Android: Convert TvMainActivity to Kotlin

2 files changed, 370 insertions, 418 deletions

diff --git a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/TvMainActivity.java b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/TvMainActivity.java
deleted file mode 100644
index 2da1b8591d..0000000000
--- a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/TvMainActivity.java
+++ /dev/null
@@ -1,418 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-package org.dolphinemu.dolphinemu.ui.main;
-
-import android.content.Intent;
-import android.content.pm.PackageManager;
-import android.net.Uri;
-import android.os.Bundle;
-
-import androidx.annotation.NonNull;
-import androidx.core.content.ContextCompat;
-import androidx.core.splashscreen.SplashScreen;
-import androidx.fragment.app.FragmentActivity;
-import androidx.fragment.app.FragmentManager;
-import androidx.leanback.app.BrowseSupportFragment;
-import androidx.leanback.widget.ArrayObjectAdapter;
-import androidx.leanback.widget.HeaderItem;
-import androidx.leanback.widget.ListRow;
-import androidx.leanback.widget.ListRowPresenter;
-import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
-
-import org.dolphinemu.dolphinemu.fragments.GridOptionDialogFragment;
-import org.dolphinemu.dolphinemu.R;
-import org.dolphinemu.dolphinemu.activities.EmulationActivity;
-import org.dolphinemu.dolphinemu.adapters.GameRowPresenter;
-import org.dolphinemu.dolphinemu.adapters.SettingsRowPresenter;
-import org.dolphinemu.dolphinemu.databinding.ActivityTvMainBinding;
-import org.dolphinemu.dolphinemu.features.settings.ui.MenuTag;
-import org.dolphinemu.dolphinemu.features.settings.ui.SettingsActivity;
-import org.dolphinemu.dolphinemu.model.GameFile;
-import org.dolphinemu.dolphinemu.model.TvSettingsItem;
-import org.dolphinemu.dolphinemu.services.GameFileCacheManager;
-import org.dolphinemu.dolphinemu.ui.platform.Platform;
-import org.dolphinemu.dolphinemu.utils.DirectoryInitialization;
-import org.dolphinemu.dolphinemu.utils.FileBrowserHelper;
-import org.dolphinemu.dolphinemu.utils.PermissionsHandler;
-import org.dolphinemu.dolphinemu.utils.StartupHandler;
-import org.dolphinemu.dolphinemu.utils.TvUtil;
-import org.dolphinemu.dolphinemu.viewholders.TvGameViewHolder;
-
-import java.util.ArrayList;
-import java.util.Collection;
-
-public final class TvMainActivity extends FragmentActivity
-        implements MainView, SwipeRefreshLayout.OnRefreshListener
-{
-  private final MainPresenter mPresenter = new MainPresenter(this, this);
-
-  private SwipeRefreshLayout mSwipeRefresh;
-
-  private BrowseSupportFragment mBrowseFragment;
-
-  private final ArrayList<ArrayObjectAdapter> mGameRows = new ArrayList<>();
-
-  private ActivityTvMainBinding mBinding;
-
-  @Override
-  protected void onCreate(Bundle savedInstanceState)
-  {
-    SplashScreen splashScreen = SplashScreen.installSplashScreen(this);
-    splashScreen.setKeepOnScreenCondition(
-            () -> !DirectoryInitialization.areDolphinDirectoriesReady());
-
-    super.onCreate(savedInstanceState);
-    mBinding = ActivityTvMainBinding.inflate(getLayoutInflater());
-    setContentView(mBinding.getRoot());
-
-    setupUI();
-
-    mPresenter.onCreate();
-
-    // Stuff in this block only happens when this activity is newly created (i.e. not a rotation)
-    if (savedInstanceState == null)
-    {
-      StartupHandler.HandleInit(this);
-    }
-  }
-
-  @Override
-  protected void onResume()
-  {
-    super.onResume();
-
-    if (DirectoryInitialization.shouldStart(this))
-    {
-      DirectoryInitialization.start(this);
-      GameFileCacheManager.startLoad();
-    }
-
-    mPresenter.onResume();
-  }
-
-  @Override
