diff --git a/README.md b/README.md
index 90473bf..f3f457a 100644
--- a/README.md
+++ b/README.md
@@ -32,9 +32,6 @@
 ]
 ```
 
-注意：
-配置地址更新后，如遇到之前节目还存在的情况，可能需要重启软件后生效，后面会进行优化
-
 下载安装 [releases](https://github.com/lizongying/my-tv-0/releases/)
 
 更多地址 [my-tv](https://lyrics.run/my-tv-0.html)
@@ -44,6 +41,12 @@
 
 ## 更新日志
 
+### v1.0.5
+
+* 修复频道配置错误时可能崩溃的问题
+* 修复更新频道配置时可能不生效的问题
+* 修复图标为空时可能崩溃的问题
+
 ### v1.0.4
 
 * 在触屏设备上双击打开节目列表
diff --git a/Screenshot_20240324_100541.png b/Screenshot_20240324_100541.png
deleted file mode 100644
index 8244018..0000000
Binary files a/Screenshot_20240324_100541.png and /dev/null differ
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index e3abff8..77c9ef8 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,24 +1,25 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
     <application
+        android:name=".MyApplication"
         android:allowBackup="true"
-        android:largeHeap="true"
-        android:icon="@drawable/logo0"
-        android:logo="@drawable/logo0"
         android:banner="@drawable/banner0"
+        android:icon="@drawable/logo0"
         android:label="@string/app_name"
-        android:supportsRtl="true"
+        android:largeHeap="true"
+        android:logo="@drawable/logo0"
         android:networkSecurityConfig="@xml/network"
-        android:usesCleartextTraffic="true"
-        android:theme="@style/Theme.MyTV0">
+        android:supportsRtl="true"
+        android:theme="@style/Theme.MyTV0"
+        android:usesCleartextTraffic="true">
         <activity
             android:name=".MainActivity"
             android:exported="true"
             android:screenOrientation="landscape">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
@@ -46,7 +47,7 @@
         android:required="false" />
 
     <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/com/lizongying/mytv0/GroupAdapter.kt b/app/src/main/java/com/lizongying/mytv0/GroupAdapter.kt
index 738db6c..aa7bacf 100644
--- a/app/src/main/java/com/lizongying/mytv0/GroupAdapter.kt
+++ b/app/src/main/java/com/lizongying/mytv0/GroupAdapter.kt
@@ -16,7 +16,7 @@ import com.lizongying.mytv0.models.TVListModel
 class GroupAdapter(
     private val context: Context,
     private val recyclerView: RecyclerView,
-    private var tvgroupModel: TVGroupModel,
+    private var tvGroupModel: TVGroupModel,
 ) :
     RecyclerView.Adapter<GroupAdapter.ViewHolder>() {
 
@@ -51,7 +51,7 @@ class GroupAdapter(
     }
 
     override fun onBindViewHolder(viewHolder: ViewHolder, position: Int) {
-        val tvListModel = tvgroupModel.getTVListModel(position)!!
+        val tvListModel = tvGroupModel.getTVListModel(position)!!
         val view = viewHolder.itemView
         view.tag = position
 
@@ -67,8 +67,8 @@ class GroupAdapter(
                 viewHolder.focus(true)
                 focused = view
                 if (visiable) {
-                    if (position != tvgroupModel.position.value) {
-                        tvgroupModel.setPosition(position)
+                    if (position != tvGroupModel.position.value) {
+                        tvGroupModel.setPosition(position)
                     }
                 } else {
                     visiable = true
@@ -84,7 +84,7 @@ class GroupAdapter(
             listener?.onItemClicked(tvListModel)
         }
 
-        view.setOnKeyListener { v, keyCode, event: KeyEvent? ->
+        view.setOnKeyListener { _, keyCode, event: KeyEvent? ->
             if (event?.action == KeyEvent.ACTION_DOWN) {
                 if (keyCode == KeyEvent.KEYCODE_DPAD_UP && position == 0) {
                     recyclerView.smoothScrollToPosition(getItemCount() - 1)
@@ -102,7 +102,7 @@ class GroupAdapter(
         viewHolder.bind(tvListModel.getName())
     }
 
-    override fun getItemCount() = tvgroupModel.size()
+    override fun getItemCount() = tvGroupModel.size()
 
     class ViewHolder(private val context: Context, private val binding: GroupItemBinding) :
         RecyclerView.ViewHolder(binding.root) {
@@ -143,6 +143,11 @@ class GroupAdapter(
         this.listener = listener
     }
 
+    fun update(tvGroupModel: TVGroupModel) {
+        this.tvGroupModel = tvGroupModel
+        notifyDataSetChanged()
+    }
+
     companion object {
         private const val TAG = "CategoryAdapter"
     }
