Option to clear updates feed

.idea/dictionaries/admin.xml

@@ -3,6 +3,7 @@
     <words>
       <w>chucker</w>
       <w>desu</w>
+      <w>failsafe</w>
       <w>koin</w>
       <w>kotatsu</w>
       <w>manga</w>

app/build.gradle

@@ -16,7 +16,7 @@ android {
 		minSdkVersion 21
 		targetSdkVersion 29
 		versionCode gitCommits
-		versionName '0.5-b1'
+		versionName '0.5-b2'
 
 		kapt {
 			arguments {
@@ -61,17 +61,16 @@ dependencies {
 	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.6'
 	implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.6'
 
-	implementation 'androidx.core:core-ktx:1.4.0-alpha01'
-	implementation 'androidx.appcompat:appcompat:1.3.0-alpha01'
-	implementation 'androidx.activity:activity-ktx:1.2.0-alpha05'
-	implementation 'androidx.fragment:fragment-ktx:1.3.0-alpha05'
-	implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.0-alpha03'
-	implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta6'
-	implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0-rc01'
-	implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha03'
+	implementation 'androidx.core:core-ktx:1.5.0-alpha01'
+	implementation 'androidx.activity:activity-ktx:1.2.0-alpha06'
+	implementation 'androidx.fragment:fragment-ktx:1.3.0-alpha06'
+	implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.0-alpha05'
+	implementation 'androidx.constraintlayout:constraintlayout:2.0.0-beta7'
+	implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
+	implementation 'androidx.recyclerview:recyclerview:1.2.0-alpha04'
 	implementation 'androidx.viewpager2:viewpager2:1.1.0-alpha01'
 	implementation 'androidx.preference:preference-ktx:1.1.1'
-	implementation 'androidx.work:work-runtime-ktx:2.4.0-beta01'
+	implementation 'androidx.work:work-runtime-ktx:2.4.0-rc01'
 	implementation 'com.google.android.material:material:1.3.0-alpha01'
 
 	implementation 'androidx.room:room-runtime:2.2.5'

app/src/main/java/org/koitharu/kotatsu/core/db/TrackLogsDao.kt

@@ -19,4 +19,10 @@ interface TrackLogsDao {
 
 	@Query("DELETE FROM track_logs WHERE manga_id = :mangaId")
 	suspend fun removeAll(mangaId: Long)
+
+	@Query("DELETE FROM track_logs WHERE manga_id NOT IN (SELECT manga_id FROM tracks)")
+	suspend fun cleanup()
+
+	@Query("SELECT COUNT(*) FROM track_logs")
+	suspend fun count(): Int
 }

app/src/main/java/org/koitharu/kotatsu/core/db/TracksDao.kt

@@ -25,11 +25,13 @@ abstract class TracksDao {
 	@Query("DELETE FROM tracks WHERE manga_id = :mangaId")
 	abstract suspend fun delete(mangaId: Long)
 
+	@Query("DELETE FROM tracks WHERE manga_id NOT IN (SELECT manga_id FROM history UNION SELECT manga_id FROM favourites)")
+	abstract suspend fun cleanup()
+
 	@Transaction
 	open suspend fun upsert(entity: TrackEntity) {
 		if (update(entity) == 0) {
 			insert(entity)
 		}
 	}
-
 }

app/src/main/java/org/koitharu/kotatsu/core/github/AppVersion.kt

@@ -9,5 +9,6 @@ data class AppVersion(
 	val name: String,
 	val url: String,
 	val apkSize: Long,
-	val apkUrl: String
+	val apkUrl: String,
+	val description: String
 ) : Parcelable

app/src/main/java/org/koitharu/kotatsu/core/github/GithubRepository.kt

@@ -22,7 +22,8 @@ class GithubRepository : KoinComponent {
 			url = json.getString("html_url"),
 			name = json.getString("name").removePrefix("v"),
 			apkSize = asset.getLong("size"),
-			apkUrl = asset.getString("browser_download_url")
+			apkUrl = asset.getString("browser_download_url"),
+			description = json.getString("body")
 		)
 	}
 }

app/src/main/java/org/koitharu/kotatsu/core/parser/LocalMangaRepository.kt

@@ -72,7 +72,6 @@ class LocalMangaRepository : MangaRepository, KoinComponent {
 			}
 	}
 
-
 	fun delete(manga: Manga): Boolean {
 		val file = Uri.parse(manga.url).toFile()
 		return file.delete()

app/src/main/java/org/koitharu/kotatsu/domain/MangaProviderFactory.kt

@@ -13,7 +13,8 @@ import java.util.*
 object MangaProviderFactory : KoinComponent {
 
 	private val loaderContext by inject<MangaLoaderContext>()
-	private val cache = EnumMap<MangaSource, WeakReference<MangaRepository>>(MangaSource::class.java)
+	private val cache =
+		EnumMap<MangaSource, WeakReference<MangaRepository>>(MangaSource::class.java)
 
 	fun getSources(includeHidden: Boolean): List<MangaSource> {
 		val settings = get<AppSettings>()
@@ -33,24 +34,37 @@ object MangaProviderFactory : KoinComponent {
 		}
 	}
 
-	fun createLocal(): LocalMangaRepository =
-		(cache[MangaSource.LOCAL]?.get() as? LocalMangaRepository)
-			?: LocalMangaRepository().also {
-				cache[MangaSource.LOCAL] = WeakReference<MangaRepository>(it)
+	fun createLocal(): LocalMangaRepository {
+		var instance = cache[MangaSource.LOCAL]?.get()
+		if (instance == null) {
+			synchronized(cache) {
+				instance = cache[MangaSource.LOCAL]?.get()
+				if (instance == null) {
+					instance = LocalMangaRepository()
+					cache[MangaSource.LOCAL] = WeakReference<MangaRepository>(instance)
+				}
 			}
+		}
+		return instance as LocalMangaRepository
+	}
 
