优化

app/src/main/java/io/legado/app/constant/PreferKey.kt

@@ -135,6 +135,7 @@ object PreferKey {
     const val shrinkDatabase = "shrinkDatabase"
     const val batchChangeSourceDelay = "batchChangeSourceDelay"
     const val openBookInfoByClickTitle = "openBookInfoByClickTitle"
+    const val defaultHomePage = "defaultHomePage"
 
     const val cPrimary = "colorPrimary"
     const val cAccent = "colorAccent"

app/src/main/java/io/legado/app/help/config/AppConfig.kt

@@ -429,6 +429,8 @@ object AppConfig : SharedPreferences.OnSharedPreferenceChangeListener {
 
     val onlyLatestBackup get() = appCtx.getPrefBoolean(PreferKey.onlyLatestBackup, true)
 
+    val defaultHomePage get() = appCtx.getPrefString(PreferKey.defaultHomePage, "bookshelf")
+
     val doublePageHorizontal: String?
         get() = appCtx.getPrefString(PreferKey.doublePageHorizontal)
 

app/src/main/java/io/legado/app/ui/main/MainActivity.kt

@@ -91,6 +91,7 @@ class MainActivity : VMBaseActivity<ActivityMainBinding, MainViewModel>(),
             bottomNavigationView.setOnNavigationItemSelectedListener(this@MainActivity)
             bottomNavigationView.setOnNavigationItemReselectedListener(this@MainActivity)
         }
+        upHomePage()
         onBackPressedDispatcher.addCallback(this) {
             if (pagePosition != 0) {
                 binding.viewPagerMain.currentItem = 0
@@ -369,6 +370,21 @@ class MainActivity : VMBaseActivity<ActivityMainBinding, MainViewModel>(),
         adapter.notifyDataSetChanged()
     }
 
+    private fun upHomePage() {
+        when (AppConfig.defaultHomePage) {
+            "bookshelf" -> {}
+            "explore" -> if (AppConfig.showDiscovery) {
+                binding.viewPagerMain.setCurrentItem(realPositions.indexOf(idExplore), false)
+            }
+
+            "rss" -> if (AppConfig.showRSS) {
+                binding.viewPagerMain.setCurrentItem(realPositions.indexOf(idRss), false)
+            }
+
+            "my" -> binding.viewPagerMain.setCurrentItem(realPositions.indexOf(idMy), false)
+        }
+    }
+
     private fun getFragmentId(position: Int): Int {
         val id = realPositions[position]
         if (id == idBookshelf) {