diff --git a/app/src/main/java/io/legado/app/base/BaseActivity.kt b/app/src/main/java/io/legado/app/base/BaseActivity.kt
index b15403956..6406c18bf 100644
--- a/app/src/main/java/io/legado/app/base/BaseActivity.kt
+++ b/app/src/main/java/io/legado/app/base/BaseActivity.kt
@@ -38,7 +38,7 @@ abstract class BaseActivity<VB : ViewBinding>(
 ) : AppCompatActivity(),
     CoroutineScope by MainScope() {
 
-    protected val binding: VB by lazy { getViewBinding() }
+    protected abstract val binding: VB
 
     val isInMultiWindow: Boolean
         get() {
@@ -53,8 +53,6 @@ abstract class BaseActivity<VB : ViewBinding>(
         super.attachBaseContext(LanguageUtils.setConfiguration(newBase))
     }
 
-    protected abstract fun getViewBinding(): VB
-
     override fun onCreateView(
         parent: View?,
         name: String,
diff --git a/app/src/main/java/io/legado/app/ui/about/AboutActivity.kt b/app/src/main/java/io/legado/app/ui/about/AboutActivity.kt
index 2c669aacd..f7462712d 100644
--- a/app/src/main/java/io/legado/app/ui/about/AboutActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/about/AboutActivity.kt
@@ -13,13 +13,12 @@ import io.legado.app.lib.theme.ATH
 import io.legado.app.lib.theme.accentColor
 import io.legado.app.utils.openUrl
 import io.legado.app.utils.share
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 
 class AboutActivity : BaseActivity<ActivityAboutBinding>() {
 
-    override fun getViewBinding(): ActivityAboutBinding {
-        return ActivityAboutBinding.inflate(layoutInflater)
-    }
+    override val binding by viewBinding(ActivityAboutBinding::inflate)
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         binding.llAbout.background = ATH.getDialogBackground()
diff --git a/app/src/main/java/io/legado/app/ui/about/DonateActivity.kt b/app/src/main/java/io/legado/app/ui/about/DonateActivity.kt
index 660ba79b2..831d25535 100644
--- a/app/src/main/java/io/legado/app/ui/about/DonateActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/about/DonateActivity.kt
@@ -5,6 +5,7 @@ import android.os.Bundle
 import io.legado.app.R
 import io.legado.app.base.BaseActivity
 import io.legado.app.databinding.ActivityDonateBinding
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 /**
  * Created by GKF on 2018/1/13.
@@ -13,9 +14,7 @@ import io.legado.app.databinding.ActivityDonateBinding
 
 class DonateActivity : BaseActivity<ActivityDonateBinding>() {
 
-    override fun getViewBinding(): ActivityDonateBinding {
-        return ActivityDonateBinding.inflate(layoutInflater)
-    }
+    override val binding by viewBinding(ActivityDonateBinding::inflate)
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         val fTag = "donateFragment"
diff --git a/app/src/main/java/io/legado/app/ui/about/ReadRecordActivity.kt b/app/src/main/java/io/legado/app/ui/about/ReadRecordActivity.kt
index 08de241e8..aea9f773d 100644
--- a/app/src/main/java/io/legado/app/ui/about/ReadRecordActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/about/ReadRecordActivity.kt
@@ -18,6 +18,7 @@ import io.legado.app.ui.book.read.ReadBookActivity
 import io.legado.app.ui.book.search.SearchActivity
 import io.legado.app.utils.cnCompare
 import io.legado.app.utils.startActivity
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.Dispatchers.Main
 import kotlinx.coroutines.launch
@@ -29,9 +30,7 @@ class ReadRecordActivity : BaseActivity<ActivityReadRecordBinding>() {
     lateinit var adapter: RecordAdapter
     private var sortMode = 0
 
-    override fun getViewBinding(): ActivityReadRecordBinding {
-        return ActivityReadRecordBinding.inflate(layoutInflater)
-    }
+    override val binding by viewBinding(ActivityReadRecordBinding::inflate)
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initView()
diff --git a/app/src/main/java/io/legado/app/ui/association/FileAssociationActivity.kt b/app/src/main/java/io/legado/app/ui/association/FileAssociationActivity.kt
index 8401830c6..0fa73e39e 100644
--- a/app/src/main/java/io/legado/app/ui/association/FileAssociationActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/association/FileAssociationActivity.kt
@@ -6,15 +6,14 @@ import io.legado.app.base.VMBaseActivity
 import io.legado.app.constant.Theme
 import io.legado.app.databinding.ActivityTranslucenceBinding
 import io.legado.app.utils.toastOnUi
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 class FileAssociationActivity :
     VMBaseActivity<ActivityTranslucenceBinding, FileAssociationViewModel>(
         theme = Theme.Transparent
     ) {
 
-    override fun getViewBinding(): ActivityTranslucenceBinding {
-        return ActivityTranslucenceBinding.inflate(layoutInflater)
-    }
+    override val binding by viewBinding(ActivityTranslucenceBinding::inflate)
 
     override val viewModel: FileAssociationViewModel by viewModels()
 
diff --git a/app/src/main/java/io/legado/app/ui/association/ImportBookSourceActivity.kt b/app/src/main/java/io/legado/app/ui/association/ImportBookSourceActivity.kt
index c5a060d81..a4ee8af19 100644
--- a/app/src/main/java/io/legado/app/ui/association/ImportBookSourceActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/association/ImportBookSourceActivity.kt
@@ -10,6 +10,7 @@ import io.legado.app.help.IntentDataHelp
 import io.legado.app.lib.dialogs.alert
 
 import io.legado.app.utils.toastOnUi
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 
 class ImportBookSourceActivity :
@@ -17,9 +18,7 @@ class ImportBookSourceActivity :
         theme = Theme.Transparent
     ) {
 
