diff --git a/app/src/main/java/me/kbai/zhenxunui/api/WebSocketHolder.kt b/app/src/main/java/me/kbai/zhenxunui/api/WebSocketHolder.kt
index f576ed4..f479ff2 100644
--- a/app/src/main/java/me/kbai/zhenxunui/api/WebSocketHolder.kt
+++ b/app/src/main/java/me/kbai/zhenxunui/api/WebSocketHolder.kt
@@ -13,36 +13,44 @@ import okio.ByteString
 open class WebSocketHolder(private val path: String, private val scope: CoroutineScope) {
     companion object {
         private const val NOT_STARTED = 0
-        private const val RUNNING = 1
-        private const val CANCELED = 2
+        private const val CONNECTING = 1
+        private const val CONNECTED = 2
+        private const val CLOSING = 3
+        private const val CLOSED = 4
+        private const val FAILURE = 5
+        private const val CANCELED = -1
     }
 
     private var mWebSocket: WebSocket? = null
     private var mStatus = NOT_STARTED
 
     fun connect() {
-        if (mStatus != NOT_STARTED) return
+        if (mStatus in CONNECTING .. CLOSING) return
 
-        mStatus = RUNNING
+        mStatus = CONNECTING
 
         mWebSocket = BotApi.openWebSocket(path, object : WebSocketListener() {
 
             override fun onOpen(webSocket: WebSocket, response: Response) {
                 logI("WebSocket is connected.")
+                mStatus = CONNECTED
             }
 
             override fun onClosed(webSocket: WebSocket, code: Int, reason: String) {
                 logI("WebSocket is closed.")
+                mStatus = CLOSED
             }
 
             override fun onClosing(webSocket: WebSocket, code: Int, reason: String) {
-                logI("WebSocket is closing: $reason")
+                logI("WebSocket is closing, reason: $reason")
                 webSocket.close(code, reason)
+                mStatus = CLOSING
             }
 
             override fun onFailure(webSocket: WebSocket, t: Throwable, response: Response?) {
                 logE("WebSocket on failure: $response \n $t")
                 webSocket.cancel()
+                mStatus = FAILURE
                 scope.launch {
                     delay(5_000)
                     connect()
diff --git a/app/src/main/java/me/kbai/zhenxunui/tool/Ansi2SpannedHelper.kt b/app/src/main/java/me/kbai/zhenxunui/tool/Ansi2SpannedHelper.kt
index 8f81000..af48d8f 100644
--- a/app/src/main/java/me/kbai/zhenxunui/tool/Ansi2SpannedHelper.kt
+++ b/app/src/main/java/me/kbai/zhenxunui/tool/Ansi2SpannedHelper.kt
@@ -2,14 +2,17 @@ package me.kbai.zhenxunui.tool
 
 import android.graphics.Color
 import android.graphics.Typeface
+import android.os.Build
 import android.text.SpannableStringBuilder
 import android.text.Spanned
+import android.text.SpannedString
 import android.text.style.BackgroundColorSpan
 import android.text.style.CharacterStyle
 import android.text.style.ForegroundColorSpan
 import android.text.style.StrikethroughSpan
 import android.text.style.StyleSpan
 import android.text.style.UnderlineSpan
+import androidx.annotation.RequiresApi
 import pk.ansi4j.core.DefaultFunctionFinder
 import pk.ansi4j.core.DefaultParserFactory
 import pk.ansi4j.core.DefaultTextHandler
@@ -27,12 +30,16 @@ import pk.ansi4j.core.iso6429.IndependentControlFunctionHandler
 import java.util.AbstractCollection
 
 class Ansi2SpannedHelper {
-    private val mFactory: ParserFactory = initFactory()
+    private val mFactory: ParserFactory? = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+        initFactory()
+    } else {
+        null
+    }
     private val mStyles: ArrayList<CharacterStyle> = ArrayList()
 
     fun parse(text: String): Spanned {
         val builder = SpannableStringBuilder()
-        val parser = mFactory.createParser(text)
+        val parser = (mFactory ?: return SpannedString(text)).createParser(text)
 
         while (true) {
             val fragment = parser.parse() ?: break
@@ -97,6 +104,7 @@ class Ansi2SpannedHelper {
         }
     }
 
