Merge pull request #4372 from kiwix/Fixes#4371

Migrated the `CustomDownloadFragment` to Jetpack Compose.

core/src/main/java/org/kiwix/kiwixmobile/core/main/reader/CoreReaderFragment.kt

@@ -1769,7 +1769,7 @@ abstract class CoreReaderFragment :
   }
 
   // opens home screen when user closes all tabs
-  protected fun showNoBookOpenViews() {
+  open fun showNoBookOpenViews() {
     readerScreenState.update { copy(isNoBookOpenInReader = true) }
   }
 

core/src/main/java/org/kiwix/kiwixmobile/core/utils/ComposeDimens.kt

@@ -195,4 +195,8 @@ object ComposeDimens {
 
   // MainActivity dimens
   val NAVIGATION_DRAWER_WIDTH = 280.dp
+
+  // Custom download screen dimens
+  val CUSTOM_DOWNLOAD_LAYOUT_TOP_MARGIN = 100.dp
+  val CUSTOM_DOWNLOAD_PROGRESS_BAR_WIDTH = 200.dp
 }

core/src/main/res/layout/drawer_right.xml

@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.recyclerview.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
-  android:id="@+id/right_drawer_list"
-  android:layout_width="match_parent"
-  android:layout_height="match_parent"
-  android:clickable="true"
-  android:clipToPadding="false"
-  android:focusable="true" />

core/src/main/res/layout/nav_main.xml

@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?><!--
-  ~ Kiwix Android
-  ~ Copyright (c) 2020 Kiwix <android.kiwix.org>
-  ~ This program is free software: you can redistribute it and/or modify
-  ~ it under the terms of the GNU General Public License as published by
-  ~ the Free Software Foundation, either version 3 of the License, or
-  ~ (at your option) any later version.
-  ~
-  ~ This program is distributed in the hope that it will be useful,
-  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
-  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  ~ GNU General Public License for more details.
-  ~
-  ~ You should have received a copy of the GNU General Public License
-  ~ along with this program. If not, see <http://www.gnu.org/licenses/>.
-  ~
-  -->
-
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-  android:layout_width="match_parent"
-  android:layout_height="match_parent"
-  xmlns:tools="http://schemas.android.com/tools">
-
-  <ImageView
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    tools:ignore="ContentDescription"
-    android:src="@drawable/ic_home_kiwix_banner" />
-</LinearLayout>

core/src/main/res/layout/section_list.xml

@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
-  xmlns:tools="http://schemas.android.com/tools"
-  android:layout_width="match_parent"
-  android:layout_height="@dimen/section_list_height"
-  android:background="?android:attr/selectableItemBackground"
-  android:clickable="false"
-  android:focusable="false"
-  android:gravity="center_vertical"
-  android:orientation="horizontal"
-  tools:ignore="Overdraw">
-
-  <TextView
-    android:id="@+id/titleText"
-    android:layout_width="match_parent"
-    android:layout_height="wrap_content"
-    android:layout_centerVertical="true"
-    android:layout_marginStart="@dimen/title_text_margin"
-    android:layout_marginEnd="@dimen/title_text_margin"
-    android:ellipsize="end"
-    android:fontFamily="sans-serif-light"
-    android:gravity="center_vertical"
-    android:maxLines="1"
-    android:minHeight="?listPreferredItemHeightSmall"
-    android:paddingStart="@dimen/title_text_padding"
-    android:paddingEnd="0dp"
-    android:textAppearance="?textAppearanceBody1"
-    tools:text="Some text" />
-
-</RelativeLayout>

custom/src/main/java/org/kiwix/kiwixmobile/custom/download/CustomDownloadFragment.kt