 	@Throws(Throwable::class)
 	fun create(source: MangaSource): MangaRepository {
-		cache[source]?.get()?.let {
-			return it
+		var instance = cache[source]?.get()
+		if (instance == null) {
+			synchronized(cache) {
+				instance = cache[source]?.get()
+				if (instance == null) {
+					instance = try {
+						source.cls.getDeclaredConstructor(MangaLoaderContext::class.java)
+							.newInstance(loaderContext)
+					} catch (e: NoSuchMethodException) {
+						source.cls.newInstance()
+					}
+					cache[source] = WeakReference(instance!!)
+				}
+			}
 		}
-		val instance = try {
-			source.cls.getDeclaredConstructor(MangaLoaderContext::class.java)
-				.newInstance(loaderContext)
-		} catch (e: NoSuchMethodException) {
-			source.cls.newInstance()
-		}
-		cache[source] = WeakReference<MangaRepository>(instance)
-		return instance
+		return instance!!
 	}
 }

app/src/main/java/org/koitharu/kotatsu/domain/tracking/TrackingRepository.kt

@@ -44,6 +44,17 @@ class TrackingRepository : KoinComponent {
 		}
 	}
 
+	suspend fun count() = db.trackLogsDao.count()
+
+	suspend fun clearLogs() = db.trackLogsDao.clear()
+
+	suspend fun cleanup() {
+		db.withTransaction {
+			db.tracksDao.cleanup()
+			db.trackLogsDao.cleanup()
+		}
+	}
+
 	suspend fun storeTrackResult(
 		mangaId: Long,
 		knownChaptersCount: Int,

app/src/main/java/org/koitharu/kotatsu/ui/browser/BrowserActivity.kt

@@ -29,7 +29,7 @@ class BrowserActivity : BaseActivity(), BrowserCallback {
 		webView.webViewClient = BrowserClient(this)
 		val url = intent?.dataString
 		if (url.isNullOrEmpty()) {
-			finish()
+			finishAfterTransition()
 		} else {
 			webView.loadUrl(url)
 		}
@@ -43,7 +43,7 @@ class BrowserActivity : BaseActivity(), BrowserCallback {
 	override fun onOptionsItemSelected(item: MenuItem): Boolean = when (item.itemId) {
 		android.R.id.home -> {
 			webView.stopLoading()
-			finish()
+			finishAfterTransition()
 			true
 		}
 		R.id.action_browser -> {

app/src/main/java/org/koitharu/kotatsu/ui/common/BaseActivity.kt

@@ -1,12 +1,10 @@
 package org.koitharu.kotatsu.ui.common
 
-import android.view.KeyEvent
 import android.view.MenuItem
 import android.view.View
 import androidx.appcompat.widget.Toolbar
 import moxy.MvpAppCompatActivity
 import org.koin.core.KoinComponent
-import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.R
 
 abstract class BaseActivity : MvpAppCompatActivity(), KoinComponent {
@@ -29,13 +27,4 @@ abstract class BaseActivity : MvpAppCompatActivity(), KoinComponent {
 		onBackPressed()
 		true
 	} else super.onOptionsItemSelected(item)
-
-	override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
-		//TODO remove. Just for testing
-		if (BuildConfig.DEBUG && keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
-			recreate()
-			return true
-		}
-		return super.onKeyDown(keyCode, event)
-	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/common/SharedPresenterHolder.kt

@@ -0,0 +1,25 @@
+package org.koitharu.kotatsu.ui.common
+
+import android.util.ArrayMap
+import moxy.MvpPresenter
+import java.lang.ref.WeakReference
+
+abstract class SharedPresenterHolder<T : MvpPresenter<*>> {
+
+	private val cache = ArrayMap<Int, WeakReference<T>>(3)
+
+	fun getInstance(key: Int): T {
+		var instance = cache[key]?.get()
+		if (instance == null) {
+			instance = onCreatePresenter(key)
+			cache[key] = WeakReference(instance)
+		}
+		return instance
+	}
+
+	fun clear(key: Int) {
+		cache.remove(key)
+	}
+
+	protected abstract fun onCreatePresenter(key: Int): T
+}

app/src/main/java/org/koitharu/kotatsu/ui/details/ChaptersFragment.kt

@@ -25,7 +25,9 @@ class ChaptersFragment : BaseFragment(R.layout.fragment_chapters), MangaDetailsV
 	OnRecyclerItemClickListener<MangaChapter>, ActionMode.Callback {
 
 	@Suppress("unused")
-	private val presenter by moxyPresenter(factory = MangaDetailsPresenter.Companion::getInstance)
+	private val presenter by moxyPresenter {
+		MangaDetailsPresenter.getInstance(activity.hashCode())
+	}
 
 	private var manga: Manga? = null
 

app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsActivity.kt

@@ -37,7 +37,9 @@ import org.koitharu.kotatsu.utils.ext.getThemeColor
 class MangaDetailsActivity : BaseActivity(), MangaDetailsView,
 	TabLayoutMediator.TabConfigurationStrategy {
 
-	private val presenter by moxyPresenter(factory = MangaDetailsPresenter.Companion::getInstance)
+	private val presenter by moxyPresenter {
+		MangaDetailsPresenter.getInstance(hashCode())
+	}
 
 	private var manga: Manga? = null
 
@@ -52,7 +54,7 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView,
 				presenter.loadDetails(it, true)
 			} ?: intent?.getLongExtra(EXTRA_MANGA_ID, 0)?.takeUnless { it == 0L }?.let {
 				presenter.findMangaById(it)
-			} ?: finish()
+			} ?: finishAfterTransition()
 		}
 	}
 
@@ -73,13 +75,13 @@ class MangaDetailsActivity : BaseActivity(), MangaDetailsView,
 			this, getString(R.string._s_deleted_from_local_storage, manga.title),
 			Toast.LENGTH_SHORT
 		).show()
-		finish()
+		finishAfterTransition()
 	}
 
 	override fun onError(e: Throwable) {
 		if (manga == null) {
 			Toast.makeText(this, e.getDisplayMessage(resources), Toast.LENGTH_LONG).show()
-			finish()
+			finishAfterTransition()
 		} else {
 			Snackbar.make(pager, e.getDisplayMessage(resources), Snackbar.LENGTH_LONG).show()
 		}

app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsFragment.kt

@@ -29,7 +29,9 @@ class MangaDetailsFragment : BaseFragment(R.layout.fragment_details), MangaDetai
 	View.OnLongClickListener {
 
