Lab4

README.md

@@ -1 +1,35 @@
-# AndroidOracle
+# AndroidRemoteOpenDataServers
+
+## Preview
+1. This project uses jdk 8;
+2. This project uses MVVM architecture.
+3. This project executes network request. 
+Use for this network clients OkHttp and Retrofit.
+4. This project works with SQLite db using the Room library.
+
+## Features
+☑️ The application performs network requests to a remote 
+service on receiving data in GSON format using OkHttp clients
+and/or Retrofit.
+
+☑️ The received data is cached in the local database, on
+case of loss of network connection. If the service or network
+are not available, then the data is displayed in the interface of the application
+local database. When requesting data, a check is performed
+to match the data in the local database. If the data is from a remote
+service have changed, then the data in the local database is updated.
+
+☑️ The application consists of two screens. The first screen shows the data in a list. 
+When you click on any item in the list, it starts
+another screen with detailed information when the item is selected.
+
+## Launch guide
+To run this project you will need to install this project in phone with Android Operating System.
+
+## Program testing
+<i><b>Main Activity</b></i><br>
+![Main Activity](app/src/main/res/img/img_AT_holidays.jpg)
+![Main Activity](app/src/main/res/img/img_AL_holidays.jpg)
+<br><i><b>Details Activity</b></i><br>
+For example, for country AT holidays<br>
+![Main Activity](app/src/main/res/img/img_AT_holiday_NYD.jpg)

app/build.gradle

@@ -7,7 +7,7 @@ android {
     buildToolsVersion "30.0.2"
 
     defaultConfig {
-        applicationId "ua.gura.com.example.andriodoracle"
+        applicationId "ua.gura.com.example.androidoracle"
         minSdkVersion 19
         targetSdkVersion 30
         versionCode 1
@@ -29,11 +29,34 @@ android {
 }
 
 dependencies {
-
-    implementation 'androidx.appcompat:appcompat:1.5.1'
-    implementation 'com.google.android.material:material:1.6.1'
-    implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'androidx.appcompat:appcompat:1.2.0'
+    implementation 'com.google.android.material:material:1.2.1'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.2'
     testImplementation 'junit:junit:4.+'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
+
+    implementation 'androidx.lifecycle:lifecycle-viewmodel:2.2.0'
+    implementation 'androidx.lifecycle:lifecycle-livedata:2.2.0'
+    implementation 'androidx.lifecycle:lifecycle-viewmodel-savedstate:2.2.0'
+    annotationProcessor "androidx.lifecycle:lifecycle-compiler:2.2.0"
+
+    implementation 'androidx.room:room-runtime:2.2.5'
+    annotationProcessor 'androidx.room:room-compiler:2.2.5'
+
+    implementation 'com.squareup.okhttp3:okhttp:3.9.0'
+    implementation 'com.squareup.okhttp3:logging-interceptor:3.9.0'
+
+    implementation 'com.squareup.retrofit2:retrofit:2.8.1'
+    implementation 'com.squareup.retrofit2:converter-gson:2.8.1'
+
+    implementation 'com.google.code.gson:gson:2.8.6'
+
+    implementation 'com.annimon:stream:1.2.1'
+
+    implementation 'androidx.recyclerview:recyclerview:1.1.0'
+
+
+
+
 }

app/src/androidTest/java/ua/gura/com/example/andriodoracle/ExampleInstrumentedTest.java → app/src/androidTest/java/ua/gura/com/example/androidoracle/ExampleInstrumentedTest.java

@@ -1,4 +1,4 @@
-package ua.gura.com.example.andriodoracle;
+package ua.gura.com.example.androidoracle;
 
 import android.content.Context;
 
@@ -21,6 +21,6 @@ public class ExampleInstrumentedTest {
     public void useAppContext() {
         // Context of the app under test.
         Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
-        assertEquals("ua.gura.com.example.andriodoracle", appContext.getPackageName());
+        assertEquals("ua.gura.com.example.androidoracle", appContext.getPackageName());
     }
 }

app/src/main/AndroidManifest.xml

@@ -1,21 +1,30 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="ua.gura.com.example.andriodoracle">
+    package="ua.gura.com.example.androidoracle">
+    <uses-permission android:name="android.permission.INTERNET"/>
 
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/Theme.AndriodOracle">
-        <activity android:name=".MainActivity">
+        android:theme="@style/Theme.AndroidOracle"
+        android:name=".activities.App">
+
+        <activity android:name=".activities.main.MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".activities.main.BaseActivity"
+            android:label="BaseActivity" />
+        <activity
+            android:name=".activities.details.DetailsActivity"
+            android:label="DetailsActivity" />
     </application>
 
 </manifest>

app/src/main/java/ua/gura/com/example/androidoracle/activities/App.java

@@ -0,0 +1,55 @@
+package ua.gura.com.example.androidoracle.activities;
+
+import android.app.Application;
+
+import androidx.lifecycle.ViewModelProvider;
+import androidx.room.Room;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import okhttp3.OkHttpClient;
+import okhttp3.logging.HttpLoggingInterceptor;
+import retrofit2.Retrofit;
+import retrofit2.converter.gson.GsonConverterFactory;
+import ua.gura.com.example.androidoracle.activities.logger.AndroidLogger;
+import ua.gura.com.example.androidoracle.activities.logger.Logger;
+import ua.gura.com.example.androidoracle.activities.model.DateNagerService;
+import ua.gura.com.example.androidoracle.activities.model.db.AppDB;
+import ua.gura.com.example.androidoracle.activities.model.db.HolidayDAO;
+import ua.gura.com.example.androidoracle.activities.model.db.HolidayDB;
+import ua.gura.com.example.androidoracle.activities.model.network.DateNagerApi;
+
+public class App extends Application {
+
+    private ViewModelProvider.Factory factory;
+    private static final String BASE_URL = "https://date.nager.at/";
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        Logger logger = new AndroidLogger();
+        OkHttpClient httpClient = new OkHttpClient.Builder()
+                .addNetworkInterceptor(new HttpLoggingInterceptor()
+                        .setLevel(HttpLoggingInterceptor.Level.BODY))
+                .build();
+        Retrofit retrofit = new Retrofit.Builder()
+                .baseUrl(BASE_URL)
+                .client(httpClient)
+                .addConverterFactory(GsonConverterFactory.create())
+                .build();
+
+        DateNagerApi dateNagerApi = retrofit.create(DateNagerApi.class);
+        ExecutorService executorService = Executors.newCachedThreadPool();
+
+        AppDB appDB = Room.databaseBuilder(this, AppDB.class, "database.db")
+        .build();
+        HolidayDAO holidayDAO = appDB.getHolidayDAO();
+        DateNagerService dateNagerService = new DateNagerService(dateNagerApi, holidayDAO, executorService, logger);
+        factory = new ViewModelFactory(dateNagerService);
+    }
+
+    public ViewModelProvider.Factory getViewModelFactory() {
+        return factory;
+    }
+}

app/src/main/java/ua/gura/com/example/androidoracle/activities/BaseViewModel.java

@@ -0,0 +1,17 @@
+package ua.gura.com.example.androidoracle.activities;
+
+import androidx.lifecycle.ViewModel;
+
+import ua.gura.com.example.androidoracle.activities.model.DateNagerService;
+
+public class BaseViewModel extends ViewModel {
+    private DateNagerService dateNagerService;
+
+    public BaseViewModel(DateNagerService dateNagerService) {
+        this.dateNagerService = dateNagerService;
+    }
+
+    protected DateNagerService getDateNagerService() {
+        return dateNagerService;
+    }
+}

app/src/main/java/ua/gura/com/example/androidoracle/activities/ViewModelFactory.java

@@ -0,0 +1,35 @@
+package ua.gura.com.example.androidoracle.activities;
+
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.ViewModel;
+import androidx.lifecycle.ViewModelProvider;
+
+import java.lang.reflect.Constructor;
+
+import ua.gura.com.example.androidoracle.activities.model.DateNagerService;
+
+public class ViewModelFactory implements ViewModelProvider.Factory {
+    public static final String TAG = ViewModelFactory.class.getSimpleName();
+    private DateNagerService dateNagerService;
+
+    public ViewModelFactory(DateNagerService dateNagerService) {
+        this.dateNagerService = dateNagerService;
+    }
+
+    @NonNull
+    @Override
+    public <T extends ViewModel> T create(@NonNull Class<T> modelClass) {
+        Constructor<T> constructor = null;
+        try {
+            constructor = modelClass.getConstructor(DateNagerService.class);
+            return constructor.newInstance(dateNagerService);
+        } catch (ReflectiveOperationException e) {
+            Log.e(TAG,"Error",e);
+            RuntimeException exception = new RuntimeException();
+            exception.initCause(e);
+            throw exception;
+        }
+    }
+}

app/src/main/java/ua/gura/com/example/androidoracle/activities/details/DetailsActivity.java