@@ -19,39 +19,33 @@
 package org.kiwix.kiwixmobile.custom.download
 
 import android.Manifest.permission.POST_NOTIFICATIONS
-import android.content.Context
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.ui.platform.ComposeView
 import androidx.core.app.ActivityCompat
 import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.lifecycleScope
 import kotlinx.coroutines.launch
-import org.kiwix.kiwixmobile.core.R
 import org.kiwix.kiwixmobile.core.base.BaseActivity
 import org.kiwix.kiwixmobile.core.base.BaseFragment
 import org.kiwix.kiwixmobile.core.base.FragmentActivityExtensions
-import org.kiwix.kiwixmobile.core.data.remote.isAuthenticationUrl
-import org.kiwix.kiwixmobile.core.downloader.model.DownloadItem
-import org.kiwix.kiwixmobile.core.downloader.model.DownloadState
 import org.kiwix.kiwixmobile.core.extensions.ActivityExtensions.hasNotificationPermission
 import org.kiwix.kiwixmobile.core.extensions.ActivityExtensions.requestNotificationPermission
-import org.kiwix.kiwixmobile.core.extensions.setDistinctDisplayedChild
+import org.kiwix.kiwixmobile.core.extensions.update
 import org.kiwix.kiwixmobile.core.extensions.viewModel
 import org.kiwix.kiwixmobile.core.main.CoreMainActivity
 import org.kiwix.kiwixmobile.core.navigateToAppSettings
 import org.kiwix.kiwixmobile.core.utils.SharedPreferenceUtil
+import org.kiwix.kiwixmobile.core.utils.dialog.AlertDialogShower
+import org.kiwix.kiwixmobile.core.utils.dialog.DialogHost
 import org.kiwix.kiwixmobile.core.utils.dialog.DialogShower
 import org.kiwix.kiwixmobile.core.utils.dialog.KiwixDialog
 import org.kiwix.kiwixmobile.custom.customActivityComponent
-import org.kiwix.kiwixmobile.custom.databinding.FragmentCustomDownloadBinding
 import org.kiwix.kiwixmobile.custom.download.Action.ClickedDownload
 import org.kiwix.kiwixmobile.custom.download.Action.ClickedRetry
-import org.kiwix.kiwixmobile.custom.download.State.DownloadComplete
-import org.kiwix.kiwixmobile.custom.download.State.DownloadFailed
-import org.kiwix.kiwixmobile.custom.download.State.DownloadInProgress
-import org.kiwix.kiwixmobile.custom.download.State.DownloadRequired
 import javax.inject.Inject
 
 class CustomDownloadFragment : BaseFragment(), FragmentActivityExtensions {
@@ -68,8 +62,8 @@ class CustomDownloadFragment : BaseFragment(), FragmentActivityExtensions {
   var sharedPreferenceUtil: SharedPreferenceUtil? = null
 
   @Inject lateinit var viewModelFactory: ViewModelProvider.Factory
-
+  private var composeView: ComposeView? = null
-  private var fragmentCustomDownloadBinding: FragmentCustomDownloadBinding? = null
+  private var downloadState = mutableStateOf<State>(State.DownloadRequired)
   override fun inject(baseActivity: BaseActivity) {
     baseActivity.customActivityComponent.inject(this)
   }
@@ -80,12 +74,20 @@ class CustomDownloadFragment : BaseFragment(), FragmentActivityExtensions {
     savedInstanceState: Bundle?
   ): View? {
     super.onCreate(savedInstanceState)
-    fragmentCustomDownloadBinding =
+    composeView = ComposeView(requireContext()).apply {
-      FragmentCustomDownloadBinding.inflate(inflater, container, false)
+      setContent {
+        CustomDownloadScreen(
+          state = downloadState.value,
+          onDownloadClick = { downloadButtonClick() },
+          onRetryClick = { retryButtonClick() }
+        )
+        DialogHost(alertDialogShower as AlertDialogShower)
+      }
+    }
     val activity = requireActivity() as CoreMainActivity
     viewLifecycleOwner.lifecycleScope.launch {
       downloadViewModel.state.collect { state ->
-        render(state)
+        downloadState.update { state }
       }
     }
 
@@ -95,28 +97,24 @@ class CustomDownloadFragment : BaseFragment(), FragmentActivityExtensions {
           effect.invokeWith(activity)
         }
     }
-    return fragmentCustomDownloadBinding?.root
+    return composeView
   }
 
-  override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+  private fun downloadButtonClick() {
-    super.onViewCreated(view, savedInstanceState)
-    fragmentCustomDownloadBinding?.apply {
-      customDownloadRequired.cdDownloadButton.setOnClickListener {
     if (requireActivity().hasNotificationPermission(sharedPreferenceUtil)) {
       performAction(ClickedDownload)
     } else {
       requestNotificationPermission()
     }
   }
-      customDownloadError.cdRetryButton.setOnClickListener {
+
+  private fun retryButtonClick() {
     if (requireActivity().hasNotificationPermission(sharedPreferenceUtil)) {
       performAction(ClickedRetry)
     } else {
       requestNotificationPermission()
     }
   }
-    }
-  }
 
   private fun performAction(action: Action) {
     viewLifecycleOwner.lifecycleScope.launch {
@@ -144,63 +142,9 @@ class CustomDownloadFragment : BaseFragment(), FragmentActivityExtensions {
     activity?.finish()
   }
 
