20241205第三次提交

基本功能完成！

app/src/main/java/com/wutongyu/mannyburger/MainActivity.java

@@ -1,5 +1,6 @@
 package com.wutongyu.mannyburger;
 
+/*
 import android.content.Intent;
 import android.os.Bundle;
 import android.view.LayoutInflater;
@@ -140,4 +141,285 @@ public View getView(int position, View convertView, ViewGroup parent) {
             return convertView;
         }
     }
+}*/
+
+/*
+import android.content.Intent;
+import android.os.Bundle;
+import androidx.appcompat.app.AppCompatActivity;
+import java.util.ArrayList;
+import java.util.List;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        // Example data to pass to OrderActivity
+        List<Item> itemList = new ArrayList<>();
+        itemList.add(new Item("汉堡", 20.0));
+        itemList.add(new Item("薯条", 5.0));
+
+        double totalPrice = 25.0;
+        StringBuilder orderDetailsBuilder = new StringBuilder();
+        for (Item item : itemList) {
+            orderDetailsBuilder.append(item.getName()).append(" - ").append(item.getPrice()).append("元\n");
+        }
+        String orderDetails = orderDetailsBuilder.toString().trim();
+
+        Intent intent = new Intent(MainActivity.this, OrderActivity.class);
+        intent.putExtra("order_details", orderDetails);
+        intent.putExtra("total_price", totalPrice);
+        startActivity(intent);
+    }
+}*/
+
+
+import android.content.Intent;
+import android.database.Cursor;
+import android.database.sqlite.SQLiteDatabase;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.BaseAdapter;
+import android.widget.Button;
+import android.widget.CheckBox;
+import android.widget.CompoundButton;
+import android.widget.ListView;
+import android.widget.RadioButton;
+import android.widget.RadioGroup;
+import android.widget.TextView;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class MainActivity extends AppCompatActivity {
+
+    private ListView menuItemsListView;
+    private RadioGroup categoriesRadioGroup;
+    private RadioButton orderingRadioButton;
+    private RadioButton shopRadioButton;
+    private Button allOrderButton;
+    private Button submitOrderButton;
+    private TextView bottomCartTextView;
+    private ProductAdapter productAdapter;
+    private List<Product> productList;
+    private List<Product> selectedProducts;
+    private double totalPrice;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        // Initialize views
+        menuItemsListView = findViewById(R.id.menuItems);
+        categoriesRadioGroup = findViewById(R.id.categories);
+        orderingRadioButton = findViewById(R.id.ordering);
+        shopRadioButton = findViewById(R.id.shop);
+        allOrderButton = findViewById(R.id.AllOrderButton);
+        submitOrderButton = findViewById(R.id.SubmitOrderButton);
+        bottomCartTextView = findViewById(R.id.bottomCartTextView);
+
+        // Initialize database and load products
+        ProductDatabaseHelper dbHelper = new ProductDatabaseHelper(this);
+        productList = loadProductsFromDatabase(dbHelper.getWritableDatabase());
+        selectedProducts = new ArrayList<>();
+
+        // Set up adapter for ListView
+        productAdapter = new ProductAdapter();
+        menuItemsListView.setAdapter(productAdapter);
+
+        // Handle category selection
+        categoriesRadioGroup.setOnCheckedChangeListener((group, checkedId) -> {
+            if (checkedId == R.id.ordering) {
+                menuItemsListView.setVisibility(View.VISIBLE);
+                bottomCartTextView.setVisibility(View.VISIBLE);
+                submitOrderButton.setVisibility(View.VISIBLE);
+            } else {
+                menuItemsListView.setVisibility(View.GONE);
+                bottomCartTextView.setVisibility(View.GONE);
+                submitOrderButton.setVisibility(View.GONE);
+            }
+        });
+
+        // Handle All Orders button click
+        allOrderButton.setOnClickListener(v -> {
+            Intent intent = new Intent(MainActivity.this, AllOrderActivity.class);
+            startActivity(intent);
+        });
+
+        // Handle Submit Order button click
+        submitOrderButton.setOnClickListener(v -> {
+            StringBuilder orderDetailsBuilder = new StringBuilder();
+            for (Product product : selectedProducts) {
+                orderDetailsBuilder.append(product.getName()).append(" - ").append(product.getPrice()).append("元\n");
+            }
+            String orderDetails = orderDetailsBuilder.toString().trim();
+
+            Intent intent = new Intent(MainActivity.this, OrderActivity.class);
+            intent.putExtra("order_details", orderDetails);
+            intent.putExtra("total_price", totalPrice);
+            startActivity(intent);
+        });
+    }
+
+/*    private List<Product> loadProductsFromDatabase(SQLiteDatabase db) {
+        List<Product> products = new ArrayList<>();
+        Cursor cursor = db.query(ProductDatabaseHelper.TABLE_PRODUCTS, new String[]{"pid", "pname", "shop_price"}, null, null, null, null, null);
+        while (cursor.moveToNext()) {
+            int pid = cursor.getInt(cursor.getColumnIndexOrThrow("pid"));
+            String pname = cursor.getString(cursor.getColumnIndexOrThrow("pname"));
+            double shopPrice = cursor.getDouble(cursor.getColumnIndexOrThrow("shop_price"));
+            products.add(new Product(pid, pname, shopPrice));
+        }
+        cursor.close();
+        return products;
+    }*/
+
+    private List<Product> loadProductsFromDatabase(SQLiteDatabase db) {
+        List<Product> products = new ArrayList<>();
+        String table = ProductDatabaseHelper.getTableProducts(); // 使用公共方法获取表名
+        Cursor cursor = db.query(table, new String[]{"pid", "pname", "shop_price"}, null, null, null, null, null);