diff --git a/app/src/main/java/com/lizongying/mytv0/ListAdapter.kt b/app/src/main/java/com/lizongying/mytv0/ListAdapter.kt
index d18046d..e0422cc 100644
--- a/app/src/main/java/com/lizongying/mytv0/ListAdapter.kt
+++ b/app/src/main/java/com/lizongying/mytv0/ListAdapter.kt
@@ -1,15 +1,14 @@
 package com.lizongying.mytv0
 
 import android.content.Context
+import android.util.Log
 import android.view.KeyEvent
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.view.ViewGroup.FOCUS_BEFORE_DESCENDANTS
 import android.view.ViewGroup.FOCUS_BLOCK_DESCENDANTS
-import android.view.animation.ScaleAnimation
 import androidx.core.content.ContextCompat
-import androidx.lifecycle.LifecycleOwner
 import androidx.recyclerview.widget.RecyclerView
 import com.bumptech.glide.Glide
 import com.lizongying.mytv0.databinding.ListItemBinding
@@ -112,7 +111,10 @@ class ListAdapter(
 
         viewHolder.bindText(tvModel.tv.title)
 
-        viewHolder.bindImage(tvModel.tv.logo)
+        // maybe null
+        if (!tvModel.tv.logo.isNullOrBlank()) {
+            viewHolder.bindImage(tvModel.tv.logo)
+        }
     }
 
     override fun getItemCount() = tvListModel.size()
diff --git a/app/src/main/java/com/lizongying/mytv0/MainActivity.kt b/app/src/main/java/com/lizongying/mytv0/MainActivity.kt
index 378810a..f2e707e 100644
--- a/app/src/main/java/com/lizongying/mytv0/MainActivity.kt
+++ b/app/src/main/java/com/lizongying/mytv0/MainActivity.kt
@@ -79,7 +79,9 @@ class MainActivity : FragmentActivity() {
             }
         }
 
-        TVList.setPosition(SP.position)
+        if (!TVList.setPosition(SP.position)) {
+            TVList.setPosition(0)
+        }
     }
 
     override fun onTouchEvent(event: MotionEvent?): Boolean {
diff --git a/app/src/main/java/com/lizongying/mytv0/MenuFragment.kt b/app/src/main/java/com/lizongying/mytv0/MenuFragment.kt
index ba1124b..8bb2b25 100644
--- a/app/src/main/java/com/lizongying/mytv0/MenuFragment.kt
+++ b/app/src/main/java/com/lizongying/mytv0/MenuFragment.kt
@@ -45,16 +45,32 @@ class MenuFragment : Fragment(), GroupAdapter.ItemListener, ListAdapter.ItemList
             LinearLayoutManager(context)
         groupAdapter.setItemListener(this)
 
+        var tvListModel = TVList.groupModel.getTVListModel(TVList.groupModel.position.value!!)
+        if (tvListModel == null) {
+            TVList.groupModel.setPosition(0)
+        }
+
+        tvListModel = TVList.groupModel.getTVListModel(TVList.groupModel.position.value!!)
+
         listAdapter = ListAdapter(
             context!!,
             binding.list,
-            TVList.groupModel.getTVListModel(TVList.groupModel.position.value!!)!!,
+            tvListModel!!,
         )
         binding.list.adapter = listAdapter
         binding.list.layoutManager =
             LinearLayoutManager(context)
         listAdapter.focusable(false)
         listAdapter.setItemListener(this)
+
+        TVList.groupModel.tvGroupModel.observe(viewLifecycleOwner) { _ ->
+
+            // not first time
+            if (TVList.groupModel.tvGroupModel.value != null) {
+                groupAdapter.update(TVList.groupModel)
+            }
+        }
+
         return binding.root
     }
 
diff --git a/app/src/main/java/com/lizongying/mytv0/MyApplication.kt b/app/src/main/java/com/lizongying/mytv0/MyApplication.kt
new file mode 100644
index 0000000..d986876
--- /dev/null
+++ b/app/src/main/java/com/lizongying/mytv0/MyApplication.kt
@@ -0,0 +1,32 @@
+package com.lizongying.mytv0
+
+import android.app.Application
+import android.os.Handler
+import android.os.Looper
+import android.widget.Toast
+
+class MyApplication : Application() {
+
+    companion object {
+        private lateinit var instance: MyApplication
+
+        fun getInstance(): MyApplication {
+            return instance
+        }
+    }
+
+    override fun onCreate() {
+        super.onCreate()
+        instance = this
+    }
+
+    fun toast(message: CharSequence = "", duration: Int = Toast.LENGTH_SHORT) {
+        Handler(Looper.getMainLooper()).post {
+            Toast.makeText(applicationContext, message, duration).show()
+        }
+    }
+}
+
+fun String.showToast(duration: Int = Toast.LENGTH_SHORT) {
+    MyApplication.getInstance().toast(this, duration)
