Added first version of app

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 29
+
+    defaultConfig {
+        applicationId "by.wotcalculator.application"
+        minSdkVersion 21
+        targetSdkVersion 29
+        versionCode 1
+        versionName "1.0"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+
+    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.lifecycle:lifecycle-livedata:2.2.0'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel:2.2.0'
+    //implementation 'com.google.dagger:dagger:2.27'
+    //implementation 'com.google.dagger:dagger-android-support:2.27'
+    implementation 'com.squareup.retrofit2:retrofit:2.7.2'
+    implementation 'com.squareup.retrofit2:converter-gson:2.4.0'
+    annotationProcessor 'androidx.lifecycle:lifecycle-common-java8:2.2.0'
+    //annotationProcessor 'com.google.dagger:dagger-compiler:2.27'
+    //annotationProcessor 'com.google.dagger:dagger-android-processor:2.27'
+}
+repositories {
+    mavenCentral()
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="by.wotcalculator.application">
+
+    <uses-permission android:name="android.permission.INTERNET"/>
+
+    <application
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".ui.activities.MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/by/wotcalculator/application/data/repositories/TankopediaRepository.java

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+package by.wotcalculator.application.data.repositories;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.MutableLiveData;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+import by.wotcalculator.application.domain.models.api.ResponseBody;
+import by.wotcalculator.application.domain.models.api.Tank;
+import by.wotcalculator.application.retrofit.RetrofitService;
+import by.wotcalculator.application.retrofit.TankopediaAPI;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+
+public class TankopediaRepository {
+
+    // TODO : Inject with Dagger
+    private final TankopediaAPI tankopediaAPI;
+
+    private final MutableLiveData<ArrayList<Tank>> tanksList = new MutableLiveData<>();
+
+    public TankopediaRepository() {
+        tankopediaAPI = RetrofitService.getTankopediaApi();
+    }
+
+    public MutableLiveData<ArrayList<Tank>> getTanksList() {
+        Call<ResponseBody> request = tankopediaAPI.getAllTanks();
+        request.enqueue(new Callback<ResponseBody>() {
+
+            @Override
+            public void onResponse(
+                    @NonNull Call<ResponseBody> call,
+                    @NonNull Response<ResponseBody> response
+            ) {
+                if (response.isSuccessful()) {
+                    ResponseBody responseBody = response.body();
+                    if (responseBody != null) {
+                        HashMap<Integer, Tank> tanksHashMap = responseBody.getData();
+                        ArrayList<Tank> tanks = new ArrayList<>(tanksHashMap.values());
+                        tanksList.postValue(tanks);
+                    }
+                }
+            }
+
+            @Override
+            public void onFailure(Call<ResponseBody> call, Throwable t) {
+                tanksList.postValue(null);
+            }
+        });
+
+        return this.tanksList;
+    }
+}

app/src/main/java/by/wotcalculator/application/data/viewmodels/TanksViewModel.java

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+package by.wotcalculator.application.data.viewmodels;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+import java.util.ArrayList;
+
+import by.wotcalculator.application.data.repositories.TankopediaRepository;
+import by.wotcalculator.application.domain.models.api.Tank;
+
+public class TanksViewModel extends ViewModel {
+
+    // TODO : Inject with Dagger
+    private TankopediaRepository tankopediaRepository;
+
+    private MutableLiveData<ArrayList<Tank>> tanksList;
+
+    public TanksViewModel() {
+        tankopediaRepository = new TankopediaRepository();
+        tanksList = tankopediaRepository.getTanksList();
+    }
+
+    public LiveData<ArrayList<Tank>> getLiveData() {
+        return tanksList;
+    }
+}

app/src/main/java/by/wotcalculator/application/domain/models/Tank.java

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+package by.wotcalculator.application.domain.models.api;
+
+import com.google.gson.annotations.SerializedName;
+
+public class Tank {
+
+    @SerializedName("name")
+    private String name;
+
+    @SerializedName("description")
+    private String description;
+
+    public String getName() {
+        return this.name;
+    }
+
+    public String getDescription() {
+        return this.description;
+    }
+}

app/src/main/java/by/wotcalculator/application/domain/models/api/Meta.java

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+package by.wotcalculator.application.domain.models.api;
+
+import com.google.gson.annotations.SerializedName;
+
+public class Meta {
+
+    @SerializedName("count")
+    private int count;
+
+    @SerializedName("page_total")
+    private int totalPages;
+
+    @SerializedName("total")
+    private int total;
+
+    @SerializedName("limit")
+    private int limit;
+
+    @SerializedName("page")
+    private int page;
+
+    public int getCount() {
+        return this.count;
+    }
+
+    public int getTotalPages() {
+        return this.totalPages;
+    }
+
+    public int getTotal() {
+        return this.total;
+    }
+
+    public int getLimit() {
+        return this.limit;
+    }
+
+    public int getPage() {
+        return this.page;
+    }
+}

app/src/main/java/by/wotcalculator/application/domain/models/api/ResponseBody.java

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+package by.wotcalculator.application.domain.models.api;
+
+import com.google.gson.annotations.SerializedName;
+
+import java.util.HashMap;
+
+public class ResponseBody {
+
+    @SerializedName("status")
+    private String status;
+
+    @SerializedName("meta")
+    private Meta meta;
+
+    @SerializedName("data")
+    private HashMap<Integer, Tank> data;
+
+    public String getStatus() {
+        return this.status;
+    }
+
+    public Meta getMeta() {
+        return this.meta;
+    }
+
+    public HashMap<Integer, Tank> getData() {
+        return this.data;
+    }
+}

app/src/main/java/by/wotcalculator/application/retrofit/RetrofitService.java

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+package by.wotcalculator.application.retrofit;
+
+import java.io.IOException;
+
+import okhttp3.HttpUrl;
+import okhttp3.Interceptor;
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import retrofit2.Retrofit;
+import retrofit2.converter.gson.GsonConverterFactory;
+
+public class RetrofitService {
+
+    private static final String BASE_URL = "http://api.worldoftanks.ru/wot/";
+
+    private static final String API_APP_ID = "0b0439f85486bd0f964f5af92eb7b3af";
+
+    public static TankopediaAPI getTankopediaApi() {
+        return getInstance().create(TankopediaAPI.class);
+    }
+
+    private static Retrofit getInstance() {
+        OkHttpClient httpClient = new OkHttpClient.Builder()
+                .addInterceptor(new ImplementAppIdInterceptor())
+                .build();
+        return new Retrofit.Builder()
+                .client(httpClient)
+                .baseUrl(BASE_URL)
+                .addConverterFactory(GsonConverterFactory.create())
+                .build();
+    }
+
+    private static class ImplementAppIdInterceptor implements Interceptor {
+
+        @Override
+        public Response intercept(Chain chain) throws IOException {
+            Request original = chain.request();
+            HttpUrl originalHttpUrl = original.url();
+            HttpUrl url = originalHttpUrl
+                    .newBuilder()
+                    .addQueryParameter("application_id", API_APP_ID)
+                    .build();
+            Request.Builder requestBuilder = original
+                    .newBuilder()
+                    .url(url);
+            Request request = requestBuilder.build();
+            return chain.proceed(request);
+        }
+    }
+}

app/src/main/java/by/wotcalculator/application/retrofit/TankopediaAPI.java

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+package by.wotcalculator.application.retrofit;
+
+import by.wotcalculator.application.domain.models.api.ResponseBody;
+import retrofit2.Call;
+import retrofit2.http.GET;
+
+public interface TankopediaAPI {
+    @GET("encyclopedia/vehicles/?page_no=1&limit=10&fields=name,description")
+    Call<ResponseBody> getAllTanks();
+}

app/src/main/java/by/wotcalculator/application/ui/activities/MainActivity.java

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+package by.wotcalculator.application.ui.activities;
+
+import android.os.Bundle;
+import android.widget.ListView;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.lifecycle.ViewModelProvider;
+
+import by.wotcalculator.application.R;
+import by.wotcalculator.application.data.viewmodels.TanksViewModel;
+import by.wotcalculator.application.ui.adapters.TanksListAdapter;
+
+public class MainActivity extends AppCompatActivity {
+
+    protected ListView tanksListView;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        tanksListView = findViewById(R.id.tanks_list);
+
+        TanksViewModel tanksViewModel = new ViewModelProvider(this).get(TanksViewModel.class);
+        tanksViewModel.getLiveData().observe(this, tanks -> {
+            if (tanks != null) {
+                TanksListAdapter adapter = new TanksListAdapter(this, R.layout.tanks_list_item, tanks);
+                tanksListView.setAdapter(adapter);
+            }
+        });
+    }
+}