-  protected void onDestroy()
-  {
-    super.onDestroy();
-    mPresenter.onDestroy();
-  }
-
-  @Override
-  protected void onStart()
-  {
-    super.onStart();
-    StartupHandler.checkSessionReset(this);
-  }
-
-  @Override
-  protected void onStop()
-  {
-    super.onStop();
-
-    if (isChangingConfigurations())
-    {
-      MainPresenter.skipRescanningLibrary();
-    }
-
-    StartupHandler.setSessionTime(this);
-  }
-
-  void setupUI()
-  {
-    mSwipeRefresh = mBinding.swipeRefresh;
-
-    mSwipeRefresh.setOnRefreshListener(this);
-
-    setRefreshing(GameFileCacheManager.isLoadingOrRescanning());
-
-    final FragmentManager fragmentManager = getSupportFragmentManager();
-    mBrowseFragment = new BrowseSupportFragment();
-    fragmentManager
-            .beginTransaction()
-            .add(R.id.content, mBrowseFragment, "BrowseFragment")
-            .commit();
-
-    // Set display parameters for the BrowseFragment
-    mBrowseFragment.setHeadersState(BrowseSupportFragment.HEADERS_ENABLED);
-    mBrowseFragment.setBrandColor(ContextCompat.getColor(this, R.color.dolphin_blue));
-    buildRowsAdapter();
-
-    mBrowseFragment.setOnItemViewClickedListener(
-            (itemViewHolder, item, rowViewHolder, row) ->
-            {
-              // Special case: user clicked on a settings row item.
-              if (item instanceof TvSettingsItem)
-              {
-                TvSettingsItem settingsItem = (TvSettingsItem) item;
-                mPresenter.handleOptionSelection(settingsItem.getItemId(), this);
-              }
-              else
-              {
-                TvGameViewHolder holder = (TvGameViewHolder) itemViewHolder;
-
-                // Start the emulation activity and send the path of the clicked ISO to it.
-                String[] paths = GameFileCacheManager.findSecondDiscAndGetPaths(holder.gameFile);
-                EmulationActivity.launch(TvMainActivity.this, paths, false);
-              }
-            });
-  }
-
-  /**
-   * MainView
-   */
-
-  @Override
-  public void setVersionString(String version)
-  {
-    mBrowseFragment.setTitle(version);
-  }
-
-  @Override
-  public void launchSettingsActivity(MenuTag menuTag)
-  {
-    SettingsActivity.launch(this, menuTag);
-  }
-
-  @Override
-  public void launchFileListActivity()
-  {
-    if (DirectoryInitialization.preferOldFolderPicker(this))
-    {
-      FileBrowserHelper.openDirectoryPicker(this, FileBrowserHelper.GAME_EXTENSIONS);
-    }
-    else
-    {
-      Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
-      startActivityForResult(intent, MainPresenter.REQUEST_DIRECTORY);
-    }
-  }
-
-  @Override
-  public void launchOpenFileActivity(int requestCode)
-  {
-    Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
-    intent.addCategory(Intent.CATEGORY_OPENABLE);
-    intent.setType("*/*");
-    startActivityForResult(intent, requestCode);
-  }
-
-  /**
-   * Shows or hides the loading indicator.
-   */
-  @Override
-  public void setRefreshing(boolean refreshing)
-  {
-    mSwipeRefresh.setRefreshing(refreshing);
-  }
-
-  @Override
-  public void showGames()
-  {
-    // Kicks off the program services to update all channels
-    TvUtil.updateAllChannels(getApplicationContext());
-
-    buildRowsAdapter();
-  }
-
-  @Override
-  public void reloadGrid()
-  {
-    for (ArrayObjectAdapter row : mGameRows)
-    {
-      row.notifyArrayItemRangeChanged(0, row.size());
-    }
-  }
-
-  @Override
-  public void showGridOptions()
-  {
-    new GridOptionDialogFragment().show(getSupportFragmentManager(), "gridOptions");
-  }
-
-  /**
-   * Callback from AddDirectoryActivity. Applies any changes necessary to the GameGridActivity.