 	@Suppress("unused")
-	private val presenter by moxyPresenter(factory = MangaDetailsPresenter.Companion::getInstance)
+	private val presenter by moxyPresenter {
+		MangaDetailsPresenter.getInstance(activity.hashCode())
+	}
 
 	private var manga: Manga? = null
 	private var history: MangaHistory? = null

app/src/main/java/org/koitharu/kotatsu/ui/details/MangaDetailsPresenter.kt

@@ -21,13 +21,13 @@ import org.koitharu.kotatsu.domain.history.HistoryRepository
 import org.koitharu.kotatsu.domain.history.OnHistoryChangeListener
 import org.koitharu.kotatsu.domain.tracking.TrackingRepository
 import org.koitharu.kotatsu.ui.common.BasePresenter
+import org.koitharu.kotatsu.ui.common.SharedPresenterHolder
 import org.koitharu.kotatsu.utils.ext.safe
 import java.io.IOException
 
 @InjectViewState
-class MangaDetailsPresenter private constructor() : BasePresenter<MangaDetailsView>(),
-	OnHistoryChangeListener,
-	OnFavouritesChangeListener {
+class MangaDetailsPresenter private constructor(private val key: Int) :
+	BasePresenter<MangaDetailsView>(), OnHistoryChangeListener, OnFavouritesChangeListener {
 
 	private lateinit var historyRepository: HistoryRepository
 	private lateinit var favouritesRepository: FavouritesRepository
@@ -55,7 +55,7 @@ class MangaDetailsPresenter private constructor() : BasePresenter<MangaDetailsVi
 				} ?: throw MangaNotFoundException("Cannot find manga by id")
 				viewState.onMangaUpdated(manga)
 				loadDetails(manga, true)
-			} catch (_: CancellationException){
+			} catch (_: CancellationException) {
 			} catch (e: Throwable) {
 				if (BuildConfig.DEBUG) {
 					e.printStackTrace()
@@ -83,7 +83,7 @@ class MangaDetailsPresenter private constructor() : BasePresenter<MangaDetailsVi
 				viewState.onMangaUpdated(data)
 				this@MangaDetailsPresenter.manga = data
 				viewState.onNewChaptersChanged(trackingRepository.getNewChaptersCount(manga.id))
-			} catch (_: CancellationException){
+			} catch (_: CancellationException) {
 			} catch (e: Throwable) {
 				if (BuildConfig.DEBUG) {
 					e.printStackTrace()
@@ -198,18 +198,12 @@ class MangaDetailsPresenter private constructor() : BasePresenter<MangaDetailsVi
 	override fun onDestroy() {
 		HistoryRepository.unsubscribe(this)
 		FavouritesRepository.unsubscribe(this)
-		instance = null
+		clear(key)
 		super.onDestroy()
 	}
 
-	companion object {
+	companion object Holder : SharedPresenterHolder<MangaDetailsPresenter>() {
 
-		private var instance: MangaDetailsPresenter? = null
-
-		fun getInstance(): MangaDetailsPresenter = instance ?: synchronized(this) {
-			MangaDetailsPresenter().also {
-				instance = it
-			}
-		}
+		override fun onCreatePresenter(key: Int) = MangaDetailsPresenter(key)
 	}
 }

app/src/main/java/org/koitharu/kotatsu/ui/details/RelatedMangaFragment.kt

@@ -10,7 +10,9 @@ import org.koitharu.kotatsu.ui.list.MangaListFragment
 
 class RelatedMangaFragment : MangaListFragment<Unit>(), MangaDetailsView {
 
-	private val presenter by moxyPresenter(factory = MangaDetailsPresenter.Companion::getInstance)
+	private val presenter by moxyPresenter {
+		MangaDetailsPresenter.getInstance(activity.hashCode())
+	}
 
 	override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
 		super.onViewCreated(view, savedInstanceState)

app/src/main/java/org/koitharu/kotatsu/ui/download/DownloadNotification.kt

@@ -92,6 +92,11 @@ class DownloadNotification(private val context: Context) {
 		builder.setCategory(NotificationCompat.CATEGORY_PROGRESS)
 	}
 
+	fun setWaitingForNetwork() {
+		builder.setProgress(0, 0, false)
+		builder.setContentText(context.getString(R.string.waiting_for_network))
+	}
+
 	fun setPostProcessing() {
 		builder.setProgress(1, 0, true)
 		builder.setContentText(context.getString(R.string.processing_))

app/src/main/java/org/koitharu/kotatsu/ui/download/DownloadService.kt

@@ -13,6 +13,7 @@ import kotlinx.coroutines.*
 import kotlinx.coroutines.sync.Mutex
 import okhttp3.OkHttpClient
 import okhttp3.Request
+import okio.IOException
 import org.koin.android.ext.android.inject
 import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.R
@@ -24,10 +25,7 @@ import org.koitharu.kotatsu.domain.local.MangaZip
 import org.koitharu.kotatsu.ui.common.BaseService
 import org.koitharu.kotatsu.ui.common.dialog.CheckBoxAlertDialog
 import org.koitharu.kotatsu.utils.CacheUtils
-import org.koitharu.kotatsu.utils.ext.await
-import org.koitharu.kotatsu.utils.ext.retryUntilSuccess
-import org.koitharu.kotatsu.utils.ext.safe
-import org.koitharu.kotatsu.utils.ext.sub
+import org.koitharu.kotatsu.utils.ext.*
 import java.io.File
 import java.util.concurrent.TimeUnit
 import kotlin.collections.set
@@ -37,6 +35,7 @@ class DownloadService : BaseService() {
 
 	private lateinit var notification: DownloadNotification
 	private lateinit var wakeLock: PowerManager.WakeLock
+	private lateinit var connectivityManager: ConnectivityManager
 
