饭菜规划功能

example/app/src/main/AndroidManifest.xml

@@ -30,6 +30,10 @@
             android:name=".MealPlanningActivity"
             android:exported="false"
             android:screenOrientation="portrait" />
+        <activity
+            android:name=".MealPlanningHistoryActivity"
+            android:exported="false"
+            android:screenOrientation="portrait" />
 
         <provider
             android:name="androidx.core.content.FileProvider"

example/app/src/main/java/com/ruilaizi/example/MealPlanningActivity.java

@@ -3,6 +3,7 @@ package com.ruilaizi.example;
 import android.content.ClipData;
 import android.content.ClipboardManager;
 import android.content.Context;
+import android.content.Intent;
 import android.os.Bundle;
 import android.view.View;
 import android.widget.ArrayAdapter;
@@ -16,6 +17,7 @@ import androidx.appcompat.app.AppCompatActivity;
 import androidx.lifecycle.ViewModelProvider;
 
 import com.google.android.material.button.MaterialButton;
+import com.google.android.material.slider.Slider;
 import com.google.android.material.snackbar.Snackbar;
 import com.google.android.material.textfield.TextInputEditText;
 import com.ruilaizi.example.data.meal.MealPlanGenerator;
@@ -43,11 +45,33 @@ public class MealPlanningActivity extends AppCompatActivity {
 
         setupSpinners();
         binding.btnBack.setOnClickListener(v -> finish());
+        if (binding.btnMealHistory != null) {
+            binding.btnMealHistory.setOnClickListener(v -> openHistory());
+        }
         binding.btnGenerate.setOnClickListener(v -> doGenerate());
         binding.btnCopy.setOnClickListener(v -> copyResult());
         observeViewModel();
     }
 
+    private static final int REQ_MEAL_HISTORY = 2001;
+
+    private void openHistory() {
+        startActivityForResult(new Intent(this, MealPlanningHistoryActivity.class), REQ_MEAL_HISTORY);
+    }
+
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (requestCode == REQ_MEAL_HISTORY && resultCode == RESULT_OK && data != null) {
+            String content = data.getStringExtra(MealPlanningHistoryActivity.EXTRA_MEAL_PLAN_CONTENT);
+            if (content != null && !content.isEmpty()) {
+                binding.tvResult.setText(content);
+                binding.tvResult.setTextColor(getResources().getColor(R.color.colorTextDark, getTheme()));
+                Snackbar.make(binding.getRoot(), "已填入规划结果", Snackbar.LENGTH_SHORT).show();
+            }
+        }
+    }
+
     private void setupSpinners() {
         ArrayAdapter<CharSequence> regionAdapter = ArrayAdapter.createFromResource(this, R.array.meal_region_types, android.R.layout.simple_spinner_item);
         regionAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
@@ -69,6 +93,37 @@ public class MealPlanningActivity extends AppCompatActivity {
         binding.spinnerBudget.setSelection(1); // 50-100元
     }
 
+    /** 与主界面 GenerationRepository 一致：0 短 1 中 2 长 */
+    private static int levelToMaxTokens(int level) {
+        switch (level) {
+            case 0: return 256;
+            case 1: return 512;
+            case 2: return 1024;
+            default: return 512;
+        }
+    }
+
+    /** 与主界面一致：0 保守 1 平衡 2 创意 */
+    private static float levelToTemperature(int level) {
+        switch (level) {
+            case 0: return 0.3f;
+            case 1: return 0.7f;
+            case 2: return 1.2f;
+            default: return 0.7f;
+        }
+    }
+
+    private void setupSliders() {
+        Slider lengthSlider = binding.sliderMealLength;
+        if (lengthSlider != null) {
+            lengthSlider.setValue(1f);
+        }
+        Slider tempSlider = binding.sliderMealTemperature;
+        if (tempSlider != null) {
+            tempSlider.setValue(1f);
+        }
+    }
+
     private void doGenerate() {
         String hometown = getText(binding.etHometown);
         if (hometown.isEmpty()) {
@@ -83,6 +138,10 @@ public class MealPlanningActivity extends AppCompatActivity {
         params.setPreferences(getText(binding.etPreferences));
         params.setDietaryRestrictions(getText(binding.etDietary));
         params.setBudget(BUDGET_VALUES[binding.spinnerBudget.getSelectedItemPosition()]);
+        int lengthLevel = binding.sliderMealLength != null ? (int) binding.sliderMealLength.getValue() : 1;
+        int tempLevel = binding.sliderMealTemperature != null ? (int) binding.sliderMealTemperature.getValue() : 1;
+        params.setMaxTokens(levelToMaxTokens(lengthLevel));
+        params.setTemperature(levelToTemperature(tempLevel));
 
