diff --git a/V2rayNG/app/build.gradle b/V2rayNG/app/build.gradle
index 029a7603f..4696c7c9d 100644
--- a/V2rayNG/app/build.gradle
+++ b/V2rayNG/app/build.gradle
@@ -64,6 +64,10 @@ android {
                             1000000 + android.defaultConfig.versionCode
         }
     }
+
+    buildFeatures {
+        viewBinding true
+    }
 }
 
 dependencies {
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/LogcatActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/LogcatActivity.kt
index 8b4895d77..146884fa9 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/LogcatActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/LogcatActivity.kt
@@ -9,9 +9,9 @@ import android.view.MenuItem
 import android.view.View
 import com.v2ray.ang.AppConfig.ANG_PACKAGE
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ActivityLogcatBinding
 import com.v2ray.ang.extension.toast
 import com.v2ray.ang.util.Utils
-import kotlinx.android.synthetic.main.activity_logcat.*
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
@@ -19,10 +19,13 @@ import java.io.IOException
 import java.util.LinkedHashSet
 
 class LogcatActivity : BaseActivity() {
+    private lateinit var binding: ActivityLogcatBinding
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_logcat)
+        binding = ActivityLogcatBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
 
         title = getString(R.string.title_logcat)
 
@@ -33,7 +36,7 @@ class LogcatActivity : BaseActivity() {
     private fun logcat(shouldFlushLog: Boolean) {
 
         try {
-            pb_waiting.visibility = View.VISIBLE
+            binding.pbWaiting.visibility = View.VISIBLE
 
             GlobalScope.launch(Dispatchers.Default) {
                 if (shouldFlushLog) {
@@ -56,10 +59,10 @@ class LogcatActivity : BaseActivity() {
 //                val allText = bufferedReader.use(BufferedReader::readText)
                 val allText = process.inputStream.bufferedReader().use { it.readText() }
                 launch(Dispatchers.Main) {
-                    tv_logcat.text = allText
-                    tv_logcat.movementMethod = ScrollingMovementMethod()
-                    pb_waiting.visibility = View.GONE
-                    Handler(Looper.getMainLooper()).post { sv_logcat.fullScroll(View.FOCUS_DOWN) }
+                    binding.tvLogcat.text = allText
+                    binding.tvLogcat.movementMethod = ScrollingMovementMethod()
+                    binding.pbWaiting.visibility = View.GONE
+                    Handler(Looper.getMainLooper()).post { binding.svLogcat.fullScroll(View.FOCUS_DOWN) }
                 }
             }
         } catch (e: IOException) {
@@ -74,7 +77,7 @@ class LogcatActivity : BaseActivity() {
 
     override fun onOptionsItemSelected(item: MenuItem) = when (item.itemId) {
         R.id.copy_all -> {
-            Utils.setClipboard(this, tv_logcat.text.toString())
+            Utils.setClipboard(this, binding.tvLogcat.text.toString())
             toast(R.string.toast_success)
             true
         }
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt
index 17a2c1a76..5a7b1f5fe 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainActivity.kt
@@ -23,6 +23,7 @@ import com.v2ray.ang.AppConfig
 import com.v2ray.ang.AppConfig.ANG_PACKAGE
 import com.v2ray.ang.BuildConfig
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ActivityMainBinding
 import com.v2ray.ang.dto.EConfigType
 import com.v2ray.ang.extension.toast
 import com.v2ray.ang.helper.SimpleItemTouchHelperCallback
@@ -31,7 +32,6 @@ import com.v2ray.ang.util.AngConfigManager
 import com.v2ray.ang.util.MmkvManager
 import com.v2ray.ang.util.Utils
 import com.v2ray.ang.viewmodel.MainViewModel
-import kotlinx.android.synthetic.main.activity_main.*
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
@@ -49,6 +49,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
         private const val REQUEST_FILE_CHOOSER = 2
         private const val REQUEST_SCAN_URL = 3
     }
+    private lateinit var binding: ActivityMainBinding
 
     private val adapter by lazy { MainRecyclerAdapter(this) }
     private val mainStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_MAIN, MMKV.MULTI_PROCESS_MODE) }
@@ -58,11 +59,13 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
         title = getString(R.string.title_server)
-        setSupportActionBar(toolbar)
+        setSupportActionBar(binding.toolbar)
 
-        fab.setOnClickListener {
+        binding.fab.setOnClickListener {
             if (mainViewModel.isRunning.value == true) {
                 Utils.stopVService(this)
             } else if (settingsStorage?.decodeString(AppConfig.PREF_MODE) ?: "VPN" == "VPN") {
@@ -76,30 +79,30 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                 startV2Ray()
             }
         }
-        layout_test.setOnClickListener {
+        binding.layoutTest.setOnClickListener {
             if (mainViewModel.isRunning.value == true) {
-                tv_test_state.text = getString(R.string.connection_test_testing)
+                binding.tvTestState.text = getString(R.string.connection_test_testing)
                 mainViewModel.testCurrentServerRealPing()
             } else {
 //                tv_test_state.text = getString(R.string.connection_test_fail)
             }
         }
 
