add extra space at bottom of conversations list

by adding a SpacerItem (legacy code...-> migrate to Compose!)

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/java/com/nextcloud/talk/adapters/items/SpacerItem.kt

@@ -0,0 +1,41 @@
+/*
+ * Nextcloud Talk - Android Client
+ *
+ * SPDX-FileCopyrightText: 2025 Marcel Hibbe <dev@mhibbe.de>
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+package com.nextcloud.talk.adapters.items
+
+import android.view.View
+import com.nextcloud.talk.R
+import eu.davidea.flexibleadapter.FlexibleAdapter
+import eu.davidea.flexibleadapter.items.AbstractFlexibleItem
+import eu.davidea.flexibleadapter.items.IFlexible
+import eu.davidea.viewholders.FlexibleViewHolder
+
+class SpacerItem(private val height: Int) : AbstractFlexibleItem<SpacerItem.ViewHolder>() {
+
+    override fun getLayoutRes(): Int = R.layout.item_spacer
+
+    override fun createViewHolder(view: View?, adapter: FlexibleAdapter<IFlexible<*>?>?): ViewHolder {
+        return ViewHolder(view!!, adapter!!)
+    }
+
+    override fun bindViewHolder(
+        adapter: FlexibleAdapter<IFlexible<*>?>?,
+        holder: ViewHolder,
+        position: Int,
+        payloads: MutableList<Any>?
+    ) {
+        holder.itemView.layoutParams.height = height
+    }
+
+    override fun equals(other: Any?) = other is SpacerItem
+
+    override fun hashCode(): Int {
+        return 0
+    }
+
+    class ViewHolder(view: View, adapter: FlexibleAdapter<*>) :
+        FlexibleViewHolder(view, adapter)
+}

app/src/main/java/com/nextcloud/talk/conversationlist/ConversationsListActivity.kt

@@ -79,6 +79,7 @@ import com.nextcloud.talk.adapters.items.GenericTextHeaderItem
 import com.nextcloud.talk.adapters.items.LoadMoreResultsItem
 import com.nextcloud.talk.adapters.items.MessageResultItem
 import com.nextcloud.talk.adapters.items.MessagesTextHeaderItem
+import com.nextcloud.talk.adapters.items.SpacerItem
 import com.nextcloud.talk.api.NcApi
 import com.nextcloud.talk.application.NextcloudTalkApplication
 import com.nextcloud.talk.arbitrarystorage.ArbitraryStorageManager
@@ -291,10 +292,9 @@ class ConversationsListActivity :
 
     override fun onResume() {
         super.onResume()
-
-        // actionBar?.show()
         if (adapter == null) {
             adapter = FlexibleAdapter(conversationItems, this, true)
+            addEmptyItemForEdgeToEdgeIfNecessary()
         } else {
             binding.loadingContent.visibility = View.GONE
         }
@@ -340,6 +340,14 @@ class ConversationsListActivity :
         showSearchOrToolbar()
     }
 
+    // if edge to edge is used, add an empty item at the bottom of the list
+    @Suppress("MagicNumber")
+    private fun addEmptyItemForEdgeToEdgeIfNecessary() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.VANILLA_ICE_CREAM) {
+            adapter?.addScrollableFooter(SpacerItem(200))
+        }
+    }
+
     @Suppress("LongMethod")
     private fun initObservers() {
         this.lifecycleScope.launch {

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

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Nextcloud Talk - Android Client
+  ~
+  ~ SPDX-FileCopyrightText: 2025 Marcel Hibbe <dev@mhibbe.de>
+  ~ SPDX-License-Identifier: GPL-3.0-or-later
+  -->
+
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="0dp"/>