         viewModel.generate(params);
     }

example/app/src/main/java/com/ruilaizi/example/MealPlanningHistoryActivity.java

@@ -0,0 +1,54 @@
+package com.ruilaizi.example;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.TextView;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.ruilaizi.example.adapter.MealPlanHistoryAdapter;
+import com.ruilaizi.example.data.meal.MealPlanningRepository;
+import com.ruilaizi.example.databinding.ActivityMealPlanningHistoryBinding;
+
+/**
+ * 饭菜规划历史列表。
+ */
+public class MealPlanningHistoryActivity extends AppCompatActivity {
+
+    /** 从历史项「使用」时，通过 Intent 带回的规划正文 */
+    public static final String EXTRA_MEAL_PLAN_CONTENT = "meal_plan_content";
+
+    private ActivityMealPlanningHistoryBinding binding;
+    private MealPlanHistoryAdapter adapter;
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        binding = ActivityMealPlanningHistoryBinding.inflate(getLayoutInflater());
+        setContentView(binding.getRoot());
+
+        adapter = new MealPlanHistoryAdapter();
+        adapter.setOnUseMealPlanListener(content -> {
+            Intent data = new Intent();
+            data.putExtra(EXTRA_MEAL_PLAN_CONTENT, content);
+            setResult(RESULT_OK, data);
+            finish();
+        });
+
+        binding.recycler.setLayoutManager(new LinearLayoutManager(this));
+        binding.recycler.setAdapter(adapter);
+
+        binding.btnBack.setOnClickListener(v -> finish());
+
+        MealPlanningRepository repo = new MealPlanningRepository(getApplication());
+        repo.getRecentMealPlanRecords().observe(this, list -> {
+            adapter.setData(list);
+            binding.emptyText.setVisibility(list == null || list.isEmpty() ? View.VISIBLE : View.GONE);
+        });
+    }
+}

example/app/src/main/java/com/ruilaizi/example/adapter/MealPlanHistoryAdapter.java