-    override fun getViewBinding(): ActivityTranslucenceBinding {
-        return ActivityTranslucenceBinding.inflate(layoutInflater)
-    }
+    override val binding by viewBinding(ActivityTranslucenceBinding::inflate)
 
     override val viewModel: ImportBookSourceViewModel
             by viewModels()
diff --git a/app/src/main/java/io/legado/app/ui/association/ImportReplaceRuleActivity.kt b/app/src/main/java/io/legado/app/ui/association/ImportReplaceRuleActivity.kt
index 9596b78c8..c2fa0d04d 100644
--- a/app/src/main/java/io/legado/app/ui/association/ImportReplaceRuleActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/association/ImportReplaceRuleActivity.kt
@@ -10,15 +10,14 @@ import io.legado.app.databinding.ActivityTranslucenceBinding
 import io.legado.app.help.IntentDataHelp
 import io.legado.app.lib.dialogs.alert
 import io.legado.app.utils.toastOnUi
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 class ImportReplaceRuleActivity :
     VMBaseActivity<ActivityTranslucenceBinding, ImportReplaceRuleViewModel>(
         theme = Theme.Transparent
     ) {
 
-    override fun getViewBinding(): ActivityTranslucenceBinding {
-        return ActivityTranslucenceBinding.inflate(layoutInflater)
-    }
+    override val binding by viewBinding(ActivityTranslucenceBinding::inflate)
 
     override val viewModel: ImportReplaceRuleViewModel
             by viewModels()
diff --git a/app/src/main/java/io/legado/app/ui/association/ImportRssSourceActivity.kt b/app/src/main/java/io/legado/app/ui/association/ImportRssSourceActivity.kt
index a3fa20cee..724cd70be 100644
--- a/app/src/main/java/io/legado/app/ui/association/ImportRssSourceActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/association/ImportRssSourceActivity.kt
@@ -10,15 +10,14 @@ import io.legado.app.help.IntentDataHelp
 import io.legado.app.lib.dialogs.alert
 
 import io.legado.app.utils.toastOnUi
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 class ImportRssSourceActivity :
     VMBaseActivity<ActivityTranslucenceBinding, ImportRssSourceViewModel>(
         theme = Theme.Transparent
     ) {
 
-    override fun getViewBinding(): ActivityTranslucenceBinding {
-        return ActivityTranslucenceBinding.inflate(layoutInflater)
-    }
+    override val binding by viewBinding(ActivityTranslucenceBinding::inflate)
 
     override val viewModel: ImportRssSourceViewModel
             by viewModels()
diff --git a/app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookActivity.kt b/app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookActivity.kt
index 0f995ea8d..82b1915c4 100644
--- a/app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/arrange/ArrangeBookActivity.kt
@@ -26,6 +26,7 @@ import io.legado.app.ui.widget.recycler.ItemTouchCallback
 import io.legado.app.ui.widget.recycler.VerticalDivider
 import io.legado.app.utils.cnCompare
 import io.legado.app.utils.getPrefInt
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -36,6 +37,8 @@ class ArrangeBookActivity : VMBaseActivity<ActivityArrangeBookBinding, ArrangeBo
     SelectActionBar.CallBack,
     ArrangeBookAdapter.CallBack,
     GroupSelectDialog.CallBack {
+
+    override val binding by viewBinding(ActivityArrangeBookBinding::inflate)
     override val viewModel: ArrangeBookViewModel
             by viewModels()
     override val groupList: ArrayList<BookGroup> = arrayListOf()
@@ -47,10 +50,6 @@ class ArrangeBookActivity : VMBaseActivity<ActivityArrangeBookBinding, ArrangeBo
     private var menu: Menu? = null
     private var groupId: Long = -1
 
-    override fun getViewBinding(): ActivityArrangeBookBinding {
-        return ActivityArrangeBookBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         groupId = intent.getLongExtra("groupId", -1)
         launch {
diff --git a/app/src/main/java/io/legado/app/ui/book/audio/AudioPlayActivity.kt b/app/src/main/java/io/legado/app/ui/book/audio/AudioPlayActivity.kt
index f04555414..1209ca0c0 100644
--- a/app/src/main/java/io/legado/app/ui/book/audio/AudioPlayActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/audio/AudioPlayActivity.kt
@@ -28,6 +28,7 @@ import io.legado.app.ui.book.toc.TocActivityResult
 import io.legado.app.ui.widget.image.CoverImageView
 import io.legado.app.ui.widget.seekbar.SeekBarChangeListener
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import splitties.views.onLongClick
 import java.util.*
 
@@ -38,6 +39,7 @@ class AudioPlayActivity :
     VMBaseActivity<ActivityAudioPlayBinding, AudioPlayViewModel>(toolBarTheme = Theme.Dark),
     ChangeSourceDialog.CallBack {
 
+    override val binding by viewBinding(ActivityAudioPlayBinding::inflate)
     override val viewModel: AudioPlayViewModel
             by viewModels()
 
@@ -57,10 +59,6 @@ class AudioPlayActivity :
         }
     }
 
-    override fun getViewBinding(): ActivityAudioPlayBinding {
-        return ActivityAudioPlayBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         binding.titleBar.transparent()
         AudioPlay.titleData.observe(this, { binding.titleBar.title = it })
diff --git a/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt b/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
index 7016927b5..89d79e307 100644
--- a/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/cache/CacheActivity.kt
@@ -28,6 +28,7 @@ import io.legado.app.ui.document.FilePicker
 import io.legado.app.ui.document.FilePickerParam
 import io.legado.app.ui.widget.dialog.TextListDialog
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.launch
@@ -58,13 +59,9 @@ class CacheActivity : VMBaseActivity<ActivityCacheBookBinding, CacheViewModel>()
     private var exportPosition = -1
     private val groupList: ArrayList<BookGroup> = arrayListOf()
     private var groupId: Long = -1
-
+    override val binding by viewBinding(ActivityCacheBookBinding::inflate)
     override val viewModel: CacheViewModel by viewModels()
 
