Add favorite Food

Foodify/app/src/main/java/com/waterbase/foodify/Database/Database.java

@@ -59,4 +59,29 @@ public class Database extends SQLiteAssetHelper {
         String query = String.format("DELETE FROM OrderDetail");
         db.execSQL(query);
     }
+
+    //Favorites
+    public void addToFavorites(String foodId){
+        SQLiteDatabase db = getReadableDatabase();
+        String query = String.format("INSERT INTO Favorites(FoodId) VALUES('%s');", foodId);
+        db.execSQL(query);
+    }
+
+    public void removeFromFavorites(String foodId){
+        SQLiteDatabase db = getReadableDatabase();
+        String query = String.format("DELETE FROM Favorites WHERE FoodId='%s';", foodId);
+        db.execSQL(query);
+    }
+
+    public boolean isFavorite(String foodId){
+        SQLiteDatabase db = getReadableDatabase();
+        String query = String.format("SELECT * FROM Favorites WHERE FoodId='%s'", foodId);
+        Cursor cursor = db.rawQuery(query, null);
+        if(cursor.getCount() <= 0){
+            cursor.close();
+            return false;
+        }
+        cursor.close();
+        return true;
+    }
 }

Foodify/app/src/main/java/com/waterbase/foodify/FoodList.java

@@ -23,6 +23,7 @@ import com.google.firebase.database.ValueEventListener;
 import com.mancj.materialsearchbar.MaterialSearchBar;
 import com.squareup.picasso.Picasso;
 import com.waterbase.foodify.Common.Common;
+import com.waterbase.foodify.Database.Database;
 import com.waterbase.foodify.Interface.ItemClickListener;
 import com.waterbase.foodify.Model.Food;
 import com.waterbase.foodify.ViewHolder.FoodViewHolder;
@@ -47,21 +48,21 @@ public class FoodList extends AppCompatActivity {
     List<String> suggestList = new ArrayList<>();
     MaterialSearchBar materialSearchBar;
 
+    //Favorites
+    Database localDB;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_food_list);
 
-        // calling the action bar
-        ActionBar actionBar = getSupportActionBar();
-
-        // showing the back button in action bar
-        actionBar.setDisplayHomeAsUpEnabled(true);
-
         //Firebase
         database = FirebaseDatabase.getInstance();
         foodList = database.getReference("Foods");
 
+        //Local DB
+        localDB = new Database(this);
+
         recyclerView = (RecyclerView) findViewById(R.id.recyler_food);
         recyclerView.setHasFixedSize(true);
         layoutManager = new LinearLayoutManager(this);
@@ -70,7 +71,7 @@ public class FoodList extends AppCompatActivity {
         //Get Intent here
         if(getIntent() != null)
             categoryId = getIntent().getStringExtra("CategoryId");
-            categoryName = getIntent().getStringExtra("CategoryName");
+        categoryName = getIntent().getStringExtra("CategoryName");
         if(!categoryId.isEmpty() && categoryId != null) {
             if(Common.isConnectedToInternet(getBaseContext()))
                 loadListFood(categoryId);
@@ -132,6 +133,12 @@ public class FoodList extends AppCompatActivity {
         });
 
         setTitle(categoryName);
+
+        // calling the action bar
+        ActionBar actionBar = getSupportActionBar();
+
+        // showing the back button in action bar
+        actionBar.setDisplayHomeAsUpEnabled(true);
     }
 
     private void startSearch(CharSequence text) {
@@ -179,28 +186,47 @@ public class FoodList extends AppCompatActivity {
     }
 
     private void loadListFood(String categoryId){
-       adapter = new FirebaseRecyclerAdapter<Food, FoodViewHolder>(Food.class, R.layout.food_item,
+        adapter = new FirebaseRecyclerAdapter<Food, FoodViewHolder>(Food.class, R.layout.food_item,
-               FoodViewHolder.class, foodList.orderByChild("menuId").equalTo(categoryId) // like: Select * from Foods where MenuId = 'categoryId'
+                FoodViewHolder.class, foodList.orderByChild("menuId").equalTo(categoryId) // like: Select * from Foods where MenuId = 'categoryId'
-               ) {
+        ) {
-           @Override
+            @Override
-           protected void populateViewHolder(FoodViewHolder viewHolder, Food model, int position) {
+            protected void populateViewHolder(FoodViewHolder viewHolder, Food model, int position) {
-               viewHolder.food_name.setText(model.getName());
+                viewHolder.food_name.setText(model.getName());
-               Picasso.with(getBaseContext()).load(model.getImage()).into(viewHolder.food_image);
+                Picasso.with(getBaseContext()).load(model.getImage()).into(viewHolder.food_image);
 
-               final Food local = model;
+                //Add Favorites
-               viewHolder.setItemClickListener(new ItemClickListener() {
+                if(localDB.isFavorite(adapter.getRef(position).getKey()))
-                   @Override
+                    viewHolder.fav_image.setImageResource(R.drawable.ic_baseline_favorite_24);
-                   public void onClick(View view, int position, boolean isLongClick) {
-                       //Start Activity
-                       Intent foodDetail = new Intent(FoodList.this, FoodDetail.class);
-                       foodDetail.putExtra("FoodId", adapter.getRef(position).getKey()); // Send Food Id to new activity
-                       startActivity(foodDetail);
-                   }
-               });
-           }
-       };
 