 	private val okHttp by inject<OkHttpClient>()
 	private val cache by inject<PagesCache>()
@@ -47,6 +46,7 @@ class DownloadService : BaseService() {
 	override fun onCreate() {
 		super.onCreate()
 		notification = DownloadNotification(this)
+		connectivityManager = getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
 		wakeLock = (getSystemService(Context.POWER_SERVICE) as PowerManager)
 			.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "kotatsu:downloading")
 	}
@@ -88,9 +88,11 @@ class DownloadService : BaseService() {
 			try {
 				val repo = MangaProviderFactory.create(manga.source)
 				val cover = safe {
-					Coil.execute(GetRequestBuilder(this@DownloadService)
-						.data(manga.coverUrl)
-						.build()).drawable
+					Coil.execute(
+						GetRequestBuilder(this@DownloadService)
+							.data(manga.coverUrl)
+							.build()
+					).drawable
 				}
 				withContext(Dispatchers.Main) {
 					notification.setLargeIcon(cover)
@@ -112,23 +114,30 @@ class DownloadService : BaseService() {
 					if (chaptersIds == null || chapter.id in chaptersIds) {
 						val pages = repo.getPages(chapter)
 						for ((pageIndex, page) in pages.withIndex()) {
-							val url = repo.getPageFullUrl(page)
-							val file = cache[url] ?: downloadPage(url, destination)
-							output.addPage(
-								chapter,
-								file,
-								pageIndex,
-								MimeTypeMap.getFileExtensionFromUrl(url)
+							failsafe@ do {
+								try {
+									val url = repo.getPageFullUrl(page)
+									val file = cache[url] ?: downloadPage(url, destination)
+									output.addPage(
+										chapter,
+										file,
+										pageIndex,
+										MimeTypeMap.getFileExtensionFromUrl(url)
+									)
+								} catch (e: IOException) {
+									notification.setWaitingForNetwork()
+									notification.update()
+									connectivityManager.waitForNetwork()
+									continue@failsafe
+								}
+							} while (false)
+							notification.setProgress(
+								chapters.size,
+								pages.size,
+								chapterIndex,
+								pageIndex
 							)
-							withContext(Dispatchers.Main) {
-								notification.setProgress(
-									chapters.size,
-									pages.size,
-									chapterIndex,
-									pageIndex
-								)
-								notification.update()
-							}
+							notification.update()
 						}
 					}
 				}

app/src/main/java/org/koitharu/kotatsu/ui/list/MainActivity.kt

@@ -11,7 +11,6 @@ import android.view.Menu
 import android.view.MenuItem
 import androidx.appcompat.app.ActionBarDrawerToggle
 import androidx.core.view.isVisible
-import androidx.core.view.postDelayed
 import androidx.fragment.app.Fragment
 import androidx.swiperefreshlayout.widget.CircularProgressDrawable
 import com.google.android.material.navigation.NavigationView
@@ -26,14 +25,14 @@ import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.domain.MangaProviderFactory
 import org.koitharu.kotatsu.ui.common.BaseActivity
 import org.koitharu.kotatsu.ui.list.favourites.FavouritesContainerFragment
+import org.koitharu.kotatsu.ui.list.feed.FeedFragment
 import org.koitharu.kotatsu.ui.list.history.HistoryListFragment
 import org.koitharu.kotatsu.ui.list.local.LocalListFragment
 import org.koitharu.kotatsu.ui.list.remote.RemoteListFragment
-import org.koitharu.kotatsu.ui.list.feed.FeedFragment
 import org.koitharu.kotatsu.ui.reader.ReaderActivity
 import org.koitharu.kotatsu.ui.reader.ReaderState
 import org.koitharu.kotatsu.ui.search.SearchHelper
-import org.koitharu.kotatsu.ui.settings.AppUpdateService
+import org.koitharu.kotatsu.ui.settings.AppUpdateChecker
 import org.koitharu.kotatsu.ui.settings.SettingsActivity
 import org.koitharu.kotatsu.ui.tracker.TrackWorker
 import org.koitharu.kotatsu.utils.ext.getDisplayMessage
@@ -70,10 +69,8 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
 		} ?: run {
 			openDefaultSection()
 		}
-		drawer.postDelayed(2000) {
-			AppUpdateService.startIfRequired(applicationContext)
-		}
 		TrackWorker.setup(applicationContext)
+		AppUpdateChecker(this).invoke()
 	}
 
 	override fun onDestroy() {

app/src/main/java/org/koitharu/kotatsu/ui/list/MangaListFragment.kt

@@ -41,9 +41,9 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list),
 	SectionItemDecoration.Callback, SwipeRefreshLayout.OnRefreshListener {
 
 	private val settings by inject<AppSettings>()
-	private val adapterConfig = MergeAdapter.Config.Builder()
+	private val adapterConfig = ConcatAdapter.Config.Builder()
 		.setIsolateViewTypes(true)
-		.setStableIdMode(MergeAdapter.Config.StableIdMode.SHARED_STABLE_IDS)
+		.setStableIdMode(ConcatAdapter.Config.StableIdMode.SHARED_STABLE_IDS)
 		.build()
 
 	private var adapter: MangaListAdapter? = null
@@ -245,18 +245,17 @@ abstract class MangaListFragment<E> : BaseFragment(R.layout.fragment_list),
 		adapter?.listMode = mode
 		recyclerView.layoutManager = when (mode) {
 			ListMode.GRID -> {
-				val spanCount = UiUtils.resolveGridSpanCount(ctx)
-				GridLayoutManager(ctx, spanCount).apply {
+				GridLayoutManager(ctx, UiUtils.resolveGridSpanCount(ctx)).apply {
 					spanSizeLookup = object : GridLayoutManager.SpanSizeLookup() {
 						override fun getSpanSize(position: Int) = if (position < getItemsCount())
-							1 else spanCount
+							1 else this@apply.spanCount
 					}
 				}
 			}
 			else -> LinearLayoutManager(ctx)
 		}
 		recyclerView.recycledViewPool.clear()
-		recyclerView.adapter = MergeAdapter(adapterConfig, adapter, progressAdapter)
+		recyclerView.adapter = ConcatAdapter(adapterConfig, adapter, progressAdapter)
 		recyclerView.addItemDecoration(
 			when (mode) {
 				ListMode.LIST -> DividerItemDecoration(ctx, RecyclerView.VERTICAL)

