[Architecture] Implement dagger for homework

app/build.gradle

@@ -1,6 +1,7 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android-extensions'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-kapt'
 apply plugin: 'com.google.gms.google-services'
 apply plugin: 'io.fabric'
 
@@ -91,7 +92,7 @@ tasks.whenTaskAdded { task ->
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
 
-    annotationProcessor "androidx.room:room-compiler:${versions.room}"
+    kapt "androidx.room:room-compiler:${versions.room}"
     debugImplementation "com.amitshekhar.android:debug-db:1.0.5"
 
     implementation "android.arch.navigation:navigation-fragment-ktx:${versions.navigationFragment}"
@@ -164,6 +165,11 @@ dependencies {
     implementation "io.github.wulkanowy:signer-android:0.1.1"
 
     implementation "androidx.work:work-runtime-ktx:${versions.work}"
+
+    api "com.google.dagger:dagger:${versions.dagger}"
+    api "com.google.dagger:dagger-android-support:${versions.dagger}"
+    kapt "com.google.dagger:dagger-compiler:${versions.dagger}"
+    kapt "com.google.dagger:dagger-android-processor:${versions.dagger}"
 }
 repositories {
     mavenCentral()

app/src/main/java/pl/szczodrzynski/edziennik/App.java

@@ -22,6 +22,7 @@ import android.util.Pair;
 
 import androidx.annotation.RequiresApi;
 import androidx.appcompat.app.AppCompatDelegate;
+import androidx.multidex.MultiDex;
 import androidx.work.Configuration;
 
 import com.chuckerteam.chucker.api.ChuckerCollector;
@@ -59,6 +60,8 @@ import javax.net.ssl.TrustManagerFactory;
 import javax.net.ssl.X509TrustManager;
 
 import cat.ereza.customactivityoncrash.config.CaocConfig;
+import dagger.android.AndroidInjector;
+import dagger.android.support.DaggerApplication;
 import im.wangchao.mhttp.MHttp;
 import im.wangchao.mhttp.internal.cookie.PersistentCookieJar;
 import im.wangchao.mhttp.internal.cookie.cache.SetCookieCache;
@@ -77,6 +80,7 @@ import pl.szczodrzynski.edziennik.data.db.modules.debuglog.DebugLog;
 import pl.szczodrzynski.edziennik.data.db.modules.login.LoginStore;
 import pl.szczodrzynski.edziennik.data.db.modules.profiles.Profile;
 import pl.szczodrzynski.edziennik.data.db.modules.profiles.ProfileFull;
+import pl.szczodrzynski.edziennik.di.DaggerAppComponent;
 import pl.szczodrzynski.edziennik.network.NetworkUtils;
 import pl.szczodrzynski.edziennik.network.TLSSocketFactory;
 import pl.szczodrzynski.edziennik.sync.SyncWorker;
@@ -90,7 +94,7 @@ import static pl.szczodrzynski.edziennik.data.db.modules.login.LoginStore.LOGIN_
 import static pl.szczodrzynski.edziennik.data.db.modules.login.LoginStore.LOGIN_TYPE_MOBIDZIENNIK;
 import static pl.szczodrzynski.edziennik.data.db.modules.login.LoginStore.LOGIN_TYPE_VULCAN;
 
-public class App extends androidx.multidex.MultiDexApplication implements Configuration.Provider {
+public class App extends DaggerApplication implements Configuration.Provider {
     private static final String TAG = "App";
     public static int profileId = -1;
     private Context mContext;
@@ -181,6 +185,17 @@ public class App extends androidx.multidex.MultiDexApplication implements Config
         return Icon.createWithBitmap(bitmap);
     }
 