-  private fun render(state: State): Unit? {
-    return when (state) {
-      DownloadRequired ->
-        fragmentCustomDownloadBinding?.cdViewAnimator?.setDistinctDisplayedChild(0)
-
-      is DownloadInProgress -> {
-        fragmentCustomDownloadBinding?.cdViewAnimator?.setDistinctDisplayedChild(1)
-        showDownloadingProgress(state.downloads[0])
-      }
-
-      is DownloadFailed -> {
-        fragmentCustomDownloadBinding?.cdViewAnimator?.setDistinctDisplayedChild(2)
-        val errorMessage = context?.let { context ->
-          if (state.downloadState.zimUrl?.isAuthenticationUrl == false) {
-            return@let getErrorMessageFromDownloadState(state.downloadState, context)
-          }
-
-          val defaultErrorMessage = getErrorMessageFromDownloadState(state.downloadState, context)
-          // Check if `REQUEST_NOT_SUCCESSFUL` indicates an unsuccessful response from the server.
-          // If the server does not respond to the URL, we will display a custom message to the user.
-          if (defaultErrorMessage == context.getString(
-              R.string.failed_state,
-              "REQUEST_NOT_SUCCESSFUL"
-            )
-          ) {
-            context.getString(
-              R.string.failed_state,
-              context.getString(R.string.custom_download_error_message_for_authentication_failed)
-            )
-          } else {
-            defaultErrorMessage
-          }
-        }
-        fragmentCustomDownloadBinding?.customDownloadError?.cdErrorText?.text = errorMessage
-      }
-
-      DownloadComplete ->
-        fragmentCustomDownloadBinding?.cdViewAnimator?.setDistinctDisplayedChild(3)
-    }
-  }
-
-  private fun getErrorMessageFromDownloadState(
-    downloadState: DownloadState,
-    context: Context
-  ): String = "${downloadState.toReadableState(context)}"
-
-  private fun showDownloadingProgress(downloadItem: DownloadItem) {
-    fragmentCustomDownloadBinding?.customDownloadInProgress?.apply {
-      cdDownloadState.text = downloadItem.readableEta
-      cdEta.text = context?.let(downloadItem.downloadState::toReadableState)
-      cdProgress.progress = downloadItem.progress
-    }
-  }
-
   override fun onDestroyView() {
     super.onDestroyView()
-    fragmentCustomDownloadBinding?.root?.removeAllViews()
+    composeView?.disposeComposition()
-    fragmentCustomDownloadBinding = null
+    composeView = null
   }
 }

custom/src/main/java/org/kiwix/kiwixmobile/custom/download/CustomDownloadScreen.kt