@@ -0,0 +1,54 @@
+package ua.gura.com.example.androidoracle.activities.details;
+
+import android.os.Bundle;
+import android.widget.TextView;
+
+import ua.gura.com.example.androidoracle.R;
+import ua.gura.com.example.androidoracle.activities.App;
+import ua.gura.com.example.androidoracle.activities.main.BaseActivity;
+import ua.gura.com.example.androidoracle.activities.model.Holiday;
+
+import androidx.lifecycle.ViewModelProvider;
+
+public class DetailsActivity extends BaseActivity {
+
+    public static final String EXTRA_HOLIDAY_NAME = "HOLIDAY_NAME";
+    public static final String EXTRA_HOLIDAY_COUNTY_CODE = "HOLIDAY_COUNTY_CODE";
+    public static final String EXTRA_HOLIDAY_DATE = "HOLIDAY_DATE";
+    public static final String EXTRA_HOLIDAY_LAUNCH_YEAR = "HOLIDAY_LAUNCH_YEAR";
+
+    private TextView nameTextView;
+    private TextView dateTextView;
+    private TextView launchYearTextView;
+    private TextView countryCodeTextView;
+
+    private DetailsViewModel detailsViewModel;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_details);
+
+        nameTextView = findViewById(R.id.nameTextView);
+        dateTextView = findViewById(R.id.dateTextView);
+        launchYearTextView = findViewById(R.id.launchYearTextView);
+        countryCodeTextView = findViewById(R.id.countryCodeTextView);
+
+        String holidayName = getIntent().getStringExtra(EXTRA_HOLIDAY_NAME);
+        String holidayCountryCode = getIntent().getStringExtra(EXTRA_HOLIDAY_COUNTY_CODE);
+        String holidayDate = getIntent().getStringExtra(EXTRA_HOLIDAY_DATE);
+        int holidayLaunchYear = getIntent().getExtras().getInt(EXTRA_HOLIDAY_LAUNCH_YEAR);
+
+        if (holidayName.isEmpty() && holidayCountryCode.isEmpty() && holidayDate.isEmpty()) {
+            throw new RuntimeException("There is holiday haven`t name...");
+        }
+        nameTextView.setText(holidayName);
+        dateTextView.setText(holidayDate);
+        countryCodeTextView.setText(holidayCountryCode);
+        launchYearTextView.setText(holidayLaunchYear == 0 ? "Unknown" : String.valueOf(holidayLaunchYear));
+
+        App app = (App) getApplication();
+        ViewModelProvider viewModelProvider = new ViewModelProvider(this, app.getViewModelFactory());
+        detailsViewModel = viewModelProvider.get(DetailsViewModel.class);
+    }
+}

app/src/main/java/ua/gura/com/example/androidoracle/activities/details/DetailsViewModel.java

@@ -0,0 +1,10 @@
+package ua.gura.com.example.androidoracle.activities.details;
+
+import ua.gura.com.example.androidoracle.activities.BaseViewModel;
+import ua.gura.com.example.androidoracle.activities.model.DateNagerService;
+
+public class DetailsViewModel extends BaseViewModel {
+    public DetailsViewModel(DateNagerService dateNagerService) {
+        super(dateNagerService);
+    }
+}

app/src/main/java/ua/gura/com/example/androidoracle/activities/logger/AndroidLogger.java

@@ -0,0 +1,12 @@
+package ua.gura.com.example.androidoracle.activities.logger;
+
+import android.util.Log;
+
+public class AndroidLogger implements Logger{
+    public static final String TAG = AndroidLogger.class.getSimpleName();
+
+    @Override
+    public void e(Throwable e) {
+        Log.e(TAG,"Error", e);
+    }
+}

app/src/main/java/ua/gura/com/example/androidoracle/activities/logger/Logger.java

@@ -0,0 +1,5 @@
+package ua.gura.com.example.androidoracle.activities.logger;
+
+public interface Logger {
+    void e(Throwable e);
+}

app/src/main/java/ua/gura/com/example/androidoracle/activities/main/BaseActivity.java

@@ -0,0 +1,9 @@
+package ua.gura.com.example.androidoracle.activities.main;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+public class BaseActivity extends AppCompatActivity {
+    public void cancel() {
+        finish();
+    }
+}