8 лаба

src/app/src/main/java/com/example/myapplication/DAO/CityDao.java

@@ -21,7 +21,7 @@ public interface CityDao {
     List<City> getAllCity();
 
     @Query("SELECT * FROM city_table WHERE id = :cityId")
-    City getCityById(int cityId);
+    City getCityById(long cityId);
 
     @Query("SELECT COUNT(*) FROM city_table")
     int countCity();

src/app/src/main/java/com/example/myapplication/DAO/FavoriteCityDao.java

@@ -24,4 +24,7 @@ public interface FavoriteCityDao {
 
     @Query("SELECT * FROM favorite_cities_table WHERE owner_id = :userId AND city_id = :cityId")
     int isFavorite(long userId, long cityId);
+
+    @Query("DELETE FROM favorite_cities_table WHERE owner_id = :userId AND city_id = :cityId")
+    void removeFavorite(long userId, long cityId);
 }

src/app/src/main/java/com/example/myapplication/MainActivity2.java

@@ -18,12 +18,16 @@ import androidx.appcompat.app.AppCompatActivity;
 
 import com.example.myapplication.databinding.ActivityMain2Binding;
 
+import java.util.ArrayList;
+
 public class MainActivity2 extends AppCompatActivity {
 
     private AppBarConfiguration mAppBarConfiguration;
     private ActivityMain2Binding binding;
     private WeatherData CurrentCity = new WeatherData("Город ещё не выбран","", "", "", "");
 
+    public static ArrayList<WeatherData> weatherDataList = new ArrayList<>();
+
     private String userName = "";
 
     public String getUserName() {

src/app/src/main/java/com/example/myapplication/ui/home/HomeFragment.java

@@ -4,6 +4,7 @@ import android.app.AlertDialog;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.LayoutInflater;
+import android.view.Menu;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Toast;
@@ -11,6 +12,9 @@ import android.widget.Toast;
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
+import androidx.navigation.NavController;
+import androidx.navigation.Navigation;
+import androidx.navigation.ui.NavigationUI;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
@@ -27,6 +31,7 @@ import com.example.myapplication.R;
 import com.example.myapplication.RecyclerItemClickListener;
 import com.example.myapplication.DTO.WeatherData;
 import com.example.myapplication.databinding.FragmentHomeBinding;
+import com.google.android.material.navigation.NavigationView;
 import com.google.gson.JsonArray;
 
 import java.util.ArrayList;
@@ -44,9 +49,7 @@ public class HomeFragment extends Fragment   {
 
     private FragmentHomeBinding binding;
     private WeatherService service;
-    private ArrayList<WeatherData> weatherDataList = new ArrayList<>();
     private List<City> cityList = new ArrayList<City>();
-
     private RecyclerView recyclerView;
 
     public View onCreateView(@NonNull LayoutInflater inflater,
@@ -60,15 +63,15 @@ public class HomeFragment extends Fragment   {
         recyclerView = root.findViewById(R.id.suslik);
         recyclerView.addOnItemTouchListener(new RecyclerItemClickListener(root.getContext(), recyclerView ,new RecyclerItemClickListener.OnItemClickListener() {
             @Override public void onItemClick(View view, int position) {
-                Log.e("HomeFragment", "onClick: " + weatherDataList.get(position).City);
                 if (getActivity() instanceof MainActivity2) {
-                    ((MainActivity2) getActivity()).setCurrentCity(weatherDataList.get(position));
+                    Log.e("HomeFragment", "onClick: " + MainActivity2.weatherDataList.get(position).City);
+                    ((MainActivity2) getActivity()).setCurrentCity(MainActivity2.weatherDataList.get(position));
                 }
             }
 
             @Override
             public void onLongItemClick(View view, int position) {
-                String selectedCity = weatherDataList.get(position).City;
+                String selectedCity = MainActivity2.weatherDataList.get(position).City;
                 showDialog(selectedCity);
             }
         }));
@@ -143,7 +146,6 @@ public class HomeFragment extends Fragment   {
         binding = null;
     }
 