+    @Override
+    protected void attachBaseContext(Context base) {
+        super.attachBaseContext(base);
+        MultiDex.install(this);
+    }
+
+    @Override
+    protected AndroidInjector<? extends DaggerApplication> applicationInjector() {
+        return DaggerAppComponent.factory().create(this);
+    }
+
     @Override
     public void onCreate() {
         super.onCreate();
@@ -543,6 +558,7 @@ public class App extends androidx.multidex.MultiDexApplication implements Config
             appConfig = new AppConfig(this);
         }
     }
+
     public void saveConfig()
     {
         try {
@@ -724,5 +740,4 @@ public class App extends androidx.multidex.MultiDexApplication implements Config
             devMode = false;
         }
     }
-
 }

app/src/main/java/pl/szczodrzynski/edziennik/MainActivity.kt

@@ -9,7 +9,6 @@ import android.os.*
 import android.view.Gravity
 import android.view.View
 import android.widget.Toast
-import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.PopupMenu
 import androidx.core.graphics.ColorUtils
 import androidx.lifecycle.Observer
@@ -26,6 +25,7 @@ import com.mikepenz.materialdrawer.model.ProfileDrawerItem
 import com.mikepenz.materialdrawer.model.ProfileSettingDrawerItem
 import com.mikepenz.materialdrawer.model.interfaces.IDrawerItem
 import com.mikepenz.materialdrawer.model.interfaces.IProfile
+import dagger.android.support.DaggerAppCompatActivity
 import org.greenrobot.eventbus.EventBus
 import org.greenrobot.eventbus.Subscribe
 import org.greenrobot.eventbus.ThreadMode
@@ -78,7 +78,7 @@ import java.io.IOException
 import java.util.*
 import kotlin.math.roundToInt
 
-class MainActivity : AppCompatActivity() {
+class MainActivity : DaggerAppCompatActivity() {
     companion object {
 
         var useOldMessages = false
@@ -340,7 +340,7 @@ class MainActivity : AppCompatActivity() {
         if (!profileListEmpty) {
             handleIntent(intent?.extras)
         }
-        app.db.profileDao().getAllFull().observe(this, Observer { profiles ->
+        app.db.profileDao().allFull.observe(this, Observer { profiles ->
             // TODO fix weird -1 profiles ???
             profiles.removeAll { it.id < 0 }
             drawer.setProfileList(profiles)
@@ -357,7 +357,7 @@ class MainActivity : AppCompatActivity() {
         if (app.profile != null)
             setDrawerItems()
 
-        app.db.metadataDao().getUnreadCounts().observe(this, Observer { unreadCounters ->
+        app.db.metadataDao().unreadCounts.observe(this, Observer { unreadCounters ->
             unreadCounters.map {
                 it.type = it.thingType
             }

app/src/main/java/pl/szczodrzynski/edziennik/data/db/AppDb.java

@@ -10,6 +10,8 @@ import androidx.room.TypeConverters;
 import androidx.room.migration.Migration;
 import androidx.sqlite.db.SupportSQLiteDatabase;
 
+import javax.inject.Singleton;
+
 import pl.szczodrzynski.edziennik.data.db.converters.ConverterDate;
 import pl.szczodrzynski.edziennik.data.db.converters.ConverterDateInt;
 import pl.szczodrzynski.edziennik.data.db.converters.ConverterJsonObject;
@@ -74,6 +76,7 @@ import pl.szczodrzynski.edziennik.data.db.modules.teams.Team;
 import pl.szczodrzynski.edziennik.data.db.modules.teams.TeamDao;
 import pl.szczodrzynski.edziennik.utils.models.Date;
 
+@Singleton
 @Database(entities = {
         Grade.class,
         //GradeCategory.class,
@@ -114,33 +117,60 @@ import pl.szczodrzynski.edziennik.utils.models.Date;
 public abstract class AppDb extends RoomDatabase {
 
