统一各界面的图片默认背景

- 主界面相册集预览封面使用背景设置
- 相册浏览界面图片预览使用背景设置
- 返回界面时自动刷新背景设置

gallery/build.properties

@@ -1,8 +1,8 @@
 #Created by .winboll/winboll_app_build.gradle
-#Sat Apr 25 19:42:01 CST 2026
+#Sat Apr 25 19:56:18 CST 2026
 stageCount=3
 libraryProject=
 baseVersion=15.0
 publishVersion=15.0.2
-buildCount=8
+buildCount=10
 baseBetaVersion=15.0.3

gallery/src/main/java/cc/winboll/studio/gallery/AlbumActivity.java

@@ -48,6 +48,7 @@ public class AlbumActivity extends AppCompatActivity {
         recyclerView = findViewById(R.id.recycler_view);
         recyclerView.setLayoutManager(new GridLayoutManager(this, 3));
         adapter = new ImageAdapter();
+        adapter.setContext(this);
         recyclerView.setAdapter(adapter);
         
         adapter.setOnImageClickListener(new OnImageClickListener() {
@@ -149,5 +150,8 @@ public class AlbumActivity extends AppCompatActivity {
         if (checkPermission()) {
             loadImages();
         }
+        if (adapter != null) {
+            adapter.refreshBg();
+        }
     }
 }

gallery/src/main/java/cc/winboll/studio/gallery/AlbumAdapter.java

@@ -20,6 +20,21 @@ public class AlbumAdapter extends RecyclerView.Adapter<AlbumAdapter.ViewHolder>
     public static final String TAG = "AlbumAdapter";
     private ArrayList<Album> albums = new ArrayList<>();
     private OnAlbumClickListener listener;
+    private Preferences prefs;
+    private int bgType = 0;
+    
+    private int getBgRes() {
+        switch (bgType) {
+            case 0:
+                return R.drawable.bg_checkerboard;
+            case 1:
+                return R.drawable.bg_white;
+            case 2:
+                return R.drawable.bg_black;
+            default:
+                return R.drawable.bg_checkerboard;
+        }
+    }
 
     public interface OnAlbumClickListener {
         void onAlbumClick(Album album);
@@ -34,6 +49,18 @@ public class AlbumAdapter extends RecyclerView.Adapter<AlbumAdapter.ViewHolder>
         LogUtils.d(TAG, "setData: " + albums.size() + " albums");
         notifyDataSetChanged();
     }
+    
+    public void setContext(android.content.Context context) {
+        prefs = new Preferences(context);
+        bgType = prefs.getBgType();
+    }
+    
+    public void refreshBg() {
+        if (prefs != null) {
+            bgType = prefs.getBgType();
+            notifyDataSetChanged();
+        }
+    }
 
     @NonNull
     @Override
@@ -48,6 +75,8 @@ public class AlbumAdapter extends RecyclerView.Adapter<AlbumAdapter.ViewHolder>
         final Album album = albums.get(position);
         LogUtils.d(TAG, "bind: " + album.getName() + ", cover=" + album.getCoverUri());
         
+        holder.coverImage.setBackgroundResource(getBgRes());
+        
         holder.albumName.setText(album.getName());
         holder.imageCount.setText(album.getImageCount() + " photos");
         

gallery/src/main/java/cc/winboll/studio/gallery/ImageAdapter.java

@@ -18,6 +18,21 @@ public class ImageAdapter extends RecyclerView.Adapter<ImageAdapter.ViewHolder>
     private ArrayList<Uri> imageUrls = new ArrayList<>();
     private ArrayList<String> imagePaths = new ArrayList<>();
     private OnImageClickListener listener;
+    private int bgType = 0;
+    private Preferences prefs;
+    
+    private int getBgRes() {
+        switch (bgType) {
+            case 0:
+                return R.drawable.bg_checkerboard;
+            case 1:
+                return R.drawable.bg_white;
+            case 2:
+                return R.drawable.bg_black;
+            default:
+                return R.drawable.bg_checkerboard;
+        }
+    }
 
     public interface OnImageClickListener {
         void onImageClick(int position, ArrayList<Uri> urls, ArrayList<String> paths);
@@ -33,6 +48,18 @@ public class ImageAdapter extends RecyclerView.Adapter<ImageAdapter.ViewHolder>
         LogUtils.d(TAG, "setData: " + urls.size() + " images");
         notifyDataSetChanged();
     }
+    
+    public void setContext(android.content.Context context) {
+        prefs = new Preferences(context);
+        bgType = prefs.getBgType();
+    }
+    
+    public void refreshBg() {
+        if (prefs != null) {
+            bgType = prefs.getBgType();
+            notifyDataSetChanged();
+        }
+    }
 
     @NonNull
     @Override
@@ -44,6 +71,8 @@ public class ImageAdapter extends RecyclerView.Adapter<ImageAdapter.ViewHolder>
 
     @Override
     public void onBindViewHolder(@NonNull ViewHolder holder, final int position) {
+        holder.imageView.setBackgroundResource(getBgRes());
+        
         Glide.with(holder.imageView.getContext())
             .load(imageUrls.get(position))
             .centerCrop()

gallery/src/main/java/cc/winboll/studio/gallery/MainActivity.java

@@ -52,6 +52,7 @@ public class MainActivity extends AppCompatActivity {
         recyclerView = findViewById(R.id.recycler_view);
         recyclerView.setLayoutManager(new GridLayoutManager(this, 2));
         adapter = new AlbumAdapter();
+        adapter.setContext(this);
         recyclerView.setAdapter(adapter);
         
         adapter.setOnAlbumClickListener(new OnAlbumClickListener() {
@@ -244,6 +245,9 @@ public class MainActivity extends AppCompatActivity {
             scanMediaStore();
             loadAlbums();
         }
+        if (adapter != null) {
+            adapter.refreshBg();
+        }
     }
     
     private void scanMediaStore() {