Exam/1f8c84b8b5f7565f11127bcaa95ca95e.txt

Подключение retrofit
implementation 'com.squareup.retrofit2:retrofit:2.9.0'
implementation 'com.squareup.retrofit2:converter-gson:2.5.0'

table model
прописать поля
сделать 2 конструктора
сделать конструктор для parcel (source.readInt())
сделать геттеры и сеттеры
сделать describeContents, writeToParcel(dest.writeInt(ID))
прописать creator: public static final Parceable.Creator<tableGamesModel> CREATOR = Parceable.Creator<tableGamesModel>(){}
там переопределить 2 метода createFromParcel (возвращает return new tableGamesModel(source)) и newArray(вместо 0 поставить size)

adapter
private context mContext;
List<tableModel> tableList;

Проставить поля генерейт

public View getView(int position, View convertView, ViewGroup parent) {
        View v = View.inflate(mContext, R.layout.item_layout, null);
        TextView title = v.findViewById(R.id.titleTV);
        TextView cost = v.findViewById(R.id.costTV);
        TextView stock = v.findViewById(R.id.stockTV);
        TextView store = v.findViewById(R.id.storeTV);
        tableGamesModel games = gamesList.get(position);
        title.setText(games.getTitle());
        cost.setText(String.valueOf(games.getCost()));
        stock.setText(String.valueOf(games.getStockAvailability()));
        store.setText(String.valueOf(games.getAvailabilityInStore()));
        return v;
    }

retrofit
создаем интерфейс, делаем импорты
import retrofit2.Call;
import retrofit2.http.Body;
import retrofit2.http.DELETE;
import retrofit2.http.GET;
import retrofit2.http.POST;
import retrofit2.http.PUT;
import retrofit2.http.Path;
import retrofit2.http.Query;
Пример написания методов:
	@GET("apps/{id}")
    Call<DataModal> getData(@Query("id") int id);

    @POST("items")
    Call<DataModal> createPost(@Body DataModal dataModal);

    @PUT("apps/{id}")
    Call<DataModal> updateData(@Path("id") int id, @Body DataModal dataModal);

    @DELETE("apps/{id}")
    Call<Void> deleteData(@Path("id") int id);

для вывода в листвью

	private adapterView adapter;
    	private List<tableGamesModel> gamesList = new ArrayList<>();

 	ListView lvApps = findViewById(R.id.gamesLV);
        adapter = new adapterView(main_Activity.this, gamesList);
        lvApps.setAdapter(adapter);

	private class fillList extends AsyncTask<Void, Void, String>
{
    @Override
    protected String doInBackground(Void... voids)
    {
        try {
            URL url =new URL("https://ngknn.ru:5001/NGKNN/МамшеваЮС/Экзамен/api/TableGames/sortByTableGames?typeOfSort={typeOfSort}&nameProduct={nameProduct}");
            HttpURLConnection connection =(HttpURLConnection)url.openConnection();

            BufferedReader reader =new BufferedReader(new InputStreamReader(connection.getInputStream()));

            StringBuffer result = new StringBuffer();
            String line = "";

            while((line = reader.readLine()) != null)
            {
                result.append(line);
            }
            return result.toString();
        }
        catch (Exception e) {
            return null;
        }
    }

    @Override
    protected void onPostExecute(String s)
    {
        super.onPostExecute(s);
        try {
            gamesList.clear();
            JSONArray temp =new JSONArray();
            for (int i=0;i <temp.length();i++)
            {
                JSONObject gameJS = temp.getJSONObject(i);
                tableGamesModel tempArr = new tableGamesModel(
                        gameJS.getInt("ID"),
                        gameJS.getString("Title"),
                        gameJS.getInt("Cost"),
                        gameJS.getInt("StockAvailability"),
                        gameJS.getInt("AvailabilityInStore"),
                        gameJS.getString("Description"),
                        gameJS.getString("Reviews"),
                        gameJS.getString("Image")
                );
                gamesList.add(tempArr);
                adapter.notifyDataSetInvalidated();
            }
        }
        catch (Exception e){

        }
    }
}


private Bitmap getUserImage(String encodedImg)
    {

        if(encodedImg!=null&& !encodedImg.equals("null")) {
            byte[] bytes = Base64.decode(encodedImg, Base64.DEFAULT);
            return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
        }
        else
        {
            return null;
        }
    }

Retrofit retrofit = new Retrofit.Builder()
                .baseUrl("https://ngknn.ru:5001/NGKNN/МорозовАВ/api/")
                .addConverterFactory(GsonConverterFactory.create())
                .build();