     public abstract GradeDao gradeDao();
+
     //public abstract GradeCategoryDao gradeCategoryDao();
     public abstract TeacherDao teacherDao();
+
     public abstract TeacherAbsenceDao teacherAbsenceDao();
+
     public abstract TeacherAbsenceTypeDao teacherAbsenceTypeDao();
+
     public abstract SubjectDao subjectDao();
+
     public abstract NoticeDao noticeDao();
+
     public abstract LessonDao lessonDao();
+
     public abstract LessonChangeDao lessonChangeDao();
+
     public abstract TeamDao teamDao();
+
     public abstract AttendanceDao attendanceDao();
+
     public abstract EventDao eventDao();
+
     public abstract EventTypeDao eventTypeDao();
+
     public abstract LoginStoreDao loginStoreDao();
+
     public abstract ProfileDao profileDao();
+
     public abstract LuckyNumberDao luckyNumberDao();
+
     public abstract AnnouncementDao announcementDao();
+
     public abstract GradeCategoryDao gradeCategoryDao();
+
     public abstract FeedbackMessageDao feedbackMessageDao();
+
     public abstract MessageDao messageDao();
+
     public abstract MessageRecipientDao messageRecipientDao();
+
     public abstract DebugLogDao debugLogDao();
+
     public abstract EndpointTimerDao endpointTimerDao();
+
     public abstract LessonRangeDao lessonRangeDao();
+
     public abstract NotificationDao notificationDao();
+
     public abstract ClassroomDao classroomDao();
+
     public abstract NoticeTypeDao noticeTypeDao();
+
     public abstract AttendanceTypeDao attendanceTypeDao();
+
     public abstract MetadataDao metadataDao();
 
     private static volatile AppDb INSTANCE;

app/src/main/java/pl/szczodrzynski/edziennik/data/db/DatabaseModule.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) Kacper Ziubryniewicz 2019-11-4
+ */
+
+package pl.szczodrzynski.edziennik.data.db
+
+import android.content.Context
+import dagger.Module
+import dagger.Provides
+import javax.inject.Singleton
+
+@Module
+internal class DatabaseModule {
+
+    @Singleton
+    @Provides
+    fun provideDatabase(context: Context) = AppDb.getDatabase(context)
+
+    @Singleton
+    @Provides
+    fun provideEventDao(database: AppDb) = database.eventDao()
+
+    @Singleton
+    @Provides
+    fun provideMetadataDao(database: AppDb) = database.metadataDao()
+}

app/src/main/java/pl/szczodrzynski/edziennik/data/db/modules/events/EventDao.java

@@ -1,19 +1,22 @@
 package pl.szczodrzynski.edziennik.data.db.modules.events;
 
+import android.util.Log;
+
+import androidx.annotation.NonNull;
 import androidx.lifecycle.LiveData;
-import androidx.sqlite.db.SimpleSQLiteQuery;
-import androidx.sqlite.db.SupportSQLiteQuery;
 import androidx.room.Dao;
 import androidx.room.Insert;
 import androidx.room.OnConflictStrategy;
 import androidx.room.Query;
 import androidx.room.RawQuery;
 import androidx.room.Transaction;
-import androidx.annotation.NonNull;
-import android.util.Log;
+import androidx.sqlite.db.SimpleSQLiteQuery;
+import androidx.sqlite.db.SupportSQLiteQuery;
 
 import java.util.List;
 
+import javax.inject.Singleton;
+
 import pl.szczodrzynski.edziennik.utils.models.Date;
 import pl.szczodrzynski.edziennik.utils.models.Time;
 
@@ -21,6 +24,7 @@ import static pl.szczodrzynski.edziennik.data.db.modules.metadata.Metadata.TYPE_
 import static pl.szczodrzynski.edziennik.data.db.modules.metadata.Metadata.TYPE_HOMEWORK;
 import static pl.szczodrzynski.edziennik.data.db.modules.metadata.Metadata.TYPE_LESSON_CHANGE;
 
+@Singleton
 @Dao
 public abstract class EventDao {
     @Insert(onConflict = OnConflictStrategy.REPLACE)
@@ -34,26 +38,32 @@ public abstract class EventDao {
 
     @Query("DELETE FROM events WHERE profileId = :profileId AND eventId = :id")
     public abstract void remove(int profileId, long id);
+
     @Query("DELETE FROM metadata WHERE profileId = :profileId AND thingType = :thingType AND thingId = :thingId")
     public abstract void removeMetadata(int profileId, int thingType, long thingId);
+
     @Transaction
     public void remove(int profileId, int type, long id) {
         remove(profileId, id);
         removeMetadata(profileId, type == Event.TYPE_HOMEWORK ? TYPE_HOMEWORK : TYPE_EVENT, id);
     }
+
     @Transaction
     public void remove(Event event) {
         remove(event.profileId, event.type, event.id);
     }
+
     @Transaction
     public void remove(int profileId, Event event) {
         remove(profileId, event.type, event.id);
     }
+
     @Query("DELETE FROM events WHERE teamId = :teamId AND eventId = :id")
     public abstract void removeByTeamId(long teamId, long id);
 