-    override fun getViewBinding(): ActivityCacheBookBinding {
-        return ActivityCacheBookBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         groupId = intent.getLongExtra("groupId", -1)
         launch {
diff --git a/app/src/main/java/io/legado/app/ui/book/explore/ExploreShowActivity.kt b/app/src/main/java/io/legado/app/ui/book/explore/ExploreShowActivity.kt
index 95f1a12bc..760df2c71 100644
--- a/app/src/main/java/io/legado/app/ui/book/explore/ExploreShowActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/explore/ExploreShowActivity.kt
@@ -13,20 +13,17 @@ import io.legado.app.ui.book.info.BookInfoActivity
 import io.legado.app.ui.widget.recycler.LoadMoreView
 import io.legado.app.ui.widget.recycler.VerticalDivider
 import io.legado.app.utils.startActivity
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 class ExploreShowActivity : VMBaseActivity<ActivityExploreShowBinding, ExploreShowViewModel>(),
     ExploreShowAdapter.CallBack {
-    override val viewModel: ExploreShowViewModel
-            by viewModels()
+    override val binding by viewBinding(ActivityExploreShowBinding::inflate)
+    override val viewModel: ExploreShowViewModel by viewModels()
 
     private lateinit var adapter: ExploreShowAdapter
     private lateinit var loadMoreView: LoadMoreView
     private var isLoading = true
 
-    override fun getViewBinding(): ActivityExploreShowBinding {
-        return ActivityExploreShowBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         binding.titleBar.title = intent.getStringExtra("exploreName")
         initRecyclerView()
diff --git a/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt b/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
index bb011df0b..7b1f1c5d6 100644
--- a/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/info/BookInfoActivity.kt
@@ -38,6 +38,7 @@ import io.legado.app.ui.book.source.edit.BookSourceEditActivity
 import io.legado.app.ui.book.toc.TocActivityResult
 import io.legado.app.ui.widget.image.CoverImageView
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -89,13 +90,9 @@ class BookInfoActivity :
         }
     }
 
-
+    override val binding by viewBinding(ActivityBookInfoBinding::inflate)
     override val viewModel: BookInfoViewModel by viewModels()
 
-    override fun getViewBinding(): ActivityBookInfoBinding {
-        return ActivityBookInfoBinding.inflate(layoutInflater)
-    }
-
     @SuppressLint("PrivateResource")
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         binding.titleBar.transparent()
diff --git a/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt b/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt
index 366296bc8..df0757e4e 100644
--- a/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/info/edit/BookInfoEditActivity.kt
@@ -16,6 +16,7 @@ import io.legado.app.lib.permission.Permissions
 import io.legado.app.lib.permission.PermissionsCompat
 import io.legado.app.ui.book.changecover.ChangeCoverDialog
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import java.io.File
 
 class BookInfoEditActivity :
@@ -29,13 +30,10 @@ class BookInfoEditActivity :
             }
         }
 
+    override val binding by viewBinding(ActivityBookInfoEditBinding::inflate)
     override val viewModel: BookInfoEditViewModel
             by viewModels()
 
-    override fun getViewBinding(): ActivityBookInfoEditBinding {
-        return ActivityBookInfoEditBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         viewModel.bookData.observe(this, { upView(it) })
         if (viewModel.bookData.value == null) {
diff --git a/app/src/main/java/io/legado/app/ui/book/local/ImportBookActivity.kt b/app/src/main/java/io/legado/app/ui/book/local/ImportBookActivity.kt
index 724152c15..98889e85e 100644
--- a/app/src/main/java/io/legado/app/ui/book/local/ImportBookActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/local/ImportBookActivity.kt
@@ -17,13 +17,14 @@ import io.legado.app.data.appDb
 import io.legado.app.databinding.ActivityImportBookBinding
 import io.legado.app.databinding.DialogEditTextBinding
 import io.legado.app.help.AppConfig
-import io.legado.app.lib.permission.Permissions
 import io.legado.app.lib.dialogs.alert
+import io.legado.app.lib.permission.Permissions
 import io.legado.app.lib.permission.PermissionsCompat
 import io.legado.app.lib.theme.backgroundColor
 import io.legado.app.ui.document.FilePicker
 import io.legado.app.ui.widget.SelectActionBar
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.Dispatchers.Main
 import kotlinx.coroutines.launch
@@ -57,13 +58,10 @@ class ImportBookActivity : VMBaseActivity<ActivityImportBookBinding, ImportBookV
         }
     }
 
+    override val binding by viewBinding(ActivityImportBookBinding::inflate)
     override val viewModel: ImportBookViewModel
             by viewModels()
 
-    override fun getViewBinding(): ActivityImportBookBinding {
-        return ActivityImportBookBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initView()
         initEvent()
diff --git a/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt b/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt
index e2d10bf9b..3d8456423 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/ReadBookBaseActivity.kt
@@ -34,6 +34,7 @@ import io.legado.app.ui.book.read.config.ClickActionConfigDialog
 import io.legado.app.ui.book.read.config.PaddingConfigDialog
 import io.legado.app.utils.getPrefString
 import io.legado.app.utils.requestInputMethod
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 /**
  * 阅读界面
@@ -41,14 +42,11 @@ import io.legado.app.utils.requestInputMethod
 abstract class ReadBookBaseActivity :
     VMBaseActivity<ActivityBookReadBinding, ReadBookViewModel>(imageBg = false) {
 