-        recycler_view.setHasFixedSize(true)
-        recycler_view.layoutManager = LinearLayoutManager(this)
-        recycler_view.adapter = adapter
+        binding.recyclerView.setHasFixedSize(true)
+        binding.recyclerView.layoutManager = LinearLayoutManager(this)
+        binding.recyclerView.adapter = adapter
 
         val callback = SimpleItemTouchHelperCallback(adapter)
         mItemTouchHelper = ItemTouchHelper(callback)
-        mItemTouchHelper?.attachToRecyclerView(recycler_view)
+        mItemTouchHelper?.attachToRecyclerView(binding.recyclerView)
 
 
         val toggle = ActionBarDrawerToggle(
-                this, drawer_layout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close)
-        drawer_layout.addDrawerListener(toggle)
+                this, binding.drawerLayout, binding.toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close)
+        binding.drawerLayout.addDrawerListener(toggle)
         toggle.syncState()
-        nav_view.setNavigationItemSelectedListener(this)
-        version.text = "v${BuildConfig.VERSION_NAME} (${Libv2ray.checkVersionX()})"
+        binding.navView.setNavigationItemSelectedListener(this)
+        binding.version.text = "v${BuildConfig.VERSION_NAME} (${Libv2ray.checkVersionX()})"
 
         setupViewModelObserver()
         migrateLegacy()
@@ -114,18 +117,18 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                 adapter.notifyDataSetChanged()
             }
         })
-        mainViewModel.updateTestResultAction.observe(this, { tv_test_state.text = it })
+        mainViewModel.updateTestResultAction.observe(this, { binding.tvTestState.text = it })
         mainViewModel.isRunning.observe(this, {
             val isRunning = it ?: return@observe
             adapter.isRunning = isRunning
             if (isRunning) {
-                fab.setImageResource(R.drawable.ic_v)
-                tv_test_state.text = getString(R.string.connection_connected)
-                layout_test.isFocusable = true
+                binding.fab.setImageResource(R.drawable.ic_v)
+                binding.tvTestState.text = getString(R.string.connection_connected)
+                binding.layoutTest.isFocusable = true
             } else {
-                fab.setImageResource(R.drawable.ic_v_idle)
-                tv_test_state.text = getString(R.string.connection_not_connected)
-                layout_test.isFocusable = false
+                binding.fab.setImageResource(R.drawable.ic_v_idle)
+                binding.tvTestState.text = getString(R.string.connection_not_connected)
+                binding.layoutTest.isFocusable = false
             }
             hideCircle()
         })
@@ -505,7 +508,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
     }
 
     fun showCircle() {
-        fabProgressCircle?.show()
+        binding.fabProgressCircle?.show()
     }
 
     fun hideCircle() {
@@ -513,8 +516,8 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
             Observable.timer(300, TimeUnit.MILLISECONDS)
                     .observeOn(AndroidSchedulers.mainThread())
                     .subscribe {
-                        if (fabProgressCircle.isShown) {
-                            fabProgressCircle.hide()
+                        if (binding.fabProgressCircle.isShown) {
+                            binding.fabProgressCircle.hide()
                         }
                     }
         } catch (e: Exception) {
@@ -522,8 +525,8 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
     }
 
     override fun onBackPressed() {
-        if (drawer_layout.isDrawerOpen(GravityCompat.START)) {
-            drawer_layout.closeDrawer(GravityCompat.START)
+        if (binding.drawerLayout.isDrawerOpen(GravityCompat.START)) {
+            binding.drawerLayout.closeDrawer(GravityCompat.START)
         } else {
             super.onBackPressed()
         }
@@ -553,7 +556,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                 startActivity(Intent(this, LogcatActivity::class.java))
             }
         }
-        drawer_layout.closeDrawer(GravityCompat.START)
+        binding.drawerLayout.closeDrawer(GravityCompat.START)
         return true
     }
 }
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainRecyclerAdapter.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainRecyclerAdapter.kt
index 8cf548a3a..5538c695d 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainRecyclerAdapter.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/MainRecyclerAdapter.kt
@@ -12,6 +12,9 @@ import com.google.gson.Gson
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ItemQrcodeBinding
+import com.v2ray.ang.databinding.ItemRecyclerFooterBinding
+import com.v2ray.ang.databinding.ItemRecyclerMainBinding
 import com.v2ray.ang.dto.EConfigType
 import com.v2ray.ang.dto.SubscriptionItem
 import com.v2ray.ang.extension.toast
@@ -21,8 +24,6 @@ import com.v2ray.ang.service.V2RayServiceManager
 import com.v2ray.ang.util.AngConfigManager
 import com.v2ray.ang.util.MmkvManager
 import com.v2ray.ang.util.Utils
-import kotlinx.android.synthetic.main.item_qrcode.view.*
-import kotlinx.android.synthetic.main.item_recycler_main.view.*
 import rx.Observable
 import rx.android.schedulers.AndroidSchedulers
 import java.util.concurrent.TimeUnit
@@ -51,34 +52,34 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
             val outbound = config.getProxyOutbound()
             val aff = MmkvManager.decodeServerAffiliationInfo(guid)
 
