Fix bug

app/src/leanback/java/com/fongmi/android/tv/ui/adapter/RestoreAdapter.java

@@ -34,9 +34,9 @@ public class RestoreAdapter extends RecyclerView.Adapter<RestoreAdapter.ViewHold
 
     public void addAll() {
         File[] files = Path.tv().listFiles();
-        if (files == null || files.length == 0) return;
+        if (files == null) files = new File[0];
         for (File file : files) if (file.getName().startsWith("tv") && file.getName().endsWith(".bk.gz")) mItems.add(file);
-        Collections.sort(mItems, (f1, f2) -> Long.compare(f2.lastModified(), f1.lastModified()));
+        if (!mItems.isEmpty()) Collections.sort(mItems, (f1, f2) -> Long.compare(f2.lastModified(), f1.lastModified()));
         notifyDataSetChanged();
     }
 

app/src/main/java/com/fongmi/android/tv/api/config/LiveConfig.java

@@ -174,7 +174,7 @@ public class LiveConfig {
         } catch (Throwable e) {
             e.printStackTrace();
         } finally {
-            App.post(callback::success);
+            if (callback != null) App.post(callback::success);
         }
     }
 

app/src/mobile/java/com/fongmi/android/tv/ui/adapter/RestoreAdapter.java

@@ -28,6 +28,7 @@ public class RestoreAdapter extends RecyclerView.Adapter<RestoreAdapter.ViewHold
         @Override
         public void success() {
             notifyDataSetChanged();
+            mListener.onItemLoaded();
         }
     };
 
@@ -40,6 +41,8 @@ public class RestoreAdapter extends RecyclerView.Adapter<RestoreAdapter.ViewHold
 
     public interface OnClickListener {
 
+        void onItemLoaded();
+
         void onItemClick(File item);
 
         void onDeleteClick(File item);
@@ -48,9 +51,9 @@ public class RestoreAdapter extends RecyclerView.Adapter<RestoreAdapter.ViewHold
     private void addAll() {
         App.execute(() -> {
             File[] files = Path.tv().listFiles();
-            if (files == null || files.length == 0) return;
+            if (files == null) files = new File[0];
             for (File file : files) if (file.getName().startsWith("tv") && file.getName().endsWith(".bk.gz")) mItems.add(file);
-            Collections.sort(mItems, (f1, f2) -> Long.compare(f2.lastModified(), f1.lastModified()));
+            if (!mItems.isEmpty()) Collections.sort(mItems, (f1, f2) -> Long.compare(f2.lastModified(), f1.lastModified()));
             callback.success();
         });
     }

app/src/mobile/java/com/fongmi/android/tv/ui/dialog/RestoreDialog.java

@@ -1,6 +1,7 @@
 package com.fongmi.android.tv.ui.dialog;
 
 import android.view.LayoutInflater;
+import android.view.View;
 import android.view.ViewGroup;
 
 import androidx.annotation.NonNull;
@@ -47,6 +48,11 @@ public class RestoreDialog extends BaseDialog implements RestoreAdapter.OnClickL
         binding.recycler.addItemDecoration(new SpaceItemDecoration(1, 16));
     }
 
+    @Override
+    public void onItemLoaded() {
+        binding.recycler.setVisibility(adapter.getItemCount() == 0 ? View.GONE : View.VISIBLE);
+    }
+
     @Override
     public void onItemClick(File item) {
         AppDatabase.restore(item, callback);