-   *
-   * @param requestCode An int describing whether the Activity that is returning did so successfully.
-   * @param resultCode  An int describing what Activity is giving us this callback.
-   * @param result      The information the returning Activity is providing us.
-   */
-  @Override
-  protected void onActivityResult(int requestCode, int resultCode, Intent result)
-  {
-    super.onActivityResult(requestCode, resultCode, result);
-
-    // If the user picked a file, as opposed to just backing out.
-    if (resultCode == RESULT_OK)
-    {
-      Uri uri = result.getData();
-      switch (requestCode)
-      {
-        case MainPresenter.REQUEST_DIRECTORY:
-          if (DirectoryInitialization.preferOldFolderPicker(this))
-          {
-            mPresenter.onDirectorySelected(FileBrowserHelper.getSelectedPath(result));
-          }
-          else
-          {
-            mPresenter.onDirectorySelected(result);
-          }
-          break;
-
-        case MainPresenter.REQUEST_GAME_FILE:
-          FileBrowserHelper.runAfterExtensionCheck(this, uri,
-                  FileBrowserHelper.GAME_LIKE_EXTENSIONS,
-                  () -> EmulationActivity.launch(this, result.getData().toString(), false));
-          break;
-
-        case MainPresenter.REQUEST_WAD_FILE:
-          FileBrowserHelper.runAfterExtensionCheck(this, uri, FileBrowserHelper.WAD_EXTENSION,
-                  () -> mPresenter.installWAD(result.getData().toString()));
-          break;
-
-        case MainPresenter.REQUEST_WII_SAVE_FILE:
-          FileBrowserHelper.runAfterExtensionCheck(this, uri, FileBrowserHelper.BIN_EXTENSION,
-                  () -> mPresenter.importWiiSave(result.getData().toString()));
-          break;
-
-        case MainPresenter.REQUEST_NAND_BIN_FILE:
-          FileBrowserHelper.runAfterExtensionCheck(this, uri, FileBrowserHelper.BIN_EXTENSION,
-                  () -> mPresenter.importNANDBin(result.getData().toString()));
-          break;
-      }
-    }
-    else
-    {
-      MainPresenter.skipRescanningLibrary();
-    }
-  }
-
-  @Override
-  public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
-          @NonNull int[] grantResults)
-  {
-    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
-
-    if (requestCode == PermissionsHandler.REQUEST_CODE_WRITE_PERMISSION)
-    {
-      if (grantResults[0] == PackageManager.PERMISSION_DENIED)
-      {
-        PermissionsHandler.setWritePermissionDenied();
-      }
-
-      DirectoryInitialization.start(this);
-      GameFileCacheManager.startLoad();
-    }
-  }
-
-  /**
-   * Called when the user requests a refresh by swiping down.
-   */
-  @Override
-  public void onRefresh()
-  {
-    setRefreshing(true);
-    GameFileCacheManager.startRescan();
-  }
-
-  private void buildRowsAdapter()
-  {
-    ArrayObjectAdapter rowsAdapter = new ArrayObjectAdapter(new ListRowPresenter());
-    mGameRows.clear();
-
-    if (!DirectoryInitialization.isWaitingForWriteAccess(this))
-    {
-      GameFileCacheManager.startLoad();
-    }
-
-    for (Platform platform : Platform.values())
-    {
-      ListRow row = buildGamesRow(platform, GameFileCacheManager.getGameFilesForPlatform(platform));
-
-      // Add row to the adapter only if it is not empty.
-      if (row != null)
-      {
-        rowsAdapter.add(row);
-      }
-    }
-
-    rowsAdapter.add(buildSettingsRow());
-
-    mBrowseFragment.setAdapter(rowsAdapter);
-  }
-
-  private ListRow buildGamesRow(Platform platform, Collection<GameFile> gameFiles)
-  {
-    // If there are no games, don't return a Row.
-    if (gameFiles.size() == 0)
-    {
-      return null;
-    }
-
-    // Create an adapter for this row.
-    ArrayObjectAdapter row = new ArrayObjectAdapter(new GameRowPresenter(this));
-    row.addAll(0, gameFiles);
-
-    // Keep a reference to the row in case we need to refresh it.
