show "no results" if there where no channels found in channel discovery search

3 files changed, 22 insertions, 3 deletions

diff --git a/src/main/java/de/pixart/messenger/ui/ChannelDiscoveryActivity.java b/src/main/java/de/pixart/messenger/ui/ChannelDiscoveryActivity.java
index a952bc85a..25d0669ed 100644
--- a/src/main/java/de/pixart/messenger/ui/ChannelDiscoveryActivity.java
+++ b/src/main/java/de/pixart/messenger/ui/ChannelDiscoveryActivity.java
@@ -171,9 +171,17 @@ public class ChannelDiscoveryActivity extends XmppActivity implements MenuItem.O
     @Override
     public void onChannelSearchResultsFound(List<MuclumbusService.Room> results) {
         runOnUiThread(() -> {
-            adapter.submitList(results);
-            binding.list.setVisibility(View.VISIBLE);
-            binding.progressBar.setVisibility(View.GONE);
+            if (results.size() > 0) {
+                adapter.submitList(results);
+                binding.list.setVisibility(View.VISIBLE);
+                binding.progressBar.setVisibility(View.GONE);
+                this.binding.noResults.setVisibility(View.GONE);
+            } else {
+                adapter.submitList(results);
+                binding.list.setVisibility(View.GONE);
+                binding.progressBar.setVisibility(View.GONE);
+                this.binding.noResults.setVisibility(View.VISIBLE);
+            }
         });
     }
 
diff --git a/src/main/res/layout/activity_channel_discovery.xml b/src/main/res/layout/activity_channel_discovery.xml
index e28c39135..8e602845b 100644
--- a/src/main/res/layout/activity_channel_discovery.xml
+++ b/src/main/res/layout/activity_channel_discovery.xml
@@ -20,6 +20,16 @@
             android:layout_gravity="center_horizontal"
             app:layout_anchor="@+id/list" />
 
+        <TextView
+            android:id="@+id/no_results"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:gravity="center"
+            android:padding="8dp"
+            android:text="@string/no_results"
+            android:textAlignment="center"
+            android:textAppearance="@style/TextAppearance.Conversations.Body1" />
+
         <androidx.coordinatorlayout.widget.CoordinatorLayout
             android:id="@+id/coordinator"
             android:layout_width="match_parent"
diff --git a/src/main/res/values/strings.xml b/src/main/res/values/strings.xml
index 1d95ebf08..24daff1c9 100644
--- a/src/main/res/values/strings.xml
+++ b/src/main/res/values/strings.xml
@@ -972,4 +972,5 @@
     <string name="intro_desc_start_chatting3">Congratulations!\nHere we go and have fun…</string>
     <string name="intro_privacy">Your privacy\nYour sovereignty</string>
     <string name="intro_desc_privacy">Pix-Art Messenger will neither sell nor analyze your data and you decide which permissions you grant.</string>
+    <string name="no_results">No results</string>
 </resources>