        RetrofitAPI retrofitAPI = retrofit.create(RetrofitAPI.class);
        Call<DataModal> call = retrofitAPI.getData(MainActivity.index);
        call.enqueue(new Callback<DataModal>() {
            @Override
            public void onResponse(Call<DataModal> call, Response<DataModal> response) {
                id = response.body().getApp_id();
                appName.setText(response.body().getAppName());
                appAgeLimit.setText(Integer.valueOf(response.body().getAppAgeLimit()).toString());
                appPrice.setText(Double.valueOf(response.body().getAppPrice()).toString());
                encodedImage = response.body().getAppImage();
                if(response.body().getAppImage() == null)
                {
                    image.setImageResource(R.drawable.empty);
                }
                else
                {
                    image.setImageBitmap(getImgBitmap(response.body().getAppImage()));
                }
            }

            @Override
            public void onFailure(Call<DataModal> call, Throwable t) {

            }
        });


image = findViewById(R.id.appImageIV);
        image.setOnClickListener(v -> {
            Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
            pickImg.launch(intent);        });

private final ActivityResultLauncher<Intent> pickImg = registerForActivityResult(new ActivityResultContracts.StartActivityForResult(), result -> {
        if (result.getResultCode() == RESULT_OK) {
            if (result.getData() != null) {
                Uri uri = result.getData().getData();
                try {
                    InputStream is = getContentResolver().openInputStream(uri);
                    Bitmap bitmap = BitmapFactory.decodeStream(is);
                    image.setImageBitmap(bitmap);
                    encodedImage = encodeImage(bitmap);
                } catch (Exception e) {

                }
            }
        }
    });

    private String encodeImage(Bitmap bitmap) {
        int prevW = 150;
        int prevH = bitmap.getHeight() * prevW / bitmap.getWidth();
        Bitmap b = Bitmap.createScaledBitmap(bitmap, prevW, prevH, false);
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        b.compress(Bitmap.CompressFormat.JPEG, 50, byteArrayOutputStream);
        byte[] bytes = byteArrayOutputStream.toByteArray();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            return Base64.getEncoder().encodeToString(bytes);
        }
        return "";
    }

    private Bitmap getImgBitmap(String encodedImg) {
        if (encodedImg != null) {
            byte[] bytes = new byte[0];
            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
                bytes = Base64.getDecoder().decode(encodedImg);
            }
            return BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
        }
        return BitmapFactory.decodeResource(editApp.this.getResources(),
                R.drawable.empty);
    }




private void deleteRecord(int index)
    {
        saveChangesBtn.setEnabled(false);
        deleteBtn.setEnabled(false);
        deletePhoto.setEnabled(false);

        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl("https://ngknn.ru:5001/NGKNN/МорозовАВ/api/")
                .addConverterFactory(GsonConverterFactory.create())
                .build();
        RetrofitAPI retrofitAPI = retrofit.create(RetrofitAPI.class);
        Call call = retrofitAPI.deleteData(index);
        call.enqueue(new Callback<DataModal>() {
            @Override
            public void onResponse(Call<DataModal> call, Response<DataModal> response) {
                if(!response.isSuccessful())
                {
                    Toast.makeText(editApp.this, "При удание записи возникла ошибка", Toast.LENGTH_SHORT).show();
                    return;
                }
                saveChangesBtn.setEnabled(false);
                deleteBtn.setEnabled(false);
                deletePhoto.setEnabled(false);

                Toast.makeText(editApp.this, "Удаление прошло успешно", Toast.LENGTH_SHORT).show();
                startActivity(new Intent(editApp.this, MainActivity.class));
                finish();
            }
            @Override
            public void onFailure(Call<DataModal> call, Throwable t) {

            }
        });
    }


private void putChanges(int id, String appName, double appPrice, int appAgeLimit, String picture) {

        saveChangesBtn.setEnabled(false);
        deleteBtn.setEnabled(false);
        deletePhoto.setEnabled(false);

        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl("https://ngknn.ru:5001/ngknn/морозовав/api/")
                .addConverterFactory(GsonConverterFactory.create())
                .build();
        RetrofitAPI retrofitAPI = retrofit.create(RetrofitAPI.class);
        DataModal modal = new DataModal(id, appName, appPrice, appAgeLimit, picture);
        Call<DataModal> call = retrofitAPI.updateData(MainActivity.index, modal);
        call.enqueue(new Callback<DataModal>() {
            @Override
            public void onResponse(Call<DataModal> call, Response<DataModal> response) {
                if(response.isSuccessful())
                {
                    saveChangesBtn.setEnabled(true);
                    deleteBtn.setEnabled(true);
                    deletePhoto.setEnabled(true);

                    Toast.makeText(editApp.this, "Изменение прошло успешно", Toast.LENGTH_SHORT).show();
                    startActivity(new Intent(editApp.this, MainActivity.class));
                    finish();
                    return;
                }
                Toast.makeText(editApp.this, "Произошла ошибка", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onFailure(Call<DataModal> call, Throwable t) {
            }
        });
    }