add the default tab settings

src/main/kotlin/com/looker/droidify/content/Preferences.kt

@@ -35,6 +35,7 @@ object Preferences {
         Key.RootPermission,
         Key.SortOrder,
         Key.Theme,
+        Key.DefaultTab,
         Key.UpdateNotify,
         Key.UpdateUnstable
     ).map { Pair(it.name, it) }.toMap()
@@ -169,6 +170,12 @@ object Preferences {
             )
         )
 
+        object DefaultTab : Key<Preferences.DefaultTab>(
+            "default_tab", Value.EnumerationValue(
+                Preferences.DefaultTab.Explore
+            )
+        )
+
         object UpdateNotify : Key<Boolean>("update_notify", Value.BooleanValue(true))
         object UpdateUnstable : Key<Boolean>("update_unstable", Value.BooleanValue(false))
     }
@@ -237,6 +244,25 @@ object Preferences {
         }
     }
 
+    sealed class DefaultTab(override val valueString: String) : Enumeration<DefaultTab> {
+        override val values: List<DefaultTab>
+            get() = listOf(Explore, Latest, Installed)
+
+        abstract fun getResId(configuration: Configuration): Int
+
+        object Explore : DefaultTab("explore") {
+            override fun getResId(configuration: Configuration): Int = R.id.exploreTab
+        }
+
+        object Latest : DefaultTab("latest") {
+            override fun getResId(configuration: Configuration): Int = R.id.latestTab
+        }
+
+        object Installed : DefaultTab("installed") {
+            override fun getResId(configuration: Configuration): Int = R.id.installedTab
+        }
+    }
+
     operator fun <T> get(key: Key<T>): T {
         return key.default.get(preferences, key.name, key.default)
     }

src/main/kotlin/com/looker/droidify/ui/activities/MainActivityX.kt

@@ -68,9 +68,11 @@ class MainActivityX : AppCompatActivity() {
         get() = (application as MainApplication).db
 
     var currentTheme by Delegates.notNull<Int>()
+    var currentTab by Delegates.notNull<Int>()
 
     override fun onCreate(savedInstanceState: Bundle?) {
         currentTheme = Preferences[Preferences.Key.Theme].getResId(resources.configuration)
+        currentTab = Preferences[Preferences.Key.DefaultTab].getResId(resources.configuration)
         setTheme(currentTheme)
         super.onCreate(savedInstanceState)
         binding = ActivityMainXBinding.inflate(layoutInflater)
@@ -79,20 +81,7 @@ class MainActivityX : AppCompatActivity() {
         binding.lifecycleOwner = this
         toolbar = binding.toolbar
 
-        if (savedInstanceState == null && (intent.flags and Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY) == 0) {
-            handleIntent(intent)
-        }
-        WindowCompat.setDecorFitsSystemWindows(window, false)
-    }
-
-    override fun onStart() {
-        super.onStart()
         setSupportActionBar(toolbar)
-        if (Android.sdk(28) && !Android.Device.isHuaweiEmui) {
-            toolbar.menu.setGroupDividerEnabled(true)
-        }
-        toolbar.isFocusableInTouchMode = true
-        toolbar.title = getString(R.string.application_name)
 
         val navHostFragment =
             supportFragmentManager.findFragmentById(R.id.fragment_content) as NavHostFragment
@@ -103,6 +92,21 @@ class MainActivityX : AppCompatActivity() {
             setOf(R.id.exploreTab, R.id.latestTab, R.id.installedTab)
         )
         setupActionBarWithNavController(navController, appBarConfiguration)
+        binding.bottomNavigation.selectedItemId = currentTab
+
+        if (savedInstanceState == null && (intent.flags and Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY) == 0) {
+            handleIntent(intent)
+        }
+        WindowCompat.setDecorFitsSystemWindows(window, false)
+    }
+
+    override fun onStart() {
+        super.onStart()
+        if (Android.sdk(28) && !Android.Device.isHuaweiEmui) {
+            toolbar.menu.setGroupDividerEnabled(true)
+        }
+        toolbar.isFocusableInTouchMode = true
+        toolbar.title = getString(R.string.application_name)
 
         supportFragmentManager.addFragmentOnAttachListener { _, _ ->
             hideKeyboard()

src/main/kotlin/com/looker/droidify/ui/fragments/PrefsUserFragment.kt

@@ -37,6 +37,13 @@ class PrefsUserFragment : PrefsNavFragmentX() {
                     is Preferences.Theme.Amoled -> getString(R.string.amoled)
                 }
             }
+            addEnumeration(Preferences.Key.DefaultTab, getString(R.string.default_tab)) {
+                when (it) {
+                    is Preferences.DefaultTab.Explore -> getString(R.string.explore)
+                    is Preferences.DefaultTab.Latest -> getString(R.string.latest)
+                    is Preferences.DefaultTab.Installed -> getString(R.string.installed)
+                }
+            }
             addSwitch(
                 Preferences.Key.ListAnimation, getString(R.string.list_animation),
                 getString(R.string.list_animation_description)

src/main/res/values/strings.xml

@@ -186,4 +186,5 @@
     <string name="prefs_updated_apps">Number of updated apps to show</string>
     <string name="prefs_new_apps">Number of new apps to show</string>
     <string name="new_repository">New repository</string>
+    <string name="default_tab">Default Tab</string>
 </resources>