-
     @Override
     public void onResume() {
         super.onResume();
@@ -153,9 +155,9 @@ public class HomeFragment extends Fragment   {
                 if (response.isSuccessful()) {
                     JsonArray weatherData = response.body();
                     Log.d("HomeFragment", "Weather data: " + weatherData);
-                    weatherDataList = new ArrayList<>(weatherData.size());
+                    MainActivity2.weatherDataList = new ArrayList<>(weatherData.size());
                     for (int i = 0; i < weatherData.size(); i++) {
-                        weatherDataList.add(new WeatherData(
+                        MainActivity2.weatherDataList.add(new WeatherData(
                                 weatherData.get(i).getAsJsonObject().get("City").getAsString(),
                                 weatherData.get(i).getAsJsonObject().get("Temperature").getAsString(),
                                 weatherData.get(i).getAsJsonObject().get("WeatherCondition").getAsString(),
@@ -163,7 +165,7 @@ public class HomeFragment extends Fragment   {
                                 weatherData.get(i).getAsJsonObject().get("Wind").getAsString()
                         ));
 
-                        weatherDataList.sort((o1, o2) -> o1.City.compareTo(o2.City));
+                        MainActivity2.weatherDataList.sort((o1, o2) -> o1.City.compareTo(o2.City));
 
 //                        JsonObject item = weatherData.get(i).getAsJsonObject();
 //                        Log.i("HomeFragment", "City: " + item.get("City").getAsString());
@@ -178,7 +180,7 @@ public class HomeFragment extends Fragment   {
                     CityDao cityDao = db.cityDao();
                     Executors.newSingleThreadExecutor().execute(() -> {
                         if (cityDao.countCity() == 0) {
-                            for (WeatherData wd : weatherDataList) {
+                            for (WeatherData wd : MainActivity2.weatherDataList) {
                                 Log.i("HomeFragment", "Inserting city: " + wd.City);
                                 cityDao.insert(new City(wd.City));
                             }

src/app/src/main/java/com/example/myapplication/ui/slideshow/SlideshowFragment.java

@@ -1,37 +1,148 @@
 package com.example.myapplication.ui.slideshow;
 
+import android.app.AlertDialog;
 import android.os.Bundle;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 
+import com.example.myapplication.AppDatabase;
+import com.example.myapplication.CustomAdapter;
+import com.example.myapplication.DAO.CityDao;
+import com.example.myapplication.DAO.FavoriteCityDao;
+import com.example.myapplication.DAO.UserDao;
+import com.example.myapplication.DTO.City;
+import com.example.myapplication.DTO.FavoriteCity;
+import com.example.myapplication.DTO.User;
+import com.example.myapplication.MainActivity2;
+import com.example.myapplication.R;
+import com.example.myapplication.RecyclerItemClickListener;
 import com.example.myapplication.databinding.FragmentSlideshowBinding;
 
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.Executors;
+
 public class SlideshowFragment extends Fragment {
 
     private FragmentSlideshowBinding binding;
+    private RecyclerView recyclerView;
+    private List<City> cityList = new ArrayList<City>();
+
+    private AppDatabase db;
 
     public View onCreateView(@NonNull LayoutInflater inflater,
                              ViewGroup container, Bundle savedInstanceState) {
-        SlideshowViewModel slideshowViewModel =
-                new ViewModelProvider(this).get(SlideshowViewModel.class);
 
         binding = FragmentSlideshowBinding.inflate(inflater, container, false);
         View root = binding.getRoot();
 