-            holder.name.text = config.remarks
-            holder.radio.isChecked = guid == mainStorage?.decodeString(MmkvManager.KEY_SELECTED_SERVER)
+            holder.itemMainBinding.tvName.text = config.remarks
+            holder.itemMainBinding.btnRadio.isChecked = guid == mainStorage?.decodeString(MmkvManager.KEY_SELECTED_SERVER)
             holder.itemView.setBackgroundColor(Color.TRANSPARENT)
-            holder.test_result.text = aff?.getTestDelayString() ?: ""
+            holder.itemMainBinding.tvTestResult.text = aff?.getTestDelayString() ?: ""
             if (aff?.testDelayMillis?:0L < 0L) {
-                holder.test_result.setTextColor(ContextCompat.getColor(mActivity, android.R.color.holo_red_dark))
+                holder.itemMainBinding.tvTestResult.setTextColor(ContextCompat.getColor(mActivity, android.R.color.holo_red_dark))
             } else {
-                holder.test_result.setTextColor(ContextCompat.getColor(mActivity, R.color.colorPing))
+                holder.itemMainBinding.tvTestResult.setTextColor(ContextCompat.getColor(mActivity, R.color.colorPing))
             }
-            holder.subscription.text = ""
+            holder.itemMainBinding.tvSubscription.text = ""
             val json = subStorage?.decodeString(config.subscriptionId)
             if (!json.isNullOrBlank()) {
                 val sub = Gson().fromJson(json, SubscriptionItem::class.java)
-                holder.subscription.text = sub.remarks
+                holder.itemMainBinding.tvSubscription.text = sub.remarks
             }
 
             var shareOptions = share_method.asList()
             if (config.configType == EConfigType.CUSTOM) {
-                holder.type.text = mActivity.getString(R.string.server_customize_config)
+                holder.itemMainBinding.tvType.text = mActivity.getString(R.string.server_customize_config)
                 shareOptions = shareOptions.takeLast(1)
             } else if (config.configType == EConfigType.VLESS) {
-                holder.type.text = config.configType.name
+                holder.itemMainBinding.tvType.text = config.configType.name
             } else {
-                holder.type.text = config.configType.name.toLowerCase()
+                holder.itemMainBinding.tvType.text = config.configType.name.toLowerCase()
             }
-            holder.statistics.text = "${outbound?.getServerAddress()} : ${outbound?.getServerPort()}"
+            holder.itemMainBinding.tvStatistics.text = "${outbound?.getServerAddress()} : ${outbound?.getServerPort()}"
 
-            holder.layout_share.setOnClickListener {
+            holder.itemMainBinding.layoutShare.setOnClickListener {
                 AlertDialog.Builder(mActivity).setItems(shareOptions.toTypedArray()) { _, i ->
                     try {
                         when (i) {
@@ -86,9 +87,9 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
                                 if (config.configType == EConfigType.CUSTOM) {
                                     shareFullContent(guid)
                                 } else {
-                                    val iv = LayoutInflater.from(mActivity).inflate(R.layout.item_qrcode, null)
-                                    iv.iv_qcode.setImageBitmap(AngConfigManager.share2QRCode(guid))
-                                    AlertDialog.Builder(mActivity).setView(iv).show()
+                                    val ivBinding = ItemQrcodeBinding.inflate(LayoutInflater.from(mActivity))
+                                    ivBinding.ivQcode.setImageBitmap(AngConfigManager.share2QRCode(guid))
+                                    AlertDialog.Builder(mActivity).setView(ivBinding.root).show()
                                 }
                             }
                             1 -> {
@@ -107,7 +108,7 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
                 }.show()
             }
 
-            holder.layout_edit.setOnClickListener {
+            holder.itemMainBinding.layoutEdit.setOnClickListener {
                 val intent = Intent().putExtra("guid", guid)
                         .putExtra("isRunning", isRunning)
                 if (config.configType == EConfigType.CUSTOM) {
@@ -116,7 +117,7 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
                     mActivity.startActivity(intent.setClass(mActivity, ServerActivity::class.java))
                 }
             }
-            holder.layout_remove.setOnClickListener {
+            holder.itemMainBinding.layoutRemove.setOnClickListener {
                 if (guid != mainStorage?.decodeString(MmkvManager.KEY_SELECTED_SERVER)) {
                     mActivity.mainViewModel.removeServer(guid)
                     notifyItemRemoved(position)
@@ -124,7 +125,7 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
                 }
             }
 
-            holder.infoContainer.setOnClickListener {
+            holder.itemMainBinding.infoContainer.setOnClickListener {
                 val selected = mainStorage?.decodeString(MmkvManager.KEY_SELECTED_SERVER)
                 if (guid != selected) {
                     mainStorage?.encode(MmkvManager.KEY_SELECTED_SERVER, guid)
@@ -146,9 +147,9 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
         if (holder is FooterViewHolder) {
             //if (activity?.defaultDPreference?.getPrefBoolean(AppConfig.PREF_INAPP_BUY_IS_PREMIUM, false)) {
             if (true) {
-                holder.layout_edit.visibility = View.INVISIBLE
+                holder.itemFooterBinding.layoutEdit.visibility = View.INVISIBLE
             } else {
-                holder.layout_edit.setOnClickListener {
+                holder.itemFooterBinding.layoutEdit.setOnClickListener {
                     Utils.openUri(mActivity, "${Utils.decode(AppConfig.promotionUrl)}?t=${System.currentTimeMillis()}")
                 }
             }
@@ -166,11 +167,9 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder {
         return when (viewType) {
             VIEW_TYPE_ITEM ->
-                MainViewHolder(LayoutInflater.from(parent.context)
-                        .inflate(R.layout.item_recycler_main, parent, false))
+                MainViewHolder(ItemRecyclerMainBinding.inflate(LayoutInflater.from(parent.context), parent, false))
             else ->
-                FooterViewHolder(LayoutInflater.from(parent.context)
-                        .inflate(R.layout.item_recycler_footer, parent, false))
+                FooterViewHolder(ItemRecyclerFooterBinding.inflate(LayoutInflater.from(parent.context), parent, false))
         }
     }
 
