<gallery>APK 15.0.10 release Publish.

【功能更新】
1. 系统相册按钮：
   - 工具栏新增“系统相册”菜单项 (ic_cover)。
   - 点击后通过 Intent 调用系统默认相册。

2. 重置按钮：
   - 工具栏新增“重置”菜单项 (ic_cover_reset)。
   - 清除图库 ACTION_VIEW 的默认打开记录，恢复应用选择框。
   - 兼容处理：API <= 30 自动清除，API > 30 提示适配限制说明。

【代码变更】
- MainActivity.java: 新增 action_gallery 与 action_reset_gallery 响应逻辑，包含异常捕获。
- menu_main.xml: 注册两个新菜单项。
- strings.xml: 新增 "system_gallery", "reset_gallery" 字符串资源。

【其他新增】
- 新增 ColorPaletteDialog 类及 dialog_color_palette.xml 布局。
- 新增 styles.xml 样式 ColorPaletteDialog。
- 新增重置图标资源 ic_cover_reset.xml。
- 更新 build.properties 版本配置。

gallery/build.gradle

@@ -109,7 +109,7 @@ dependencies {
 	*/
 	// WinBoLL库 nexus.winboll.cc 地址
 	api 'cc.winboll.studio:libaes:15.15.9'
-    api 'cc.winboll.studio:libappbase:15.15.20'
+    api 'cc.winboll.studio:libappbase:15.15.21'
 	
 	// WinBoLL备用库 jitpack.io 地址
 	//api 'com.github.ZhanGSKen:AES:aes-v15.15.7'

gallery/build.properties

@@ -1,8 +1,8 @@
 #Created by .winboll/winboll_app_build.gradle
-#Tue Apr 28 10:57:44 HKT 2026
-stageCount=8
+#Thu Apr 30 23:01:42 HKT 2026
+stageCount=11
 libraryProject=
 baseVersion=15.0
-publishVersion=15.0.7
+publishVersion=15.0.10
 buildCount=0
-baseBetaVersion=15.0.8
+baseBetaVersion=15.0.11

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

@@ -130,7 +130,7 @@ public class AlbumAdapter extends RecyclerView.Adapter<AlbumAdapter.ViewHolder>
 private void showContextMenu(View view, final Album album) {
         android.app.AlertDialog.Builder builder = new android.app.AlertDialog.Builder(view.getContext());
         builder.setTitle(album.getName());
-        boolean isPinned = pinnedDbHelper != null && pinnedDbHelper.isPinned(album.getPath());
+        final boolean isPinned = pinnedDbHelper != null && pinnedDbHelper.isPinned(album.getPath());
         String[] items = isPinned ? new String[]{"取消置顶"} : new String[]{"置顶"};
         builder.setItems(items, new android.content.DialogInterface.OnClickListener() {
             @Override
@@ -252,4 +252,4 @@ private void showContextMenu(View view, final Album album) {
             imageCount = itemView.findViewById(R.id.image_count);
         }
     }
-}
+}

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

@@ -3,15 +3,24 @@ package cc.winboll.studio.gallery;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.RectF;
+import android.graphics.drawable.GradientDrawable;
 import android.net.Uri;
 import android.os.Bundle;
+import android.content.DialogInterface;
 import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.RectF;
+import android.net.Uri;
+import android.os.Bundle;
 import android.provider.MediaStore;
 import android.view.View;
 import android.widget.ImageView;
 import android.widget.ScrollView;
 import android.widget.SeekBar;
+import android.widget.TextView;
 import android.widget.Toast;
+import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatActivity;
 import cc.winboll.studio.libappbase.LogUtils;
 import java.io.File;
@@ -78,6 +87,13 @@ public class CropActivity extends AppCompatActivity {
             }
         });
         
+        findViewById(R.id.btn_info).setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                showCropInfoDialog();
+            }
+        });
+        
         zoomContainer = findViewById(R.id.zoom_container);
         