+        while (cursor.moveToNext()) {
+            int pid = cursor.getInt(cursor.getColumnIndexOrThrow("pid"));
+            String pname = cursor.getString(cursor.getColumnIndexOrThrow("pname"));
+            double shopPrice = cursor.getDouble(cursor.getColumnIndexOrThrow("shop_price"));
+            products.add(new Product(pid, pname, shopPrice));
+        }
+        cursor.close();
+        return products;
+    }
+
+
+    /*private class ProductAdapter extends BaseAdapter {
+
+        @Override
+        public int getCount() {
+            return productList.size();
+        }
+
+        @Override
+        public Object getItem(int position) {
+            return productList.get(position);
+        }
+
+        @Override
+        public long getItemId(int position) {
+            return productList.get(position).getId();
+        }
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            ViewHolder holder;
+            if (convertView == null) {
+                convertView = LayoutInflater.from(MainActivity.this).inflate(android.R.layout.simple_list_item_multiple_choice, parent, false);
+                holder = new ViewHolder();
+                holder.productNameTextView = convertView.findViewById(android.R.id.text1);
+                holder.checkBox = convertView.findViewById(android.R.id.checkbox);
+                convertView.setTag(holder);
+            } else {
+                holder = (ViewHolder) convertView.getTag();
+            }
+
+            Product product = productList.get(position);
+            holder.productNameTextView.setText(product.getName() + " - ￥" + product.getPrice());
+
+            holder.checkBox.setOnCheckedChangeListener(null);
+            holder.checkBox.setChecked(selectedProducts.contains(product));
+
+            holder.checkBox.setOnCheckedChangeListener((buttonView, isChecked) -> {
+                if (isChecked) {
+                    selectedProducts.add(product);
+                } else {
+                    selectedProducts.remove(product);
+                }
+                updateTotalPrice();
+            });
+
+            return convertView;
+        }
+
+        private void updateTotalPrice() {
+            totalPrice = 0.0;
+            for (Product product : selectedProducts) {
+                totalPrice += product.getPrice();
+            }
+            bottomCartTextView.setText("购物车：￥" + totalPrice);
+        }
+
+        static class ViewHolder {
+            TextView productNameTextView;
+            CheckBox checkBox;
+        }
+    }*/
+
+    private class ProductAdapter extends BaseAdapter {
+
+        @Override
+        public int getCount() {
+            return productList.size();
+        }
+
+        @Override
+        public Object getItem(int position) {
+            return productList.get(position);
+        }
+
+        @Override
+        public long getItemId(int position) {
+            return productList.get(position).getId();
+        }
+
+
+        @Override
+        public View getView(int position, View convertView, ViewGroup parent) {
+            ViewHolder holder;
+            if (convertView == null) {
+                convertView = LayoutInflater.from(MainActivity.this).inflate(R.layout.custom_list_item, parent, false);
+                holder = new ViewHolder();
+                holder.productNameTextView = convertView.findViewById(R.id.productNameTextView);
+                holder.checkBox = convertView.findViewById(R.id.checkbox);
+                convertView.setTag(holder);
+            } else {
+                holder = (ViewHolder) convertView.getTag();
+            }
+
+            Product product = productList.get(position);
+            holder.productNameTextView.setText(product.getName() + " - ￥" + product.getPrice());
+
+            holder.checkBox.setOnCheckedChangeListener(null);
+            holder.checkBox.setChecked(selectedProducts.contains(product));
+
+            holder.checkBox.setOnCheckedChangeListener((buttonView, isChecked) -> {
+                if (isChecked) {
+                    selectedProducts.add(product);
+                } else {
+                    selectedProducts.remove(product);
+                }
+                updateTotalPrice();
+            });
+
+            return convertView;
+        }
+
+        private void updateTotalPrice() {
+            totalPrice = 0.0;
+            for (Product product : selectedProducts) {
+                totalPrice += product.getPrice();
+            }
+            bottomCartTextView.setText("购物车：￥" + totalPrice);
+        }
+
+        class ViewHolder {
+            TextView productNameTextView;
+            CheckBox checkBox;
+        }
+    }
+
 }

app/src/main/java/com/wutongyu/mannyburger/Product.java

@@ -0,0 +1,50 @@
+package com.wutongyu.mannyburger;
+
+public class Product {
+    private int id;
+    private String name;
+    private double price;
+
+    public Product() {
+        super();
+    }
+
+    public Product(int id, String name, double price) {
+        this.id = id;
+        this.name = name;
+        this.price = price;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public double getPrice() {
+        return price;
+    }
+
+    public void setPrice(double price) {
+        this.price = price;
+    }
+
+    @Override
+    public String toString() {
+        return "Product{" +
+                "id=" + id +
+                ", name='" + name + '\'' +
+                ", price=" + price +
+                '}';
+    }
+}

app/src/main/java/com/wutongyu/mannyburger/ProductAdapter.java

@@ -0,0 +1,4 @@
+package com.wutongyu.mannyburger;
+
+public class ProductAdapter {
+}