@@ -182,40 +181,21 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
         }
     }
 
-    open class BaseViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
-
-    class MainViewHolder(itemView: View) : BaseViewHolder(itemView), ItemTouchHelperViewHolder {
-        val subscription = itemView.tv_subscription!!
-        val radio = itemView.btn_radio!!
-        val name = itemView.tv_name!!
-        val test_result = itemView.tv_test_result!!
-        val type = itemView.tv_type!!
-        val statistics = itemView.tv_statistics!!
-        val infoContainer = itemView.info_container!!
-        val layout_edit = itemView.layout_edit!!
-        val layout_share = itemView.layout_share
-        val layout_remove = itemView.layout_remove!!
-
-        override fun onItemSelected() {
+    open class BaseViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        fun onItemSelected() {
             itemView.setBackgroundColor(Color.LTGRAY)
         }
 
-        override fun onItemClear() {
+        fun onItemClear() {
             itemView.setBackgroundColor(0)
         }
     }
 
-    class FooterViewHolder(itemView: View) : BaseViewHolder(itemView), ItemTouchHelperViewHolder {
-        val layout_edit = itemView.layout_edit!!
+    class MainViewHolder(val itemMainBinding: ItemRecyclerMainBinding) :
+            BaseViewHolder(itemMainBinding.root), ItemTouchHelperViewHolder
 
-        override fun onItemSelected() {
-            itemView.setBackgroundColor(Color.LTGRAY)
-        }
-
-        override fun onItemClear() {
-            itemView.setBackgroundColor(0)
-        }
-    }
+    class FooterViewHolder(val itemFooterBinding: ItemRecyclerFooterBinding) :
+            BaseViewHolder(itemFooterBinding.root), ItemTouchHelperViewHolder
 
     override fun onItemDismiss(position: Int) {
         val guid = mActivity.mainViewModel.serverList.getOrNull(position) ?: return
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyActivity.kt
index e8712a7d9..a0a970b37 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyActivity.kt
@@ -17,7 +17,6 @@ import android.view.animation.AccelerateInterpolator
 import android.view.animation.DecelerateInterpolator
 import com.v2ray.ang.R
 import com.v2ray.ang.util.AppManagerUtil
-import kotlinx.android.synthetic.main.activity_bypass_list.*
 import rx.android.schedulers.AndroidSchedulers
 import rx.schedulers.Schedulers
 import java.text.Collator
@@ -26,6 +25,7 @@ import android.view.inputmethod.EditorInfo
 import android.view.inputmethod.InputMethodManager
 import com.v2ray.ang.AppConfig
 import com.v2ray.ang.AppConfig.ANG_PACKAGE
+import com.v2ray.ang.databinding.ActivityBypassListBinding
 import com.v2ray.ang.dto.AppInfo
 import com.v2ray.ang.extension.toast
 import com.v2ray.ang.extension.v2RayApplication
@@ -36,6 +36,7 @@ import kotlinx.coroutines.launch
 import java.net.URL
 
 class PerAppProxyActivity : BaseActivity() {
+    private lateinit var binding: ActivityBypassListBinding
 
     private var adapter: PerAppProxyAdapter? = null
     private var appsAll: List<AppInfo>? = null
@@ -43,12 +44,14 @@ class PerAppProxyActivity : BaseActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_bypass_list)
+        binding = ActivityBypassListBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
 
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
 
         val dividerItemDecoration = DividerItemDecoration(this, LinearLayoutManager.VERTICAL)
-        recycler_view.addItemDecoration(dividerItemDecoration)
+        binding.recyclerView.addItemDecoration(dividerItemDecoration)
 
         val blacklist = defaultSharedPreferences.getStringSet(AppConfig.PREF_PER_APP_PROXY_SET, null)
 
@@ -90,20 +93,20 @@ class PerAppProxyActivity : BaseActivity() {
                 .subscribe {
                     appsAll = it
                     adapter = PerAppProxyAdapter(this, it, blacklist)
-                    recycler_view.adapter = adapter
-                    pb_waiting.visibility = View.GONE
+                    binding.recyclerView.adapter = adapter
+                    binding.pbWaiting.visibility = View.GONE
                 }
 
-        recycler_view.addOnScrollListener(object : RecyclerView.OnScrollListener() {
+        binding.recyclerView.addOnScrollListener(object : RecyclerView.OnScrollListener() {
             var dst = 0
             val threshold = resources.getDimensionPixelSize(R.dimen.bypass_list_header_height) * 3
             override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
                 dst += dy
                 if (dst > threshold) {
-                    header_view.hide()
+                    binding.headerView.hide()
                     dst = 0
                 } else if (dst < -20) {
-                    header_view.show()
+                    binding.headerView.show()
                     dst = 0
                 }
             }
@@ -139,17 +142,17 @@ class PerAppProxyActivity : BaseActivity() {
             }
         })
 
