diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/extension/_Ext.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/extension/_Ext.kt
index 9aabecef..a5e0da0b 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/extension/_Ext.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/extension/_Ext.kt
@@ -95,4 +95,4 @@ inline fun <reified T : Serializable> Intent.serializable(key: String): T? = whe
     else -> @Suppress("DEPRECATION") getSerializableExtra(key) as? T
 }
 
-inline fun CharSequence?.isNotNullEmpty(): Boolean = (this != null && this.isNotEmpty())
\ No newline at end of file
+fun CharSequence?.isNotNullEmpty(): Boolean = (this != null && this.isNotEmpty())
\ No newline at end of file
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/handler/V2rayConfigManager.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/handler/V2rayConfigManager.kt
index 1906c3e9..8c432dde 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/handler/V2rayConfigManager.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/handler/V2rayConfigManager.kt
@@ -240,7 +240,7 @@ object V2rayConfigManager {
 
         val rulesetItems = MmkvManager.decodeRoutingRulesets()
         rulesetItems?.forEach { key ->
-            if (key != null && key.enabled && key.outboundTag == tag && !key.domain.isNullOrEmpty()) {
+            if (key.enabled && key.outboundTag == tag && !key.domain.isNullOrEmpty()) {
                 key.domain?.forEach {
                     if (it != GEOSITE_PRIVATE
                         && (it.startsWith("geosite:") || it.startsWith("domain:"))
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/plugin/PluginManager.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/plugin/PluginManager.kt
index 072b1c32..121cfd33 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/plugin/PluginManager.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/plugin/PluginManager.kt
@@ -222,7 +222,7 @@ object PluginManager {
         return File(pluginDir, pluginId).absolutePath
     }
 
-    fun ComponentInfo.loadString(key: String) = when (val value = metaData.get(key)) {
+    fun ComponentInfo.loadString(key: String) = when (val value = metaData.getString(key)) {
         is String -> value
         is Int -> AngApplication.application.packageManager.getResourcesForApplication(applicationInfo)
             .getString(value)
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/service/V2RayServiceManager.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/service/V2RayServiceManager.kt
index cf317e0f..a008a840 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/service/V2RayServiceManager.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/service/V2RayServiceManager.kt
@@ -4,6 +4,7 @@ import android.app.Notification
 import android.app.NotificationChannel
 import android.app.NotificationManager
 import android.app.PendingIntent
+import android.app.Service
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
@@ -353,7 +354,12 @@ object V2RayServiceManager {
 
     fun cancelNotification() {
         val service = serviceControl?.get()?.getService() ?: return
-        service.stopForeground(true)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            service.stopForeground(Service.STOP_FOREGROUND_REMOVE)
+        } else {
+            service.stopForeground(true)
+        }
+
         mBuilder = null
         mDisposable?.dispose()
         mDisposable = null
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainActivity.kt
index 6dcd6fac..53ae34ea 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainActivity.kt
@@ -387,7 +387,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                         }
                     }
                 }
-                .setNegativeButton(android.R.string.no) { _, _ ->
+                .setNegativeButton(android.R.string.cancel) { _, _ ->
                     //do noting
                 }
                 .show()
@@ -407,7 +407,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                         }
                     }
                 }
-                .setNegativeButton(android.R.string.no) { _, _ ->
+                .setNegativeButton(android.R.string.cancel) { _, _ ->
                     //do noting
                 }
                 .show()
@@ -427,7 +427,7 @@ class MainActivity : BaseActivity(), NavigationView.OnNavigationItemSelectedList
                         }
                     }
                 }
-                .setNegativeButton(android.R.string.no) { _, _ ->
+                .setNegativeButton(android.R.string.cancel) { _, _ ->
                     //do noting
                 }
                 .show()
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainRecyclerAdapter.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainRecyclerAdapter.kt
index dadbb4fd..30bc3ed2 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainRecyclerAdapter.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/MainRecyclerAdapter.kt
@@ -143,7 +143,7 @@ class MainRecyclerAdapter(val activity: MainActivity) : RecyclerView.Adapter<Mai
                             .setPositiveButton(android.R.string.ok) { _, _ ->
                                 removeServer(guid, position)
                             }
-                            .setNegativeButton(android.R.string.no) { _, _ ->
+                            .setNegativeButton(android.R.string.cancel) { _, _ ->
                                 //do noting
                             }
                             .show()
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/RoutingEditActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/RoutingEditActivity.kt
index 48d4da37..561db0e9 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/RoutingEditActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/RoutingEditActivity.kt
@@ -95,7 +95,7 @@ class RoutingEditActivity : BaseActivity() {
                         }
                     }
                 }
-                .setNegativeButton(android.R.string.no) { _, _ ->
+                .setNegativeButton(android.R.string.cancel) { _, _ ->
                     // do nothing
                 }
                 .show()
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/RoutingSettingActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/RoutingSettingActivity.kt
index d3820305..44410d67 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/RoutingSettingActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/RoutingSettingActivity.kt
@@ -105,7 +105,7 @@ class RoutingSettingActivity : BaseActivity() {
 