+    override val binding by viewBinding(ActivityBookReadBinding::inflate)
     override val viewModel: ReadBookViewModel
             by viewModels()
     var bottomDialog = 0
 
-    override fun getViewBinding(): ActivityBookReadBinding {
-        return ActivityBookReadBinding.inflate(layoutInflater)
-    }
-
     override fun onCreate(savedInstanceState: Bundle?) {
         ReadBook.msg = null
         setOrientation()
diff --git a/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt b/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt
index 1c7289729..ebee774f0 100644
--- a/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/search/SearchActivity.kt
@@ -27,6 +27,7 @@ import io.legado.app.ui.book.info.BookInfoActivity
 import io.legado.app.ui.book.source.manage.BookSourceActivity
 import io.legado.app.ui.widget.recycler.LoadMoreView
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -36,6 +37,7 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
     HistoryKeyAdapter.CallBack,
     SearchAdapter.CallBack {
 
+    override val binding by viewBinding(ActivityBookSearchBinding::inflate)
     override val viewModel: SearchViewModel
             by viewModels()
 
@@ -50,10 +52,6 @@ class SearchActivity : VMBaseActivity<ActivityBookSearchBinding, SearchViewModel
     private var precisionSearchMenuItem: MenuItem? = null
     private var groups = linkedSetOf<String>()
 
-    override fun getViewBinding(): ActivityBookSearchBinding {
-        return ActivityBookSearchBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         binding.llHistory.setBackgroundColor(backgroundColor)
         searchView = binding.titleBar.findViewById(R.id.search_view)
diff --git a/app/src/main/java/io/legado/app/ui/book/searchContent/SearchContentActivity.kt b/app/src/main/java/io/legado/app/ui/book/searchContent/SearchContentActivity.kt
index 4d89a1c64..a164ab184 100644
--- a/app/src/main/java/io/legado/app/ui/book/searchContent/SearchContentActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/searchContent/SearchContentActivity.kt
@@ -23,6 +23,7 @@ import io.legado.app.ui.widget.recycler.UpLinearLayoutManager
 import io.legado.app.ui.widget.recycler.VerticalDivider
 import io.legado.app.utils.ColorUtils
 import io.legado.app.utils.observeEvent
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -32,6 +33,7 @@ class SearchContentActivity :
     VMBaseActivity<ActivitySearchContentBinding, SearchContentViewModel>(),
     SearchContentAdapter.Callback {
 
+    override val binding by viewBinding(ActivitySearchContentBinding::inflate)
     override val viewModel: SearchContentViewModel
             by viewModels()
     lateinit var adapter: SearchContentAdapter
@@ -41,10 +43,6 @@ class SearchContentActivity :
     private var durChapterIndex = 0
     private var searchResultList: MutableList<SearchResult> = mutableListOf()
 
-    override fun getViewBinding(): ActivitySearchContentBinding {
-        return ActivitySearchContentBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         searchView = binding.titleBar.findViewById(R.id.search_view)
         val bbg = bottomBackground
diff --git a/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugActivity.kt b/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugActivity.kt
index 42f85da7c..20ba8db96 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/debug/BookSourceDebugActivity.kt
@@ -14,10 +14,12 @@ import io.legado.app.lib.theme.accentColor
 import io.legado.app.ui.qrcode.QrCodeResult
 import io.legado.app.ui.widget.dialog.TextDialog
 import io.legado.app.utils.toastOnUi
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.launch
 
 class BookSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, BookSourceDebugModel>() {
 
+    override val binding by viewBinding(ActivitySourceDebugBinding::inflate)
     override val viewModel: BookSourceDebugModel
             by viewModels()
 
@@ -29,10 +31,6 @@ class BookSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, BookS
         }
     }
 
-    override fun getViewBinding(): ActivitySourceDebugBinding {
-        return ActivitySourceDebugBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         searchView = binding.titleBar.findViewById(R.id.search_view)
         viewModel.init(intent.getStringExtra("key"))
diff --git a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
index 56b8d0fe4..2332bae61 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/edit/BookSourceEditActivity.kt
@@ -32,13 +32,15 @@ import io.legado.app.ui.qrcode.QrCodeResult
 import io.legado.app.ui.widget.KeyboardToolPop
 import io.legado.app.ui.widget.dialog.TextDialog
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlin.math.abs
 
 class BookSourceEditActivity :
     VMBaseActivity<ActivityBookSourceEditBinding, BookSourceEditViewModel>(false),
     KeyboardToolPop.CallBack {
-    override val viewModel: BookSourceEditViewModel
-            by viewModels()
+
+    override val binding by viewBinding(ActivityBookSourceEditBinding::inflate)
+    override val viewModel: BookSourceEditViewModel by viewModels()
 
     private val adapter = BookSourceEditAdapter()
     private val sourceEntities: ArrayList<EditEntity> = ArrayList()
@@ -65,10 +67,6 @@ class BookSourceEditActivity :
     private var mSoftKeyboardTool: PopupWindow? = null
     private var mIsSoftKeyBoardShowing = false
 
-    override fun getViewBinding(): ActivityBookSourceEditBinding {
-        return ActivityBookSourceEditBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initView()
         viewModel.initData(intent) {
diff --git a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
index f76e4705a..f2312ce86 100644
--- a/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/source/manage/BookSourceActivity.kt
@@ -39,6 +39,7 @@ import io.legado.app.ui.widget.recycler.DragSelectTouchHelper
 import io.legado.app.ui.widget.recycler.ItemTouchCallback
 import io.legado.app.ui.widget.recycler.VerticalDivider
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import java.io.File
 
 class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceViewModel>(),
@@ -46,8 +47,8 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
     BookSourceAdapter.CallBack,
     SelectActionBar.CallBack,
     SearchView.OnQueryTextListener {
-    override val viewModel: BookSourceViewModel
-            by viewModels()
+    override val binding by viewBinding(ActivityBookSourceBinding::inflate)
+    override val viewModel: BookSourceViewModel by viewModels()
     private val importRecordKey = "bookSourceRecordKey"
     private lateinit var adapter: BookSourceAdapter
     private lateinit var searchView: SearchView
@@ -89,10 +90,6 @@ class BookSourceActivity : VMBaseActivity<ActivityBookSourceBinding, BookSourceV
         }
     }
 