     @RawQuery(observedEntities = {Event.class})
     abstract LiveData<List<EventFull>> getAll(SupportSQLiteQuery query);
+
     public LiveData<List<EventFull>> getAll(int profileId, String filter) {
         String query = "SELECT \n" +
                 "*, \n" +
@@ -71,24 +81,31 @@ public abstract class EventDao {
         Log.d("DB", query);
         return getAll(new SimpleSQLiteQuery(query));
     }
+
     public LiveData<List<EventFull>> getAll(int profileId) {
         return getAll(profileId, "1");
     }
+
     public List<EventFull> getAllNow(int profileId) {
         return getAllNow(profileId, "1");
     }
+
     public LiveData<List<EventFull>> getAllWhere(int profileId, String filter) {
         return getAll(profileId, filter);
     }
+
     public LiveData<List<EventFull>> getAllByType(int profileId, int type, String filter) {
         return getAll(profileId, "eventType = "+type+" AND "+filter);
     }
+
     public LiveData<List<EventFull>> getAllByDate(int profileId, @NonNull Date date) {
         return getAll(profileId, "eventDate = '"+date.getStringY_m_d()+"'");
     }
+
     public List<EventFull> getAllByDateNow(int profileId, @NonNull Date date) {
         return getAllNow(profileId, "eventDate = '"+date.getStringY_m_d()+"'");
     }
+
     public LiveData<List<EventFull>> getAllByDateTime(int profileId, @NonNull Date date, Time time) {
         if (time == null)
             return getAllByDate(profileId, date);
@@ -97,6 +114,7 @@ public abstract class EventDao {
 
     @RawQuery
     abstract List<EventFull> getAllNow(SupportSQLiteQuery query);
+
     public List<EventFull> getAllNow(int profileId, String filter) {
         return getAllNow(new SimpleSQLiteQuery("SELECT \n" +
                 "*, \n" +
@@ -112,6 +130,7 @@ public abstract class EventDao {
                 "WHERE events.profileId = "+profileId+" AND events.eventBlacklisted = 0 AND "+filter+"\n" +
                 "ORDER BY eventStartTime, addedDate ASC"));
     }
+
     public List<EventFull> getNotNotifiedNow(int profileId) {
         return getAllNow(profileId, "notified = 0");
     }

app/src/main/java/pl/szczodrzynski/edziennik/data/db/modules/metadata/MetadataDao.java

@@ -9,7 +9,8 @@ import androidx.room.Transaction;
 
 import java.util.List;
 
-import pl.szczodrzynski.edziennik.data.db.modules.notices.Notice;
+import javax.inject.Singleton;
+
 import pl.szczodrzynski.edziennik.data.db.modules.announcements.Announcement;
 import pl.szczodrzynski.edziennik.data.db.modules.attendance.Attendance;
 import pl.szczodrzynski.edziennik.data.db.modules.events.Event;
@@ -17,6 +18,7 @@ import pl.szczodrzynski.edziennik.data.db.modules.grades.Grade;
 import pl.szczodrzynski.edziennik.data.db.modules.lessons.LessonChange;
 import pl.szczodrzynski.edziennik.data.db.modules.lessons.LessonFull;
 import pl.szczodrzynski.edziennik.data.db.modules.messages.Message;
+import pl.szczodrzynski.edziennik.data.db.modules.notices.Notice;
 import pl.szczodrzynski.edziennik.utils.models.UnreadCounter;
 
 import static pl.szczodrzynski.edziennik.data.db.modules.metadata.Metadata.TYPE_ANNOUNCEMENT;
@@ -28,6 +30,7 @@ import static pl.szczodrzynski.edziennik.data.db.modules.metadata.Metadata.TYPE_
 import static pl.szczodrzynski.edziennik.data.db.modules.metadata.Metadata.TYPE_MESSAGE;
 import static pl.szczodrzynski.edziennik.data.db.modules.metadata.Metadata.TYPE_NOTICE;
 