         SeekBar seekBarZoom = findViewById(R.id.seekbar_zoom);
@@ -98,6 +114,39 @@ public class CropActivity extends AppCompatActivity {
         });
         
         cropCanvasView = findViewById(R.id.crop_canvas_view);
+        
+        final View colorView = findViewById(R.id.color_view);
+        final GradientDrawable colorDrawable = (GradientDrawable) colorView.getBackground();
+        cropCanvasView.setOnBackgroundColorChangedListener(new CropCanvasView.OnBackgroundColorChangedListener() {
+            @Override
+            public void onBackgroundColorChanged(int color) {
+                colorDrawable.setColor(color);
+            }
+        });
+        
+        cropCanvasView.setOnColorPickedListener(new CropCanvasView.OnColorPickedListener() {
+            @Override
+            public void onColorPicked(int color) {
+                int pickX = cropCanvasView.getLastPickImageX();
+                int pickY = cropCanvasView.getLastPickImageY();
+                colorDrawable.setColor(color);
+                Toast.makeText(CropActivity.this, 
+                    "颜色已拾取: #" + String.format("%06X", color & 0xFFFFFF) + 
+                    " (" + pickX + "," + pickY + ")", 
+                    Toast.LENGTH_SHORT).show();
+            }
+        });
+        
+        cropCanvasView.setOnColorPickEndListener(new CropCanvasView.OnColorPickEndListener() {
+            @Override
+            public void onColorPickEnd() {
+                cropCanvasView.setColorPickMode(false);
+                btnColorPick.setAlpha(1.0f);
+            }
+        });
+        
+        colorDrawable.setColor(cropCanvasView.getBackgroundColor());
+        
         loadImage();
     }
     
@@ -206,6 +255,67 @@ public class CropActivity extends AppCompatActivity {
         }
     }
     
+    private void showCropInfoDialog() {
+        StringBuilder info = new StringBuilder();
+        info.append("=== 画布信息 ===\n");
+        info.append("画布宽度: ").append(cropCanvasView.getCanvasWidth()).append("px\n");
+        info.append("画布高度: ").append(cropCanvasView.getCanvasHeight()).append("px\n");
+        
+        info.append("\n=== 拾取颜色 ===\n");
+        int bgColor = cropCanvasView.getBackgroundColor();
+        info.append("背景颜色: #").append(String.format("%06X", bgColor & 0xFFFFFF)).append("\n");
+        info.append("拾取坐标: ").append(cropCanvasView.getLastPickImageX()).append(",")
+            .append(cropCanvasView.getLastPickImageY()).append("\n");
+        
+        info.append("\n=== 裁剪结果 ===\n");
+        RectF cropRect = cropCanvasView.getCropRect();
+        if (cropRect != null) {
+            info.append("裁剪区域: ").append((int)cropRect.left).append(",")
+                .append((int)cropRect.top).append(",")
+                .append((int)cropRect.right).append(",")
+                .append((int)cropRect.bottom).append("\n");
+            info.append("裁剪宽度: ").append((int)cropRect.width()).append("px\n");
+            info.append("裁剪高度: ").append((int)cropRect.height()).append("px\n");
+        }
+        
+        Bitmap canvasBitmap = cropCanvasView.getCanvasBitmap();
+        final Bitmap[] previewHolder = new Bitmap[1];
+        if (canvasBitmap != null && !canvasBitmap.isRecycled() && cropRect != null) {
+            int bmpX = Math.max(0, (int) cropRect.left);
+            int bmpY = Math.max(0, (int) cropRect.top);
+            int bmpW = Math.min((int) cropRect.width(), canvasBitmap.getWidth() - bmpX);
+            int bmpH = Math.min((int) cropRect.height(), canvasBitmap.getHeight() - bmpY);
+            if (bmpW > 0 && bmpH > 0) {
+                previewHolder[0] = Bitmap.createBitmap(canvasBitmap, bmpX, bmpY, bmpW, bmpH);
+            }
+        }
+        
+        final Bitmap previewBitmap = previewHolder[0];
+        
+        View dialogView = getLayoutInflater().inflate(R.layout.dialog_crop_info, null);
+        TextView infoText = dialogView.findViewById(R.id.info_text);
+        ImageView previewImage = dialogView.findViewById(R.id.preview_image);
+        infoText.setText(info.toString());
+        if (previewBitmap != null) {
+            previewImage.setImageBitmap(previewBitmap);
+        }
+        
+        AlertDialog dialog = new AlertDialog.Builder(this)
+            .setTitle("裁剪信息")
+            .setView(dialogView)
+            .setPositiveButton("确定", null)
+            .create();
+        dialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
+            @Override
+            public void onDismiss(DialogInterface dialog) {
+                if (previewBitmap != null && !previewBitmap.isRecycled()) {
+                    previewBitmap.recycle();
+                }
+            }
+        });
+        dialog.show();
+    }
+    
     @Override
     protected void onDestroy() {
         super.onDestroy();