-        switch_per_app_proxy.setOnCheckedChangeListener { _, isChecked ->
+        binding.switchPerAppProxy.setOnCheckedChangeListener { _, isChecked ->
             defaultSharedPreferences.edit().putBoolean(AppConfig.PREF_PER_APP_PROXY, isChecked).apply()
         }
-        switch_per_app_proxy.isChecked = defaultSharedPreferences.getBoolean(AppConfig.PREF_PER_APP_PROXY, false)
+        binding.switchPerAppProxy.isChecked = defaultSharedPreferences.getBoolean(AppConfig.PREF_PER_APP_PROXY, false)
 
-        switch_bypass_apps.setOnCheckedChangeListener { _, isChecked ->
+        binding.switchBypassApps.setOnCheckedChangeListener { _, isChecked ->
             defaultSharedPreferences.edit().putBoolean(AppConfig.PREF_BYPASS_APPS, isChecked).apply()
         }
-        switch_bypass_apps.isChecked = defaultSharedPreferences.getBoolean(AppConfig.PREF_BYPASS_APPS, false)
+        binding.switchBypassApps.isChecked = defaultSharedPreferences.getBoolean(AppConfig.PREF_BYPASS_APPS, false)
 
-        et_search.setOnEditorActionListener { v, actionId, event ->
+        binding.etSearch.setOnEditorActionListener { v, actionId, event ->
             if (actionId == EditorInfo.IME_ACTION_SEARCH) {
                 //hide
                 var imm: InputMethodManager = v.context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
@@ -169,7 +172,7 @@ class PerAppProxyActivity : BaseActivity() {
                     }
                 }
                 adapter = PerAppProxyAdapter(this, apps, adapter?.blacklist)
-                recycler_view.adapter = adapter
+                binding.recyclerView.adapter = adapter
                 adapter?.notifyDataSetChanged()
                 true
             } else {
@@ -247,7 +250,7 @@ class PerAppProxyActivity : BaseActivity() {
 
             adapter?.blacklist!!.clear()
 
-            if (switch_bypass_apps.isChecked) {
+            if (binding.switchBypassApps.isChecked) {
                 adapter?.let {
                     it.apps.forEach block@{
                         val packageName = it.packageName
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyAdapter.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyAdapter.kt
index 234594a04..ec7e1242c 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyAdapter.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/PerAppProxyAdapter.kt
@@ -6,8 +6,8 @@ import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ItemRecyclerBypassListBinding
 import com.v2ray.ang.dto.AppInfo
-import kotlinx.android.synthetic.main.item_recycler_bypass_list.view.*
 import java.util.*
 
 class PerAppProxyAdapter(val activity: BaseActivity, val apps: List<AppInfo>, blacklist: MutableSet<String>?) :
@@ -18,8 +18,7 @@ class PerAppProxyAdapter(val activity: BaseActivity, val apps: List<AppInfo>, bl
         private const val VIEW_TYPE_ITEM = 1
     }
 
-    private var mActivity: BaseActivity = activity
-    val blacklist = if (blacklist == null) HashSet<String>() else HashSet<String>(blacklist)
+    val blacklist = if (blacklist == null) HashSet() else HashSet(blacklist)
 
     override fun onBindViewHolder(holder: BaseViewHolder, position: Int) {
         if (holder is AppViewHolder) {
@@ -43,8 +42,7 @@ class PerAppProxyAdapter(val activity: BaseActivity, val apps: List<AppInfo>, bl
 //            VIEW_TYPE_ITEM -> AppViewHolder(ctx.layoutInflater
 //                    .inflate(R.layout.item_recycler_bypass_list, parent, false))
 
-            else -> AppViewHolder(LayoutInflater.from(ctx)
-                    .inflate(R.layout.item_recycler_bypass_list, parent, false))
+            else -> AppViewHolder(ItemRecyclerBypassListBinding.inflate(LayoutInflater.from(ctx), parent, false))
 
         }
     }
@@ -53,30 +51,25 @@ class PerAppProxyAdapter(val activity: BaseActivity, val apps: List<AppInfo>, bl
 
     open class BaseViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
 
-    inner class AppViewHolder(itemView: View) : BaseViewHolder(itemView),
+    inner class AppViewHolder(private val itemBypassBinding: ItemRecyclerBypassListBinding) : BaseViewHolder(itemBypassBinding.root),
             View.OnClickListener {
         private val inBlacklist: Boolean get() = blacklist.contains(appInfo.packageName)
         private lateinit var appInfo: AppInfo
 
-        val icon = itemView.icon!!
-        val name = itemView.name!!
-        val package_name = itemView.package_name!!
-        val checkBox = itemView.check_box!!
-
         fun bind(appInfo: AppInfo) {
             this.appInfo = appInfo
 
-            icon.setImageDrawable(appInfo.appIcon)
+            itemBypassBinding.icon.setImageDrawable(appInfo.appIcon)
 //            name.text = appInfo.appName
 