app/src/main/java/org/koitharu/kotatsu/ui/list/MangaListSheet.kt

@@ -36,9 +36,9 @@ abstract class MangaListSheet<E> : BaseBottomSheet(R.layout.sheet_list),
 	SharedPreferences.OnSharedPreferenceChangeListener, Toolbar.OnMenuItemClickListener {
 
 	private val settings by inject<AppSettings>()
-	private val adapterConfig = MergeAdapter.Config.Builder()
+	private val adapterConfig = ConcatAdapter.Config.Builder()
 		.setIsolateViewTypes(true)
-		.setStableIdMode(MergeAdapter.Config.StableIdMode.SHARED_STABLE_IDS)
+		.setStableIdMode(ConcatAdapter.Config.StableIdMode.SHARED_STABLE_IDS)
 		.build()
 
 	private var adapter: MangaListAdapter? = null
@@ -181,17 +181,16 @@ abstract class MangaListSheet<E> : BaseBottomSheet(R.layout.sheet_list),
 		adapter?.listMode = mode
 		recyclerView.layoutManager = when (mode) {
 			ListMode.GRID -> {
-				val spanCount = UiUtils.resolveGridSpanCount(ctx)
-				GridLayoutManager(ctx, spanCount).apply {
+				GridLayoutManager(ctx, UiUtils.resolveGridSpanCount(ctx)).apply {
 					spanSizeLookup = object : GridLayoutManager.SpanSizeLookup() {
 						override fun getSpanSize(position: Int) = if (position < getItemsCount())
-							1 else spanCount
+							1 else this@apply.spanCount
 					}
 				}
 			}
 			else -> LinearLayoutManager(ctx)
 		}
-		recyclerView.adapter = MergeAdapter(adapterConfig, adapter, progressAdapter)
+		recyclerView.adapter = ConcatAdapter(adapterConfig, adapter, progressAdapter)
 		recyclerView.addItemDecoration(
 			when (mode) {
 				ListMode.LIST -> DividerItemDecoration(ctx, RecyclerView.VERTICAL)

app/src/main/java/org/koitharu/kotatsu/ui/list/local/LocalListPresenter.kt

@@ -13,7 +13,6 @@ import org.koin.core.get
 import org.koitharu.kotatsu.BuildConfig
 import org.koitharu.kotatsu.core.exceptions.UnsupportedFileException
 import org.koitharu.kotatsu.core.model.Manga
-import org.koitharu.kotatsu.core.model.MangaSource
 import org.koitharu.kotatsu.core.parser.LocalMangaRepository
 import org.koitharu.kotatsu.core.prefs.AppSettings
 import org.koitharu.kotatsu.domain.MangaProviderFactory
@@ -33,16 +32,17 @@ class LocalListPresenter : BasePresenter<MangaListView<File>>() {
 	private lateinit var repository: LocalMangaRepository
 
 	override fun onFirstViewAttach() {
-		repository = MangaProviderFactory.create(MangaSource.LOCAL) as LocalMangaRepository
+		repository = MangaProviderFactory.createLocal()
+
 		super.onFirstViewAttach()
 	}
 
 	fun loadList(offset: Int) {
-		if (offset != 0) {
-			viewState.onListAppended(emptyList())
-			return
-		}
 		presenterScope.launch {
+			if (offset != 0) {
+				viewState.onListAppended(emptyList())
+				return@launch
+			}
 			viewState.onLoadingStateChanged(true)
 			try {
 				val list = withContext(Dispatchers.IO) {

app/src/main/java/org/koitharu/kotatsu/ui/reader/ReaderActivity.kt

@@ -75,7 +75,7 @@ class ReaderActivity : BaseFullscreenActivity(), ReaderView, ChaptersDialog.OnCh
 			?: intent.getParcelableExtra<ReaderState>(EXTRA_STATE)
 					?: let {
 				Toast.makeText(this, R.string.error_occurred, Toast.LENGTH_SHORT).show()
-				finish()
+				finishAfterTransition()
 				return
 			}
 

app/src/main/java/org/koitharu/kotatsu/ui/search/SearchActivity.kt

@@ -19,7 +19,7 @@ class SearchActivity : BaseActivity(), SearchView.OnQueryTextListener {
 		super.onCreate(savedInstanceState)
 		setContentView(R.layout.activity_search)
 		source = intent.getParcelableExtra(EXTRA_SOURCE) ?: run {
-			finish()
+			finishAfterTransition()
 			return
 		}
 		val query = intent.getStringExtra(EXTRA_QUERY)

app/src/main/java/org/koitharu/kotatsu/ui/search/global/GlobalSearchActivity.kt

@@ -14,7 +14,7 @@ class GlobalSearchActivity : BaseActivity() {
 		val query = intent.getStringExtra(EXTRA_QUERY)
 
 		if (query == null) {
-			finish()
+			finishAfterTransition()
 			return
 		}
 

app/src/main/java/org/koitharu/kotatsu/ui/settings/AppUpdateChecker.kt

@@ -0,0 +1,128 @@
+package org.koitharu.kotatsu.ui.settings
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.net.Uri
+import androidx.activity.ComponentActivity
+import androidx.lifecycle.lifecycleScope
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import kotlinx.coroutines.CancellationException
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.koin.core.KoinComponent
+import org.koin.core.inject
+import org.koitharu.kotatsu.BuildConfig
+import org.koitharu.kotatsu.R
+import org.koitharu.kotatsu.core.github.AppVersion
+import org.koitharu.kotatsu.core.github.GithubRepository
+import org.koitharu.kotatsu.core.github.VersionId
+import org.koitharu.kotatsu.core.prefs.AppSettings
+import org.koitharu.kotatsu.utils.FileSizeUtils
+import org.koitharu.kotatsu.utils.ext.byte2HexFormatted
+import java.io.ByteArrayInputStream
+import java.io.InputStream
+import java.security.MessageDigest
+import java.security.NoSuchAlgorithmException
+import java.security.cert.CertificateEncodingException
+import java.security.cert.CertificateException
+import java.security.cert.CertificateFactory
+import java.security.cert.X509Certificate
+import java.util.concurrent.TimeUnit
+
+class AppUpdateChecker(private val activity: ComponentActivity) : KoinComponent {
+
+	private val settings by inject<AppSettings>()
+
+	operator fun invoke() {
+		if (isUpdateSupported(activity) && settings.appUpdateAuto && settings.appUpdate + PERIOD < System.currentTimeMillis()) {
+			launch()
+		}
+	}
+
+	private fun launch() = activity.lifecycleScope.launch {
+		try {
+			val repo = GithubRepository()
+			val version = withContext(Dispatchers.IO) {
+				repo.getLatestVersion()
+			}
+			val newVersionId = VersionId.parse(version.name)
+			val currentVersionId = VersionId.parse(BuildConfig.VERSION_NAME)
+			if (newVersionId > currentVersionId) {
+				showUpdateDialog(version)
+			}
+			settings.appUpdate = System.currentTimeMillis()
+		} catch (_: CancellationException) {
+		} catch (e: Throwable) {
+			if (BuildConfig.DEBUG) {
+				e.printStackTrace()
+			}
+		}
+	}
+
+	private fun showUpdateDialog(version: AppVersion) {
+		MaterialAlertDialogBuilder(activity)
+			.setTitle(R.string.app_update_available)
+			.setMessage(buildString {
+				append(activity.getString(R.string.new_version_s, version.name))
+				appendln()
+				append(activity.getString(R.string.size_s, FileSizeUtils.formatBytes(activity, version.apkSize)))
+				appendln()
+				appendln()
+				append(version.description)
+			})
+			.setPositiveButton(R.string.download) { _, _ ->
+				activity.startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(version.apkUrl)))
+			}
+			.setNegativeButton(R.string.close, null)
+			.create()
+			.show()
+	}
+
+	companion object {
+
+		private const val CERT_SHA1 = "2C:19:C7:E8:07:61:2B:8E:94:51:1B:FD:72:67:07:64:5D:C2:58:AE"
+		private val PERIOD = TimeUnit.HOURS.toMillis(6)
+
+		fun isUpdateSupported(context: Context): Boolean {
+			return getCertificateSHA1Fingerprint(context) == CERT_SHA1
+		}
+
+		@Suppress("DEPRECATION")
+		@SuppressLint("PackageManagerGetSignatures")
+		private fun getCertificateSHA1Fingerprint(context: Context): String? {
+			val packageInfo = try {
+				context.packageManager.getPackageInfo(
+					context.packageName,
+					PackageManager.GET_SIGNATURES
+				)
+			} catch (e: PackageManager.NameNotFoundException) {
+				e.printStackTrace()
+				return null
+			}
+			val signatures = packageInfo?.signatures
+			val cert: ByteArray = signatures?.firstOrNull()?.toByteArray() ?: return null
+			val input: InputStream = ByteArrayInputStream(cert)
+			val c = try {
+				val cf = CertificateFactory.getInstance("X509")
+				cf.generateCertificate(input) as X509Certificate
+			} catch (e: CertificateException) {
+				e.printStackTrace()
+				return null
+			}
+			return try {
+				val md: MessageDigest = MessageDigest.getInstance("SHA1")
+				val publicKey: ByteArray = md.digest(c.encoded)
+				publicKey.byte2HexFormatted()
+			} catch (e: NoSuchAlgorithmException) {
+				e.printStackTrace()
+				null
+			} catch (e: CertificateEncodingException) {
+				e.printStackTrace()
+				null
+			}
+		}
+	}
+}

app/src/main/java/org/koitharu/kotatsu/ui/settings/AppUpdateService.kt

@@ -1,178 +0,0 @@
-package org.koitharu.kotatsu.ui.settings
-
-import android.annotation.SuppressLint
-import android.app.NotificationChannel
-import android.app.NotificationManager
-import android.app.PendingIntent
-import android.content.Context
-import android.content.Intent
-import android.content.pm.PackageManager
-import android.graphics.BitmapFactory
-import android.net.Uri
-import android.os.Build
-import androidx.core.app.NotificationCompat
-import androidx.core.content.ContextCompat
-import kotlinx.coroutines.CancellationException
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
-import org.koitharu.kotatsu.BuildConfig
-import org.koitharu.kotatsu.R
-import org.koitharu.kotatsu.core.github.AppVersion
-import org.koitharu.kotatsu.core.github.GithubRepository
-import org.koitharu.kotatsu.core.github.VersionId
-import org.koitharu.kotatsu.core.prefs.AppSettings
-import org.koitharu.kotatsu.ui.common.BaseService
-import org.koitharu.kotatsu.utils.FileSizeUtils
-import org.koitharu.kotatsu.utils.ext.byte2HexFormatted
-import java.io.ByteArrayInputStream
-import java.io.InputStream
-import java.security.MessageDigest
-import java.security.NoSuchAlgorithmException
-import java.security.cert.CertificateEncodingException
-import java.security.cert.CertificateException
-import java.security.cert.CertificateFactory
-import java.security.cert.X509Certificate
-import java.util.concurrent.TimeUnit
-
-
-class AppUpdateService : BaseService() {
-
-	override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
-		launch(Dispatchers.IO) {
-			try {
-				val repo = GithubRepository()
-				val version = repo.getLatestVersion()
-				val newVersionId = VersionId.parse(version.name)
-				val currentVersionId = VersionId.parse(BuildConfig.VERSION_NAME)
-				if (newVersionId > currentVersionId) {
-					withContext(Dispatchers.Main) {
-						showUpdateNotification(version)
-					}
-				}
-				AppSettings(this@AppUpdateService).appUpdate = System.currentTimeMillis()
-			} catch (_: CancellationException) {
-			} catch (e: Throwable) {
-				if (BuildConfig.DEBUG) {
-					e.printStackTrace()
-				}
-			} finally {
-				withContext(Dispatchers.Main) {
-					stopSelf(startId)
-				}
-			}
-		}
-		return START_NOT_STICKY
-	}
-
-	private fun showUpdateNotification(newVersion: AppVersion) {
-		val manager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
-		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O
-			&& manager.getNotificationChannel(CHANNEL_ID) == null
-		) {
-			val channel = NotificationChannel(
-				CHANNEL_ID,
-				getString(R.string.application_update),
-				NotificationManager.IMPORTANCE_DEFAULT
-			)
-			manager.createNotificationChannel(channel)
-		}
-		val builder = NotificationCompat.Builder(this, CHANNEL_ID)
-		builder.setContentTitle(getString(R.string.app_update_available))
-		builder.setContentText(buildString {
-			append(newVersion.name)
-			append(" (")
-			append(FileSizeUtils.formatBytes(this@AppUpdateService, newVersion.apkSize))
-			append(')')
-		})
-		builder.setContentIntent(
-			PendingIntent.getActivity(
-				this,
-				NOTIFICATION_ID,
-				Intent(Intent.ACTION_VIEW, Uri.parse(newVersion.url)),
-				PendingIntent.FLAG_CANCEL_CURRENT
-			)
-		)
-		builder.addAction(
-			R.drawable.ic_download, getString(R.string.download),
-			PendingIntent.getActivity(
-				this,
-				NOTIFICATION_ID + 1,
-				Intent(Intent.ACTION_VIEW, Uri.parse(newVersion.apkUrl)),
-				PendingIntent.FLAG_CANCEL_CURRENT
-			)
-		)
-		builder.setSmallIcon(R.drawable.ic_stat_update)
-		builder.setAutoCancel(true)
-		builder.color = ContextCompat.getColor(this, R.color.blue_primary_dark)
-		builder.setLargeIcon(BitmapFactory.decodeResource(resources, R.mipmap.ic_launcher))
-		manager.notify(NOTIFICATION_ID, builder.build())
-	}
-
-	companion object {
-
-		private const val CERT_SHA1 = "2C:19:C7:E8:07:61:2B:8E:94:51:1B:FD:72:67:07:64:5D:C2:58:AE"
-		private const val NOTIFICATION_ID = 202
-		private const val CHANNEL_ID = "update"
-		private val PERIOD = TimeUnit.HOURS.toMillis(6)
-
-		fun isUpdateSupported(context: Context): Boolean {
-			return getCertificateSHA1Fingerprint(context) == CERT_SHA1
-		}
-
-		fun startIfRequired(context: Context) {
-			if (!isUpdateSupported(context)) {
-				return
-			}
-			val settings = AppSettings(context)
-			if (settings.appUpdateAuto) {
-				val lastUpdate = settings.appUpdate
-				if (lastUpdate + PERIOD < System.currentTimeMillis()) {
-					start(context)
-				}
-			}
-		}
-
-		private fun start(context: Context) {
-			try {
-				context.startService(Intent(context, AppUpdateService::class.java))
-			} catch (_: IllegalStateException) {
-			}
-		}
-
-		@Suppress("DEPRECATION")
-		@SuppressLint("PackageManagerGetSignatures")
-		private fun getCertificateSHA1Fingerprint(context: Context): String? {
-			val packageInfo = try {
-				context.packageManager.getPackageInfo(
-					context.packageName,
-					PackageManager.GET_SIGNATURES
-				)
-			} catch (e: PackageManager.NameNotFoundException) {
-				e.printStackTrace()
-				return null
-			}
-			val signatures = packageInfo?.signatures
-			val cert: ByteArray = signatures?.firstOrNull()?.toByteArray() ?: return null
-			val input: InputStream = ByteArrayInputStream(cert)
-			val c = try {
-				val cf = CertificateFactory.getInstance("X509")
-				cf.generateCertificate(input) as X509Certificate
-			} catch (e: CertificateException) {
-				e.printStackTrace()
-				return null
-			}
-			return try {
-				val md: MessageDigest = MessageDigest.getInstance("SHA1")
-				val publicKey: ByteArray = md.digest(c.encoded)
-				publicKey.byte2HexFormatted()
-			} catch (e: NoSuchAlgorithmException) {
-				e.printStackTrace()
-				null
-			} catch (e: CertificateEncodingException) {
-				e.printStackTrace()
-				null
-			}
-		}
-	}
-}

app/src/main/java/org/koitharu/kotatsu/ui/settings/HistorySettingsFragment.kt

@@ -9,6 +9,7 @@ import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
 import org.koitharu.kotatsu.R
 import org.koitharu.kotatsu.core.local.Cache
+import org.koitharu.kotatsu.domain.tracking.TrackingRepository
 import org.koitharu.kotatsu.ui.common.BasePreferenceFragment
 import org.koitharu.kotatsu.ui.search.MangaSuggestionsProvider
 import org.koitharu.kotatsu.utils.CacheUtils
@@ -17,6 +18,10 @@ import org.koitharu.kotatsu.utils.ext.getDisplayMessage
 
 class HistorySettingsFragment : BasePreferenceFragment(R.string.history_and_cache) {
 
+	private val trackerRepo by lazy {
+		TrackingRepository()
+	}
+
 	override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
 		addPreferencesFromResource(R.xml.pref_history)
 		findPreference<Preference>(R.string.key_pages_cache_clear)?.let { pref ->
@@ -39,10 +44,16 @@ class HistorySettingsFragment : BasePreferenceFragment(R.string.history_and_cach
 			val items = MangaSuggestionsProvider.getItemsCount(p.context)
 			p.summary = p.context.resources.getQuantityString(R.plurals.items, items, items)
 		}
+		findPreference<Preference>(R.string.key_updates_feed_clear)?.let { p ->
+			lifecycleScope.launchWhenResumed {
+				val items = trackerRepo.count()
+				p.summary = p.context.resources.getQuantityString(R.plurals.items, items, items)
+			}
+		}
 	}
 
