

    public List<String> getData() {
        return data;
    }

    static class ViewHolder extends RecyclerView.ViewHolder {

        View container;
        TextView itemNameTV;

        public ViewHolder(View view) {
            super(view);
            container = view;
            itemNameTV = view.findViewById(R.id.itemNameTV);
        }

    }
}

package com.zatackcoder.swipetomultipleoption;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.TextView;

import android.widget.Toast;

import androidx.annotation.NonNull;

import androidx.recyclerview.widget.RecyclerView;

import java.util.List;

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

Context context;

List<String> data;

public RecyclerViewAdapter(Context context, List<String> data) {

this.context = context;

this.data = data;

}

@NonNull

@Override

public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {

View v = LayoutInflater.from(context).inflate(R.layout.item, parent, false);

return new ViewHolder(v);

}

@Override

public void onBindViewHolder(@NonNull final ViewHolder holder, final int position) {

holder.itemNameTV.setText(data.get(position));

holder.itemNameTV.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

String item = data.get(position);

Toast.makeText(context, "You clicked " + item, Toast.LENGTH_LONG).show();

}

});

}

@Override

public int getItemCount() {

return data.size();

}

public void removeItem(int position) {

data.remove(position);

notifyItemRemoved(position);

}

public void restoreItem(String item, int position) {

data.add(position, item);

notifyItemInserted(position);

}

public List<String> getData() {

return data;

}

static class ViewHolder extends RecyclerView.ViewHolder {

View container;

TextView itemNameTV;

public ViewHolder(View view) {

super(view);

container = view;

itemNameTV = view.findViewById(R.id.itemNameTV);

}

SwipeHelper.java

package com.zatackcoder.swipetomultipleoption;


import android.content.Context;
import android.content.res.Resources;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.RectF;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;

import androidx.recyclerview.widget.ItemTouchHelper;
import androidx.recyclerview.widget.RecyclerView;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Queue;

public abstract class SwipeHelper extends ItemTouchHelper.SimpleCallback {

    public static final int BUTTON_WIDTH = 200;
    private RecyclerView recyclerView;
    private List<UnderlayButton> buttons;
    private GestureDetector gestureDetector;
    private int swipedPos = -1;
    private float swipeThreshold = 0.5f;
    private Map<Integer, List<UnderlayButton>> buttonsBuffer;
    private Queue<Integer> recoverQueue;

    private GestureDetector.SimpleOnGestureListener gestureListener = new GestureDetector.SimpleOnGestureListener() {
        @Override
        public boolean onSingleTapConfirmed(MotionEvent e) {
            for (UnderlayButton button : buttons) {
                if (button.onClick(e.getX(), e.getY()))
                    break;
            }
            return true;
        }
    };

    private View.OnTouchListener onTouchListener = new View.OnTouchListener() {
        @Override
        public boolean onTouch(View view, MotionEvent e) {
            if (swipedPos < 0) return false;
            Point point = new Point((int) e.getRawX(), (int) e.getRawY());

            RecyclerView.ViewHolder swipedViewHolder = recyclerView.findViewHolderForAdapterPosition(swipedPos);
            View swipedItem = swipedViewHolder.itemView;
            Rect rect = new Rect();
            swipedItem.getGlobalVisibleRect(rect);

            if (e.getAction() == MotionEvent.ACTION_DOWN || e.getAction() == MotionEvent.ACTION_UP || e.getAction() == MotionEvent.ACTION_MOVE) {
                if (rect.top < point.y && rect.bottom > point.y)
                    gestureDetector.onTouchEvent(e);
                else {
                    recoverQueue.add(swipedPos);
                    swipedPos = -1;
                    recoverSwipedItem();
                }
            }
            return false;
        }
    };

    public SwipeHelper(Context context) {
        super(0, ItemTouchHelper.LEFT);
        this.buttons = new ArrayList<>();
        this.gestureDetector = new GestureDetector(context, gestureListener);
        buttonsBuffer = new HashMap<>();
        recoverQueue = new LinkedList<Integer>() {
            @Override
            public boolean add(Integer o) {
                if (contains(o))
                    return false;
                else
                    return super.add(o);
            }
        };
    }


    @Override
    public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
        return false;
    }

    @Override
    public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
        int pos = viewHolder.getAdapterPosition();

        if (swipedPos != pos)
            recoverQueue.add(swipedPos);

        swipedPos = pos;

        if (buttonsBuffer.containsKey(swipedPos))
            buttons = buttonsBuffer.get(swipedPos);
        else
            buttons.clear();

        buttonsBuffer.clear();
        swipeThreshold = 0.5f * buttons.size() * BUTTON_WIDTH;
        recoverSwipedItem();
    }

    @Override
    public float getSwipeThreshold(RecyclerView.ViewHolder viewHolder) {
        return swipeThreshold;
    }

    @Override
    public float getSwipeEscapeVelocity(float defaultValue) {
        return 0.1f * defaultValue;
    }

    @Override
    public float getSwipeVelocityThreshold(float defaultValue) {
        return 5.0f * defaultValue;
    }

    @Override
    public void onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
        int pos = viewHolder.getAdapterPosition();
        float translationX = dX;
        View itemView = viewHolder.itemView;

        if (pos < 0) {
            swipedPos = pos;
            return;
        }

        if (actionState == ItemTouchHelper.ACTION_STATE_SWIPE) {
            if (dX < 0) {
                List<UnderlayButton> buffer = new ArrayList<>();

                if (!buttonsBuffer.containsKey(pos)) {
                    instantiateUnderlayButton(viewHolder, buffer);
                    buttonsBuffer.put(pos, buffer);
                } else {
                    buffer = buttonsBuffer.get(pos);
                }

                translationX = dX * buffer.size() * BUTTON_WIDTH / itemView.getWidth();
                drawButtons(c, itemView, buffer, pos, translationX);
            }
        }

        super.onChildDraw(c, recyclerView, viewHolder, translationX, dY, actionState, isCurrentlyActive);
    }

    private synchronized void recoverSwipedItem() {
        while (!recoverQueue.isEmpty()) {
            int pos = recoverQueue.poll();
            if (pos > -1) {
                recyclerView.getAdapter().notifyItemChanged(pos);
            }
        }
    }

    private void drawButtons(Canvas c, View itemView, List<UnderlayButton> buffer, int pos, float dX) {
        float right = itemView.getRight();
        float dButtonWidth = (-1) * dX / buffer.size();

        for (UnderlayButton button : buffer) {
            float left = right - dButtonWidth;
            button.onDraw(
                    c,
                    new RectF(
                            left,
                            itemView.getTop(),
                            right,
                            itemView.getBottom()
                    ),
                    pos
            );

            right = left;
        }
    }

    public void attachToRecyclerView(RecyclerView recyclerView) {
        this.recyclerView = recyclerView;
        this.recyclerView.setOnTouchListener(onTouchListener);
        ItemTouchHelper itemTouchHelper = new ItemTouchHelper(this);
        itemTouchHelper.attachToRecyclerView(this.recyclerView);
    }

    public abstract void instantiateUnderlayButton(RecyclerView.ViewHolder viewHolder, List<UnderlayButton> underlayButtons);

    public interface UnderlayButtonClickListener {
        void onClick(int pos);
    }

    public static class UnderlayButton {
        private String text;
        private int imageResId;
        private int color;
        private int pos;
        private RectF clickRegion;
        private UnderlayButtonClickListener clickListener;

        public UnderlayButton(String text, int imageResId, int color, UnderlayButtonClickListener clickListener) {
            this.text = text;
            this.imageResId = imageResId;
            this.color = color;
            this.clickListener = clickListener;
        }

        public boolean onClick(float x, float y) {
            if (clickRegion != null && clickRegion.contains(x, y)) {
                clickListener.onClick(pos);
                return true;
            }

            return false;
        }

        public void onDraw(Canvas c, RectF rect, int pos) {
            Paint p = new Paint();

            // Draw background
            p.setColor(color);
            c.drawRect(rect, p);

            // Draw Text
            p.setColor(Color.WHITE);
            //p.setTextSize(LayoutHelper.getPx(MyApplication.getAppContext(), 12));
            p.setTextSize(Resources.getSystem().getDisplayMetrics().density * 12);

            Rect r = new Rect();
            float cHeight = rect.height();
            float cWidth = rect.width();
            p.setTextAlign(Paint.Align.LEFT);
            p.getTextBounds(text, 0, text.length(), r);
            float x = cWidth / 2f - r.width() / 2f - r.left;
            float y = cHeight / 2f + r.height() / 2f - r.bottom;
            c.drawText(text, rect.left + x, rect.top + y, p);

            clickRegion = rect;
            this.pos = pos;
        }
    }
}

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package com.zatackcoder.swipetomultipleoption;

import android.content.Context;

import android.content.res.Resources;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.graphics.Point;

import android.graphics.Rect;

import android.graphics.RectF;

import android.view.GestureDetector;

import android.view.MotionEvent;

import android.view.View;

import androidx.recyclerview.widget.ItemTouchHelper;

import androidx.recyclerview.widget.RecyclerView;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.LinkedList;

import java.util.List;

import java.util.Map;

import java.util.Queue;

public abstract class SwipeHelper extends ItemTouchHelper.SimpleCallback {

public static final int BUTTON_WIDTH = 200;

private RecyclerView recyclerView;

private List<UnderlayButton> buttons;

private GestureDetector gestureDetector;

private int swipedPos = -1;

private float swipeThreshold = 0.5f;

private Map<Integer, List<UnderlayButton>> buttonsBuffer;

private Queue<Integer> recoverQueue;

private GestureDetector.SimpleOnGestureListener gestureListener = new GestureDetector.SimpleOnGestureListener() {

@Override

public boolean onSingleTapConfirmed(MotionEvent e) {

for (UnderlayButton button : buttons) {

if (button.onClick(e.getX(), e.getY()))

break;

}

return true;

}

};

private View.OnTouchListener onTouchListener = new View.OnTouchListener() {

@Override

public boolean onTouch(View view, MotionEvent e) {

if (swipedPos < 0) return false;

Point point = new Point((int) e.getRawX(), (int) e.getRawY());

RecyclerView.ViewHolder swipedViewHolder = recyclerView.findViewHolderForAdapterPosition(swipedPos);

View swipedItem = swipedViewHolder.itemView;

Rect rect = new Rect();

swipedItem.getGlobalVisibleRect(rect);

if (e.getAction() == MotionEvent.ACTION_DOWN || e.getAction() == MotionEvent.ACTION_UP || e.getAction() == MotionEvent.ACTION_MOVE) {

if (rect.top < point.y && rect.bottom > point.y)

gestureDetector.onTouchEvent(e);

else {

recoverQueue.add(swipedPos);

swipedPos = -1;

recoverSwipedItem();

}

return false;

}

};

public SwipeHelper(Context context) {

super(0, ItemTouchHelper.LEFT);

this.buttons = new ArrayList<>();

this.gestureDetector = new GestureDetector(context, gestureListener);

buttonsBuffer = new HashMap<>();

recoverQueue = new LinkedList<Integer>() {

@Override

public boolean add(Integer o) {

if (contains(o))

return false;

else

return super.add(o);

}

};

}

@Override

public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {

return false;

}

@Override

public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {

int pos = viewHolder.getAdapterPosition();

if (swipedPos != pos)

recoverQueue.add(swipedPos);

swipedPos = pos;

if (buttonsBuffer.containsKey(swipedPos))

buttons = buttonsBuffer.get(swipedPos);

else

buttons.clear();

buttonsBuffer.clear();

swipeThreshold = 0.5f * buttons.size() * BUTTON_WIDTH;

recoverSwipedItem();

}

@Override

public float getSwipeThreshold(RecyclerView.ViewHolder viewHolder) {

return swipeThreshold;

}

@Override

public float getSwipeEscapeVelocity(float defaultValue) {

return 0.1f * defaultValue;

}

@Override

public float getSwipeVelocityThreshold(float defaultValue) {

return 5.0f * defaultValue;

}

@Override

public void onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {

int pos = viewHolder.getAdapterPosition();

float translationX = dX;

