app/src/main/java/io/lbry/browser/MainActivity.java

@@ -11,6 +11,7 @@ import android.content.BroadcastReceiver;
 import android.content.ClipData;
 import android.content.ComponentName;
 import android.content.Context;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
@@ -36,6 +37,7 @@ import android.text.style.TypefaceSpan;
 import android.util.Base64;
 import android.util.Log;
 import android.view.KeyEvent;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.Menu;
 import android.view.WindowManager;
@@ -75,7 +77,9 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.ActionBarDrawerToggle;
+import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatDelegate;
+import androidx.appcompat.view.ActionMode;
 import androidx.constraintlayout.widget.ConstraintLayout;
 import androidx.core.app.ActivityCompat;
 import androidx.core.app.NotificationCompat;
@@ -98,6 +102,7 @@ import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
 
 import org.java_websocket.client.WebSocketClient;
 import org.java_websocket.handshake.ServerHandshake;
@@ -142,6 +147,7 @@ import io.lbry.browser.listener.FilePickerListener;
 import io.lbry.browser.listener.PIPModeListener;
 import io.lbry.browser.listener.ScreenOrientationListener;
 import io.lbry.browser.listener.SdkStatusListener;
+import io.lbry.browser.listener.SelectionModeListener;
 import io.lbry.browser.listener.StoragePermissionListener;
 import io.lbry.browser.listener.WalletBalanceListener;
 import io.lbry.browser.model.Claim;
@@ -165,6 +171,7 @@ import io.lbry.browser.tasks.lbryinc.FetchRewardsTask;
 import io.lbry.browser.tasks.LighthouseAutoCompleteTask;
 import io.lbry.browser.tasks.MergeSubscriptionsTask;
 import io.lbry.browser.tasks.claim.ResolveTask;
+import io.lbry.browser.tasks.lbryinc.NotificationDeleteTask;
 import io.lbry.browser.tasks.lbryinc.NotificationListTask;
 import io.lbry.browser.tasks.lbryinc.NotificationUpdateTask;
 import io.lbry.browser.tasks.localdata.FetchRecentUrlHistoryTask;
@@ -209,7 +216,9 @@ import lombok.Setter;
 import lombok.SneakyThrows;
 import okhttp3.OkHttpClient;
 
-public class MainActivity extends AppCompatActivity implements SdkStatusListener, SharedPreferences.OnSharedPreferenceChangeListener {
+public class MainActivity extends AppCompatActivity implements SdkStatusListener,
+        SharedPreferences.OnSharedPreferenceChangeListener,
+        ActionMode.Callback, SelectionModeListener {
     private static final String CHANNEL_ID_PLAYBACK = "io.lbry.browser.LBRY_PLAYBACK_CHANNEL";
     private static final int PLAYBACK_NOTIFICATION_ID = 3;
     private static final String SPECIAL_URL_PREFIX = "lbry://?";
@@ -244,6 +253,7 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
     public static boolean startingPermissionRequest = false;
     public static boolean startingSignInFlowActivity = false;
 
+    private ActionMode actionMode;
     private BillingClient billingClient;
     @Getter
     private boolean enteringPIPMode = false;
@@ -366,6 +376,7 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
     private MediaSessionCompat mediaSession;
     private boolean receivedStopService;
     private ActionBarDrawerToggle toggle;
+    private SwipeRefreshLayout notificationsSwipeContainer;
     private SyncSetTask syncSetTask = null;
     private List<WalletSync> pendingSyncSetQueue;
     @Getter
@@ -581,6 +592,16 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
             }
         });
 
+        notificationsSwipeContainer = findViewById(R.id.notifications_list_swipe_container);
+        notificationsSwipeContainer.setColorSchemeResources(R.color.nextLbryGreen);
+        notificationsSwipeContainer.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
+            @Override
+            public void onRefresh() {
+                notificationsSwipeContainer.setRefreshing(true);
+                loadRemoteNotifications(false);
+            }
+        });
+
         findViewById(R.id.global_now_playing_card).setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
@@ -1874,6 +1895,103 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
         }
     }
 