-    override fun getViewBinding(): ActivityBookSourceBinding {
-        return ActivityBookSourceBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         searchView = binding.titleBar.findViewById(R.id.search_view)
         initRecyclerView()
diff --git a/app/src/main/java/io/legado/app/ui/book/toc/TocActivity.kt b/app/src/main/java/io/legado/app/ui/book/toc/TocActivity.kt
index e9138501d..d6374a1cf 100644
--- a/app/src/main/java/io/legado/app/ui/book/toc/TocActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/book/toc/TocActivity.kt
@@ -19,20 +19,18 @@ import io.legado.app.lib.theme.ATH
 import io.legado.app.lib.theme.accentColor
 import io.legado.app.lib.theme.primaryTextColor
 import io.legado.app.utils.gone
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import io.legado.app.utils.visible
 
 
 class TocActivity : VMBaseActivity<ActivityChapterListBinding, TocViewModel>() {
-    override val viewModel: TocViewModel
-            by viewModels()
+
+    override val binding by viewBinding(ActivityChapterListBinding::inflate)
+    override val viewModel: TocViewModel by viewModels()
 
     private lateinit var tabLayout: TabLayout
     private var searchView: SearchView? = null
 
-    override fun getViewBinding(): ActivityChapterListBinding {
-        return ActivityChapterListBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         tabLayout = binding.titleBar.findViewById(R.id.tab_layout)
         tabLayout.isTabIndicatorFullWidth = false
diff --git a/app/src/main/java/io/legado/app/ui/config/ConfigActivity.kt b/app/src/main/java/io/legado/app/ui/config/ConfigActivity.kt
index 2d7ab0cbd..6552a5553 100644
--- a/app/src/main/java/io/legado/app/ui/config/ConfigActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/config/ConfigActivity.kt
@@ -8,14 +8,12 @@ import io.legado.app.constant.EventBus
 import io.legado.app.databinding.ActivityConfigBinding
 
 import io.legado.app.utils.observeEvent
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 class ConfigActivity : VMBaseActivity<ActivityConfigBinding, ConfigViewModel>() {
-    override val viewModel: ConfigViewModel
-            by viewModels()
 
-    override fun getViewBinding(): ActivityConfigBinding {
-        return ActivityConfigBinding.inflate(layoutInflater)
-    }
+    override val binding by viewBinding(ActivityConfigBinding::inflate)
+    override val viewModel: ConfigViewModel by viewModels()
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         intent.getIntExtra("configType", -1).let {
diff --git a/app/src/main/java/io/legado/app/ui/document/FilePickerActivity.kt b/app/src/main/java/io/legado/app/ui/document/FilePickerActivity.kt
index 1f7b56939..08bc51275 100644
--- a/app/src/main/java/io/legado/app/ui/document/FilePickerActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/document/FilePickerActivity.kt
@@ -14,6 +14,7 @@ import io.legado.app.lib.dialogs.alert
 import io.legado.app.lib.permission.Permissions
 import io.legado.app.lib.permission.PermissionsCompat
 import io.legado.app.utils.isContentScheme
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import java.io.File
 
 class FilePickerActivity :
@@ -21,6 +22,8 @@ class FilePickerActivity :
         theme = Theme.Transparent
     ), FilePickerDialog.CallBack {
 
+    override val binding by viewBinding(ActivityTranslucenceBinding::inflate)
+
     private val selectDocTree =
         registerForActivityResult(ActivityResultContracts.OpenDocumentTree()) {
             it ?: let {
@@ -41,10 +44,6 @@ class FilePickerActivity :
         onResult(Intent().setData(it))
     }
 
-    override fun getViewBinding(): ActivityTranslucenceBinding {
-        return ActivityTranslucenceBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         val mode = intent.getIntExtra("mode", 0)
         val allowExtensions = intent.getStringArrayExtra("allowExtensions")
diff --git a/app/src/main/java/io/legado/app/ui/login/SourceLoginActivity.kt b/app/src/main/java/io/legado/app/ui/login/SourceLoginActivity.kt
index d4ee0dd23..af9522ec7 100644
--- a/app/src/main/java/io/legado/app/ui/login/SourceLoginActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/login/SourceLoginActivity.kt
@@ -13,19 +13,17 @@ import io.legado.app.base.BaseActivity
 import io.legado.app.databinding.ActivitySourceLoginBinding
 import io.legado.app.help.http.CookieStore
 import io.legado.app.utils.snackbar
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 
 class SourceLoginActivity : BaseActivity<ActivitySourceLoginBinding>() {
 
+    override val binding by viewBinding(ActivitySourceLoginBinding::inflate)
     var sourceUrl: String? = null
     var loginUrl: String? = null
     var userAgent: String? = null
     var checking = false
 