+@Singleton
 @Dao
 public abstract class MetadataDao {
     @Insert(onConflict = OnConflictStrategy.IGNORE)
@@ -43,7 +46,6 @@ public abstract class MetadataDao {
     abstract void updateNotified(int profileId, int thingType, long thingId, boolean notified);
 
 
-
     @Transaction
     public void setSeen(List<Metadata> metadataList) {
         for (Metadata metadata: metadataList) {
@@ -152,7 +154,6 @@ public abstract class MetadataDao {
     }
 
 
-
     @Query("UPDATE metadata SET seen = :seen WHERE profileId = :profileId AND thingType = :thingType")
     public abstract void setAllSeen(int profileId, int thingType, boolean seen);
 
@@ -166,7 +167,6 @@ public abstract class MetadataDao {
     public abstract void setAllNotified(int profileId, boolean notified);
 
 
-
     @Query("SELECT count() FROM metadata WHERE profileId = :profileId AND thingType = :thingType AND seen = 0")
     public abstract LiveData<Integer> countUnseen(int profileId, int thingType);
 
@@ -183,7 +183,6 @@ public abstract class MetadataDao {
     public abstract LiveData<Integer> countUnseen();
 
 
-
     @Query("DELETE FROM metadata WHERE profileId = :profileId AND thingType = :thingType AND thingId = :thingId")
     public abstract void delete(int profileId, int thingType, long thingId);
 
@@ -191,12 +190,10 @@ public abstract class MetadataDao {
     public abstract void deleteAll(int profileId);
 
 
-
     @Query("SELECT profileId, thingType, COUNT(thingId) AS count FROM metadata WHERE seen = 0 GROUP BY profileId, thingType")
     public abstract LiveData<List<UnreadCounter>> getUnreadCounts();
 
 
-
     @Query("DELETE FROM metadata WHERE profileId = :profileId AND thingType = "+TYPE_GRADE+" AND thingId NOT IN (SELECT gradeId FROM grades WHERE profileId = :profileId);")
     public abstract void deleteUnusedGrades(int profileId);
 

app/src/main/java/pl/szczodrzynski/edziennik/di/AppComponent.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) Kacper Ziubryniewicz 2019-11-4
+ */
+
+package pl.szczodrzynski.edziennik.di
+
+import dagger.Component
+import dagger.android.AndroidInjector
+import dagger.android.support.AndroidSupportInjectionModule
+import pl.szczodrzynski.edziennik.App
+import pl.szczodrzynski.edziennik.data.db.DatabaseModule
+import javax.inject.Singleton
+
+@Singleton
+@Component(modules = [
+    AndroidSupportInjectionModule::class,
+    BindingModule::class,
+    AppModule::class,
+    DatabaseModule::class
+])
+interface AppComponent : AndroidInjector<App> {
+
+    @Component.Factory
+    interface Factory : AndroidInjector.Factory<App>
+}

app/src/main/java/pl/szczodrzynski/edziennik/di/AppModule.kt

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) Kacper Ziubryniewicz 2019-11-4
+ */
+
+package pl.szczodrzynski.edziennik.di
+
+import android.content.Context
+import dagger.Module
+import dagger.Provides
+import pl.szczodrzynski.edziennik.App
+import javax.inject.Singleton
+
+@Module
+internal class AppModule {
+
+    @Singleton
+    @Provides
+    fun provideContext(app: App): Context = app
+}