+    @Override
+    public boolean onCreateActionMode(ActionMode mode, Menu menu) {
+        this.actionMode = mode;
+        if (isDarkMode()) {
+            getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
+        }
+
+        actionMode.getMenuInflater().inflate(R.menu.menu_notification, menu);
+        return true;
+    }
+
+    @Override
+    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
+        return true;
+    }
+
+    @Override
+    public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
+        if (R.id.action_delete == item.getItemId()) {
+            if (notificationListAdapter != null && notificationListAdapter.getSelectedCount() > 0) {
+
+                final List<LbryNotification> selectedNotifications = new ArrayList<>(notificationListAdapter.getSelectedItems());
+                String message = getResources().getQuantityString(R.plurals.confirm_delete_notifications, selectedNotifications.size());
+                AlertDialog.Builder builder = new AlertDialog.Builder(this).
+                        setTitle(R.string.delete_selection).
+                        setMessage(message)
+                        .setPositiveButton(R.string.yes, new DialogInterface.OnClickListener() {
+                            @Override
+                            public void onClick(DialogInterface dialogInterface, int i) {
+                                handleDeleteSelectedNotifications(selectedNotifications);
+                            }
+                        }).setNegativeButton(R.string.no, null);
+                builder.show();
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public void onDestroyActionMode(ActionMode mode) {
+        if (notificationListAdapter != null) {
+            notificationListAdapter.clearSelectedItems();
+            notificationListAdapter.setInSelectionMode(false);
+            notificationListAdapter.notifyDataSetChanged();
+        }
+        if (isDarkMode()) {
+            getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
+        }
+        this.actionMode = null;
+    }
+
+    @Override
+    public void onEnterSelectionMode() {
+        startSupportActionMode(this);
+    }
+
+    @Override
+    public void onExitSelectionMode() {
+        if (actionMode != null) {
+            actionMode.finish();
+        }
+    }
+
+    @Override
+    public void onItemSelectionToggled() {
+        if (actionMode != null) {
+            actionMode.setTitle(notificationListAdapter != null ? String.valueOf(notificationListAdapter.getSelectedCount()) : "");
+            actionMode.invalidate();
+        }
+    }
+
+    private void handleDeleteSelectedNotifications(List<LbryNotification> notifications) {
+        List<Long> remoteIds = new ArrayList<>();
+        for (LbryNotification notification : notifications) {
+            remoteIds.add(notification.getRemoteId());
+        }
+        (new AsyncTask<Void, Void, Void>() {
+            protected Void doInBackground(Void... params) {
+                try {
+                    SQLiteDatabase db = dbHelper.getWritableDatabase();
+                    DatabaseHelper.deleteNotifications(notifications, db);
+                } catch (Exception ex) {
+                    // pass
+                }
+                return null;
+            }
+        }).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+        new NotificationDeleteTask(remoteIds).executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
+        if (notificationListAdapter != null) {
+            notificationListAdapter.removeNotifications(notifications);
+        }
+        if (actionMode != null) {
+            actionMode.finish();
+        }
+    }
+
     private class PlayerNotificationDescriptionAdapter implements PlayerNotificationManager.MediaDescriptionAdapter {
 
         @Override
@@ -3390,6 +3508,10 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
                 if (markRead && findViewById(R.id.notifications_container).getVisibility() == View.VISIBLE) {
                     markNotificationsRead();
                 }
+
+                if (notificationsSwipeContainer != null) {
+                    notificationsSwipeContainer.setRefreshing(false);
+                }
             }
 
             @Override
@@ -3397,6 +3519,9 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
                 // pass
                 Log.e(TAG, "error loading remote notifications", exception);
                 loadLocalNotifications();
+                if (notificationsSwipeContainer != null) {
+                    notificationsSwipeContainer.setRefreshing(false);
+                }
             }
         });
         task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
@@ -3426,6 +3551,7 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
 
                 if (notificationListAdapter == null) {
                     notificationListAdapter = new NotificationListAdapter(notifications, MainActivity.this);
+                    notificationListAdapter.setSelectionModeListener(MainActivity.this);
                     ((RecyclerView) findViewById(R.id.notifications_list)).setAdapter(notificationListAdapter);
                 } else {
                     notificationListAdapter.addNotifications(notifications);

app/src/main/java/io/lbry/browser/adapter/NotificationListAdapter.java

@@ -14,6 +14,7 @@ import androidx.recyclerview.widget.RecyclerView;
 
 import com.bumptech.glide.Glide;
 import com.bumptech.glide.request.RequestOptions;
+import com.google.android.material.snackbar.Snackbar;
 
 import java.util.ArrayList;
 import java.util.Calendar;
@@ -24,6 +25,7 @@ import java.util.List;
 import java.util.TimeZone;
 
 import io.lbry.browser.R;
+import io.lbry.browser.listener.SelectionModeListener;
 import io.lbry.browser.model.Claim;
 import io.lbry.browser.model.lbryinc.LbryNotification;
 import io.lbry.browser.ui.controls.SolidIconView;
@@ -43,15 +45,19 @@ public class NotificationListAdapter extends RecyclerView.Adapter<NotificationLi
 
     private Context context;
     private List<LbryNotification> items;
+    private List<LbryNotification> selectedItems;
     @Setter
     private NotificationClickListener clickListener;
     @Getter
     @Setter
-    private int customizeMode;
+    private boolean inSelectionMode;
+    @Setter
+    private SelectionModeListener selectionModeListener;
 
     public NotificationListAdapter(List<LbryNotification> notifications, Context context) {
         this.context = context;
         this.items = new ArrayList<>(notifications);
+        this.selectedItems = new ArrayList<>();
         Collections.sort(items, Collections.reverseOrder(new LbryNotification()));
     }
 