@@ -0,0 +1,113 @@
+package com.ruilaizi.example.adapter;
+
+import android.content.ClipData;
+import android.content.ClipboardManager;
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.google.android.material.button.MaterialButton;
+import com.ruilaizi.example.R;
+import com.ruilaizi.example.data.db.MealPlanRecord;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Locale;
+
+public class MealPlanHistoryAdapter extends RecyclerView.Adapter<MealPlanHistoryAdapter.ViewHolder> {
+
+    private final List<MealPlanRecord> list = new ArrayList<>();
+    private OnUseMealPlanListener onUseMealPlanListener;
+
+    public interface OnUseMealPlanListener {
+        void onUseMealPlan(String mealPlanContent);
+    }
+
+    public void setOnUseMealPlanListener(OnUseMealPlanListener listener) {
+        this.onUseMealPlanListener = listener;
+    }
+
+    public void setData(List<MealPlanRecord> data) {
+        list.clear();
+        if (data != null) {
+            list.addAll(data);
+        }
+        notifyDataSetChanged();
+    }
+
+    @NonNull
+    @Override
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_meal_plan_history, parent, false);
+        return new ViewHolder(v);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+        MealPlanRecord r = list.get(position);
+        String summary = "家乡：" + safe(r.hometown) + " | " + safe(r.mealType) + " | " + safe(r.dinerCount) + "人 | " + safe(r.budget) + "元";
+        holder.tvSummary.setText(summary);
+        holder.tvContentPreview.setText(truncate(r.mealPlanContent, 80));
+        holder.tvTime.setText(formatTime(r.createdAt));
+
+        holder.btnUse.setOnClickListener(v -> {
+            if (onUseMealPlanListener != null && r.mealPlanContent != null) {
+                onUseMealPlanListener.onUseMealPlan(r.mealPlanContent);
+            }
+        });
+
+        holder.btnCopy.setOnClickListener(v -> {
+            if (r.mealPlanContent != null && !r.mealPlanContent.isEmpty()) {
+                ClipboardManager cm = (ClipboardManager) holder.itemView.getContext().getSystemService(Context.CLIPBOARD_SERVICE);
+                if (cm != null) {
+                    cm.setPrimaryClip(ClipData.newPlainText("饭菜规划", r.mealPlanContent));
+                }
+            }
+        });
+    }
+
+    @Override
+    public int getItemCount() {
+        return list.size();
+    }
+
+    private static String safe(String s) {
+        return s != null ? s : "";
+    }
+
+    private static String truncate(String s, int maxLen) {
+        if (s == null) return "";
+        s = s.trim();
+        if (s.length() <= maxLen) return s;
+        return s.substring(0, maxLen) + "…";
+    }
+
+    private static String formatTime(long timestamp) {
+        try {
+            return new SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.getDefault()).format(new Date(timestamp));
+        } catch (Exception e) {
+            return "";
+        }
+    }
+
+    static class ViewHolder extends RecyclerView.ViewHolder {
+        TextView tvSummary, tvContentPreview, tvTime;
+        MaterialButton btnUse, btnCopy;
+
+        ViewHolder(View itemView) {
+            super(itemView);
+            tvSummary = itemView.findViewById(R.id.tv_summary);
+            tvContentPreview = itemView.findViewById(R.id.tv_content_preview);
+            tvTime = itemView.findViewById(R.id.tv_time);
+            btnUse = itemView.findViewById(R.id.btn_use);
+            btnCopy = itemView.findViewById(R.id.btn_copy);
+        }
+    }
+}

example/app/src/main/java/com/ruilaizi/example/data/api/OpenAICompletionService.java

@@ -42,7 +42,7 @@ public class OpenAICompletionService {
         conn.setRequestMethod("POST");
         conn.setDoOutput(true);
         conn.setConnectTimeout(30000);
-        conn.setReadTimeout(60000);
+        conn.setReadTimeout(120000);  // 120s，饭菜规划等长文生成易超时
         conn.setRequestProperty("Content-Type", "application/json");
         conn.setRequestProperty("Authorization", "Bearer " + apiKey);
 

example/app/src/main/java/com/ruilaizi/example/data/db/AppDatabase.java

@@ -6,7 +6,7 @@ import androidx.room.Database;
 import androidx.room.Room;
 import androidx.room.RoomDatabase;
 
-@Database(entities = {GenerationRecord.class, OptimizeRecord.class, DirectAnswerRecord.class}, version = 3, exportSchema = false)
+@Database(entities = {GenerationRecord.class, OptimizeRecord.class, DirectAnswerRecord.class, MealPlanRecord.class}, version = 4, exportSchema = false)
 public abstract class AppDatabase extends RoomDatabase {
 
     private static volatile AppDatabase INSTANCE;
@@ -29,4 +29,5 @@ public abstract class AppDatabase extends RoomDatabase {
     public abstract GenerationRecordDao generationRecordDao();
     public abstract OptimizeRecordDao optimizeRecordDao();
     public abstract DirectAnswerRecordDao directAnswerRecordDao();
+    public abstract MealPlanRecordDao mealPlanRecordDao();
 }