-    mGameRows.add(row);
-
-    // Create a header for this row.
-    HeaderItem header = new HeaderItem(platform.toInt(), getString(platform.getHeaderName()));
-
-    // Create the row, passing it the filled adapter and the header, and give it to the master adapter.
-    return new ListRow(header, row);
-  }
-
-  private ListRow buildSettingsRow()
-  {
-    ArrayObjectAdapter rowItems = new ArrayObjectAdapter(new SettingsRowPresenter());
-
-    rowItems.add(new TvSettingsItem(R.id.menu_settings,
-            R.drawable.ic_settings_tv,
-            R.string.grid_menu_settings));
-
-    rowItems.add(new TvSettingsItem(R.id.button_add_directory,
-            R.drawable.ic_add_tv,
-            R.string.add_directory_title));
-
-    rowItems.add(new TvSettingsItem(R.id.menu_grid_options,
-            R.drawable.ic_list_tv,
-            R.string.grid_menu_grid_options));
-
-    rowItems.add(new TvSettingsItem(R.id.menu_refresh,
-            R.drawable.ic_refresh_tv,
-            R.string.grid_menu_refresh));
-
-    rowItems.add(new TvSettingsItem(R.id.menu_open_file,
-            R.drawable.ic_play_tv,
-            R.string.grid_menu_open_file));
-
-    rowItems.add(new TvSettingsItem(R.id.menu_install_wad,
-            R.drawable.ic_folder_tv,
-            R.string.grid_menu_install_wad));
-
-    rowItems.add(new TvSettingsItem(R.id.menu_load_wii_system_menu,
-            R.drawable.ic_folder_tv,
-            R.string.grid_menu_load_wii_system_menu));
-
-    rowItems.add(new TvSettingsItem(R.id.menu_import_wii_save,
-            R.drawable.ic_folder_tv,
-            R.string.grid_menu_import_wii_save));
-
-    rowItems.add(new TvSettingsItem(R.id.menu_import_nand_backup,
-            R.drawable.ic_folder_tv,
-            R.string.grid_menu_import_nand_backup));
-
-    rowItems.add(new TvSettingsItem(R.id.menu_online_system_update,
-            R.drawable.ic_folder_tv,
-            R.string.grid_menu_online_system_update));
-
-    rowItems.add(new TvSettingsItem(R.id.menu_about,
-            R.drawable.ic_info_tv,
-            R.string.grid_menu_about));
-
-    // Create a header for this row.
-    HeaderItem header = new HeaderItem(R.string.settings, getString(R.string.settings));
-
-    return new ListRow(header, rowItems);
-  }
-}
diff --git a/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/TvMainActivity.kt b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/TvMainActivity.kt
new file mode 100644
index 0000000000..79ec2f2943
--- /dev/null
+++ b/Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/ui/main/TvMainActivity.kt
@@ -0,0 +1,370 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package org.dolphinemu.dolphinemu.ui.main
+
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.os.Bundle
+import androidx.core.content.ContextCompat
+import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
+import androidx.fragment.app.FragmentActivity
+import androidx.leanback.app.BrowseSupportFragment
+import androidx.leanback.widget.ArrayObjectAdapter
+import androidx.leanback.widget.HeaderItem
+import androidx.leanback.widget.ListRow
+import androidx.leanback.widget.ListRowPresenter
+import androidx.leanback.widget.OnItemViewClickedListener
+import androidx.leanback.widget.Presenter
+import androidx.leanback.widget.Row
+import androidx.leanback.widget.RowPresenter
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+import androidx.swiperefreshlayout.widget.SwipeRefreshLayout.OnRefreshListener
+import org.dolphinemu.dolphinemu.R
+import org.dolphinemu.dolphinemu.activities.EmulationActivity
+import org.dolphinemu.dolphinemu.adapters.GameRowPresenter
