...

app/src/main/java/com/base/browserwhite/ui/activity/MainActivity.kt

 package com.base.browserwhite.ui.activity
 
-import android.annotation.SuppressLint
 import android.app.usage.StorageStatsManager
 import android.graphics.Color
 import android.os.Build
@@ -11,13 +10,14 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.isEmpty
 import androidx.core.view.updatePadding
 import androidx.fragment.app.Fragment
+import androidx.viewpager2.adapter.FragmentStateAdapter
+import androidx.viewpager2.widget.ViewPager2
 import com.base.browserwhite.R
 import com.base.browserwhite.databinding.ActivityMainBinding
 import com.base.browserwhite.ui.fragment.FileFragment
 import com.base.browserwhite.ui.fragment.HomeFragment
 import com.base.browserwhite.ui.views.DialogViews.showMyAccountDialog
 import com.base.browserwhite.utils.BarUtils
-import com.base.browserwhite.utils.KotlinExt.toFormatSize
 import java.io.File
 
 class MainActivity : BaseActivity<ActivityMainBinding>() {
@@ -35,28 +35,49 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
     var usedBytes: Long = 0
     var totalBytes: Long = 0
 
+    private val fragments by lazy {
+        mutableListOf(homeFragment, fileFragment)
+    }
+
 
     override fun initView() {
         BarUtils.setStatusBarLightMode(this, true)
         BarUtils.setStatusBarColor(this, Color.TRANSPARENT)
         binding.root.updatePadding(top = BarUtils.getStatusBarHeight())
 
+        binding.viewPager2.run {
+            isUserInputEnabled = false
+            adapter = object : FragmentStateAdapter(this@MainActivity) {
+                override fun getItemCount(): Int {
+                    return fragments.size
+                }
+
+                override fun createFragment(position: Int): Fragment {
+                    return fragments[position]
+                }
+            }
+        }
+
+        binding.viewPager2.registerOnPageChangeCallback(object :
+            ViewPager2.OnPageChangeCallback() {
+            override fun onPageSelected(position: Int) {
+            }
+        })
 
-//        startActivity(Intent(this, LabelStackActivity::class.java))
     }
 
+
     override fun initListener() {
         super.initListener()
         binding.llHome.setOnClickListener {
             disSelect()
             binding.llHome.isSelected = true
-            changeFragment(homeFragment)
+            binding.viewPager2.setCurrentItem(0, false)
         }
         binding.llFile.setOnClickListener {
             disSelect()
             binding.llFile.isSelected = true
-
-            changeFragment(fileFragment)
+            binding.viewPager2.setCurrentItem(1, false)
         }
 
         binding.llHome.callOnClick()
@@ -66,16 +87,6 @@ class MainActivity : BaseActivity<ActivityMainBinding>() {
         }
     }
 
-    private fun changeFragment(fragment: Fragment) {
-        val transaction = supportFragmentManager.beginTransaction()
-        if (binding.fragmentContainer.isEmpty()) {
-            transaction.add(R.id.fragment_container, fragment)
-        } else {
-            transaction.replace(R.id.fragment_container, fragment)
-        }
-        transaction.commit()
-    }
-
 
     private fun disSelect() {
         binding.llHome.isSelected = false

app/src/main/res/layout/activity_main.xml

@@ -7,8 +7,8 @@
     android:layout_height="match_parent"
     tools:context=".ui.activity.MainActivity">
 
-    <FrameLayout
-        android:id="@+id/fragment_container"
+    <androidx.viewpager2.widget.ViewPager2
+        android:id="@+id/viewPager2"
         android:layout_width="match_parent"
         android:layout_height="0dp"
         app:layout_constraintBottom_toTopOf="@id/ll_bottom_nav"