+    @RequiresApi(24)
     private fun initFactory() = DefaultParserFactory.Builder()
         .environment(Environment._7_BIT)
         .textHandler(DefaultTextHandler())
diff --git a/app/src/main/java/me/kbai/zhenxunui/tool/ReflectionUtils.java b/app/src/main/java/me/kbai/zhenxunui/tool/ReflectionUtils.java
index 7dc2a60..006fd89 100644
--- a/app/src/main/java/me/kbai/zhenxunui/tool/ReflectionUtils.java
+++ b/app/src/main/java/me/kbai/zhenxunui/tool/ReflectionUtils.java
@@ -1,5 +1,6 @@
 package me.kbai.zhenxunui.tool;
 
+import android.text.TextUtils;
 import android.util.Log;
 
 import androidx.annotation.Nullable;
@@ -106,15 +107,24 @@ public static <T> boolean setFieldValue(Object object, Field field, T fieldValue
         return false;
     }
 
+    /** @noinspection CallToPrintStackTrace*/
     public static <T> boolean setFieldValue(Object object, String fieldName, T fieldValue) {
-        try {
-            Class<?> clazz = object.getClass();
-            Field field = clazz.getDeclaredField(fieldName);
-            field.setAccessible(true);
-            field.set(object, fieldValue);
-            return true;
-        } catch (NoSuchFieldException | IllegalAccessException | NullPointerException e) {
-            Log.e(TAG, e.getMessage());
+        Class<?> clazz = object.getClass();
+        while (clazz != null) {
+            try {
+                Field field = clazz.getDeclaredField(fieldName);
+                field.setAccessible(true);
+                field.set(object, fieldValue);
+                return true;
+            } catch (NoSuchFieldException | IllegalAccessException | NullPointerException e) {
+                String log = e.getMessage();
+                if (TextUtils.isEmpty(log)) {
+                    e.printStackTrace();
+                } else {
+                    Log.e(TAG, log);
+                }
+            }
+            clazz = clazz.getSuperclass();
         }
         return false;
     }
diff --git a/app/src/main/java/me/kbai/zhenxunui/ui/console/ConsoleFragment.kt b/app/src/main/java/me/kbai/zhenxunui/ui/console/ConsoleFragment.kt
index b675219..1235185 100644
--- a/app/src/main/java/me/kbai/zhenxunui/ui/console/ConsoleFragment.kt
+++ b/app/src/main/java/me/kbai/zhenxunui/ui/console/ConsoleFragment.kt
@@ -40,9 +40,9 @@ class ConsoleFragment : BaseFragment<FragmentConsoleBinding>() {
 
     companion object {
         private const val LOCAL_DOMAIN = "local.host"
-        private const val BAR_CHART_FILE = "$LOCAL_DOMAIN/assets/console_bar_charts.html"
+        private const val BAR_CHART_FILE = "http://$LOCAL_DOMAIN/assets/console_bar_charts.html"
         private const val TANGENTIAL_BAR_FILE =
-            "$LOCAL_DOMAIN/assets/console_horizontal_bar_charts.html"
+            "http://$LOCAL_DOMAIN/assets/console_horizontal_bar_charts.html"
     }
 
     private val mViewModel by viewModels<ConsoleViewModel>()
diff --git a/app/src/main/java/me/kbai/zhenxunui/ui/group/ConversationFragment.kt b/app/src/main/java/me/kbai/zhenxunui/ui/group/ConversationFragment.kt
index ad0f4c7..9f16ffc 100644
--- a/app/src/main/java/me/kbai/zhenxunui/ui/group/ConversationFragment.kt
+++ b/app/src/main/java/me/kbai/zhenxunui/ui/group/ConversationFragment.kt
@@ -5,15 +5,11 @@ import android.view.ViewGroup
 import androidx.appcompat.widget.Toolbar
 import androidx.core.widget.addTextChangedListener
 import androidx.fragment.app.viewModels
-import me.kbai.zhenxunui.Constants
 import me.kbai.zhenxunui.R
 import me.kbai.zhenxunui.base.BaseFragment
 import me.kbai.zhenxunui.databinding.FragmentConversationBinding
 import me.kbai.zhenxunui.extends.launchAndCollectIn
-import me.kbai.zhenxunui.extends.logI
 import me.kbai.zhenxunui.extends.setOnDebounceClickListener
-import me.kbai.zhenxunui.model.ChatMessage
-import me.kbai.zhenxunui.model.MessageType
 import me.kbai.zhenxunui.tool.GlobalToast
 import me.kbai.zhenxunui.viewmodel.ConversationViewModel
 