+import org.dolphinemu.dolphinemu.adapters.SettingsRowPresenter
+import org.dolphinemu.dolphinemu.databinding.ActivityTvMainBinding
+import org.dolphinemu.dolphinemu.features.settings.ui.MenuTag
+import org.dolphinemu.dolphinemu.features.settings.ui.SettingsActivity
+import org.dolphinemu.dolphinemu.fragments.GridOptionDialogFragment
+import org.dolphinemu.dolphinemu.model.GameFile
+import org.dolphinemu.dolphinemu.model.TvSettingsItem
+import org.dolphinemu.dolphinemu.services.GameFileCacheManager
+import org.dolphinemu.dolphinemu.ui.platform.Platform
+import org.dolphinemu.dolphinemu.utils.DirectoryInitialization
+import org.dolphinemu.dolphinemu.utils.FileBrowserHelper
+import org.dolphinemu.dolphinemu.utils.PermissionsHandler
+import org.dolphinemu.dolphinemu.utils.StartupHandler
+import org.dolphinemu.dolphinemu.utils.TvUtil
+import org.dolphinemu.dolphinemu.viewholders.TvGameViewHolder
+
+class TvMainActivity : FragmentActivity(), MainView, OnRefreshListener {
+    private val presenter = MainPresenter(this, this)
+
+    private var swipeRefresh: SwipeRefreshLayout? = null
+
+    private var browseFragment: BrowseSupportFragment? = null
+
+    private val gameRows = ArrayList<ArrayObjectAdapter>()
+
+    private lateinit var binding: ActivityTvMainBinding
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        installSplashScreen().setKeepOnScreenCondition { !DirectoryInitialization.areDolphinDirectoriesReady() }
+
+        super.onCreate(savedInstanceState)
+        binding = ActivityTvMainBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        setupUI()
+
+        presenter.onCreate()
+
+        // Stuff in this block only happens when this activity is newly created (i.e. not a rotation)
+        if (savedInstanceState == null) {
+            StartupHandler.HandleInit(this)
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        if (DirectoryInitialization.shouldStart(this)) {
+            DirectoryInitialization.start(this)
+            GameFileCacheManager.startLoad()
+        }
+
+        presenter.onResume()
+    }
+
+    override fun onStart() {
+        super.onStart()
+        StartupHandler.checkSessionReset(this)
+    }
+
+    override fun onStop() {
+        super.onStop()
+        if (isChangingConfigurations) {
+            MainPresenter.skipRescanningLibrary()
+        }
+        StartupHandler.setSessionTime(this)
+    }
+
+    private fun setupUI() {
+        swipeRefresh = binding.swipeRefresh
+        swipeRefresh!!.setOnRefreshListener(this)
+        setRefreshing(GameFileCacheManager.isLoadingOrRescanning())
+
+        browseFragment = BrowseSupportFragment()
+        supportFragmentManager
+            .beginTransaction()
+            .add(R.id.content, browseFragment!!, "BrowseFragment")
+            .commit()
+
+        // Set display parameters for the BrowseFragment
+        browseFragment?.headersState = BrowseSupportFragment.HEADERS_ENABLED
+        browseFragment?.brandColor = ContextCompat.getColor(this, R.color.dolphin_blue)
+        buildRowsAdapter()
+
+        browseFragment?.onItemViewClickedListener =
+            OnItemViewClickedListener { itemViewHolder: Presenter.ViewHolder, item: Any?, _: RowPresenter.ViewHolder?, _: Row? ->
+                // Special case: user clicked on a settings row item.
+                if (item is TvSettingsItem) {
+                    presenter.handleOptionSelection(item.itemId, this)
+                } else {
+                    val holder = itemViewHolder as TvGameViewHolder
+
+                    // Start the emulation activity and send the path of the clicked ISO to it.