example/app/src/main/java/com/ruilaizi/example/data/db/MealPlanRecord.java

@@ -0,0 +1,43 @@
+package com.ruilaizi.example.data.db;
+
+import androidx.room.Entity;
+import androidx.room.Ignore;
+import androidx.room.PrimaryKey;
+
+import com.ruilaizi.example.data.meal.MealPlanGenerator;
+
+/**
+ * 饭菜规划历史记录。
+ */
+@Entity(tableName = "meal_plan_records")
+public class MealPlanRecord {
+
+    @PrimaryKey(autoGenerate = true)
+    public long id;
+
+    public String regionType;
+    public String dinerCount;
+    public String mealType;
+    public String hometown;
+    public String preferences;
+    public String dietaryRestrictions;
+    public String budget;
+    /** 生成的规划正文（Markdown） */
+    public String mealPlanContent;
+    public long createdAt;
+
+    public MealPlanRecord() {}
+
+    @Ignore
+    public MealPlanRecord(MealPlanGenerator.MealPlanParams params, String mealPlanContent) {
+        this.regionType = params.getRegionType();
+        this.dinerCount = params.getDinerCount();
+        this.mealType = params.getMealType();
+        this.hometown = params.getHometown();
+        this.preferences = params.getPreferences();
+        this.dietaryRestrictions = params.getDietaryRestrictions();
+        this.budget = params.getBudget();
+        this.mealPlanContent = mealPlanContent;
+        this.createdAt = System.currentTimeMillis();
+    }
+}

example/app/src/main/java/com/ruilaizi/example/data/db/MealPlanRecordDao.java

@@ -0,0 +1,21 @@
+package com.ruilaizi.example.data.db;
+
+import androidx.lifecycle.LiveData;
+import androidx.room.Dao;
+import androidx.room.Insert;
+import androidx.room.Query;
+
+import java.util.List;
+
+@Dao
+public interface MealPlanRecordDao {
+
+    @Insert
+    long insert(MealPlanRecord record);
+
+    @Query("SELECT * FROM meal_plan_records ORDER BY createdAt DESC LIMIT 50")
+    LiveData<List<MealPlanRecord>> getRecentRecords();
+
+    @Query("DELETE FROM meal_plan_records WHERE id NOT IN (SELECT id FROM meal_plan_records ORDER BY createdAt DESC LIMIT 50)")
+    void keepOnlyRecent();
+}

example/app/src/main/java/com/ruilaizi/example/data/meal/MealPlanGenerator.java

@@ -8,8 +8,9 @@ import com.ruilaizi.example.data.api.OpenAICompletionService;
  */
 public class MealPlanGenerator {
 
-    private static final float TEMPERATURE = 0.7f;
-    private static final int MAX_TOKENS = 2000;
+    /** 默认与 Flask 一致，可由 MealPlanParams 覆盖 */
+    private static final float DEFAULT_TEMPERATURE = 0.7f;
+    private static final int DEFAULT_MAX_TOKENS = 1000;
 
     private final OpenAICompletionService completionService;
     private final ApiKeyProvider apiKeyProvider;
@@ -28,6 +29,7 @@ public class MealPlanGenerator {
             throw new Exception("请先在设置中配置 API Key");
         }
         String regionType = params.getRegionType() != null ? params.getRegionType() : "全国";
+        // 与 Flask meal_planning.py 完全一致的系统提示
         String systemPrompt = "你是一位专业的" + regionType + "智能饭菜清单规划师和营养搭配专家。\n\n"
                 + "请按以下**固定结构**输出 Markdown，便于用户查阅：\n\n"
                 + "**一、菜品推荐与搭配思路**\n"
@@ -50,20 +52,24 @@ public class MealPlanGenerator {
         if (hometown.isEmpty()) {
             throw new Exception("请输入用餐者家乡");
         }
+        // 默认值与 Flask generate_meal_plan_api 一致
         String dinerCount = params.getDinerCount() != null ? params.getDinerCount() : "2";
         String mealType = params.getMealType() != null ? params.getMealType() : "午餐";
-        String preferences = params.getPreferences() != null ? params.getPreferences().trim() : "无";
-        String dietaryRestrictions = params.getDietaryRestrictions() != null ? params.getDietaryRestrictions().trim() : "无";
+        String preferences = params.getPreferences() != null ? params.getPreferences().trim() : "";
+        String dietaryRestrictions = params.getDietaryRestrictions() != null ? params.getDietaryRestrictions().trim() : "";
         String budget = params.getBudget() != null ? params.getBudget() : "100";
 