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/lizongying/mytv0/SettingFragment.kt b/app/src/main/java/com/lizongying/mytv0/SettingFragment.kt
index 85b36e8..77a1295 100644
--- a/app/src/main/java/com/lizongying/mytv0/SettingFragment.kt
+++ b/app/src/main/java/com/lizongying/mytv0/SettingFragment.kt
@@ -6,6 +6,7 @@ import android.util.Log
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import android.widget.Toast
 import androidx.fragment.app.Fragment
 import com.lizongying.mytv0.databinding.SettingBinding
 import com.lizongying.mytv0.models.TVList
@@ -54,6 +55,7 @@ class SettingFragment: Fragment() {
         binding.checkVersion.setOnClickListener(OnClickListenerCheckVersion(updateManager))
 
         binding.confirmButton.setOnClickListener {
+
             val uriEditText = binding.myEditText
             var uri = uriEditText.text.toString()
 
diff --git a/app/src/main/java/com/lizongying/mytv0/models/TVGroupModel.kt b/app/src/main/java/com/lizongying/mytv0/models/TVGroupModel.kt
index 9f86d2e..3c52992 100644
--- a/app/src/main/java/com/lizongying/mytv0/models/TVGroupModel.kt
+++ b/app/src/main/java/com/lizongying/mytv0/models/TVGroupModel.kt
@@ -6,8 +6,8 @@ import androidx.lifecycle.ViewModel
 import com.lizongying.mytv0.SP
 
 class TVGroupModel : ViewModel() {
-    private val _tvGroupModel = MutableLiveData<MutableList<TVListModel>>()
-    val tvGroupModel: LiveData<MutableList<TVListModel>>
+    private val _tvGroupModel = MutableLiveData<List<TVListModel>>()
+    val tvGroupModel: LiveData<List<TVListModel>>
         get() = _tvGroupModel
 
     private val _position = MutableLiveData<Int>()
@@ -18,8 +18,8 @@ class TVGroupModel : ViewModel() {
         _position.value = position
     }
 
-    fun setTVListModelList(tvTVListModelList: MutableList<TVListModel>) {
-        _tvGroupModel.value = tvTVListModelList
+    fun setTVListModelList(tvListModelList: List<TVListModel>) {
+        _tvGroupModel.value = tvListModelList
     }
 
     fun addTVListModel(tvListModel: TVListModel) {
@@ -27,10 +27,22 @@ class TVGroupModel : ViewModel() {
             _tvGroupModel.value = mutableListOf(tvListModel)
             return
         }
-        _tvGroupModel.value?.add(tvListModel)
+
+        val newList = _tvGroupModel.value!!.toMutableList()
+        newList.add(tvListModel)
+        _tvGroupModel.value = newList
+    }
+
+    fun clear() {
+        _tvGroupModel.value = mutableListOf(getTVListModel(0)!!, getTVListModel(1)!!)
+        setPosition(0)
+        getTVListModel(1)?.clear()
     }
 
     fun getTVListModel(idx: Int): TVListModel? {
+        if (idx >= size()) {
+            return null
+        }
         return _tvGroupModel.value?.get(idx)
     }
 
diff --git a/app/src/main/java/com/lizongying/mytv0/models/TVList.kt b/app/src/main/java/com/lizongying/mytv0/models/TVList.kt
index 986017c..80d72bc 100644
--- a/app/src/main/java/com/lizongying/mytv0/models/TVList.kt
+++ b/app/src/main/java/com/lizongying/mytv0/models/TVList.kt
@@ -2,9 +2,12 @@ package com.lizongying.mytv0.models
 
 import android.content.Context
 import android.util.Log
+import android.widget.Toast
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
+import com.google.gson.JsonSyntaxException
 import com.lizongying.mytv0.R
+import com.lizongying.mytv0.showToast
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -17,7 +20,7 @@ object TVList {
     private lateinit var appDirectory: File
     private lateinit var serverUrl: String
     private lateinit var list: List<TV>
-    lateinit var listModel: List<TVModel>
+    var listModel: List<TVModel> = listOf()
     val groupModel = TVGroupModel()
 
     private val _position = MutableLiveData<Int>()
@@ -38,7 +41,18 @@ object TVList {
                 .use { it.readText() }
         }
         Log.i("", "channel $str")
-        str2List(str)
+
+        groupModel.addTVListModel(TVListModel("我的收藏"))
+
+        groupModel.addTVListModel(TVListModel("全部频道"))
+
+        try {
+            str2List(str)
+        } catch (e: Exception) {
+            Log.e("", "error $e")
+            file.deleteOnExit()
+            Toast.makeText(context, "读取频道失败，请在菜单中进行设置", Toast.LENGTH_LONG).show()
+        }
     }
 
     private fun update() {
@@ -61,11 +75,20 @@ object TVList {
                     withContext(Dispatchers.Main) {
                         str2List(str)
                     }