 	override fun onPreferenceTreeClick(preference: Preference): Boolean {
-		return when(preference.key) {
+		return when (preference.key) {
 			getString(R.string.key_pages_cache_clear) -> {
 				clearCache(preference, Cache.PAGES)
 				true
@@ -53,8 +64,26 @@ class HistorySettingsFragment : BasePreferenceFragment(R.string.history_and_cach
 			}
 			getString(R.string.key_search_history_clear) -> {
 				MangaSuggestionsProvider.clearHistory(preference.context)
-				preference.context.resources.getQuantityString(R.plurals.items, 0, 0)
-				Snackbar.make(view ?: return true, R.string.search_history_cleared, Snackbar.LENGTH_SHORT).show()
+				preference.summary = preference.context.resources
+					.getQuantityString(R.plurals.items, 0, 0)
+				Snackbar.make(
+					view ?: return true,
+					R.string.search_history_cleared,
+					Snackbar.LENGTH_SHORT
+				).show()
+				true
+			}
+			getString(R.string.key_updates_feed_clear) -> {
+				lifecycleScope.launch {
+					trackerRepo.clearLogs()
+					preference.summary = preference.context.resources
+						.getQuantityString(R.plurals.items, 0, 0)
+					Snackbar.make(
+						view ?: return@launch,
+						R.string.updates_feed_cleared,
+						Snackbar.LENGTH_SHORT
+					).show()
+				}
 				true
 			}
 			else -> super.onPreferenceTreeClick(preference)

app/src/main/java/org/koitharu/kotatsu/ui/settings/MainSettingsFragment.kt

@@ -42,7 +42,7 @@ class MainSettingsFragment : BasePreferenceFragment(R.string.settings),
 		findPreference<MultiSelectListPreference>(R.string.key_reader_switchers)?.summaryProvider =
 			MultiSummaryProvider(R.string.gestures_only)
 		findPreference<Preference>(R.string.key_app_update_auto)?.run {
-			isVisible = AppUpdateService.isUpdateSupported(context)
+			isVisible = AppUpdateChecker.isUpdateSupported(context)
 		}
 		findPreference<Preference>(R.string.key_local_storage)?.run {
 			summary = settings.getStorageDir(context)?.getStorageName(context)

app/src/main/java/org/koitharu/kotatsu/ui/tracker/TrackWorker.kt

@@ -118,6 +118,7 @@ class TrackWorker(context: Context, workerParams: WorkerParameters) :
 			}
 			success++
 		}
+		repo.cleanup()
 		if (success == 0) {
 			Result.retry()
 		} else {

app/src/main/java/org/koitharu/kotatsu/ui/widget/shelf/ShelfConfigActivity.kt

@@ -48,7 +48,7 @@ class ShelfConfigActivity : BaseActivity(), FavouriteCategoriesView,
 			AppWidgetManager.INVALID_APPWIDGET_ID
 		) ?: AppWidgetManager.INVALID_APPWIDGET_ID
 		if (appWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
-			finish()
+			finishAfterTransition()
 			return
 		}
 		config = AppWidgetConfig.getInstance(this, appWidgetId)

app/src/main/java/org/koitharu/kotatsu/utils/ext/AndroidExt.kt

@@ -0,0 +1,22 @@
+package org.koitharu.kotatsu.utils.ext
+
+import android.net.ConnectivityManager
+import android.net.Network
+import android.net.NetworkRequest
+import kotlinx.coroutines.suspendCancellableCoroutine
+import kotlin.coroutines.resume
+
+suspend fun ConnectivityManager.waitForNetwork(): Network {
+	val request = NetworkRequest.Builder().build()
+	return suspendCancellableCoroutine<Network> { cont ->
+		val callback = object : ConnectivityManager.NetworkCallback() {
+			override fun onAvailable(network: Network) {
+				cont.resume(network)
+			}
+		}
+		registerNetworkCallback(request, callback)
+		cont.invokeOnCancellation {
+			unregisterNetworkCallback(callback)
+		}
+	}
+}

app/src/main/res/values-ru/strings.xml

@@ -137,4 +137,9 @@
 	<string name="text_feed_holder">Здесь будут отображаться обновления манги, которую Вы читаете</string>
 	<string name="search_results">Результаты поиска</string>
 	<string name="related">Похожие</string>
+	<string name="new_version_s">Новая версия: %s</string>
+	<string name="size_s">Размер: %s</string>
+	<string name="waiting_for_network">Ожидание подключения…</string>
+	<string name="clear_updates_feed">Очистить ленту обновлений</string>
+	<string name="updates_feed_cleared">Лента обновлений очищена</string>
 </resources>

app/src/main/res/values/constants.xml

@@ -9,6 +9,7 @@
 	<string name="key_pages_cache_clear">pages_cache_clear</string>
 	<string name="key_thumbs_cache_clear">thumbs_cache_clear</string>
 	<string name="key_search_history_clear">search_history_clear</string>
+	<string name="key_updates_feed_clear">updates_feed_clear</string>
 	<string name="key_grid_size">grid_size</string>
 	<string name="key_remote_sources">remote_sources</string>
 	<string name="key_local_storage">local_storage</string>

app/src/main/res/values/strings.xml

@@ -138,4 +138,9 @@
 	<string name="text_feed_holder">Here you will see the new chapters of the manga you are reading</string>
 	<string name="search_results">Search results</string>
 	<string name="related">Related</string>
+	<string name="new_version_s">New version: %s</string>
+	<string name="size_s">Size: %s</string>
+	<string name="waiting_for_network">Waiting for network…</string>
+	<string name="clear_updates_feed">Clear updates feed</string>
+	<string name="updates_feed_cleared">Updates feed cleared</string>
 </resources>

app/src/main/res/xml/pref_history.xml

@@ -9,6 +9,12 @@
 		android:title="@string/clear_search_history"
 		app:iconSpaceReserved="false" />
 
+	<Preference
+		android:key="@string/key_updates_feed_clear"
+		android:persistent="false"
+		android:title="@string/clear_updates_feed"
+		app:iconSpaceReserved="false" />
+
 	<PreferenceCategory
 		app:iconSpaceReserved="false"
 		android:title="@string/cache">

build.gradle

@@ -6,7 +6,7 @@ buildscript {
 		jcenter()
 	}
 	dependencies {
-		classpath 'com.android.tools.build:gradle:4.1.0-alpha10'
+		classpath 'com.android.tools.build:gradle:4.2.0-alpha02'
 		classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
 		// NOTE: Do not place your application dependencies here; they belong

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Sat May 30 09:45:56 EEST 2020
+#Sat Jun 20 11:05:53 EEST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-milestone-1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip