diff --git a/app/src/main/java/io/legado/app/ui/main/MainAdapter.kt b/app/src/main/java/io/legado/app/ui/main/MainAdapter.kt
deleted file mode 100644
index 874912da0..000000000
--- a/app/src/main/java/io/legado/app/ui/main/MainAdapter.kt
+++ /dev/null
@@ -1,49 +0,0 @@
-package io.legado.app.ui.main
-
-import androidx.fragment.app.Fragment
-import androidx.viewpager2.adapter.FragmentStateAdapter
-import io.legado.app.help.AppConfig
-import io.legado.app.ui.main.bookshelf.BookshelfFragment
-import io.legado.app.ui.main.explore.ExploreFragment
-import io.legado.app.ui.main.my.MyFragment
-import io.legado.app.ui.main.rss.RssFragment
-
-class MainAdapter(val activity: MainActivity) : FragmentStateAdapter(activity) {
-
-    private val fid1 = 111.toLong()
-    private val fid2 = 222.toLong()
-    private val fid3 = 333.toLong()
-    private val fid4 = 444.toLong()
-
-    private val ids: ArrayList<Long>
-        get() = if (AppConfig.isShowRSS) {
-            arrayListOf(fid1, fid2, fid3, fid4)
-        } else {
-            arrayListOf(fid1, fid2, fid4)
-        }
-
-    private val createdIds = hashSetOf<Long>()
-
-    override fun getItemCount(): Int {
-        return if (AppConfig.isShowRSS) 4 else 3
-    }
-
-    override fun getItemId(position: Int): Long {
-        return ids[position]
-    }
-
-    override fun containsItem(itemId: Long): Boolean {
-        return createdIds.contains(itemId)
-    }
-
-    override fun createFragment(position: Int): Fragment {
-        val id = ids[position]
-        createdIds.add(id)
-        return when (id) {
-            fid4 -> MyFragment()
-            fid3 -> RssFragment()
-            fid2 -> ExploreFragment()
-            else -> BookshelfFragment()
-        }
-    }
-}
\ No newline at end of file