@@ -62,6 +68,7 @@ public class NotificationListAdapter extends RecyclerView.Adapter<NotificationLi
         protected TextView timeView;
         protected SolidIconView iconView;
         protected ImageView thumbnailView;
+        protected View selectedOverlayView;
         public ViewHolder(View v) {
             super(v);
             layoutView = v.findViewById(R.id.notification_layout);
@@ -70,12 +77,25 @@ public class NotificationListAdapter extends RecyclerView.Adapter<NotificationLi
             timeView = v.findViewById(R.id.notification_time);
             iconView = v.findViewById(R.id.notification_icon);
             thumbnailView = v.findViewById(R.id.notification_author_thumbnail);
+            selectedOverlayView = v.findViewById(R.id.notification_selected_overlay);
         }
     }
 
     public int getItemCount() {
         return items != null ? items.size() : 0;
     }
+    public List<LbryNotification> getSelectedItems() {
+        return this.selectedItems;
+    }
+    public int getSelectedCount() {
+        return selectedItems != null ? selectedItems.size() : 0;
+    }
+    public void clearSelectedItems() {
+        this.selectedItems.clear();
+    }
+    public boolean isNotificationSelected(LbryNotification notification) {
+        return selectedItems.contains(notification);
+    }
 
     public void insertNotification(LbryNotification notification, int index) {
         if (!items.contains(notification)) {
@@ -90,6 +110,12 @@ public class NotificationListAdapter extends RecyclerView.Adapter<NotificationLi
         }
         notifyDataSetChanged();
     }
+    public void removeNotifications(List<LbryNotification> notifications) {
+        for (LbryNotification notification : notifications) {
+            items.remove(notification);
+        }
+        notifyDataSetChanged();
+    }
 
     public List<String> getAuthorUrls() {
         List<String> urls = new ArrayList<>();
@@ -158,9 +184,8 @@ public class NotificationListAdapter extends RecyclerView.Adapter<NotificationLi
     @Override
     public void onBindViewHolder(NotificationListAdapter.ViewHolder vh, int position) {
         LbryNotification notification = items.get(position);
-
-
         vh.layoutView.setBackgroundColor(ContextCompat.getColor(context, notification.isSeen() ? android.R.color.transparent : R.color.nextLbryGreenSemiTransparent));
+        vh.selectedOverlayView.setVisibility(isNotificationSelected(notification) ? View.VISIBLE : View.GONE);
 
         vh.titleView.setVisibility(!Helper.isNullOrEmpty(notification.getTitle()) ? View.VISIBLE : View.GONE);
         vh.titleView.setText(notification.getTitle());
@@ -181,11 +206,49 @@ public class NotificationListAdapter extends RecyclerView.Adapter<NotificationLi
         vh.itemView.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
+                if (inSelectionMode) {
+                    toggleSelectedNotification(notification);
+                } else {
                     if (clickListener != null) {
                         clickListener.onNotificationClicked(notification);
                     }
                 }
+            }
         });
+        vh.itemView.setOnLongClickListener(new View.OnLongClickListener() {
+            @Override
+            public boolean onLongClick(View view) {
+                if (!inSelectionMode) {
+                    inSelectionMode = true;
+                    if (selectionModeListener != null) {
+                        selectionModeListener.onEnterSelectionMode();
+                    }
+                }
+                toggleSelectedNotification(notification);
+                return true;
+            }
+        });
+    }
+
+    private void toggleSelectedNotification(LbryNotification notification) {
+        if (selectedItems.contains(notification)) {
+            selectedItems.remove(notification);
+        } else {
+            selectedItems.add(notification);
+        }
+
+        if (selectionModeListener != null) {
+            selectionModeListener.onItemSelectionToggled();
+        }
+
+        if (selectedItems.size() == 0) {
+            inSelectionMode = false;
+            if (selectionModeListener != null) {
+                selectionModeListener.onExitSelectionMode();
+            }
+        }
+
+        notifyDataSetChanged();
     }
 
