Add no items found placeholder when searching

app/src/main/kotlin/com/simplemobiletools/launcher/fragments/AllAppsFragment.kt

@@ -182,9 +182,15 @@ class AllAppsFragment(context: Context, attributeSet: AttributeSet) : MyFragment
 
         search_bar.onSearchTextChangedListener = {
             (all_apps_grid.adapter as? LaunchersAdapter)?.updateSearchQuery(it)
+            showNoResultsPlaceholderIfNeeded()
         }
     }
 
+    private fun showNoResultsPlaceholderIfNeeded() {
+        val itemCount = all_apps_grid.adapter?.itemCount
+        no_results_placeholder.beVisibleIf(itemCount != null && itemCount == 0)
+    }
+
     override fun onAppLauncherLongPressed(x: Float, y: Float, appLauncher: AppLauncher) {
         val gridItem = HomeScreenGridItem(
             null,

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

@@ -26,4 +26,21 @@
             app:spanCount="@integer/portrait_column_count" />
 
     </com.qtalk.recyclerviewfastscroller.RecyclerViewFastScroller>
+
+    <com.simplemobiletools.commons.views.MyTextView
+        android:id="@+id/no_results_placeholder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/search_bar"
+        android:layout_centerHorizontal="true"
+        android:layout_marginTop="@dimen/bigger_margin"
+        android:alpha="0.8"
+        android:gravity="center"
+        android:paddingLeft="@dimen/activity_margin"
+        android:paddingRight="@dimen/activity_margin"
+        android:text="@string/no_items_found"
+        android:textSize="@dimen/bigger_text_size"
+        android:textStyle="italic"
+        android:visibility="gone" />
+
 </com.simplemobiletools.launcher.fragments.AllAppsFragment>