+        // 与 Flask user_prompt 逐字一致：为{diner_count}人制定{meal_type}饭菜清单。家乡：{hometown}。喜好：{preferences}。禁忌：{dietary_restrictions}。预算：{budget}元。请按「一、二、三」结构输出...
         String userPrompt = "为" + dinerCount + "人制定" + mealType + "饭菜清单。家乡：" + hometown
                 + "。喜好：" + preferences + "。禁忌：" + dietaryRestrictions + "。预算：" + budget
                 + "元。请按「一、二、三」结构输出，每道菜包含菜品特色、食材清单、制作步骤、营养信息、预算估算。";
 
-        return completionService.chat(systemPrompt, userPrompt, TEMPERATURE, MAX_TOKENS, apiKey);
+        float temperature = params.getTemperature() != null ? params.getTemperature() : DEFAULT_TEMPERATURE;
+        int maxTokens = params.getMaxTokens() != null ? params.getMaxTokens() : DEFAULT_MAX_TOKENS;
+        return completionService.chat(systemPrompt, userPrompt, temperature, maxTokens, apiKey);
     }
 
-    /** 饭菜规划参数，与 Web 端一致 */
+    /** 饭菜规划参数，与 Web 端一致；temperature / maxTokens 与优化提示词一样可配置。 */
     public static class MealPlanParams {
         private String regionType;
         private String dinerCount;
@@ -72,6 +78,10 @@ public class MealPlanGenerator {
         private String preferences;
         private String dietaryRestrictions;
         private String budget;
+        /** 创意程度，null 时用默认 0.7 */
+        private Float temperature;
+        /** 最大 token 数，null 时用默认 1000 */
+        private Integer maxTokens;
 
         public String getRegionType() { return regionType; }
         public void setRegionType(String regionType) { this.regionType = regionType; }
@@ -87,5 +97,9 @@ public class MealPlanGenerator {
         public void setDietaryRestrictions(String dietaryRestrictions) { this.dietaryRestrictions = dietaryRestrictions; }
         public String getBudget() { return budget; }
         public void setBudget(String budget) { this.budget = budget; }
+        public Float getTemperature() { return temperature; }
+        public void setTemperature(Float temperature) { this.temperature = temperature; }
+        public Integer getMaxTokens() { return maxTokens; }
+        public void setMaxTokens(Integer maxTokens) { this.maxTokens = maxTokens; }
     }
 }

example/app/src/main/java/com/ruilaizi/example/data/meal/MealPlanningRepository.java

@@ -2,21 +2,30 @@ package com.ruilaizi.example.data.meal;
 
 import android.content.Context;
 
+import androidx.lifecycle.LiveData;
+
 import com.ruilaizi.example.data.api.ApiKeyProvider;
 import com.ruilaizi.example.data.api.OpenAICompletionService;
+import com.ruilaizi.example.data.db.AppDatabase;
+import com.ruilaizi.example.data.db.MealPlanRecord;
+import com.ruilaizi.example.data.db.MealPlanRecordDao;
+
+import java.util.List;
 
 /**
- * 饭菜规划仓库：本地调用 DeepSeek 生成饭菜清单，与 example 项目提示词优化/生成同构。
+ * 饭菜规划仓库：本地调用 DeepSeek 生成饭菜清单，与 example 项目提示词优化/生成同构；支持历史记录。
  */
 public class MealPlanningRepository {
 
     private final ApiKeyProvider apiKeyProvider;
     private final MealPlanGenerator generator;
+    private final MealPlanRecordDao mealPlanRecordDao;
 
     public MealPlanningRepository(Context context) {
         apiKeyProvider = new ApiKeyProvider(context);
         OpenAICompletionService completionService = new OpenAICompletionService(null);
         generator = new MealPlanGenerator(completionService, apiKeyProvider);
+        mealPlanRecordDao = AppDatabase.getInstance(context).mealPlanRecordDao();
     }
 