-       //Set Adapter
+                //Click to change state of Favorites
+                viewHolder.fav_image.setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        if(!localDB.isFavorite(adapter.getRef(position).getKey())){
+                            localDB.addToFavorites(adapter.getRef(position).getKey());
+                            viewHolder.fav_image.setImageResource(R.drawable.ic_baseline_favorite_24);
+                            Toast.makeText(FoodList.this, model.getName() + " đã thêm vào danh sách yêu thích", Toast.LENGTH_SHORT).show();
+                        } else {
+                            localDB.removeFromFavorites(adapter.getRef(position).getKey());
+                            viewHolder.fav_image.setImageResource(R.drawable.ic_baseline_favorite_border_24);
+                            Toast.makeText(FoodList.this, model.getName() + " đã xoá khỏi danh sách yêu thích", Toast.LENGTH_SHORT).show();
+                        }
+                    }
+                });
+
+                viewHolder.setItemClickListener(new ItemClickListener() {
+                    @Override
+                    public void onClick(View view, int position, boolean isLongClick) {
+                        //Start Activity
+                        Intent foodDetail = new Intent(FoodList.this, FoodDetail.class);
+                        foodDetail.putExtra("FoodId", adapter.getRef(position).getKey()); // Send Food Id to new activity
+                        startActivity(foodDetail);
+                    }
+                });
+            }
+        };
+
+        //Set Adapter
         recyclerView.setAdapter(adapter);
     }
 

Foodify/app/src/main/java/com/waterbase/foodify/ViewHolder/FoodViewHolder.java

@@ -13,7 +13,7 @@ import com.waterbase.foodify.R;
 public class FoodViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
 
     public TextView food_name;
-    public ImageView food_image;
+    public ImageView food_image, fav_image;
 
     private ItemClickListener itemClickListener;
 
@@ -26,6 +26,7 @@ public class FoodViewHolder extends RecyclerView.ViewHolder implements View.OnCl
 
         food_name = (TextView) itemView.findViewById(R.id.food_name);
         food_image = (ImageView) itemView.findViewById(R.id.food_image);
+        fav_image = (ImageView) itemView.findViewById(R.id.fav);
 
         itemView.setOnClickListener(this);
     }

Foodify/app/src/main/res/drawable/ic_baseline_favorite_24.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M12,21.35l-1.45,-1.32C5.4,15.36 2,12.28 2,8.5 2,5.42 4.42,3 7.5,3c1.74,0 3.41,0.81 4.5,2.09C13.09,3.81 14.76,3 16.5,3 19.58,3 22,5.42 22,8.5c0,3.78 -3.4,6.86 -8.55,11.54L12,21.35z"/>
+</vector>

Foodify/app/src/main/res/drawable/ic_baseline_favorite_border_24.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M16.5,3c-1.74,0 -3.41,0.81 -4.5,2.09C10.91,3.81 9.24,3 7.5,3 4.42,3 2,5.42 2,8.5c0,3.78 3.4,6.86 8.55,11.54L12,21.35l1.45,-1.32C18.6,15.36 22,12.28 22,8.5 22,5.42 19.58,3 16.5,3zM12.1,18.55l-0.1,0.1 -0.1,-0.1C7.14,14.24 4,11.39 4,8.5 4,6.5 5.5,5 7.5,5c1.54,0 3.04,0.99 3.57,2.36h1.87C13.46,5.99 14.96,5 16.5,5c2,0 3.5,1.5 3.5,3.5 0,2.89 -3.14,5.74 -7.9,10.05z"/>
+</vector>

Foodify/app/src/main/res/layout/food_item.xml

@@ -18,16 +18,36 @@
             android:layout_height="match_parent"
             android:scaleType="centerCrop" />
 
-        <TextView
+
-            android:id="@+id/food_name"
+        <LinearLayout
+            android:weightSum="10"
+            android:orientation="horizontal"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_alignParentBottom="true"
             android:background="#4f0e0d0e"
-            android:gravity="center"
+            >
-            android:text="Name of Food"
+
-            android:textColor="@color/white"
+            <TextView
-            android:textSize="20sp" />
+                android:id="@+id/food_name"
+                android:layout_width="0dp"
+                android:layout_weight="9"
+                android:layout_height="wrap_content"
+                android:background="#4f0e0d0e"
+                android:gravity="center"
+                android:text="Name of Food"
+                android:textColor="@color/white"
+                android:textSize="20sp" />
+
+            <ImageView
+                android:id="@+id/fav"
+                android:src="@drawable/ic_baseline_favorite_border_24"
+                android:layout_weight="1"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                />
+
+        </LinearLayout>
     </RelativeLayout>
 
 </androidx.cardview.widget.CardView>