     private long getLocalNotificationTime(LbryNotification notification) {

app/src/main/java/io/lbry/browser/data/DatabaseHelper.java

@@ -6,6 +6,7 @@ import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
 
 import java.math.BigDecimal;
+import java.sql.SQLInput;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
@@ -372,6 +373,20 @@ public class DatabaseHelper extends SQLiteOpenHelper {
         }
         return notifications;
     }
+    public static void deleteNotifications(List<LbryNotification> notifications, SQLiteDatabase db) {
+        StringBuilder sb = new StringBuilder("DELETE FROM notifications WHERE remote_id IN (");
+        List<Object> remoteIds = new ArrayList<>();
+        String delim = "";
+        for (int i = 0; i < notifications.size(); i++) {
+            remoteIds.add(String.valueOf(notifications.get(i).getRemoteId()));
+            sb.append(delim).append("?");
+            delim = ",";
+        }
+        sb.append(")");
+
+        String sql = sb.toString();
+        db.execSQL(sql, remoteIds.toArray());
+    }
     public static int getUnreadNotificationsCount(SQLiteDatabase db) {
         int count = 0;
         Cursor cursor = null;

app/src/main/java/io/lbry/browser/tasks/lbryinc/NotificationDeleteTask.java

@@ -0,0 +1,33 @@
+package io.lbry.browser.tasks.lbryinc;
+
+import android.os.AsyncTask;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import io.lbry.browser.exceptions.LbryioRequestException;
+import io.lbry.browser.exceptions.LbryioResponseException;
+import io.lbry.browser.utils.Helper;
+import io.lbry.browser.utils.Lbryio;
+
+public class NotificationDeleteTask extends AsyncTask<Void, Void, Boolean> {
+    private List<Long> ids;
+
+    public NotificationDeleteTask(List<Long> ids) {
+        this.ids = ids;
+    }
+
+    protected Boolean doInBackground(Void... params) {
+        Map<String, String> options = new HashMap<>();
+        options.put("notification_ids", Helper.joinL(ids, ","));
+
+        try {
+            Object result = Lbryio.parseResponse(Lbryio.call("notification", "delete", options, null));
+            return "ok".equalsIgnoreCase(result.toString());
+        } catch (LbryioResponseException | LbryioRequestException ex) {
+            // pass
+        }
+        return false;
+    }
+}

app/src/main/res/layout/content_main.xml

@@ -71,6 +71,10 @@
                 android:textSize="16sp"
                 android:textAlignment="center" />
         </LinearLayout>
+        <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+            android:id="@+id/notifications_list_swipe_container"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
             <androidx.recyclerview.widget.RecyclerView
                 android:id="@+id/notifications_list"
                 android:layout_width="match_parent"
@@ -78,6 +82,7 @@
                 android:paddingTop="8dp"
                 android:clipToPadding="false"
                 />
+        </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
      </RelativeLayout>
 
     <include layout="@layout/floating_wallet_balance" />

app/src/main/res/layout/list_item_notification.xml

@@ -28,6 +28,20 @@
                 android:layout_width="48dp"
                 android:layout_height="48dp"
                 android:visibility="invisible" />
+            <RelativeLayout
+                android:layout_centerHorizontal="true"
+                android:background="@drawable/bg_channel_overlay_icon"
+                android:id="@+id/notification_selected_overlay"
+                android:layout_width="48dp"
+                android:layout_height="48dp"
+                android:visibility="gone">
+                <ImageView
+                    android:layout_width="36dp"
+                    android:layout_height="36dp"
+                    android:layout_centerInParent="true"
+                    android:src="@drawable/ic_check"
+                    android:tint="@color/nextLbryGreen" />
+            </RelativeLayout>
         </RelativeLayout>
         <LinearLayout
             android:orientation="vertical"

app/src/main/res/menu/menu_notification.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/action_delete"
+        android:icon="@drawable/ic_delete"
+        android:title="@string/delete"
+        app:iconTint="@color/actionBarForeground"
+        app:showAsAction="always" />
+</menu>

app/src/main/res/values/strings.xml

@@ -628,6 +628,10 @@
 
     <!-- Notifications -->
     <string name="no_notifications">It\'s quiet here! New notifications will be displayed when you receive them.</string>
+    <plurals name="confirm_delete_notifications">
+        <item quantity="one">Are you sure you want to remove the selected notification?</item>
+        <item quantity="other">Are you sure you want to remove the selected notifications?</item>
+    </plurals>
 
     <!-- Font Awesome -->
     <string name="fa_gift" translatable="false">&#xf06b;</string>