-    override fun getViewBinding(): ActivitySourceLoginBinding {
-        return ActivitySourceLoginBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         sourceUrl = intent.getStringExtra("sourceUrl")
         loginUrl = intent.getStringExtra("loginUrl")
diff --git a/app/src/main/java/io/legado/app/ui/main/MainActivity.kt b/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
index c9ea98bd0..349357aa6 100644
--- a/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/main/MainActivity.kt
@@ -36,11 +36,14 @@ import io.legado.app.ui.main.rss.RssFragment
 import io.legado.app.ui.widget.dialog.TextDialog
 import io.legado.app.utils.observeEvent
 import io.legado.app.utils.toastOnUi
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 
 class MainActivity : VMBaseActivity<ActivityMainBinding, MainViewModel>(),
     BottomNavigationView.OnNavigationItemSelectedListener,
     BottomNavigationView.OnNavigationItemReselectedListener {
+
+    override val binding by viewBinding(ActivityMainBinding::inflate)
     override val viewModel: MainViewModel by viewModels()
     private var exitTime: Long = 0
     private var bookshelfReselected: Long = 0
@@ -50,10 +53,6 @@ class MainActivity : VMBaseActivity<ActivityMainBinding, MainViewModel>(),
     private var bottomMenuCount = 2
     private val realPositions = arrayOf(0, 1, 2, 3)
 
-    override fun getViewBinding(): ActivityMainBinding {
-        return ActivityMainBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         upBottomMenu()
         binding.apply {
diff --git a/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt b/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt
index 93680630e..dcabe5b8c 100644
--- a/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/qrcode/QrCodeActivity.kt
@@ -13,9 +13,12 @@ import io.legado.app.base.BaseActivity
 import io.legado.app.databinding.ActivityQrcodeCaptureBinding
 import io.legado.app.utils.QRCodeUtils
 import io.legado.app.utils.readBytes
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 class QrCodeActivity : BaseActivity<ActivityQrcodeCaptureBinding>(), OnScanResultCallback {
 
+    override val binding by viewBinding(ActivityQrcodeCaptureBinding::inflate)
+
     private val selectQrImage = registerForActivityResult(ActivityResultContracts.GetContent()) {
         it.readBytes(this)?.let { bytes ->
             val bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.size)
@@ -23,10 +26,6 @@ class QrCodeActivity : BaseActivity<ActivityQrcodeCaptureBinding>(), OnScanResul
         }
     }
 
-    override fun getViewBinding(): ActivityQrcodeCaptureBinding {
-        return ActivityQrcodeCaptureBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         val fTag = "qrCodeFragment"
         val qrCodeFragment = QrCodeFragment()
diff --git a/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleActivity.kt b/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleActivity.kt
index f0097b62b..983d4480e 100644
--- a/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/replace/ReplaceRuleActivity.kt
@@ -38,6 +38,7 @@ import io.legado.app.ui.widget.recycler.DragSelectTouchHelper
 import io.legado.app.ui.widget.recycler.ItemTouchCallback
 import io.legado.app.ui.widget.recycler.VerticalDivider
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import java.io.File
 
 /**
@@ -48,6 +49,7 @@ class ReplaceRuleActivity : VMBaseActivity<ActivityReplaceRuleBinding, ReplaceRu
     PopupMenu.OnMenuItemClickListener,
     SelectActionBar.CallBack,
     ReplaceRuleAdapter.CallBack {
+    override val binding by viewBinding(ActivityReplaceRuleBinding::inflate)
     override val viewModel: ReplaceRuleViewModel by viewModels()
     private val importRecordKey = "replaceRuleRecordKey"
     private lateinit var adapter: ReplaceRuleAdapter
@@ -93,10 +95,6 @@ class ReplaceRuleActivity : VMBaseActivity<ActivityReplaceRuleBinding, ReplaceRu
         }
     }
 
-    override fun getViewBinding(): ActivityReplaceRuleBinding {
-        return ActivityReplaceRuleBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         searchView = binding.titleBar.findViewById(R.id.search_view)
         initRecyclerView()
diff --git a/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt b/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
index 7f181fbc2..d91222bd6 100644
--- a/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/replace/edit/ReplaceEditActivity.kt
@@ -21,6 +21,7 @@ import io.legado.app.ui.widget.KeyboardToolPop
 import io.legado.app.ui.widget.dialog.TextDialog
 import io.legado.app.utils.getSize
 import io.legado.app.utils.toastOnUi
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlin.math.abs
 
 /**
@@ -50,10 +51,7 @@ class ReplaceEditActivity :
 
     }
 
-    override fun getViewBinding(): ActivityReplaceEditBinding {
-        return ActivityReplaceEditBinding.inflate(layoutInflater)
-    }
-
+    override val binding by viewBinding(ActivityReplaceEditBinding::inflate)
     override val viewModel: ReplaceEditViewModel
             by viewModels()
 
diff --git a/app/src/main/java/io/legado/app/ui/rss/article/RssSortActivity.kt b/app/src/main/java/io/legado/app/ui/rss/article/RssSortActivity.kt
index 81947f41b..2e88e462c 100644
--- a/app/src/main/java/io/legado/app/ui/rss/article/RssSortActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/article/RssSortActivity.kt
@@ -15,10 +15,12 @@ import io.legado.app.base.VMBaseActivity
 import io.legado.app.databinding.ActivityRssArtivlesBinding
 import io.legado.app.ui.rss.source.edit.RssSourceEditActivity
 import io.legado.app.utils.gone
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import io.legado.app.utils.visible
 
 class RssSortActivity : VMBaseActivity<ActivityRssArtivlesBinding, RssSortViewModel>() {
 
+    override val binding by viewBinding(ActivityRssArtivlesBinding::inflate)
     override val viewModel: RssSortViewModel
             by viewModels()
     private lateinit var adapter: TabFragmentPageAdapter
@@ -33,10 +35,6 @@ class RssSortActivity : VMBaseActivity<ActivityRssArtivlesBinding, RssSortViewMo
         }
     }
 