+                    val paths = GameFileCacheManager.findSecondDiscAndGetPaths(holder.gameFile)
+                    EmulationActivity.launch(this@TvMainActivity, paths, false)
+                }
+            }
+    }
+
+    /**
+     * MainView
+     */
+    override fun setVersionString(version: String) {
+        browseFragment?.title = version
+    }
+
+    override fun launchSettingsActivity(menuTag: MenuTag?) {
+        SettingsActivity.launch(this, menuTag)
+    }
+
+    override fun launchFileListActivity() {
+        if (DirectoryInitialization.preferOldFolderPicker(this)) {
+            FileBrowserHelper.openDirectoryPicker(this, FileBrowserHelper.GAME_EXTENSIONS)
+        } else {
+            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
+            startActivityForResult(intent, MainPresenter.REQUEST_DIRECTORY)
+        }
+    }
+
+    override fun launchOpenFileActivity(requestCode: Int) {
+        val intent = Intent(Intent.ACTION_OPEN_DOCUMENT)
+        intent.addCategory(Intent.CATEGORY_OPENABLE)
+        intent.type = "*/*"
+        startActivityForResult(intent, requestCode)
+    }
+
+    /**
+     * Shows or hides the loading indicator.
+     */
+    override fun setRefreshing(refreshing: Boolean) {
+        swipeRefresh?.isRefreshing = refreshing
+    }
+
+    override fun showGames() {
+        // Kicks off the program services to update all channels
+        TvUtil.updateAllChannels(applicationContext)
+
+        buildRowsAdapter()
+    }
+
+    override fun reloadGrid() {
+        for (row in gameRows) {
+            row.notifyArrayItemRangeChanged(0, row.size())
+        }
+    }
+
+    override fun showGridOptions() {
+        GridOptionDialogFragment().show(supportFragmentManager, "gridOptions")
+    }
+
+    /**
+     * Callback from AddDirectoryActivity. Applies any changes necessary to the GameGridActivity.
+     *
+     * @param requestCode An int describing whether the Activity that is returning did so successfully.
+     * @param resultCode  An int describing what Activity is giving us this callback.
+     * @param result      The information the returning Activity is providing us.
+     */
+    override fun onActivityResult(requestCode: Int, resultCode: Int, result: Intent?) {
+        super.onActivityResult(requestCode, resultCode, result)
+
+        // If the user picked a file, as opposed to just backing out.
+        if (resultCode == RESULT_OK) {
+            val uri = result!!.data
+            when (requestCode) {
+                MainPresenter.REQUEST_DIRECTORY -> {
+                    if (DirectoryInitialization.preferOldFolderPicker(this)) {
+                        presenter.onDirectorySelected(FileBrowserHelper.getSelectedPath(result))
+                    } else {
+                        presenter.onDirectorySelected(result)
+                    }
+                }
+
+                MainPresenter.REQUEST_GAME_FILE -> FileBrowserHelper.runAfterExtensionCheck(
+                    this, uri, FileBrowserHelper.GAME_LIKE_EXTENSIONS
+                ) { EmulationActivity.launch(this, result.data.toString(), false) }
+
+                MainPresenter.REQUEST_WAD_FILE -> FileBrowserHelper.runAfterExtensionCheck(
+                    this, uri, FileBrowserHelper.WAD_EXTENSION
+                ) { presenter.installWAD(result.data.toString()) }
+
+                MainPresenter.REQUEST_WII_SAVE_FILE -> FileBrowserHelper.runAfterExtensionCheck(
+                    this, uri, FileBrowserHelper.BIN_EXTENSION
+                ) { presenter.importWiiSave(result.data.toString()) }
+
+                MainPresenter.REQUEST_NAND_BIN_FILE -> FileBrowserHelper.runAfterExtensionCheck(
+                    this, uri, FileBrowserHelper.BIN_EXTENSION
+                ) { presenter.importNANDBin(result.data.toString()) }
+            }
+        } else {
+            MainPresenter.skipRescanningLibrary()
+        }
+    }
+
+    override fun onRequestPermissionsResult(
+        requestCode: Int,
+        permissions: Array<String>,
+        grantResults: IntArray
+    ) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+        if (requestCode == PermissionsHandler.REQUEST_CODE_WRITE_PERMISSION) {
+            if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
+                PermissionsHandler.setWritePermissionDenied()
+            }
+
+            DirectoryInitialization.start(this)
+            GameFileCacheManager.startLoad()
+        }
+    }
+
+    /**
+     * Called when the user requests a refresh by swiping down.