+                    "频道读取成功".showToast()
                 } else {
                     Log.e("", "request status ${response.code()}")
+                    "频道状态错误".showToast()
                 }
+            } catch (e: JsonSyntaxException) {
+                Log.e("JSON Parse Error", e.toString())
+                "频道格式错误".showToast()
+            } catch (e: NullPointerException) {
+                Log.e("Null Pointer Error", e.toString())
+                "无法读取频道".showToast()
             } catch (e: Exception) {
                 Log.e("", "request error $e")
+                "频道请求错误".showToast()
             }
         }
     }
@@ -85,14 +108,10 @@ object TVList {
             TVModel(tv)
         }
 
-        val group: MutableList<TVListModel> = mutableListOf()
+        groupModel.clear()
 
-        var tvListModel = TVListModel("我的收藏")
-        group.add(tvListModel)
-
-        tvListModel = TVListModel("全部频道")
-        tvListModel.setTVListModel(listModel)
-        group.add(tvListModel)
+        // 全部频道
+        groupModel.getTVListModel(1)?.setTVListModel(listModel)
 
         val map: MutableMap<String, MutableList<TVModel>> = mutableMapOf()
         for ((id, v) in list.withIndex()) {
@@ -104,27 +123,30 @@ object TVList {
         }
 
         for ((k, v) in map) {
-            tvListModel = TVListModel(k)
+            val tvListModel = TVListModel(k)
             for (v1 in v) {
                 tvListModel.addTVModel(v1)
             }
-            group.add(tvListModel)
+            groupModel.addTVListModel(tvListModel)
         }
-
-        groupModel.setTVListModelList(group)
     }
 
     fun getTVModel(idx: Int): TVModel {
         return listModel[idx]
     }
 
-    fun setPosition(position: Int) {
+    fun setPosition(position: Int): Boolean {
+        if (position >= size()) {
+            return false
+        }
+
         if (_position.value != position) {
             _position.value = position
         }
 
         // set a new position or retry when position same
         listModel[position].setReady()
+        return true
     }
 
     fun size(): Int {
diff --git a/app/src/main/java/com/lizongying/mytv0/models/TVListModel.kt b/app/src/main/java/com/lizongying/mytv0/models/TVListModel.kt
index 2cccac4..06b7b78 100644
--- a/app/src/main/java/com/lizongying/mytv0/models/TVListModel.kt
+++ b/app/src/main/java/com/lizongying/mytv0/models/TVListModel.kt
@@ -9,8 +9,8 @@ class TVListModel(private val name: String) : ViewModel() {
         return name
     }
 
-    private val _tvListModel = MutableLiveData<MutableList<TVModel>>()
-    val tvListModel: LiveData<MutableList<TVModel>>
+    private val _tvListModel = MutableLiveData<List<TVModel>>()
+    val tvListModel: LiveData<List<TVModel>>
         get() = _tvListModel
 
     private val _position = MutableLiveData<Int>()
@@ -30,7 +30,7 @@ class TVListModel(private val name: String) : ViewModel() {
     }
 
     fun setTVListModel(tvListModel: List<TVModel>) {
-        _tvListModel.value = tvListModel.toMutableList()
+        _tvListModel.value = tvListModel
     }
 
     fun addTVModel(tvModel: TVModel) {
@@ -38,7 +38,15 @@ class TVListModel(private val name: String) : ViewModel() {
             _tvListModel.value = mutableListOf(tvModel)
             return
         }
-        _tvListModel.value?.add(tvModel)
+
+        val newList = _tvListModel.value!!.toMutableList()
+        newList.add(tvModel)
+        _tvListModel.value = newList
+    }
+
+    fun clear() {
+        _tvListModel.value = mutableListOf()
+        setPosition(0)
     }
 
     fun getTVModel(idx: Int): TVModel? {
diff --git a/build.gradle.kts b/build.gradle.kts
index 0da18c4..cac8778 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,5 +1,5 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
-    id("com.android.application") version "8.2.2" apply false
+    id("com.android.application") version "8.3.1" apply false
     id("org.jetbrains.kotlin.android") version "1.9.10" apply false
 }
\ No newline at end of file
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 5c0faf1..d1a6cee 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 #Thu Dec 14 14:50:34 HKT 2023
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-rc-1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists