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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 |
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); } } |
activity_main.xml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 |
<?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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 |
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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 |
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; } } } |
item.xml
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 |
<?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
Reference
https://stackoverflow.com/questions/44965278/recyclerview-itemtouchhelper-buttons-on-swipe
Thanks for Stoping by
If you find this helpful then please share
Comments