-    override fun getViewBinding(): ActivityRssArtivlesBinding {
-        return ActivityRssArtivlesBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         adapter = TabFragmentPageAdapter()
         binding.viewPager.adapter = adapter
diff --git a/app/src/main/java/io/legado/app/ui/rss/favorites/RssFavoritesActivity.kt b/app/src/main/java/io/legado/app/ui/rss/favorites/RssFavoritesActivity.kt
index e317ae734..3f90252b0 100644
--- a/app/src/main/java/io/legado/app/ui/rss/favorites/RssFavoritesActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/favorites/RssFavoritesActivity.kt
@@ -10,18 +10,16 @@ import io.legado.app.databinding.ActivityRssFavoritesBinding
 import io.legado.app.ui.rss.read.ReadRssActivity
 import io.legado.app.ui.widget.recycler.VerticalDivider
 import io.legado.app.utils.startActivity
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 
 
 class RssFavoritesActivity : BaseActivity<ActivityRssFavoritesBinding>(),
     RssFavoritesAdapter.CallBack {
 
+    override val binding by viewBinding(ActivityRssFavoritesBinding::inflate)
     private var liveData: LiveData<List<RssStar>>? = null
     private lateinit var adapter: RssFavoritesAdapter
 
-    override fun getViewBinding(): ActivityRssFavoritesBinding {
-        return ActivityRssFavoritesBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initView()
         initData()
diff --git a/app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt b/app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt
index 95aaf8325..c4cde5610 100644
--- a/app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/read/ReadRssActivity.kt
@@ -26,6 +26,7 @@ import io.legado.app.ui.association.ImportRssSourceActivity
 import io.legado.app.ui.document.FilePicker
 import io.legado.app.ui.document.FilePickerParam
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.launch
 import org.apache.commons.text.StringEscapeUtils
 import org.jsoup.Jsoup
@@ -35,8 +36,8 @@ import splitties.systemservices.downloadManager
 class ReadRssActivity : VMBaseActivity<ActivityRssReadBinding, ReadRssViewModel>(false),
     ReadRssViewModel.CallBack {
 
-    override val viewModel: ReadRssViewModel
-            by viewModels()
+    override val binding by viewBinding(ActivityRssReadBinding::inflate)
+    override val viewModel: ReadRssViewModel by viewModels()
     private val imagePathKey = ""
     private var starMenuItem: MenuItem? = null
     private var ttsMenuItem: MenuItem? = null
@@ -47,10 +48,6 @@ class ReadRssActivity : VMBaseActivity<ActivityRssReadBinding, ReadRssViewModel>
         viewModel.saveImage(webPic, it.toString())
     }
 
-    override fun getViewBinding(): ActivityRssReadBinding {
-        return ActivityRssReadBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         viewModel.callBack = this
         binding.titleBar.title = intent.getStringExtra("title")
diff --git a/app/src/main/java/io/legado/app/ui/rss/source/debug/RssSourceDebugActivity.kt b/app/src/main/java/io/legado/app/ui/rss/source/debug/RssSourceDebugActivity.kt
index 4b790e5c1..a03483a7d 100644
--- a/app/src/main/java/io/legado/app/ui/rss/source/debug/RssSourceDebugActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/source/debug/RssSourceDebugActivity.kt
@@ -14,20 +14,17 @@ import io.legado.app.ui.widget.dialog.TextDialog
 
 import io.legado.app.utils.gone
 import io.legado.app.utils.toastOnUi
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.launch
 
 
 class RssSourceDebugActivity : VMBaseActivity<ActivitySourceDebugBinding, RssSourceDebugModel>() {
 
-    override val viewModel: RssSourceDebugModel
-            by viewModels()
+    override val binding by viewBinding(ActivitySourceDebugBinding::inflate)
+    override val viewModel: RssSourceDebugModel by viewModels()
 
     private lateinit var adapter: RssSourceDebugAdapter
 
-    override fun getViewBinding(): ActivitySourceDebugBinding {
-        return ActivitySourceDebugBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initRecyclerView()
         initSearchView()
diff --git a/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt b/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt
index a738a4633..97df39a12 100644
--- a/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/source/edit/RssSourceEditActivity.kt
@@ -25,6 +25,7 @@ import io.legado.app.ui.rss.source.debug.RssSourceDebugActivity
 import io.legado.app.ui.widget.KeyboardToolPop
 import io.legado.app.ui.widget.dialog.TextDialog
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlin.math.abs
 
 class RssSourceEditActivity :
@@ -32,6 +33,7 @@ class RssSourceEditActivity :
     ViewTreeObserver.OnGlobalLayoutListener,
     KeyboardToolPop.CallBack {
 
+    override val binding by viewBinding(ActivityRssSourceEditBinding::inflate)
     private var mSoftKeyboardTool: PopupWindow? = null
     private var mIsSoftKeyBoardShowing = false
     private val adapter = RssSourceEditAdapter()
@@ -44,10 +46,6 @@ class RssSourceEditActivity :
         }
     }
 
-    override fun getViewBinding(): ActivityRssSourceEditBinding {
-        return ActivityRssSourceEditBinding.inflate(layoutInflater)
-    }
-
     override val viewModel: RssSourceEditViewModel
             by viewModels()
 
diff --git a/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt b/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt
index 6565ab242..abeef35b2 100644
--- a/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/source/manage/RssSourceActivity.kt
@@ -34,6 +34,7 @@ import io.legado.app.ui.widget.recycler.DragSelectTouchHelper
 import io.legado.app.ui.widget.recycler.ItemTouchCallback
 import io.legado.app.ui.widget.recycler.VerticalDivider
 import io.legado.app.utils.*
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import java.io.File
 
 /**
@@ -44,6 +45,7 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
     SelectActionBar.CallBack,
     RssSourceAdapter.CallBack {
 
+    override val binding by viewBinding(ActivityRssSourceBinding::inflate)
     override val viewModel: RssSourceViewModel
             by viewModels()
     private val importRecordKey = "rssSourceRecordKey"
@@ -82,10 +84,6 @@ class RssSourceActivity : VMBaseActivity<ActivityRssSourceBinding, RssSourceView
         }
     }
 
