diff --git a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt
index cdfa03d7b..59fc6952b 100644
--- a/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt
+++ b/app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeByJSoup.kt
@@ -196,20 +196,20 @@ class AnalyzeByJSoup {
 
     private fun filterElements(elements: Elements, rules: Array<String>?): Elements {
         if (rules == null || rules.size < 2) return elements
-        val selectedEls = Elements()
-        for (ele in elements) {
+        val result = Elements()
+        for (element in elements) {
             var isOk = false
             when (rules[0]) {
-                "class" -> isOk = ele.getElementsByClass(rules[1]).size > 0
-                "id" -> isOk = ele.getElementById(rules[1]) != null
-                "tag" -> isOk = ele.getElementsByTag(rules[1]).size > 0
-                "text" -> isOk = ele.getElementsContainingOwnText(rules[1]).size > 0
+                "class" -> isOk = element.getElementsByClass(rules[1]).size > 0
+                "id" -> isOk = element.getElementById(rules[1]) != null
+                "tag" -> isOk = element.getElementsByTag(rules[1]).size > 0
+                "text" -> isOk = element.getElementsContainingOwnText(rules[1]).size > 0
             }
             if (isOk) {
-                selectedEls.add(ele)
+                result.add(element)
             }
         }
-        return selectedEls
+        return result
     }
 
     /**
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/BgAdapter.kt b/app/src/main/java/io/legado/app/ui/book/read/config/BgAdapter.kt
new file mode 100644
index 000000000..335ff8520
--- /dev/null
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/BgAdapter.kt
@@ -0,0 +1,42 @@
+package io.legado.app.ui.book.read.config
+
+import android.content.Context
+import io.legado.app.R
+import io.legado.app.base.adapter.ItemViewHolder
+import io.legado.app.base.adapter.SimpleRecyclerAdapter
+import io.legado.app.constant.EventBus
+import io.legado.app.help.ImageLoader
+import io.legado.app.help.ReadBookConfig
+import io.legado.app.utils.postEvent
+import kotlinx.android.synthetic.main.item_bg_image.view.*
+import org.jetbrains.anko.sdk27.listeners.onClick
+import java.io.File
+
+class BgAdapter(context: Context, val textColor: Int) :
+    SimpleRecyclerAdapter<String>(context, R.layout.item_bg_image) {
+
+    override fun convert(holder: ItemViewHolder, item: String, payloads: MutableList<Any>) {
+        with(holder.itemView) {
+            ImageLoader.load(
+                context,
+                context.assets.open("bg${File.separator}$item").readBytes()
+            )
+                .centerCrop()
+                .into(iv_bg)
+            tv_name.setTextColor(textColor)
+            tv_name.text = item.substringBeforeLast(".")
+        }
+    }
+
+    override fun registerListener(holder: ItemViewHolder) {
+        holder.itemView.apply {
+            this.onClick {
+                getItemByLayoutPosition(holder.layoutPosition)?.let {
+                    ReadBookConfig.durConfig.setCurBg(1, it)
+                    ReadBookConfig.upBg()
+                    postEvent(EventBus.UP_CONFIG, false)
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt b/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt
index a41bf4003..bd7f3d32d 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/config/BgTextConfigDialog.kt
@@ -2,7 +2,6 @@ package io.legado.app.ui.book.read.config
 
 import android.annotation.SuppressLint
 import android.app.Activity.RESULT_OK
-import android.content.Context
 import android.content.DialogInterface
 import android.content.Intent
 import android.graphics.Color
@@ -14,10 +13,7 @@ import androidx.documentfile.provider.DocumentFile
 import com.jaredrummler.android.colorpicker.ColorPickerDialog
 import io.legado.app.R
 import io.legado.app.base.BaseDialogFragment
-import io.legado.app.base.adapter.ItemViewHolder
-import io.legado.app.base.adapter.SimpleRecyclerAdapter
 import io.legado.app.constant.EventBus
-import io.legado.app.help.ImageLoader
 import io.legado.app.help.ReadBookConfig
 import io.legado.app.help.http.HttpHelper
 import io.legado.app.help.permission.Permissions
@@ -53,8 +49,8 @@ class BgTextConfigDialog : BaseDialogFragment(), FileChooserDialog.CallBack {
     private val requestCodeImport = 132
     private val configFileName = "readConfig.zip"
     private lateinit var adapter: BgAdapter
-    var primaryTextColor = 0
-    var secondaryTextColor = 0
+    private var primaryTextColor = 0
+    private var secondaryTextColor = 0
 
     override fun onStart() {
         super.onStart()
@@ -109,7 +105,7 @@ class BgTextConfigDialog : BaseDialogFragment(), FileChooserDialog.CallBack {
     @SuppressLint("InflateParams")
     private fun initData() = with(ReadBookConfig.durConfig) {
         sw_dark_status_icon.isChecked = curStatusIconDark()
-        adapter = BgAdapter(requireContext())
+        adapter = BgAdapter(requireContext(), secondaryTextColor)
         recycler_view.adapter = adapter
         val headerView = LayoutInflater.from(requireContext())
             .inflate(R.layout.item_bg_image, recycler_view, false)
@@ -189,35 +185,6 @@ class BgTextConfigDialog : BaseDialogFragment(), FileChooserDialog.CallBack {
         startActivityForResult(intent, requestCodeBg)
     }
 
-    inner class BgAdapter(context: Context) :
-        SimpleRecyclerAdapter<String>(context, R.layout.item_bg_image) {
-
-        override fun convert(holder: ItemViewHolder, item: String, payloads: MutableList<Any>) {
-            with(holder.itemView) {
-                ImageLoader.load(
-                    context,
-                    context.assets.open("bg${File.separator}$item").readBytes()
-                )
-                    .centerCrop()
-                    .into(iv_bg)
-                tv_name.setTextColor(secondaryTextColor)
-                tv_name.text = item.substringBeforeLast(".")
-            }
-        }
-
-        override fun registerListener(holder: ItemViewHolder) {
-            holder.itemView.apply {
-                this.onClick {
-                    getItemByLayoutPosition(holder.layoutPosition)?.let {
-                        ReadBookConfig.durConfig.setCurBg(1, it)
-                        ReadBookConfig.upBg()
-                        postEvent(EventBus.UP_CONFIG, false)
-                    }
-                }
-            }
-        }
-    }
-
     @Suppress("BlockingMethodInNonBlockingContext")
     private fun exportConfig(uri: Uri) {
         execute {