Fix obtaining packageName in NativePlugin

mobile/src/main/scala/com/github/shadowsocks/plugin/NativePlugin.scala

@@ -1,8 +1,6 @@
 package com.github.shadowsocks.plugin
 
-import android.content.ContentResolver
 import android.content.pm.{PackageManager, ResolveInfo}
-import android.net.Uri
 import android.os.Bundle
 
 /**
@@ -12,8 +10,5 @@ final class NativePlugin(resolveInfo: ResolveInfo, packageManager: PackageManage
   extends ResolvedPlugin(resolveInfo, packageManager) {
   assert(resolveInfo.providerInfo != null)
   override protected def metaData: Bundle = resolveInfo.providerInfo.metaData
-
-  private lazy val uriBuilder: Uri.Builder = new Uri.Builder()
-    .scheme(ContentResolver.SCHEME_CONTENT)
-    .authority(resolveInfo.providerInfo.authority)
+  override def packageName: String = resolveInfo.providerInfo.packageName
 }

mobile/src/main/scala/com/github/shadowsocks/plugin/ResolvedPlugin.scala

@@ -18,5 +18,5 @@ abstract class ResolvedPlugin(resolveInfo: ResolveInfo, packageManager: PackageM
   override final lazy val label: CharSequence = resolveInfo.loadLabel(packageManager)
   override final lazy val icon: Drawable = resolveInfo.loadIcon(packageManager)
   override final lazy val defaultConfig: String = metaData.getString(PluginContract.METADATA_KEY_DEFAULT_CONFIG)
-  override final def packageName: String = resolveInfo.resolvePackageName
+  override def packageName: String = resolveInfo.resolvePackageName
 }

mobile/src/main/scala/com/github/shadowsocks/preference/BottomSheetPreferenceDialogFragment.scala

@@ -70,7 +70,7 @@ final class BottomSheetPreferenceDialogFragment extends PreferenceDialogFragment
       case null => false
       case pn => try {
         startActivity(new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS, new Uri.Builder()
-          .authority(Settings.AUTHORITY)
+          .scheme("package")
           .opaquePart(pn)
           .build()))
         true