-    override fun getViewBinding(): ActivityRssSourceBinding {
-        return ActivityRssSourceBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initRecyclerView()
         initSearchView()
diff --git a/app/src/main/java/io/legado/app/ui/rss/subscription/RuleSubActivity.kt b/app/src/main/java/io/legado/app/ui/rss/subscription/RuleSubActivity.kt
index 5bfd50d57..652a8c94c 100644
--- a/app/src/main/java/io/legado/app/ui/rss/subscription/RuleSubActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/rss/subscription/RuleSubActivity.kt
@@ -19,6 +19,7 @@ import io.legado.app.ui.association.ImportRssSourceActivity
 import io.legado.app.ui.widget.recycler.ItemTouchCallback
 import io.legado.app.utils.startActivity
 import io.legado.app.utils.toastOnUi
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
@@ -29,13 +30,10 @@ import kotlinx.coroutines.withContext
 class RuleSubActivity : BaseActivity<ActivityRuleSubBinding>(),
     RuleSubAdapter.Callback {
 
+    override val binding by viewBinding(ActivityRuleSubBinding::inflate)
     private lateinit var adapter: RuleSubAdapter
     private var liveData: LiveData<List<RuleSub>>? = null
 
-    override fun getViewBinding(): ActivityRuleSubBinding {
-        return ActivityRuleSubBinding.inflate(layoutInflater)
-    }
-
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         initView()
         initData()
diff --git a/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt b/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
index 11b55b24d..75e9adc12 100644
--- a/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
+++ b/app/src/main/java/io/legado/app/ui/welcome/WelcomeActivity.kt
@@ -15,13 +15,12 @@ import io.legado.app.ui.book.read.ReadBookActivity
 import io.legado.app.ui.main.MainActivity
 import io.legado.app.utils.getPrefBoolean
 import io.legado.app.utils.startActivity
+import io.legado.app.utils.viewbindingdelegate.viewBinding
 import java.util.concurrent.TimeUnit
 
 open class WelcomeActivity : BaseActivity<ActivityWelcomeBinding>() {
 
-    override fun getViewBinding(): ActivityWelcomeBinding {
-        return ActivityWelcomeBinding.inflate(layoutInflater)
-    }
+    override val binding by viewBinding(ActivityWelcomeBinding::inflate)
 
     override fun onActivityCreated(savedInstanceState: Bundle?) {
         binding.ivBook.setColorFilter(accentColor)
diff --git a/app/src/main/java/io/legado/app/utils/viewbindingdelegate/ActivityViewBindings.kt b/app/src/main/java/io/legado/app/utils/viewbindingdelegate/ActivityViewBindings.kt
index fb42420b9..5ace190cc 100644
--- a/app/src/main/java/io/legado/app/utils/viewbindingdelegate/ActivityViewBindings.kt
+++ b/app/src/main/java/io/legado/app/utils/viewbindingdelegate/ActivityViewBindings.kt
@@ -2,59 +2,12 @@
 
 package io.legado.app.utils.viewbindingdelegate
 
-import android.view.View
-import androidx.annotation.IdRes
+import android.view.LayoutInflater
 import androidx.core.app.ComponentActivity
 import androidx.viewbinding.ViewBinding
 
-private class ActivityViewBindingProperty<A : ComponentActivity, T : ViewBinding>(
-    viewBinder: (A) -> T
-) : ViewBindingProperty<A, T>(viewBinder) {
-
-    override fun getLifecycleOwner(thisRef: A) = thisRef
-}
-
-/**
- * Create new [ViewBinding] associated with the [Activity][ComponentActivity] and allow customize how
- * a [View] will be bounded to the view binding.
- */
-@JvmName("viewBindingActivity")
-public fun <A : ComponentActivity, T : ViewBinding> ComponentActivity.viewBinding(
-    viewBinder: (A) -> T
-): ViewBindingProperty<A, T> {
-    return ActivityViewBindingProperty(viewBinder)
-}
-
-/**
- * Create new [ViewBinding] associated with the [Activity][ComponentActivity] and allow customize how
- * a [View] will be bounded to the view binding.
- */
-@JvmName("viewBindingActivity")
-public inline fun <A : ComponentActivity, T : ViewBinding> ComponentActivity.viewBinding(
-    crossinline vbFactory: (View) -> T,
-    crossinline viewProvider: (A) -> View
-): ViewBindingProperty<A, T> {
-    return viewBinding { activity: A -> vbFactory(viewProvider(activity)) }
-}
-
-/**
- * Create new [ViewBinding] associated with the [Activity][this] and allow customize how
- * a [View] will be bounded to the view binding.
- *
- * @param vbFactory Function that create new instance of [ViewBinding]. `MyViewBinding::bind` can be used
- * @param viewBindingRootId Root view's id that will be used as root for the view binding
- */
-@Suppress("unused")
-@JvmName("viewBindingActivity")
-public inline fun <T : ViewBinding> ComponentActivity.viewBinding(
-    crossinline vbFactory: (View) -> T,
-    @IdRes viewBindingRootId: Int
-): ViewBindingProperty<ComponentActivity, T> {
-    return viewBinding { activity: ComponentActivity ->
-        vbFactory(
-            activity.findViewById(
-                viewBindingRootId
-            )
-        )
+inline fun <T : ViewBinding> ComponentActivity.viewBinding(crossinline bindingInflater: (LayoutInflater) -> T) =
+    lazy(LazyThreadSafetyMode.SYNCHRONIZED) {
+        val invoke = bindingInflater.invoke(layoutInflater)
+        invoke
     }
-}
\ No newline at end of file