app/src/main/java/pl/szczodrzynski/edziennik/di/BindingModule.kt

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) Kacper Ziubryniewicz 2019-11-4
+ */
+
+package pl.szczodrzynski.edziennik.di
+
+import dagger.Module
+import dagger.android.ContributesAndroidInjector
+import pl.szczodrzynski.edziennik.MainActivity
+import pl.szczodrzynski.edziennik.di.scopes.PerActivity
+import pl.szczodrzynski.edziennik.di.scopes.PerFragment
+import pl.szczodrzynski.edziennik.ui.modules.homework.HomeworkFragment
+import pl.szczodrzynski.edziennik.ui.modules.homework.list.HomeworkListFragment
+
+@Module
+@Suppress("unused")
+internal abstract class BindingModule {
+
+    /**
+     * ACTIVITIES
+     */
+
+    @PerActivity
+    @ContributesAndroidInjector
+    abstract fun bindMainActivity(): MainActivity
+
+    /**
+     * FRAGMENTS
+     */
+
+    @PerFragment
+    @ContributesAndroidInjector
+    abstract fun bindHomeworkFragment(): HomeworkFragment
+
+    @PerFragment
+    @ContributesAndroidInjector
+    abstract fun bindHomeworkListFragment(): HomeworkListFragment
+}

app/src/main/java/pl/szczodrzynski/edziennik/di/scopes/PerActivity.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) Kacper Ziubryniewicz 2019-11-4
+ */
+
+package pl.szczodrzynski.edziennik.di.scopes
+
+import javax.inject.Scope
+
+@Scope
+@Retention(AnnotationRetention.RUNTIME)
+annotation class PerActivity

app/src/main/java/pl/szczodrzynski/edziennik/di/scopes/PerFragment.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright (c) Kacper Ziubryniewicz 2019-11-4
+ */
+
+package pl.szczodrzynski.edziennik.di.scopes
+
+import javax.inject.Scope
+
+@Scope
+@Retention(AnnotationRetention.RUNTIME)
+annotation class PerFragment

app/src/main/java/pl/szczodrzynski/edziennik/ui/base/BaseFragment.kt

@@ -5,11 +5,11 @@
 package pl.szczodrzynski.edziennik.ui.base
 
 import android.widget.Toast
-import androidx.fragment.app.Fragment
+import dagger.android.support.DaggerFragment
 
-abstract class BaseFragment<T : BasePresenter<out BaseView>> : Fragment(), BaseView {
+abstract class BaseFragment<T : BasePresenter<out BaseView>> : DaggerFragment(), BaseView {
 
-    abstract val presenter: T
+    abstract var presenter: T
 
     override fun showMessage(text: String) {
         Toast.makeText(activity, text, Toast.LENGTH_SHORT).show()

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/HomeworkFragment.kt

@@ -17,18 +17,21 @@ import pl.szczodrzynski.edziennik.ui.modules.messages.MessagesFragment
 import pl.szczodrzynski.edziennik.utils.Themes
 import pl.szczodrzynski.navlib.bottomsheet.items.BottomSheetPrimaryItem
 import pl.szczodrzynski.navlib.bottomsheet.items.BottomSheetSeparatorItem
+import javax.inject.Inject
 
 class HomeworkFragment : BaseFragment<HomeworkPresenter>(), HomeworkView {
     companion object {
         var pageSelection = 0
     }
 
-    override lateinit var app: App
-
     private lateinit var activity: MainActivity
     private lateinit var b: FragmentHomeworkBinding
 
-    override val presenter: HomeworkPresenter = HomeworkPresenter()
+    @Inject
+    override lateinit var presenter: HomeworkPresenter
+
+    @Inject
+    lateinit var app: App
 
     override val markAsReadSuccessString: String
         get() = getString(R.string.main_menu_mark_as_read_success)
@@ -40,8 +43,6 @@ class HomeworkFragment : BaseFragment<HomeworkPresenter>(), HomeworkView {
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         activity = (getActivity() as MainActivity)
-        app = activity.application as App
-
         context!!.theme.applyStyle(Themes.appTheme, true)
         if (app.profile == null)
             return inflater.inflate(R.layout.fragment_loading, container, false)