@@ -0,0 +1,203 @@
+/*
+ * Kiwix Android
+ * Copyright (c) 2025 Kiwix <android.kiwix.org>
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package org.kiwix.kiwixmobile.custom.download
+
+import android.content.Context
+import androidx.compose.animation.Crossfade
+import androidx.compose.animation.animateContentSize
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.layout.wrapContentSize
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextAlign
+import org.kiwix.kiwixmobile.core.R.string
+import org.kiwix.kiwixmobile.core.data.remote.isAuthenticationUrl
+import org.kiwix.kiwixmobile.core.downloader.model.DownloadItem
+import org.kiwix.kiwixmobile.core.downloader.model.DownloadState
+import org.kiwix.kiwixmobile.core.ui.components.ContentLoadingProgressBar
+import org.kiwix.kiwixmobile.core.ui.components.KiwixButton
+import org.kiwix.kiwixmobile.core.ui.components.ProgressBarStyle
+import org.kiwix.kiwixmobile.core.utils.ComposeDimens.CUSTOM_DOWNLOAD_LAYOUT_TOP_MARGIN
+import org.kiwix.kiwixmobile.core.utils.ComposeDimens.CUSTOM_DOWNLOAD_PROGRESS_BAR_WIDTH
+import org.kiwix.kiwixmobile.core.utils.ComposeDimens.FIVE_DP
+import org.kiwix.kiwixmobile.core.utils.ComposeDimens.SIX_DP
+import org.kiwix.kiwixmobile.core.utils.ComposeDimens.TWENTY_DP
+import org.kiwix.kiwixmobile.custom.R
+import org.kiwix.kiwixmobile.custom.download.State.DownloadComplete
+import org.kiwix.kiwixmobile.custom.download.State.DownloadFailed
+import org.kiwix.kiwixmobile.custom.download.State.DownloadInProgress
+import org.kiwix.kiwixmobile.custom.download.State.DownloadRequired
+
+@Composable
+fun CustomDownloadScreen(
+  state: State,
+  onDownloadClick: () -> Unit,
+  onRetryClick: () -> Unit
+) {
+  Box(
+    modifier = Modifier
+      .fillMaxSize()
+      .animateContentSize()
+  ) {
+    Column(
+      modifier = Modifier
+        .fillMaxSize()
+        .padding(top = CUSTOM_DOWNLOAD_LAYOUT_TOP_MARGIN),
+      horizontalAlignment = Alignment.CenterHorizontally
+    ) {
+      Image(
+        painter = painterResource(id = R.mipmap.ic_launcher_foreground),
+        contentDescription = stringResource(id = R.string.app_name),
+        modifier = Modifier
+          .wrapContentSize()
+          .align(Alignment.CenterHorizontally)
+      )
+      Box(
+        modifier = Modifier
+          .weight(1f)
+          .fillMaxWidth(),
+        contentAlignment = Alignment.Center
+      ) {
+        Crossfade(targetState = state, label = "download-state") { currentState ->
+          when (currentState) {
+            is DownloadRequired -> DownloadRequiredView(onDownloadClick)
+            is DownloadInProgress -> DownloadInProgressView(currentState.downloads[0])
+            is DownloadFailed -> DownloadErrorView(onRetryClick, currentState)
+            is DownloadComplete -> DownloadCompleteView()
+          }
+        }
+      }
+    }
+  }
+}
+
+@Composable
+private fun DownloadRequiredView(onDownloadClick: () -> Unit) {
+  Column(
+    modifier = Modifier.wrapContentSize(Alignment.Center),
+    horizontalAlignment = Alignment.CenterHorizontally
+  ) {
+    Text(
+      text = stringResource(id = R.string.invalid_installation),
+      textAlign = TextAlign.Center
+    )
+    Spacer(modifier = Modifier.height(TWENTY_DP))
+    KiwixButton(
+      clickListener = onDownloadClick,
+      buttonText = stringResource(id = string.download)
+    )
+  }
+}
+
+@Composable
+private fun DownloadInProgressView(downloadItem: DownloadItem) {
+  Column(
+    modifier = Modifier.wrapContentSize(Alignment.Center),
+    horizontalAlignment = Alignment.CenterHorizontally
+  ) {
+    Text(text = downloadItem.readableEta.toString())
+
+    Spacer(modifier = Modifier.height(TWENTY_DP))
+
+    Row(verticalAlignment = Alignment.CenterVertically) {
+      ContentLoadingProgressBar(
+        progress = downloadItem.progress,
+        modifier = Modifier
+          .width(CUSTOM_DOWNLOAD_PROGRESS_BAR_WIDTH)
+          .height(SIX_DP),
+        progressBarStyle = ProgressBarStyle.HORIZONTAL
+      )
+      Spacer(modifier = Modifier.width(FIVE_DP))
+      Text(text = downloadItem.downloadState.toReadableState(LocalContext.current).toString())
+    }
+  }
+}
+
+@Composable
+private fun DownloadErrorView(onRetryClick: () -> Unit, downloadFailed: DownloadFailed) {
+  val context = LocalContext.current
+  Column(
+    modifier = Modifier.wrapContentSize(Alignment.Center),
+    horizontalAlignment = Alignment.CenterHorizontally
+  ) {
+    Text(
+      text = getActualErrorMessage(downloadFailed, context),
+      textAlign = TextAlign.Center
+    )
+    Spacer(modifier = Modifier.height(TWENTY_DP))
+    KiwixButton(
+      clickListener = onRetryClick,
+      buttonText = stringResource(id = R.string.retry)
+    )
+  }
+}
+
+private fun getActualErrorMessage(downloadFailed: DownloadFailed, context: Context): String {
+  if (downloadFailed.downloadState.zimUrl?.isAuthenticationUrl == false) {
+    return getErrorMessageFromDownloadState(downloadFailed.downloadState, context)
+  }
+
+  val defaultErrorMessage = getErrorMessageFromDownloadState(downloadFailed.downloadState, context)
+  // Check if `REQUEST_NOT_SUCCESSFUL` indicates an unsuccessful response from the server.
+  // If the server does not respond to the URL, we will display a custom message to the user.
+  return if (defaultErrorMessage == context.getString(
+      string.failed_state,
+      "REQUEST_NOT_SUCCESSFUL"
+    )
+  ) {
+    context.getString(
+      string.failed_state,
+      context.getString(string.custom_download_error_message_for_authentication_failed)
+    )
+  } else {
+    defaultErrorMessage
+  }
+}
+
+private fun getErrorMessageFromDownloadState(
+  downloadState: DownloadState,
+  context: Context
+): String = "${downloadState.toReadableState(context)}"
+
+@Composable
+private fun DownloadCompleteView() {
+  Box(
+    modifier = Modifier.wrapContentSize(Alignment.Center),
+    contentAlignment = Alignment.TopCenter
+  ) {
+    Text(
+      text = stringResource(id = string.complete),
+      textAlign = TextAlign.Center
+    )
+  }
+}

