...

app/src/main/java/com/base/pdfviewerscannerwhite/ui/main/MainActivity.kt

@@ -5,10 +5,12 @@ import android.net.Uri
 import android.provider.MediaStore
 import android.view.View
 import androidx.core.content.ContextCompat
+import androidx.core.view.isVisible
 import androidx.fragment.app.Fragment
 import androidx.viewpager2.adapter.FragmentStateAdapter
 import androidx.viewpager2.widget.ViewPager2
 import com.angcyo.tablayout.DslTabIndicator
+import com.angcyo.tablayout.delegate2.ViewPager2Delegate
 import com.base.pdfviewerscannerwhite.BuildConfig
 import com.base.pdfviewerscannerwhite.R
 import com.base.pdfviewerscannerwhite.bean.DocumentBean
@@ -74,6 +76,14 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), MainView {
         }
         binding.viewPager2.registerOnPageChangeCallback(object :
             ViewPager2.OnPageChangeCallback() {
+
+            override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) {
+                super.onPageScrolled(position, positionOffset, positionOffsetPixels)
+                if (position == 3 && positionOffset > 0) {
+                    binding.viewPager2.setCurrentItem(position, false)
+                }
+            }
+
             override fun onPageSelected(position: Int) {
                 currentFragment = fragments[position]
             }
@@ -139,8 +149,7 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), MainView {
                 }
             }
         }
-
-
+        ViewPager2Delegate.install(binding.viewPager2, binding.tabLayoutDocument)
     }
 
 
@@ -206,7 +215,6 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), MainView {
             binding.viewPager2.setCurrentItem(5, false)
             binding.clAction.visibility = View.GONE
         }
-
         binding.ivScan.setOnClickListener {
             mainPresenter.starGmsScan(this)
         }
@@ -229,8 +237,15 @@ class MainActivity : BaseActivity<ActivityMainBinding>(), MainView {
                 (currentFragment as DocumentFragment).changeSelectUi()
             }
         }
-
         binding.llDocument.callOnClick()
+
+        binding.tvTittle.setOnClickListener {
+            if (binding.viewPager2.isVisible) {
+                binding.viewPager2.isVisible = false
+            } else {
+                binding.viewPager2.isVisible = true
+            }
+        }
     }