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/HomeworkPresenter.kt

@@ -7,9 +7,13 @@ package pl.szczodrzynski.edziennik.ui.modules.homework
 import android.os.AsyncTask
 import pl.szczodrzynski.edziennik.App
 import pl.szczodrzynski.edziennik.data.db.modules.metadata.Metadata
+import pl.szczodrzynski.edziennik.data.db.modules.metadata.MetadataDao
 import pl.szczodrzynski.edziennik.ui.base.BasePresenter
+import javax.inject.Inject
 
-class HomeworkPresenter : BasePresenter<HomeworkView>() {
+class HomeworkPresenter @Inject constructor(
+        private val metadataDao: MetadataDao
+) : BasePresenter<HomeworkView>() {
 
     override fun onAttachView(view: HomeworkView) {
         super.onAttachView(view)
@@ -31,7 +35,7 @@ class HomeworkPresenter : BasePresenter<HomeworkView>() {
         view?.apply {
             closeBottomSheet()
             AsyncTask.execute {
-                app.db.metadataDao().setAllSeen(App.profileId, Metadata.TYPE_HOMEWORK, true)
+                metadataDao.setAllSeen(App.profileId, Metadata.TYPE_HOMEWORK, true)
             }
             showMessage(markAsReadSuccessString)
         }

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/HomeworkView.kt

@@ -4,13 +4,10 @@
 
 package pl.szczodrzynski.edziennik.ui.modules.homework
 
-import pl.szczodrzynski.edziennik.App
 import pl.szczodrzynski.edziennik.ui.base.BaseView
 
 interface HomeworkView : BaseView {
 
-    var app: App
-
     val markAsReadSuccessString: String
 
     fun initView()

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/list/HomeworkListAdapter.kt

@@ -19,12 +19,16 @@ import androidx.recyclerview.widget.RecyclerView
 import pl.szczodrzynski.edziennik.App
 import pl.szczodrzynski.edziennik.R
 import pl.szczodrzynski.edziennik.data.db.modules.events.EventFull
+import pl.szczodrzynski.edziennik.data.db.modules.metadata.MetadataDao
 import pl.szczodrzynski.edziennik.databinding.RowHomeworkItemBinding
 import pl.szczodrzynski.edziennik.utils.Utils.bs
 import pl.szczodrzynski.edziennik.utils.models.Date
+import javax.inject.Inject
 import kotlin.math.abs
 
-class HomeworkListAdapter : RecyclerView.Adapter<HomeworkListAdapter.ViewHolder>() {
+class HomeworkListAdapter @Inject constructor(
+        private val metadataDao: MetadataDao
+) : RecyclerView.Adapter<HomeworkListAdapter.ViewHolder>() {
 
     val homeworkList: MutableList<EventFull> = mutableListOf()
     lateinit var onItemEditClick: (homework: EventFull) -> Unit
@@ -55,7 +59,7 @@ class HomeworkListAdapter : RecyclerView.Adapter<HomeworkListAdapter.ViewHolder>
 
                     homework.seen = true
                     AsyncTask.execute {
-                        app.db.metadataDao().setSeen(App.profileId, homework, true)
+                        metadataDao.setSeen(App.profileId, homework, true)
                     }
                 }
                 else -> b.homeworkItemTopic.background = null
@@ -86,7 +90,6 @@ class HomeworkListAdapter : RecyclerView.Adapter<HomeworkListAdapter.ViewHolder>
         fun getString(resId: Int, vararg formatArgs: Any): String = itemView.context.getString(resId, *formatArgs)
         fun getDrawable(resId: Int): Drawable? = ContextCompat.getDrawable(itemView.context, resId)
 
-        val app: App get() = itemView.context.applicationContext as App
         val resources: Resources get() = itemView.context.resources
 
         fun dateDiffString(diff: Int): String {

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/list/HomeworkListFragment.kt

@@ -20,17 +20,21 @@ import pl.szczodrzynski.edziennik.databinding.HomeworkListBinding
 import pl.szczodrzynski.edziennik.ui.base.BaseFragment
 import pl.szczodrzynski.edziennik.ui.dialogs.event.EventManualDialog
 import pl.szczodrzynski.edziennik.utils.Themes
+import javax.inject.Inject
 
 class HomeworkListFragment : BaseFragment<HomeworkListPresenter>(), HomeworkListView {
 