custom/src/main/java/org/kiwix/kiwixmobile/custom/main/CustomReaderFragment.kt

@@ -20,6 +20,8 @@ package org.kiwix.kiwixmobile.custom.main
 
 import android.app.Dialog
 import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
 import android.view.Menu
 import android.view.View
 import androidx.appcompat.app.AppCompatActivity
@@ -53,6 +55,8 @@ import java.io.File
 import java.util.Locale
 import javax.inject.Inject
 
+const val OPENING_DOWNLOAD_SCREEN_DELAY = 300L
+
 class CustomReaderFragment : CoreReaderFragment() {
   override fun inject(baseActivity: BaseActivity) {
     baseActivity.customActivityComponent.inject(this)
@@ -288,6 +292,7 @@ class CustomReaderFragment : CoreReaderFragment() {
       },
       onNoFilesFound = {
         if (sharedPreferenceUtil?.prefIsTest == false) {
+          Handler(Looper.getMainLooper()).postDelayed({
             val navOptions = NavOptions.Builder()
               .setPopUpTo(CustomDestination.Reader.route, true)
               .build()
@@ -295,6 +300,7 @@ class CustomReaderFragment : CoreReaderFragment() {
               CustomDestination.Downloads.route,
               navOptions
             )
+          }, OPENING_DOWNLOAD_SCREEN_DELAY)
         }
       }
     )
@@ -389,6 +395,10 @@ class CustomReaderFragment : CoreReaderFragment() {
     newMainPageTab()
   }
 
+  override fun showNoBookOpenViews() {
+    readerScreenState.update { copy(isNoBookOpenInReader = false) }
+  }
+
   /**
    * Overrides the method to show the donation popup. When the "Support url" is disabled
    * in a custom app, this function stop to show the donationPopup.

custom/src/main/res/layout/fragment_custom_download.xml

@@ -1,47 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-  xmlns:app="http://schemas.android.com/apk/res-auto"
-  android:layout_width="match_parent"
-  android:layout_height="match_parent"
-  android:animateLayoutChanges="true">
-
-  <ImageView
-    android:id="@+id/cd_icon"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:layout_marginTop="100dp"
-    android:contentDescription="@string/app_name"
-    android:src="@mipmap/ic_launcher_foreground"
-    app:layout_constraintEnd_toEndOf="parent"
-    app:layout_constraintStart_toStartOf="parent"
-    app:layout_constraintTop_toTopOf="parent" />
-
-  <ViewAnimator
-    android:id="@+id/cd_view_animator"
-    android:layout_width="0dp"
-    android:layout_height="0dp"
-    android:inAnimation="@android:anim/fade_in"
-    android:outAnimation="@android:anim/fade_out"
-    app:layout_constraintBottom_toBottomOf="parent"
-    app:layout_constraintEnd_toEndOf="parent"
-    app:layout_constraintStart_toStartOf="parent"
-    app:layout_constraintTop_toBottomOf="@+id/cd_icon">
-
-    <include
-      android:id="@+id/custom_download_required"
-      layout="@layout/layout_custom_download_required" />
-
-    <include
-      android:id="@+id/custom_download_in_progress"
-      layout="@layout/layout_custom_download_in_progress" />
-
-    <include
-      android:id="@+id/custom_download_error"
-      layout="@layout/layout_custom_download_error" />
-
-    <include
-      android:id="@+id/custom_download_complete"
-      layout="@layout/layout_custom_download_complete" />
-  </ViewAnimator>
-</androidx.constraintlayout.widget.ConstraintLayout>