View itemView = viewHolder.itemView;

if (pos < 0) {

swipedPos = pos;

return;

}

if (actionState == ItemTouchHelper.ACTION_STATE_SWIPE) {

if (dX < 0) {

List<UnderlayButton> buffer = new ArrayList<>();

if (!buttonsBuffer.containsKey(pos)) {

instantiateUnderlayButton(viewHolder, buffer);

buttonsBuffer.put(pos, buffer);

} else {

buffer = buttonsBuffer.get(pos);

}

translationX = dX * buffer.size() * BUTTON_WIDTH / itemView.getWidth();

drawButtons(c, itemView, buffer, pos, translationX);

}

super.onChildDraw(c, recyclerView, viewHolder, translationX, dY, actionState, isCurrentlyActive);

}

private synchronized void recoverSwipedItem() {

while (!recoverQueue.isEmpty()) {

int pos = recoverQueue.poll();

if (pos > -1) {

recyclerView.getAdapter().notifyItemChanged(pos);

}

private void drawButtons(Canvas c, View itemView, List<UnderlayButton> buffer, int pos, float dX) {

float right = itemView.getRight();

float dButtonWidth = (-1) * dX / buffer.size();

for (UnderlayButton button : buffer) {

float left = right - dButtonWidth;

button.onDraw(

new RectF(

left,

itemView.getTop(),

right,

itemView.getBottom()

pos

);

right = left;

}

public void attachToRecyclerView(RecyclerView recyclerView) {

this.recyclerView = recyclerView;

this.recyclerView.setOnTouchListener(onTouchListener);

ItemTouchHelper itemTouchHelper = new ItemTouchHelper(this);

itemTouchHelper.attachToRecyclerView(this.recyclerView);

}

public abstract void instantiateUnderlayButton(RecyclerView.ViewHolder viewHolder, List<UnderlayButton> underlayButtons);

public interface UnderlayButtonClickListener {

void onClick(int pos);

}

public static class UnderlayButton {

private String text;

private int imageResId;

private int color;

private int pos;

private RectF clickRegion;

private UnderlayButtonClickListener clickListener;

public UnderlayButton(String text, int imageResId, int color, UnderlayButtonClickListener clickListener) {

this.text = text;

this.imageResId = imageResId;

this.color = color;

this.clickListener = clickListener;

}

public boolean onClick(float x, float y) {

if (clickRegion != null && clickRegion.contains(x, y)) {

clickListener.onClick(pos);

return true;

}

return false;

}

public void onDraw(Canvas c, RectF rect, int pos) {

Paint p = new Paint();

// Draw background

p.setColor(color);

c.drawRect(rect, p);

// Draw Text

p.setColor(Color.WHITE);

//p.setTextSize(LayoutHelper.getPx(MyApplication.getAppContext(), 12));

p.setTextSize(Resources.getSystem().getDisplayMetrics().density * 12);

Rect r = new Rect();

float cHeight = rect.height();

float cWidth = rect.width();

p.setTextAlign(Paint.Align.LEFT);

p.getTextBounds(text, 0, text.length(), r);

float x = cWidth / 2f - r.width() / 2f - r.left;

float y = cHeight / 2f + r.height() / 2f - r.bottom;

c.drawText(text, rect.left + x, rect.top + y, p);

clickRegion = rect;

this.pos = pos;

}

item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="8dp"
    android:layout_marginTop="4dp"
    android:layout_marginLeft="2dp"
    android:layout_marginRight="2dp"
    android:background="#FFFFFF">

    <TextView
        android:id="@+id/itemNameTV"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="20sp"
        android:textStyle="bold"
        android:textColor="#000000"
        android:padding="10dp"
        android:text="Item"/>

</LinearLayout >

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:padding="8dp"

android:layout_marginTop="4dp"

android:layout_marginLeft="2dp"

android:layout_marginRight="2dp"

android:background="#FFFFFF">

<TextView

android:id="@+id/itemNameTV"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:textSize="20sp"

android:textStyle="bold"

android:textColor="#000000"

android:padding="10dp"

android:text="Item"/>

</LinearLayout >

Video

AndroidStudio Project Download