diff --git a/app/src/main/java/me/kbai/zhenxunui/ui/group/FriendListFragment.kt b/app/src/main/java/me/kbai/zhenxunui/ui/group/FriendListFragment.kt
index d113ed8..719cf2a 100644
--- a/app/src/main/java/me/kbai/zhenxunui/ui/group/FriendListFragment.kt
+++ b/app/src/main/java/me/kbai/zhenxunui/ui/group/FriendListFragment.kt
@@ -80,9 +80,7 @@ class FriendListFragment : BaseFragment<FragmentGroupBinding>() {
     private fun requestData(
         type: Int = FriendListType.FRIEND or FriendListType.GROUP
     ) = viewLifecycleScope.launch {
-//        if (refresh) {
         viewBinding.root.isRefreshing = true
-//        }
         viewBinding.icError.root.isVisible = false
 
         val result = mViewModel.requestList(type)
diff --git a/app/src/main/java/me/kbai/zhenxunui/viewmodel/ConsoleViewModel.kt b/app/src/main/java/me/kbai/zhenxunui/viewmodel/ConsoleViewModel.kt
index 17e3593..10892c3 100644
--- a/app/src/main/java/me/kbai/zhenxunui/viewmodel/ConsoleViewModel.kt
+++ b/app/src/main/java/me/kbai/zhenxunui/viewmodel/ConsoleViewModel.kt
@@ -1,17 +1,6 @@
 package me.kbai.zhenxunui.viewmodel
 
-import android.graphics.Color
-import android.graphics.Typeface
-import android.text.Html
-import android.text.SpannableString
 import android.text.SpannableStringBuilder
-import android.text.Spanned
-import android.text.style.ForegroundColorSpan
-import android.text.style.StyleSpan
-import android.text.style.TextAppearanceSpan
-import android.text.style.TypefaceSpan
-import androidx.core.text.toSpannable
-import androidx.core.text.toSpanned
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
@@ -28,15 +17,6 @@ import me.kbai.zhenxunui.model.SystemStatus
 import me.kbai.zhenxunui.repository.ApiRepository
 import me.kbai.zhenxunui.tool.AlwaysDifferent
 import me.kbai.zhenxunui.tool.Ansi2SpannedHelper
-import pk.ansi4j.core.DefaultFunctionFinder
-import pk.ansi4j.core.DefaultParserFactory
-import pk.ansi4j.core.DefaultTextHandler
-import pk.ansi4j.core.api.Environment
-import pk.ansi4j.core.iso6429.C0ControlFunctionHandler
-import pk.ansi4j.core.iso6429.C1ControlFunctionHandler
-import pk.ansi4j.core.iso6429.ControlSequenceHandler
-import pk.ansi4j.core.iso6429.ControlStringHandler
-import pk.ansi4j.core.iso6429.IndependentControlFunctionHandler
 
 class ConsoleViewModel : ViewModel() {
 
diff --git a/app/src/main/java/me/kbai/zhenxunui/widget/SemicircleProgressView.kt b/app/src/main/java/me/kbai/zhenxunui/widget/SemicircleProgressView.kt
index 5478f7c..3f07422 100644
--- a/app/src/main/java/me/kbai/zhenxunui/widget/SemicircleProgressView.kt
+++ b/app/src/main/java/me/kbai/zhenxunui/widget/SemicircleProgressView.kt
@@ -5,6 +5,7 @@ import android.graphics.Canvas
 import android.graphics.Paint
 import android.util.AttributeSet
 import android.view.View
+import androidx.core.content.res.use
 import me.kbai.zhenxunui.R
 import me.kbai.zhenxunui.extends.dp
 import me.kbai.zhenxunui.extends.getThemeColor
@@ -20,7 +21,7 @@ class SemicircleProgressView @JvmOverloads constructor(
         private const val SMOOTH_ANIM_TIME = 500F
     }
 
-    private var mStrokeWidth: Int
+    private var mStrokeWidth: Int = 0
 
     private val mBackgroundPaint: Paint
     private val mFillPaint: Paint