     public String getApiKey() {
@@ -29,4 +38,18 @@ public class MealPlanningRepository {
     public String generateMealPlan(MealPlanGenerator.MealPlanParams params) throws Exception {
         return generator.generate(params);
     }
+
+    /**
+     * 保存一条规划历史。需在后台线程调用。
+     */
+    public void saveMealPlanRecord(MealPlanRecord record) {
+        new Thread(() -> {
+            mealPlanRecordDao.insert(record);
+            mealPlanRecordDao.keepOnlyRecent();
+        }).start();
+    }
+
+    public LiveData<List<MealPlanRecord>> getRecentMealPlanRecords() {
+        return mealPlanRecordDao.getRecentRecords();
+    }
 }

example/app/src/main/java/com/ruilaizi/example/ui/MealPlanningViewModel.java

@@ -10,6 +10,7 @@ import androidx.lifecycle.MutableLiveData;
 import com.ruilaizi.example.data.meal.MealPlanGenerator;
 import com.ruilaizi.example.data.meal.MealPlanningRepository;
 
+import java.net.SocketTimeoutException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 
@@ -52,9 +53,17 @@ public class MealPlanningViewModel extends AndroidViewModel {
             try {
                 final String plan = repository.generateMealPlan(params);
                 resultLiveData.postValue(plan);
+                if (plan != null && !plan.isEmpty()) {
+                    repository.saveMealPlanRecord(new com.ruilaizi.example.data.db.MealPlanRecord(params, plan));
+                }
                 snackbarLiveData.postValue("饭菜规划生成完成");
             } catch (Exception e) {
-                errorLiveData.postValue(e != null ? e.getMessage() : "生成失败");
+                String raw = e != null ? e.getMessage() : "";
+                boolean isTimeout = e instanceof SocketTimeoutException
+                        || (e.getCause() != null && e.getCause() instanceof SocketTimeoutException)
+                        || (raw != null && (raw.toLowerCase().contains("timeout") || raw.contains("timed out")));
+                String msg = isTimeout ? "请求超时，请检查网络或稍后重试" : (raw != null && !raw.isEmpty() ? raw : "生成失败");
+                errorLiveData.postValue(msg);
             } finally {
                 loadingLiveData.postValue(false);
             }

example/app/src/main/res/layout/activity_meal_planning.xml

@@ -35,7 +35,12 @@
                 android:textSize="20sp"
                 android:textStyle="bold"
                 android:gravity="center" />
-            <View android:layout_width="48dp" android:layout_height="wrap_content" />
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btn_meal_history"
+                style="@style/Widget.MaterialComponents.Button.TextButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/btn_history" />
         </LinearLayout>
 
         <!-- 规划参数卡片 -->
@@ -108,7 +113,43 @@
 
                 <!-- 预算 -->
                 <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="预算范围（元）" android:textSize="12sp" android:textColor="@color/colorTextSecondary" android:layout_marginBottom="4dp" />
-                <Spinner android:id="@+id/spinner_budget" android:layout_width="match_parent" android:layout_height="48dp" android:layout_marginBottom="16dp" />
+                <Spinner android:id="@+id/spinner_budget" android:layout_width="match_parent" android:layout_height="48dp" android:layout_marginBottom="12dp" />
+
+                <!-- 生成长度：与主界面生成一致 -->
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="生成长度" android:textSize="12sp" android:textColor="@color/colorTextSecondary" android:layout_marginBottom="4dp" />
+                <com.google.android.material.slider.Slider
+                    android:id="@+id/slider_meal_length"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:valueFrom="0"
+                    android:valueTo="2"
+                    android:stepSize="1"
+                    android:value="1"
+                    app:labelBehavior="gone"
+                    android:layout_marginBottom="4dp" />
+                <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_marginBottom="12dp">
+                    <TextView android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="@string/length_short" android:textSize="12sp" android:textColor="@color/colorTextSecondary" />
+                    <TextView android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="@string/length_medium" android:textSize="12sp" android:gravity="center" android:textColor="@color/colorTextSecondary" />
+                    <TextView android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="@string/length_long" android:textSize="12sp" android:gravity="end" android:textColor="@color/colorTextSecondary" />
+                </LinearLayout>
+
+                <!-- 创意程度 -->
+                <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="创意程度" android:textSize="12sp" android:textColor="@color/colorTextSecondary" android:layout_marginBottom="4dp" />
+                <com.google.android.material.slider.Slider
+                    android:id="@+id/slider_meal_temperature"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:valueFrom="0"
+                    android:valueTo="2"
+                    android:stepSize="1"
+                    android:value="1"
+                    app:labelBehavior="gone"
+                    android:layout_marginBottom="4dp" />
+                <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_marginBottom="16dp">
+                    <TextView android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="@string/temp_conservative" android:textSize="12sp" android:textColor="@color/colorTextSecondary" />
+                    <TextView android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="@string/temp_balanced" android:textSize="12sp" android:gravity="center" android:textColor="@color/colorTextSecondary" />
+                    <TextView android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:text="@string/temp_creative" android:textSize="12sp" android:gravity="end" android:textColor="@color/colorTextSecondary" />
+                </LinearLayout>
 