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

@@ -12,6 +12,33 @@ import android.view.MotionEvent;
 import android.view.View;
 
 public class CropCanvasView extends View {
+    public interface OnBackgroundColorChangedListener {
+        void onBackgroundColorChanged(int color);
+    }
+    
+    public interface OnColorPickedListener {
+        void onColorPicked(int color);
+    }
+    
+    public interface OnColorPickEndListener {
+        void onColorPickEnd();
+    }
+    
+    private OnBackgroundColorChangedListener backgroundColorChangedListener;
+    private OnColorPickedListener colorPickedListener;
+    private OnColorPickEndListener colorPickEndListener;
+    
+    public void setOnBackgroundColorChangedListener(OnBackgroundColorChangedListener listener) {
+        this.backgroundColorChangedListener = listener;
+    }
+    
+    public void setOnColorPickedListener(OnColorPickedListener listener) {
+        this.colorPickedListener = listener;
+    }
+    
+    public void setOnColorPickEndListener(OnColorPickEndListener listener) {
+        this.colorPickEndListener = listener;
+    }
     private Paint imagePaint;
     private Paint borderPaint;
     private Paint cornerPaint;
@@ -39,11 +66,16 @@ public class CropCanvasView extends View {
     private RectF imageBounds = new RectF();
     private RectF canvasBounds = new RectF();
     private Bitmap originalBitmap;
+    private Bitmap canvasBitmap;
+    private float bitmapScale = 1.0f;
     private Bitmap displayBitmap;
     private RectF initialSpanRect;
     private float initialSpan;
     private int backgroundColor = Color.BLUE;
     private boolean colorPickMode = false;
+    private int previewColor = 0;
+    private float lastPickX = 0;
+    private float lastPickY = 0;
     private float pickX, pickY;
     
     private float displayScale = 1.0f;
@@ -239,6 +271,9 @@ public class CropCanvasView extends View {
     
     public void setBackgroundColor(int color) {
         this.backgroundColor = color;
+        if (backgroundColorChangedListener != null) {
+            backgroundColorChangedListener.onBackgroundColorChanged(color);
+        }
         invalidate();
     }
     
@@ -246,6 +281,40 @@ public class CropCanvasView extends View {
         return backgroundColor;
     }
     
+    public int getPreviewColor() {
+        return previewColor;
+    }
+    
+    public float getLastPickX() {
+        return lastPickX;
+    }
+    
+    public float getLastPickY() {
+        return lastPickY;
+    }
+    
+    public int getLastPickImageX() {
+        if (originalBitmap == null || originalBitmap.isRecycled()) {
+            return 0;
+        }
+        float imgX = screenToImageX(lastPickX);
+        float imgY = screenToImageY(lastPickY);
+        int bmpX = (int) ((imgX - imageBounds.left) * displayBitmapScale);
+        int bmpY = (int) ((imgY - imageBounds.top) * displayBitmapScale);
+        return Math.max(0, Math.min(bmpX, originalBitmap.getWidth() - 1));
+    }
+    
+    public int getLastPickImageY() {
+        if (originalBitmap == null || originalBitmap.isRecycled()) {
+            return 0;
+        }
+        float imgX = screenToImageX(lastPickX);
+        float imgY = screenToImageY(lastPickY);
+        int bmpX = (int) ((imgX - imageBounds.left) * displayBitmapScale);
+        int bmpY = (int) ((imgY - imageBounds.top) * displayBitmapScale);
+        return Math.max(0, Math.min(bmpY, originalBitmap.getHeight() - 1));
+    }
+    
     public void setColorPickMode(boolean enable) {
         this.colorPickMode = enable;
         if (enable) {
@@ -447,11 +516,46 @@ public class CropCanvasView extends View {
         }
         
         if (colorPickMode) {
-            if (event.getAction() == MotionEvent.ACTION_DOWN) {
-                pickX = x;
-                pickY = y;
-                int color = getColorAt(x, y);
-                setBackgroundColor(color);
+            if (event.getAction() == MotionEvent.ACTION_DOWN || event.getAction() == MotionEvent.ACTION_MOVE) {
+                if (originalBitmap != null && !originalBitmap.isRecycled()) {
+                    float imgX = screenToImageX(x);
+                    float imgY = screenToImageY(y);
+                    if (imageBounds.contains(imgX, imgY)) {
+                        previewColor = getImageColorAt(x, y);
+                    } else if (canvasBounds.contains(x, y)) {
+                        previewColor = backgroundColor;
+                    } else {
+                        previewColor = Color.TRANSPARENT;
+                    }
+                    lastPickX = x;
+                    lastPickY = y;
+                    if (backgroundColorChangedListener != null) {
+                        backgroundColorChangedListener.onBackgroundColorChanged(previewColor);
+                    }
+                }
+                return true;
+            }
+            if (event.getAction() == MotionEvent.ACTION_UP) {
+                if (canvasBounds.contains(x, y)) {
+                    int pickedColor;
+                    float imgX = screenToImageX(x);
+                    float imgY = screenToImageY(y);
+                    if (imageBounds.contains(imgX, imgY)) {
+                        int colorAtPoint = getImageColorAt(x, y);
+                        pickedColor = colorAtPoint;
+                        backgroundColor = colorAtPoint;
+                    } else {
+                        pickedColor = backgroundColor;
+                    }
+                    if (colorPickedListener != null) {
+                        colorPickedListener.onColorPicked(pickedColor);
+                    }
+                }
+                if (colorPickEndListener != null) {
+                    colorPickEndListener.onColorPickEnd();
+                }
+                previewColor = 0;
+                invalidate();
                 return true;
             }
             return true;

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

@@ -118,7 +118,7 @@ public class ImageAdapter extends RecyclerView.Adapter<ImageAdapter.ViewHolder>
         notifyDataSetChanged();
     }
     
-    private void showContextMenu(View view, final int position) {
+    private void showContextMenu(final View view, final int position) {
         final String imagePath = imagePaths.get(position);
         final Uri imageUri = imageUrls.get(position);
         final boolean[] isPinned = {pinnedDbHelper != null && pinnedDbHelper.isPinned(imagePath)};
@@ -244,4 +244,4 @@ public class ImageAdapter extends RecyclerView.Adapter<ImageAdapter.ViewHolder>
             coverIcon = itemView.findViewById(R.id.cover_icon);
         }
     }
-}
+}

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

@@ -289,7 +289,32 @@ private void loadAlbums() {
     @Override
     public boolean onOptionsItemSelected(@NonNull MenuItem item) {
         int id = item.getItemId();
-        if (id == R.id.action_settings) {
+        if (id == R.id.action_gallery) {
+            Intent intent = new Intent(Intent.ACTION_VIEW, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
+            startActivity(intent);
+            return true;
+        } else if (id == R.id.action_reset_gallery) {
+            // 清除 图库/ACTION_VIEW 图片 Uri 的默认打开记录
+            PackageManager pm = getPackageManager();
+
+            // 构建和你跳转一模一样的 Intent
+            Intent clearIntent = new Intent(Intent.ACTION_VIEW, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
+
+            try {
+                // 仅在 API <= 30 时执行重置操作
+                if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.R) {
+                    String mimeType = clearIntent.resolveType(getContentResolver());
+                    pm.clearPackagePreferredActivities(mimeType);
+                    Toast.makeText(this, "已清除默认打开方式", Toast.LENGTH_SHORT).show();
+                } else {
+                    // API > 30 时，弹出提示说明适配限制
+                    Toast.makeText(this, "应用开发资源有限，本应用适配目标安卓版本为 (" + Build.VERSION_CODES.R + ")。", Toast.LENGTH_LONG).show();
+                }
+            } catch (SecurityException e) {
+                Toast.makeText(this, "需要授予重置默认应用权限，请在系统设置中开启", Toast.LENGTH_LONG).show();
+            }
+            return true;
+        } else if (id == R.id.action_settings) {
             startActivity(new Intent(this, SettingsActivity.class));
             return true;
         } else if (id == R.id.action_about) {

gallery/src/main/java/cc/winboll/studio/gallery/dialog/ColorPaletteDialog.java

@@ -0,0 +1,44 @@
+package cc.winboll.studio.gallery.dialog;
+
+import android.app.Dialog;
+import android.content.Context;
+import android.os.Bundle;
+import android.view.WindowManager;
+import android.widget.TextView;
+import androidx.annotation.NonNull;
+import cc.winboll.studio.gallery.R;
+
+/**
+ * 颜色表对话框
+ * 继承于普通对话框类，使用视图文件
+ */
+public class ColorPaletteDialog extends Dialog {
+
+    public ColorPaletteDialog(@NonNull Context context) {
+        super(context, R.style.ColorPaletteDialog);
+    }
+
+    public ColorPaletteDialog(@NonNull Context context, int themeResId) {
+        super(context, themeResId);
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        // super.onCreate(savedInstanceState);
+        setContentView(R.layout.dialog_color_palette);
+        
+        TextView titleText = findViewById(R.id.title_text);
+        
+        WindowManager.LayoutParams params = getWindow().getAttributes();
+        params.width = WindowManager.LayoutParams.MATCH_PARENT;
+        getWindow().setAttributes(params);
+    }
+
+    public void setTitle(String title) {
+        
+    }
+
+    public interface OnColorItemClick {
+        void onColorClick(int color);
+    }
+}

gallery/src/main/res/drawable/bg_color_circle.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+    <solid android:color="@android:color/transparent"/>
+    <stroke android:width="2dp" android:color="@android:color/white"/>
+    <size android:width="32dp" android:height="32dp"/>
+</shape>

gallery/src/main/res/drawable/bg_color_circle_border.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+    <stroke android:width="2dp" android:color="@android:color/white"/>
+    <size android:width="36dp" android:height="36dp"/>
+</shape>

gallery/src/main/res/drawable/bg_dialog.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="@android:color/black"/>
+    <stroke android:width="2dp" android:color="@android:color/white"/>
+</shape>

gallery/src/main/res/drawable/ic_cover_reset.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+
+    <!-- 底层：黑色方框+对勾 -->
+    <path
+        android:fillColor="#000000"
+        android:pathData="M21,3H3C1.9,3 1,3.9 1,5v14c0,1.1 0.9,2 2,2h18c1.1,0 2,-0.9 2,-2V5C23,3.9 22.1,3 21,3zM21,19H3V5h18V19z"/>
+    <path
+        android:fillColor="#000000"
+        android:pathData="M9,12l2,2l4,-4l1.5,1.5L11,17l-3,-3z"/>
+
+    <!-- 上层 纯白色逆时针箭头 -->
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M12.63,2C18.16,2 22.64,6.5 22.64,12C22.64,17.5 18.16,22 12.63,22C9.12,22 6.05,20.18 4.26,17.43L5.84,16.18C7.25,18.47 9.76,20 12.64,20A8,8 0,0 0,20.64 12A8,8 0,0 0,12.64 4C8.56,4 5.2,7.06 4.71,11H7.47L3.73,14.73L0,11H2.69C3.19,5.95 7.45,2 12.63,2"/>
+
+</vector>

gallery/src/main/res/layout/activity_crop.xml

@@ -15,17 +15,45 @@
 
         <ImageView
             android:id="@+id/btn_close"
-            android:layout_width="48dp"
-            android:layout_height="48dp"
-            android:padding="12dp"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:padding="5dp"
             android:src="@drawable/ic_close"
             android:background="?attr/selectableItemBackgroundBorderless"/>
 