 
                 }
-                .setNegativeButton(android.R.string.no) { _, _ ->
+                .setNegativeButton(android.R.string.cancel) { _, _ ->
                     //do noting
                 }
                 .show()
@@ -134,7 +134,7 @@ class RoutingSettingActivity : BaseActivity() {
                         }
                     }
                 }
-                .setNegativeButton(android.R.string.no) { _, _ ->
+                .setNegativeButton(android.R.string.cancel) { _, _ ->
                     //do nothing
                 }
                 .show()
@@ -189,7 +189,7 @@ class RoutingSettingActivity : BaseActivity() {
                     }
                 }
             }
-            .setNegativeButton(android.R.string.no) { _, _ ->
+            .setNegativeButton(android.R.string.cancel) { _, _ ->
                 //do nothing
             }
             .show()
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ServerActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ServerActivity.kt
index 26b88fa1..7cb66933 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ServerActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ServerActivity.kt
@@ -600,7 +600,7 @@ class ServerActivity : BaseActivity() {
                             MmkvManager.removeServer(editGuid)
                             finish()
                         }
-                        .setNegativeButton(android.R.string.no) { _, _ ->
+                        .setNegativeButton(android.R.string.cancel) { _, _ ->
                             // do nothing
                         }
                         .show()
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ServerCustomConfigActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ServerCustomConfigActivity.kt
index 9d8e3305..6dba8faf 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ServerCustomConfigActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/ServerCustomConfigActivity.kt
@@ -106,7 +106,7 @@ class ServerCustomConfigActivity : BaseActivity() {
                     MmkvManager.removeServer(editGuid)
                     finish()
                 }
-                .setNegativeButton(android.R.string.no) { _, _ ->
+                .setNegativeButton(android.R.string.cancel) { _, _ ->
                     // do nothing
                 }
                 .show()
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/SubEditActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/SubEditActivity.kt
index 0c32ff76..45f92c2d 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/SubEditActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/SubEditActivity.kt
@@ -113,7 +113,7 @@ class SubEditActivity : BaseActivity() {
                         }
                     }
                 }
-                .setNegativeButton(android.R.string.no) { _, _ ->
+                .setNegativeButton(android.R.string.cancel) { _, _ ->
                     // do nothing
                 }
                 .show()
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetActivity.kt
index 0f217546..c59afe5b 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetActivity.kt
@@ -333,7 +333,7 @@ class UserAssetActivity : BaseActivity() {
                         MmkvManager.removeAssetUrl(item.first)
                         initAssets()
                     }
-                    .setNegativeButton(android.R.string.no) { _, _ ->
+                    .setNegativeButton(android.R.string.cancel) { _, _ ->
                         //do noting
                     }
                     .show()
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetUrlActivity.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetUrlActivity.kt
index 98b4c86b..0f95dd7a 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetUrlActivity.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/ui/UserAssetUrlActivity.kt
@@ -116,7 +116,7 @@ class UserAssetUrlActivity : BaseActivity() {
                     MmkvManager.removeAssetUrl(editAssetId)
                     finish()
                 }
-                .setNegativeButton(android.R.string.no) { _, _ ->
+                .setNegativeButton(android.R.string.cancel) { _, _ ->
                     // do nothing
                 }
                 .show()
diff --git a/V2rayNG/settings.gradle.kts b/V2rayNG/settings.gradle.kts
index 3f61841e..7ac30b30 100644
--- a/V2rayNG/settings.gradle.kts
+++ b/V2rayNG/settings.gradle.kts
@@ -16,7 +16,6 @@ dependencyResolutionManagement {
     repositories {
         google()
         mavenCentral()
-        jcenter()
         maven { url = uri("https://jitpack.io") }
     }
 }