custom/src/main/res/layout/layout_custom_download_complete.xml

@@ -1,20 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-  xmlns:app="http://schemas.android.com/apk/res-auto"
-  xmlns:tools="http://schemas.android.com/tools"
-  android:layout_width="match_parent"
-  android:layout_height="match_parent"
-  tools:showIn="@layout/fragment_custom_download">
-
-  <TextView
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:gravity="center"
-    android:text="@string/complete"
-    app:layout_constraintBottom_toBottomOf="parent"
-    app:layout_constraintStart_toStartOf="parent"
-    app:layout_constraintEnd_toEndOf="parent"
-    app:layout_constraintTop_toTopOf="parent"
-    app:layout_constraintVertical_bias=".3" />
-</androidx.constraintlayout.widget.ConstraintLayout>

custom/src/main/res/layout/layout_custom_download_error.xml

@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-  xmlns:app="http://schemas.android.com/apk/res-auto"
-  xmlns:tools="http://schemas.android.com/tools"
-  android:layout_width="match_parent"
-  android:layout_height="match_parent"
-  tools:showIn="@layout/fragment_custom_download">
-
-  <TextView
-    android:id="@+id/cd_error_text"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:gravity="center"
-    app:layout_constraintBottom_toBottomOf="parent"
-    app:layout_constraintStart_toStartOf="parent"
-    app:layout_constraintEnd_toEndOf="parent"
-    app:layout_constraintTop_toTopOf="parent"
-    app:layout_constraintVertical_bias=".3" />
-
-  <Button
-    android:id="@+id/cd_retry_button"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:layout_marginTop="20dp"
-    android:text="@string/retry"
-    app:layout_constraintStart_toStartOf="parent"
-    app:layout_constraintEnd_toEndOf="parent"
-    app:layout_constraintTop_toBottomOf="@+id/cd_error_text" />
-</androidx.constraintlayout.widget.ConstraintLayout>

custom/src/main/res/layout/layout_custom_download_in_progress.xml

@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-  xmlns:app="http://schemas.android.com/apk/res-auto"
-  android:layout_width="match_parent"
-  android:layout_height="match_parent">
-
-  <TextView
-    android:id="@+id/cd_download_state"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    app:layout_constraintBottom_toTopOf="@id/cd_progress"
-    app:layout_constraintStart_toStartOf="@+id/cd_progress"
-    app:layout_constraintEnd_toEndOf="@+id/cd_progress" />
-
-  <ProgressBar
-    android:id="@+id/cd_progress"
-    style="?android:progressBarStyleHorizontal"
-    android:layout_width="200dp"
-    android:layout_height="wrap_content"
-    android:max="100"
-    app:layout_constraintBottom_toBottomOf="parent"
-    app:layout_constraintStart_toStartOf="parent"
-    app:layout_constraintEnd_toEndOf="parent"
-    app:layout_constraintTop_toTopOf="parent"
-    app:layout_constraintVertical_bias=".3" />
-
-  <TextView
-    android:id="@+id/cd_eta"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:layout_marginStart="5dp"
-    app:layout_constraintBottom_toBottomOf="@id/cd_progress"
-    app:layout_constraintStart_toEndOf="@id/cd_progress"
-    app:layout_constraintTop_toTopOf="@id/cd_progress" />
-</androidx.constraintlayout.widget.ConstraintLayout>

custom/src/main/res/layout/layout_custom_download_required.xml

@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-  xmlns:app="http://schemas.android.com/apk/res-auto"
-  xmlns:tools="http://schemas.android.com/tools"
-  android:layout_width="match_parent"
-  android:layout_height="match_parent"
-  tools:showIn="@layout/fragment_custom_download">
-
-  <TextView
-    android:id="@+id/cd_text"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:gravity="center"
-    android:text="@string/invalid_installation"
-    app:layout_constraintBottom_toBottomOf="parent"
-    app:layout_constraintStart_toStartOf="parent"
-    app:layout_constraintEnd_toEndOf="parent"
-    app:layout_constraintTop_toTopOf="parent"
-    app:layout_constraintVertical_bias=".3" />
-
-  <Button
-    android:id="@+id/cd_download_button"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:layout_marginTop="20dp"
-    android:text="@string/download"
-    app:layout_constraintStart_toStartOf="parent"
-    app:layout_constraintEnd_toEndOf="parent"
-    app:layout_constraintTop_toBottomOf="@+id/cd_text" />
-
-</androidx.constraintlayout.widget.ConstraintLayout>