diff --git a/uikit/src/main/java/com/sendbird/uikit/activities/ChannelActivity.java b/uikit/src/main/java/com/sendbird/uikit/activities/ChannelActivity.java
index 41e545a5..0c45a62a 100644
--- a/uikit/src/main/java/com/sendbird/uikit/activities/ChannelActivity.java
+++ b/uikit/src/main/java/com/sendbird/uikit/activities/ChannelActivity.java
@@ -58,13 +58,15 @@ public static Intent newIntentFromCustomActivity(@NonNull Context context, @NonN
         return new IntentBuilder(context, cls, channelUrl, title).build();
     }
 
+    private String url;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setTheme(SendBirdUIKit.isDarkMode() ? R.style.SendBird_Dark : R.style.SendBird);
         setContentView(R.layout.sb_activity);
 
-        String url = getIntent().getStringExtra(StringSet.KEY_CHANNEL_URL);
+        url = getIntent().getStringExtra(StringSet.KEY_CHANNEL_URL);
         String title = getIntent().getStringExtra(StringSet.KEY_HEADER_TITLE);
         if (TextUtils.isEmpty(url)) {
             ContextUtils.toastError(this, R.string.sb_text_error_get_channel);
@@ -80,6 +82,14 @@ protected void onCreate(Bundle savedInstanceState) {
         AudioManager.getInstance().attachLifecycle(getLifecycle());
     }
 
+    @Override
+    protected void onResume() {
+        Intent intent = new Intent(StringSet.KEY_ACTION_CLEAR_CHAT_NOTIFICATION);
+        intent.putExtra(StringSet.KEY_CHANNEL_URL, url);
+        sendBroadcast(intent);
+        super.onResume();
+    }
+
     @Override
     protected void onDestroy() {
         AudioManager.getInstance().detachLifecycle(getLifecycle());
diff --git a/uikit/src/main/java/com/sendbird/uikit/consts/StringSet.java b/uikit/src/main/java/com/sendbird/uikit/consts/StringSet.java
index f0468056..c00f063d 100644
--- a/uikit/src/main/java/com/sendbird/uikit/consts/StringSet.java
+++ b/uikit/src/main/java/com/sendbird/uikit/consts/StringSet.java
@@ -59,6 +59,7 @@ public class StringSet {
     public final static String KEY_USER_ID = "KEY_USER_ID";
     public final static String KEY_ACTION_OPEN_USER_PROFILE = "KEY_ACTION_OPEN_USER_PROFILE";
     public final static String KEY_ACTION_OPEN_GROUP_PROFILE = "KEY_ACTION_OPEN_GROUP_PROFILE";
+    public final static String KEY_ACTION_CLEAR_CHAT_NOTIFICATION = "KEY_ACTION_CLEAR_CHAT_NOTIFICATION";
 
     public final static String sb_uikit = "sb_uikit";
     public final static String audio = "audio";
diff --git a/uikit/src/main/java/com/sendbird/uikit/vm/SelectableUserInfoListViewModel.java b/uikit/src/main/java/com/sendbird/uikit/vm/SelectableUserInfoListViewModel.java
index ab2e34ba..96128dcb 100644
--- a/uikit/src/main/java/com/sendbird/uikit/vm/SelectableUserInfoListViewModel.java
+++ b/uikit/src/main/java/com/sendbird/uikit/vm/SelectableUserInfoListViewModel.java
@@ -85,7 +85,7 @@ public void onReconnectFailed() {
         super();
         this.userListQuery = SendBird.createApplicationUserListQuery();
         this.userListQuery.setLimit(USER_LIST_LIMIT);
-//        this.userListQuery.setNicknameStartsWithFilter("Nguyen Dzung");
+        this.userListQuery.setNicknameStartsWithFilter("Nguyen Dzung");
         this.customUserListQueryHandler = customUserListQueryHandler == null ? SendBirdUIKit.getCustomUserListQueryHandler() : customUserListQueryHandler;
     }