-            checkBox.isChecked = inBlacklist
-            package_name.text = appInfo.packageName
+            itemBypassBinding.checkBox.isChecked = inBlacklist
+            itemBypassBinding.packageName.text = appInfo.packageName
             if (appInfo.isSystemApp) {
-                name.text = String.format("** %1s", appInfo.appName)
-                name.setTextColor(Color.RED)
+                itemBypassBinding.name.text = String.format("** %1s", appInfo.appName)
+                itemBypassBinding.name.setTextColor(Color.RED)
             } else {
-                name.text = appInfo.appName
-                name.setTextColor(Color.DKGRAY)
+                itemBypassBinding.name.text = appInfo.appName
+                itemBypassBinding.name.setTextColor(Color.DKGRAY)
             }
 
             itemView.setOnClickListener(this)
@@ -85,10 +78,10 @@ class PerAppProxyAdapter(val activity: BaseActivity, val apps: List<AppInfo>, bl
         override fun onClick(v: View?) {
             if (inBlacklist) {
                 blacklist.remove(appInfo.packageName)
-                checkBox.isChecked = false
+                itemBypassBinding.checkBox.isChecked = false
             } else {
                 blacklist.add(appInfo.packageName)
-                checkBox.isChecked = true
+                itemBypassBinding.checkBox.isChecked = true
             }
         }
     }
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/RoutingSettingsActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/RoutingSettingsActivity.kt
index d672a331b..7b04f41ee 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/RoutingSettingsActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/RoutingSettingsActivity.kt
@@ -5,17 +5,21 @@ import android.os.Bundle
 import com.v2ray.ang.R
 import androidx.fragment.app.Fragment
 import com.v2ray.ang.AppConfig
-import kotlinx.android.synthetic.main.activity_routing_settings.*
+import com.v2ray.ang.databinding.ActivityRoutingSettingsBinding
 
 
 class RoutingSettingsActivity : BaseActivity() {
+    private lateinit var binding: ActivityRoutingSettingsBinding
+
     private val titles: Array<out String> by lazy {
         resources.getStringArray(R.array.routing_tag)
     }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_routing_settings)
+        binding = ActivityRoutingSettingsBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
 
         title = getString(R.string.routing_settings_title)
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
@@ -26,8 +30,8 @@ class RoutingSettingsActivity : BaseActivity() {
         fragments.add(RoutingSettingsFragment().newInstance(AppConfig.PREF_V2RAY_ROUTING_BLOCKED))
 
         val adapter = FragmentAdapter(supportFragmentManager, fragments, titles.toList())
-        viewpager?.adapter = adapter
-        tablayout.setTabTextColors(Color.BLACK, Color.RED)
-        tablayout.setupWithViewPager(viewpager)
+        binding.viewpager.adapter = adapter
+        binding.tablayout.setTabTextColors(Color.BLACK, Color.RED)
+        binding.tablayout.setupWithViewPager(binding.viewpager)
     }
 }
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ServerCustomConfigActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ServerCustomConfigActivity.kt
index 216130772..e445b7444 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ServerCustomConfigActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/ServerCustomConfigActivity.kt
@@ -10,16 +10,17 @@ import com.blacksquircle.ui.language.json.JsonLanguage
 import com.google.gson.Gson
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ActivityServerCustomConfigBinding
 import com.v2ray.ang.dto.EConfigType
 import com.v2ray.ang.dto.ServerConfig
 import com.v2ray.ang.dto.V2rayConfig
 import com.v2ray.ang.extension.toast
 import com.v2ray.ang.util.MmkvManager
 import com.v2ray.ang.util.Utils
-import kotlinx.android.synthetic.main.activity_server_custom_config.*
 import me.drakeet.support.toast.ToastCompat
 
 class ServerCustomConfigActivity : BaseActivity() {
+    private lateinit var binding: ActivityServerCustomConfigBinding
 
     private val mainStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_MAIN, MMKV.MULTI_PROCESS_MODE) }
     private val serverRawStorage by lazy { MMKV.mmkvWithID(MmkvManager.ID_SERVER_RAW, MMKV.MULTI_PROCESS_MODE) }
@@ -32,10 +33,12 @@ class ServerCustomConfigActivity : BaseActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_server_custom_config)
+        binding = ActivityServerCustomConfigBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
         title = getString(R.string.title_server)
 
-        editor.language = JsonLanguage()
+        binding.editor.language = JsonLanguage()
         val config = MmkvManager.decodeServerConfig(editGuid)
         if (config != null) {
             bindingServer(config)
@@ -49,12 +52,12 @@ class ServerCustomConfigActivity : BaseActivity() {
      * bingding seleced server config
      */
     private fun bindingServer(config: ServerConfig): Boolean {
-        et_remarks.text = Utils.getEditable(config.remarks)
+        binding.etRemarks.text = Utils.getEditable(config.remarks)
         val raw = serverRawStorage?.decodeString(editGuid)
         if (raw.isNullOrBlank()) {
-            editor.setTextContent(Utils.getEditable(config.fullConfig?.toPrettyPrinting().orEmpty()))
+            binding.editor.setTextContent(Utils.getEditable(config.fullConfig?.toPrettyPrinting().orEmpty()))
         } else {
-            editor.setTextContent(Utils.getEditable(raw))
+            binding.editor.setTextContent(Utils.getEditable(raw))
         }
         return true
     }
@@ -63,7 +66,7 @@ class ServerCustomConfigActivity : BaseActivity() {
      * clear or init server config
      */
     private fun clearServer(): Boolean {
-        et_remarks.text = null
+        binding.etRemarks.text = null
         return true
     }
 