                 <com.google.android.material.button.MaterialButton
                     android:id="@+id/btn_generate"

example/app/src/main/res/layout/activity_meal_planning_history.xml

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:background="@color/colorSurface">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:gravity="center_vertical"
+        android:padding="16dp"
+        android:background="@color/colorCard">
+        <com.google.android.material.button.MaterialButton
+            android:id="@+id/btn_back"
+            style="@style/Widget.MaterialComponents.Button.TextButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/history_back"
+            android:textColor="@color/colorPrimary" />
+        <TextView
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:text="@string/meal_planning_history_title"
+            android:textColor="@color/colorPrimary"
+            android:textSize="20sp"
+            android:textStyle="bold" />
+    </LinearLayout>
+
+    <FrameLayout
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1">
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/recycler"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:padding="12dp"
+            android:clipToPadding="false"
+            tools:listitem="@layout/item_meal_plan_history" />
+        <TextView
+            android:id="@+id/empty_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:text="@string/meal_planning_history_empty"
+            android:textColor="@color/colorTextSecondary"
+            android:visibility="gone" />
+    </FrameLayout>
+</LinearLayout>

example/app/src/main/res/layout/item_meal_plan_history.xml

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.google.android.material.card.MaterialCardView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    app:cardBackgroundColor="@color/colorCard"
+    app:cardElevation="2dp"
+    app:cardCornerRadius="12dp"
+    android:layout_marginBottom="12dp">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="16dp">
+
+        <TextView
+            android:id="@+id/tv_summary"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textColor="@color/colorTextDark"
+            android:textSize="14sp"
+            android:maxLines="2"
+            android:ellipsize="end"
+            tools:text="家乡：四川 | 午餐 | 2人 | 50-100元" />
+
+        <TextView
+            android:id="@+id/tv_content_preview"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="6dp"
+            android:textColor="@color/colorText"
+            android:textSize="12sp"
+            android:maxLines="3"
+            android:ellipsize="end"
+            tools:text="一、菜品推荐与搭配思路…" />
+
+        <TextView
+            android:id="@+id/tv_time"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="6dp"
+            android:textColor="@color/colorTextSecondary"
+            android:textSize="11sp"
+            tools:text="2025-03-02 14:30" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:layout_marginTop="8dp">
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btn_use"
+                style="@style/Widget.MaterialComponents.Button.TextButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/history_use" />
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/btn_copy"
+                style="@style/Widget.MaterialComponents.Button.TextButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/btn_copy" />
+        </LinearLayout>
+    </LinearLayout>
+</com.google.android.material.card.MaterialCardView>

example/app/src/main/res/values/strings.xml

@@ -36,4 +36,6 @@
     <string name="meal_planning_btn_generate">生成饭菜规划</string>
     <string name="meal_planning_result_placeholder">填写左侧参数后点击「生成饭菜规划」</string>
     <string name="btn_meal_planning">饭菜规划</string>
+    <string name="meal_planning_history_title">规划历史</string>
+    <string name="meal_planning_history_empty">暂无规划记录</string>
 </resources>