-    override lateinit var app: App
-
     private lateinit var activity: MainActivity
     private lateinit var b: HomeworkListBinding
 
-    private lateinit var homeworkAdapter: HomeworkListAdapter
+    @Inject
+    override lateinit var presenter: HomeworkListPresenter
 
-    override val presenter: HomeworkListPresenter = HomeworkListPresenter()
+    @Inject
+    lateinit var app: App
+
+    @Inject
+    lateinit var homeworkAdapter: HomeworkListAdapter
 
     override val viewLifecycle: Lifecycle
         get() = lifecycle
@@ -52,7 +56,6 @@ class HomeworkListFragment : BaseFragment<HomeworkListPresenter>(), HomeworkList
         activity = (getActivity() as MainActivity?) ?: return null
         if (context == null)
             return null
-        app = activity.application as App
         context!!.theme.applyStyle(Themes.appTheme, true)
         if (app.profile == null)
             return inflater.inflate(R.layout.fragment_loading, container, false)
@@ -66,11 +69,11 @@ class HomeworkListFragment : BaseFragment<HomeworkListPresenter>(), HomeworkList
         if (app.profile == null || !isAdded)
             return
 
-        val layoutManager = LinearLayoutManager(context)
-        layoutManager.reverseLayout = true
-        layoutManager.stackFromEnd = true
+        val layoutManager = LinearLayoutManager(context).apply {
+            reverseLayout = true
+            stackFromEnd = true
+        }
 
-        homeworkAdapter = HomeworkListAdapter()
         homeworkAdapter.onItemEditClick = presenter::onItemEditClick
 
         b.homeworkView.apply {

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/list/HomeworkListPresenter.kt

@@ -6,12 +6,17 @@ package pl.szczodrzynski.edziennik.ui.modules.homework.list
 
 import pl.szczodrzynski.edziennik.App
 import pl.szczodrzynski.edziennik.data.db.modules.events.Event
+import pl.szczodrzynski.edziennik.data.db.modules.events.EventDao
 import pl.szczodrzynski.edziennik.data.db.modules.events.EventFull
 import pl.szczodrzynski.edziennik.ui.base.BasePresenter
 import pl.szczodrzynski.edziennik.ui.modules.homework.HomeworkDate
 import pl.szczodrzynski.edziennik.utils.models.Date
+import javax.inject.Inject
 
-class HomeworkListPresenter : BasePresenter<HomeworkListView>() {
+class HomeworkListPresenter @Inject constructor(
+        private val app: App,
+        private val eventDao: EventDao
+) : BasePresenter<HomeworkListView>() {
 
     fun onAttachView(view: HomeworkListView, homeworkDate: Int?) {
         super.onAttachView(view)
@@ -28,8 +33,7 @@ class HomeworkListPresenter : BasePresenter<HomeworkListView>() {
         }
 
         view?.run {
-            app.db.eventDao()
-                    .getAllByType(App.profileId, Event.TYPE_HOMEWORK, filter)
+            eventDao.getAllByType(App.profileId, Event.TYPE_HOMEWORK, filter)
                     .observe({ viewLifecycle }, { homeworkList ->
                         if (app.profile == null) return@observe
 

app/src/main/java/pl/szczodrzynski/edziennik/ui/modules/homework/list/HomeworkListView.kt

@@ -5,14 +5,11 @@
 package pl.szczodrzynski.edziennik.ui.modules.homework.list
 
 import androidx.lifecycle.Lifecycle
-import pl.szczodrzynski.edziennik.App
 import pl.szczodrzynski.edziennik.data.db.modules.events.EventFull
 import pl.szczodrzynski.edziennik.ui.base.BaseView
 
 interface HomeworkListView : BaseView {
 
-    var app: App
-
     val viewLifecycle: Lifecycle
 
     fun initView()

build.gradle

@@ -47,7 +47,8 @@ buildscript {
 
                 navlib           : "e4ad01dc87",
 
-                gifdrawable      : "1.2.15"
+                gifdrawable      : "1.2.15",
+                dagger           : "2.24"
         ]
     }