@@ -71,13 +74,13 @@ class ServerCustomConfigActivity : BaseActivity() {
      * save server config
      */
     private fun saveServer(): Boolean {
-        if (TextUtils.isEmpty(et_remarks.text.toString())) {
+        if (TextUtils.isEmpty(binding.etRemarks.text.toString())) {
             toast(R.string.server_lab_remarks)
             return false
         }
 
         val v2rayConfig = try {
-            Gson().fromJson(editor.text.toString(), V2rayConfig::class.java)
+            Gson().fromJson(binding.editor.text.toString(), V2rayConfig::class.java)
         } catch (e: Exception) {
             e.printStackTrace()
             ToastCompat.makeText(this, "${getString(R.string.toast_malformed_josn)} ${e.cause?.message}", Toast.LENGTH_LONG).show()
@@ -85,11 +88,11 @@ class ServerCustomConfigActivity : BaseActivity() {
         }
 
         val config = MmkvManager.decodeServerConfig(editGuid) ?: ServerConfig.create(EConfigType.CUSTOM)
-        config.remarks = et_remarks.text.toString().trim()
+        config.remarks = binding.etRemarks.text.toString().trim()
         config.fullConfig = v2rayConfig
 
         MmkvManager.encodeServerConfig(editGuid, config)
-        serverRawStorage?.encode(editGuid, editor.text.toString())
+        serverRawStorage?.encode(editGuid, binding.editor.text.toString())
         toast(R.string.toast_success)
         finish()
         return true
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubEditActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubEditActivity.kt
index 2163dbbb5..dbc048951 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubEditActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubEditActivity.kt
@@ -8,13 +8,14 @@ import android.view.MenuItem
 import com.google.gson.Gson
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.R
+import com.v2ray.ang.databinding.ActivitySubEditBinding
 import com.v2ray.ang.dto.SubscriptionItem
 import com.v2ray.ang.extension.toast
 import com.v2ray.ang.util.MmkvManager
 import com.v2ray.ang.util.Utils
-import kotlinx.android.synthetic.main.activity_sub_edit.*
 
 class SubEditActivity : BaseActivity() {
+    private lateinit var binding: ActivitySubEditBinding
 
     var del_config: MenuItem? = null
     var save_config: MenuItem? = null
@@ -24,7 +25,9 @@ class SubEditActivity : BaseActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_sub_edit)
+        binding = ActivitySubEditBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
         title = getString(R.string.title_sub_setting)
 
         val json = subStorage?.decodeString(editSubId)
@@ -40,8 +43,8 @@ class SubEditActivity : BaseActivity() {
      * bingding seleced server config
      */
     private fun bindingServer(subItem: SubscriptionItem): Boolean {
-        et_remarks.text = Utils.getEditable(subItem.remarks)
-        et_url.text = Utils.getEditable(subItem.url)
+        binding.etRemarks.text = Utils.getEditable(subItem.remarks)
+        binding.etUrl.text = Utils.getEditable(subItem.url)
 
         return true
     }
@@ -50,8 +53,8 @@ class SubEditActivity : BaseActivity() {
      * clear or init server config
      */
     private fun clearServer(): Boolean {
-        et_remarks.text = null
-        et_url.text = null
+        binding.etRemarks.text = null
+        binding.etUrl.text = null
 
         return true
     }
@@ -70,8 +73,8 @@ class SubEditActivity : BaseActivity() {
             subItem = SubscriptionItem()
         }
 
-        subItem.remarks = et_remarks.text.toString()
-        subItem.url = et_url.text.toString()
+        subItem.remarks = binding.etRemarks.text.toString()
+        subItem.url = binding.etUrl.text.toString()
 
         if (TextUtils.isEmpty(subItem.remarks)) {
             toast(R.string.sub_setting_remarks)
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingActivity.kt
index a007814c1..32abe229c 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingActivity.kt
@@ -4,26 +4,29 @@ import android.content.Intent
 import android.view.Menu
 import android.view.MenuItem
 import com.v2ray.ang.R
-import kotlinx.android.synthetic.main.activity_sub_setting.*
 import android.os.Bundle
 import androidx.recyclerview.widget.LinearLayoutManager
+import com.v2ray.ang.databinding.ActivitySubSettingBinding
 import com.v2ray.ang.dto.SubscriptionItem
 import com.v2ray.ang.util.MmkvManager
 
 class SubSettingActivity : BaseActivity() {
+    private lateinit var binding: ActivitySubSettingBinding
 
     var subscriptions:List<Pair<String, SubscriptionItem>> = listOf()
     private val adapter by lazy { SubSettingRecyclerAdapter(this) }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_sub_setting)
+        binding = ActivitySubSettingBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
 
         title = getString(R.string.title_sub_setting)
 
-        recycler_view.setHasFixedSize(true)
-        recycler_view.layoutManager = LinearLayoutManager(this)
-        recycler_view.adapter = adapter
+        binding.recyclerView.setHasFixedSize(true)
+        binding.recyclerView.layoutManager = LinearLayoutManager(this)
+        binding.recyclerView.adapter = adapter
 