-        final TextView textView = binding.textSlideshow;
+        db = AppDatabase.getDatabase(getContext());
-        slideshowViewModel.getText().observe(getViewLifecycleOwner(), textView::setText);
+
+        recyclerView = root.findViewById(R.id.fav_cyclik);
+        recyclerView.addOnItemTouchListener(new RecyclerItemClickListener(root.getContext(), recyclerView, new RecyclerItemClickListener.OnItemClickListener() {
+            @Override
+            public void onItemClick(View view, int position) {
+                Log.e("SlideshowFragment", "onClick: " + cityList.get(position).CityName);
+                if (getActivity() instanceof MainActivity2) {
+                    ((MainActivity2) getActivity()).setCurrentCity(MainActivity2.weatherDataList.get(position));
+                }
+            }
+
+            @Override
+            public void onLongItemClick(View view, int position) {
+                String selectedCity = cityList.get(position).CityName;
+                showDialog(selectedCity);
+            }
+        }));
+
+        recyclerView.setLayoutManager(new LinearLayoutManager(root.getContext()));
+        CustomAdapter adapter = new CustomAdapter(cityList);
+        recyclerView.setAdapter(adapter);
+
         return root;
     }
 
+    private void showDialog(String city) {
+        new AlertDialog.Builder(getContext())
+                .setTitle("Выбор города")
+                .setMessage("Удалить " + city + " из избранного?")
+                .setPositiveButton("Удалить", (dialog, which) -> {
+                    if (getActivity() instanceof MainActivity2) {
+                        String username = ((MainActivity2) getActivity()).getUserName();
+
+                        Executors.newSingleThreadExecutor().execute(() -> {
+                            CityDao cityDao = db.cityDao();
+                            UserDao userDao = db.userDao();
+                            FavoriteCityDao favoriteCityDao = db.favoriteCityDao();
+                            City cityObj = cityDao.getCityByName(city);
+                            User userObj = userDao.getUserByName(username);
+
+                            // check if city is already in favorites
+                            if (userObj != null && cityObj != null) {
+                                if (favoriteCityDao.isFavorite(userObj.getId(), cityObj.getId()) > 0) {
+                                    favoriteCityDao.removeFavorite(userObj.getId(), cityObj.getId());
+                                    getActivity().runOnUiThread(() -> {
+                                        Toast.makeText(getContext(), city + " удалён из избранного", Toast.LENGTH_SHORT).show();
+                                        updateData();
+                                    });
+                                }
+                            } else {
+                                Log.e("HomeFragment", "User or city not found");
+                            }
+                        });
+
+                    } else {
+                        Log.e("SlideshowFragment", "Ошибка получения контекста");
+                    }
+                })
+                .setNegativeButton("Отмена", null)
+                .show();
+    }
+
     @Override
     public void onDestroyView() {
         super.onDestroyView();
         binding = null;
     }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        updateData();
+    }
+
+    private void updateData() {
+        Executors.newSingleThreadExecutor().execute(() -> {
+            if (getActivity() instanceof MainActivity2) {
+                String username = ((MainActivity2) getActivity()).getUserName();
+
+                CityDao cityDao = db.cityDao();
+                UserDao userDao = db.userDao();
+                FavoriteCityDao favoriteCityDao = db.favoriteCityDao();
+
+                User userObj = userDao.getUserByName(username);
+
+                List<FavoriteCity> favCity = favoriteCityDao.getFavoriteCityByOwnerId(userObj.getId());
+                cityList.clear();
+
+                for (FavoriteCity favoriteCity : favCity) {
+                    City city = cityDao.getCityById(favoriteCity.getCityId());
+                    cityList.add(city);
+                }
+                getActivity().runOnUiThread(() -> {
+                    recyclerView.getAdapter().notifyDataSetChanged();
+                });
+            }
+        });
+    }
 }

src/app/src/main/res/layout/fragment_slideshow.xml

@@ -4,19 +4,12 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".ui.slideshow.SlideshowFragment">
+    tools:context=".ui.home.HomeFragment">
 
-    <TextView
+    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/text_slideshow"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="match_parent"
-        android:layout_marginStart="8dp"
+        android:id="@+id/fav_cyclik">
-        android:layout_marginTop="8dp"
+
-        android:layout_marginEnd="8dp"
+    </androidx.recyclerview.widget.RecyclerView>
-        android:textAlignment="center"
-        android:textSize="20sp"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
 </androidx.constraintlayout.widget.ConstraintLayout>