+     */
+    override fun onRefresh() {
+        setRefreshing(true)
+        GameFileCacheManager.startRescan()
+    }
+
+    private fun buildRowsAdapter() {
+        val rowsAdapter = ArrayObjectAdapter(ListRowPresenter())
+        gameRows.clear()
+
+        if (!DirectoryInitialization.isWaitingForWriteAccess(this)) {
+            GameFileCacheManager.startLoad()
+        }
+
+        for (platform in Platform.values()) {
+            val row =
+                buildGamesRow(platform, GameFileCacheManager.getGameFilesForPlatform(platform))
+
+            // Add row to the adapter only if it is not empty.
+            if (row != null) {
+                rowsAdapter.add(row)
+            }
+        }
+
+        rowsAdapter.add(buildSettingsRow())
+
+        browseFragment!!.adapter = rowsAdapter
+    }
+
+    private fun buildGamesRow(platform: Platform, gameFiles: Collection<GameFile?>): ListRow? {
+        // If there are no games, don't return a Row.
+        if (gameFiles.isEmpty()) {
+            return null
+        }
+
+        // Create an adapter for this row.
+        val row = ArrayObjectAdapter(GameRowPresenter(this))
+        row.addAll(0, gameFiles)
+
+        // Keep a reference to the row in case we need to refresh it.
+        gameRows.add(row)
+
+        // Create a header for this row.
+        val header = HeaderItem(platform.toInt().toLong(), getString(platform.headerName))
+
+        // Create the row, passing it the filled adapter and the header, and give it to the master adapter.
+        return ListRow(header, row)
+    }
+
+    private fun buildSettingsRow(): ListRow {
+        val rowItems = ArrayObjectAdapter(SettingsRowPresenter())
+        rowItems.apply {
+            add(
+                TvSettingsItem(
+                    R.id.menu_settings,
+                    R.drawable.ic_settings_tv,
+                    R.string.grid_menu_settings
+                )
+            )
+            add(
+                TvSettingsItem(
+                    R.id.button_add_directory,
+                    R.drawable.ic_add_tv,
+                    R.string.add_directory_title
+                )
+            )
+            add(
+                TvSettingsItem(
+                    R.id.menu_grid_options,
+                    R.drawable.ic_list_tv,
+                    R.string.grid_menu_grid_options
+                )
+            )
+            add(
+                TvSettingsItem(
+                    R.id.menu_refresh,
+                    R.drawable.ic_refresh_tv,
+                    R.string.grid_menu_refresh
+                )
+            )
+            add(
+                TvSettingsItem(
+                    R.id.menu_open_file,
+                    R.drawable.ic_play_tv,
+                    R.string.grid_menu_open_file
+                )
+            )
+            add(
+                TvSettingsItem(
+                    R.id.menu_install_wad,
+                    R.drawable.ic_folder_tv,
+                    R.string.grid_menu_install_wad
+                )
+            )
+            add(
+                TvSettingsItem(
+                    R.id.menu_load_wii_system_menu,
+                    R.drawable.ic_folder_tv,
+                    R.string.grid_menu_load_wii_system_menu
+                )
+            )
+            add(
+                TvSettingsItem(
+                    R.id.menu_import_wii_save,
+                    R.drawable.ic_folder_tv,
+                    R.string.grid_menu_import_wii_save
+                )
+            )
+            add(
+                TvSettingsItem(
+                    R.id.menu_import_nand_backup,
+                    R.drawable.ic_folder_tv,
+                    R.string.grid_menu_import_nand_backup
+                )
+            )
+            add(
+                TvSettingsItem(
+                    R.id.menu_online_system_update,
+                    R.drawable.ic_folder_tv,
+                    R.string.grid_menu_online_system_update
+                )
+            )
+            add(
+                TvSettingsItem(
+                    R.id.menu_about,
+                    R.drawable.ic_info_tv,
+                    R.string.grid_menu_about
+                )
+            )
+        }
+
+        // Create a header for this row.
+        val header = HeaderItem(R.string.settings.toLong(), getString(R.string.settings))
+        return ListRow(header, rowItems)
+    }
+}
\ No newline at end of file