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
     }
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingRecyclerAdapter.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingRecyclerAdapter.kt
index ef374229c..80a20c105 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingRecyclerAdapter.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/SubSettingRecyclerAdapter.kt
@@ -4,44 +4,32 @@ import android.content.Intent
 import android.graphics.Color
 import androidx.recyclerview.widget.RecyclerView
 import android.view.LayoutInflater
-import android.view.View
 import android.view.ViewGroup
-import com.v2ray.ang.R
-import kotlinx.android.synthetic.main.item_recycler_sub_setting.view.*
+import com.v2ray.ang.databinding.ItemRecyclerSubSettingBinding
 
-class SubSettingRecyclerAdapter(val activity: SubSettingActivity) : RecyclerView.Adapter<SubSettingRecyclerAdapter.BaseViewHolder>() {
+class SubSettingRecyclerAdapter(val activity: SubSettingActivity) : RecyclerView.Adapter<SubSettingRecyclerAdapter.MainViewHolder>() {
 
     private var mActivity: SubSettingActivity = activity
 
     override fun getItemCount() = mActivity.subscriptions.size
 
-    override fun onBindViewHolder(holder: BaseViewHolder, position: Int) {
-        if (holder is MainViewHolder) {
-            val subId = mActivity.subscriptions[position].first
-            val subItem = mActivity.subscriptions[position].second
-            holder.name.text = subItem.remarks
-            holder.url.text = subItem.url
-            holder.itemView.setBackgroundColor(Color.TRANSPARENT)
+    override fun onBindViewHolder(holder: MainViewHolder, position: Int) {
+        val subId = mActivity.subscriptions[position].first
+        val subItem = mActivity.subscriptions[position].second
+        holder.itemSubSettingBinding.tvName.text = subItem.remarks
+        holder.itemSubSettingBinding.tvUrl.text = subItem.url
+        holder.itemView.setBackgroundColor(Color.TRANSPARENT)
 
-            holder.layout_edit.setOnClickListener {
-                mActivity.startActivity(Intent(mActivity, SubEditActivity::class.java)
-                        .putExtra("subId", subId)
-                )
-            }
+        holder.itemSubSettingBinding.layoutEdit.setOnClickListener {
+            mActivity.startActivity(Intent(mActivity, SubEditActivity::class.java)
+                    .putExtra("subId", subId)
+            )
         }
     }
 
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): BaseViewHolder {
-        return MainViewHolder(LayoutInflater.from(parent.context)
-                .inflate(R.layout.item_recycler_sub_setting, parent, false))
-    }
-
-    open class BaseViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
-
-    class MainViewHolder(itemView: View) : BaseViewHolder(itemView) {
-        val name = itemView.tv_name!!
-        val url = itemView.tv_url!!
-        val layout_edit = itemView.layout_edit!!
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MainViewHolder {
+        return MainViewHolder(ItemRecyclerSubSettingBinding.inflate(LayoutInflater.from(parent.context), parent, false))
     }
 
+    class MainViewHolder(val itemSubSettingBinding: ItemRecyclerSubSettingBinding) : RecyclerView.ViewHolder(itemSubSettingBinding.root)
 }
diff --git a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/TaskerActivity.kt b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/TaskerActivity.kt
index 2b8c16739..8ee9d68f3 100644
--- a/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/TaskerActivity.kt
+++ b/V2rayNG/app/src/main/kotlin/com/v2ray/ang/ui/TaskerActivity.kt
@@ -14,10 +14,12 @@ import android.view.MenuItem
 import com.google.zxing.WriterException
 import com.tencent.mmkv.MMKV
 import com.v2ray.ang.AppConfig
+import com.v2ray.ang.databinding.ActivityTaskerBinding
 import com.v2ray.ang.util.MmkvManager
-import kotlinx.android.synthetic.main.activity_tasker.*
 
 class TaskerActivity : BaseActivity() {
+    private lateinit var binding: ActivityTaskerBinding
+
     private var listview: ListView? = null
     private var lstData: ArrayList<String> = ArrayList()
     private var lstGuid: ArrayList<String> = ArrayList()
@@ -26,7 +28,9 @@ class TaskerActivity : BaseActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_tasker)
+        binding = ActivityTaskerBinding.inflate(layoutInflater)
+        val view = binding.root
+        setContentView(view)
 
         //add def value
         lstData.add("Default")
@@ -55,7 +59,7 @@ class TaskerActivity : BaseActivity() {
             if (switch == null || TextUtils.isEmpty(guid)) {
                 return
             } else {
-                switch_start_service.isChecked = switch
+                binding.switchStartService.isChecked = switch
                 val pos = lstGuid.indexOf(guid.toString())
                 if (pos >= 0) {
                     listview?.setItemChecked(pos, true)
@@ -74,12 +78,12 @@ class TaskerActivity : BaseActivity() {
         }
 
         val extraBundle = Bundle()
-        extraBundle.putBoolean(AppConfig.TASKER_EXTRA_BUNDLE_SWITCH, switch_start_service.isChecked)
+        extraBundle.putBoolean(AppConfig.TASKER_EXTRA_BUNDLE_SWITCH, binding.switchStartService.isChecked)
         extraBundle.putString(AppConfig.TASKER_EXTRA_BUNDLE_GUID, lstGuid[position])
         val intent = Intent()
 
         val remarks = lstData[position]
-        val blurb = if (switch_start_service.isChecked) {
+        val blurb = if (binding.switchStartService.isChecked) {
             "Start $remarks"
         } else {
             "Stop $remarks"