+        <TextView
+            android:id="@+id/textview_window_name"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="封面剪裁"
+            android:textColor="@android:color/white"
+            android:textSize="18sp"
+            android:layout_gravity="center_vertical"
+            android:layout_weight="1"
+            android:gravity="center"
+            android:layout_marginEnd="8dp"/>
+
+        <FrameLayout
+            android:id="@+id/color_icon_container"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:layout_marginStart="8dp"
+            android:background="@android:color/transparent">
+
+            <View
+                android:id="@+id/color_view"
+                android:layout_width="32dp"
+                android:layout_height="32dp"
+                android:layout_gravity="center"
+                android:background="@drawable/bg_color_circle"/>
+
+        </FrameLayout>
+
         <ImageView
             android:id="@+id/btn_color_pick"
-            android:layout_width="48dp"
-            android:layout_height="48dp"
-            android:padding="12dp"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:padding="5dp"
             android:src="@drawable/ic_color_pick"
             android:background="?attr/selectableItemBackgroundBorderless"/>
 
@@ -34,11 +62,19 @@
             android:layout_height="0dp"
             android:layout_weight="1"/>
 
+        <ImageView
+            android:id="@+id/btn_info"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:padding="5dp"
+            android:src="@drawable/ic_info"
+            android:background="?attr/selectableItemBackgroundBorderless"/>
+
         <ImageView
             android:id="@+id/btn_done"
-            android:layout_width="48dp"
-            android:layout_height="48dp"
-            android:padding="12dp"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:padding="5dp"
             android:src="@drawable/ic_done"
             android:background="?attr/selectableItemBackgroundBorderless"/>
 

gallery/src/main/res/layout/dialog_color_palette.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="@drawable/bg_dialog"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/title_text"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textSize="16sp"
+        android:textColor="@android:color/white"
+        android:textStyle="bold"/>
+
+</FrameLayout>

gallery/src/main/res/layout/dialog_crop_info.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="16dp"
+    android:background="@drawable/bg_dialog">
+
+    <TextView
+        android:id="@+id/info_text"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textSize="14sp"
+        android:fontFamily="monospace"
+        android:textColor="@android:color/white"/>
+
+    <ImageView
+        android:id="@+id/preview_image"
+        android:layout_width="match_parent"
+        android:layout_height="200dp"
+        android:layout_marginTop="16dp"
+        android:scaleType="fitCenter"
+        android:background="@android:color/black"/>
+
+</LinearLayout>

gallery/src/main/res/layout/item_color_icon.xml

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="40dp"
+    android:layout_height="40dp">
+
+    <View
+        android:id="@+id/color_view"
+        android:layout_width="32dp"
+        android:layout_height="32dp"
+        android:layout_gravity="center"
+        android:background="@drawable/bg_color_circle"/>
+
+    <View
+        android:layout_width="36dp"
+        android:layout_height="36dp"
+        android:layout_gravity="center"
+        android:background="@drawable/bg_color_circle_border"/>
+
+</FrameLayout>

gallery/src/main/res/menu/menu_main.xml

@@ -2,6 +2,18 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
     
+    <item
+        android:id="@+id/action_gallery"
+        android:title="@string/system_gallery"
+        android:icon="@drawable/ic_cover"
+        app:showAsAction="ifRoom"/>
+    
+    <item
+        android:id="@+id/action_reset_gallery"
+        android:title="@string/reset_gallery"
+        android:icon="@drawable/ic_cover_reset"
+        app:showAsAction="ifRoom"/>
+     
     <item
         android:id="@+id/action_trash"
         android:title="@string/trash"

gallery/src/main/res/values/strings.xml

@@ -18,4 +18,6 @@
     <string name="no">No</string>
     <string name="debug_log">Debug Log</string>
     <string name="debug_message">Debug log message</string>
+    <string name="system_gallery">系统相册</string>
+    <string name="reset_gallery">重置</string>
 </resources>

gallery/src/main/res/values/styles.xml

@@ -8,4 +8,9 @@
         <item name="colorAccent">@color/colorAccent</item>
     </style>
 
+    <style name="ColorPaletteDialog" parent="Theme.AppCompat.Light.NoActionBar">
+        <item name="android:windowBackground">@android:color/transparent</item>
+        <item name="android:windowIsFloating">false</item>
+    </style>
+
 </resources>