diff --git a/background/src/main/java/com/gyf/csams/MainActivity.kt b/background/src/main/java/com/gyf/csams/MainActivity.kt
index 8007e4c..75f5942 100644
--- a/background/src/main/java/com/gyf/csams/MainActivity.kt
+++ b/background/src/main/java/com/gyf/csams/MainActivity.kt
@@ -8,7 +8,7 @@ import androidx.compose.material.Surface
 import androidx.compose.material.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.tooling.preview.Preview
-import com.gyf.csams.uikit.theme.CSAMSTheme
+import com.gyf.lib.uikit.theme.CSAMSTheme
 
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
diff --git a/background/src/main/java/com/gyf/csams/uikit/theme/Theme.kt b/background/src/main/java/com/gyf/csams/uikit/theme/Theme.kt
deleted file mode 100644
index 4392080..0000000
--- a/background/src/main/java/com/gyf/csams/uikit/theme/Theme.kt
+++ /dev/null
@@ -1,44 +0,0 @@
-package com.gyf.csams.uikit.theme
-
-import androidx.compose.foundation.isSystemInDarkTheme
-import androidx.compose.material.MaterialTheme
-import androidx.compose.material.darkColors
-import androidx.compose.material.lightColors
-import androidx.compose.runtime.Composable
-
-private val DarkColorPalette = darkColors(
-    primary = Purple200,
-    primaryVariant = Purple700,
-    secondary = Teal200
-)
-
-private val LightColorPalette = lightColors(
-    primary = Purple500,
-    primaryVariant = Purple700,
-    secondary = Teal200
-
-    /* Other default colors to override
-    background = Color.White,
-    surface = Color.White,
-    onPrimary = Color.White,
-    onSecondary = Color.Black,
-    onBackground = Color.Black,
-    onSurface = Color.Black,
-    */
-)
-
-@Composable
-fun CSAMSTheme(darkTheme: Boolean = isSystemInDarkTheme(), content: @Composable() () -> Unit) {
-    val colors = if (darkTheme) {
-        DarkColorPalette
-    } else {
-        LightColorPalette
-    }
-
-    MaterialTheme(
-        colors = colors,
-        typography = Typography,
-        shapes = Shapes,
-        content = content
-    )
-}
\ No newline at end of file
diff --git a/build.gradle.kts b/build.gradle.kts
index edde590..163910a 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -7,7 +7,7 @@ buildscript {
     //APP应用名字
     val foreground_app_name by extra("学生社团")
     val SERVER_ADDRESS by extra("http://192.168.50.107:8080")
-    val room_version by extra("2.2.6")
+    val room_version by extra("2.3.0")
     val kotlin_version by extra("1.4.32")
     val background_app_name by extra("社团管理")
     repositories {
diff --git a/foreground/build.gradle.kts b/foreground/build.gradle.kts
index 2f2a050..612e5f4 100644
--- a/foreground/build.gradle.kts
+++ b/foreground/build.gradle.kts
@@ -81,6 +81,6 @@ dependencies {
      * 包含核心和基本的 View 匹配器、操作和断言
      */
     androidTestImplementation("androidx.test.espresso:espresso-core:3.3.0")
-    androidTestImplementation("androidx.compose.ui:ui-test-junit4:${rootProject.extra["compose_version"]}")
+//    androidTestImplementation("androidx.compose.ui:ui-test-junit4:${rootProject.extra["compose_version"]}")
 
 }
\ No newline at end of file
diff --git a/foreground/src/main/java/com/gyf/csams/account/ui/AccountActivity.kt b/foreground/src/main/java/com/gyf/csams/account/ui/AccountActivity.kt
index 98bab09..2962773 100644
--- a/foreground/src/main/java/com/gyf/csams/account/ui/AccountActivity.kt
+++ b/foreground/src/main/java/com/gyf/csams/account/ui/AccountActivity.kt
@@ -30,7 +30,6 @@ import com.gyf.csams.account.model.DialogMessage
 import com.gyf.csams.uikit.AnimationText
 import com.gyf.csams.uikit.BaseTextField
 import com.gyf.csams.uikit.Body
-import com.gyf.csams.uikit.theme.CSAMSTheme
 import com.orhanobut.logger.Logger
 
 
@@ -44,18 +43,17 @@ class AccountActivity : ComponentActivity() {
         super.onCreate(savedInstanceState)
 
         setContent {
-            CSAMSTheme {
-                Body { nav, scaffoldState ->
-                    NavHost(navController = nav, startDestination = AccountRoute.login.name) {
-                        composable(AccountRoute.login.name) {
-                            Account(
-                                scaffoldState = scaffoldState,
-                                route = AccountRoute.login
-                            ) { isValidForm: Boolean, accountViewModel: AccountViewModel ->
-                                Spacer(modifier = Modifier.height(10.dp))
-
-                                OutlinedButton(
-                                    onClick = { accountViewModel.login() },
+            Body { nav, scaffoldState ->
+                NavHost(navController = nav, startDestination = AccountRoute.login.name) {
+                    composable(AccountRoute.login.name) {
+                        Account(
+                            scaffoldState = scaffoldState,
+                            route = AccountRoute.login
+                        ) { isValidForm: Boolean, accountViewModel: AccountViewModel ->
+                            Spacer(modifier = Modifier.height(10.dp))
+
+                            OutlinedButton(
+                                onClick = { accountViewModel.login() },
                                     enabled = isValidForm,
                                     modifier = Modifier
                                         .fillMaxWidth()
@@ -114,7 +112,6 @@ class AccountActivity : ComponentActivity() {
                     }
                 }
             }
-        }
     }
 
     /**
diff --git a/foreground/src/main/java/com/gyf/csams/association/ui/AssociationActivity.kt b/foreground/src/main/java/com/gyf/csams/association/ui/AssociationActivity.kt
index dd64bb6..c2cc74a 100644
--- a/foreground/src/main/java/com/gyf/csams/association/ui/AssociationActivity.kt
+++ b/foreground/src/main/java/com/gyf/csams/association/ui/AssociationActivity.kt
@@ -29,7 +29,6 @@ import com.gyf.csams.R
 import com.gyf.csams.activity.ui.ActivityDetailActivity
 import com.gyf.csams.association.model.*
 import com.gyf.csams.uikit.*
-import com.gyf.csams.uikit.theme.CSAMSTheme
 import com.gyf.csams.util.randomChinese
 import com.orhanobut.logger.Logger
 
@@ -42,8 +41,8 @@ class AssociationActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContent {
-            CSAMSTheme {
-                Body { nav, scaffoldState ->
+
+        Body { nav, scaffoldState ->
                     val context = LocalContext.current as AssociationActivity
                     val model: AssociationViewModel = viewModel()
                     val currentMenuName: AssociationMenu by model.currentMenu.observeAsState(
@@ -169,7 +168,7 @@ class AssociationActivity : ComponentActivity() {
                     }
 
                 }
-            }
+
         }
     }
 
diff --git a/foreground/src/main/java/com/gyf/csams/association/ui/RegAssociationActivity.kt b/foreground/src/main/java/com/gyf/csams/association/ui/RegAssociationActivity.kt
index 58a7d20..cc07a46 100644
--- a/foreground/src/main/java/com/gyf/csams/association/ui/RegAssociationActivity.kt
+++ b/foreground/src/main/java/com/gyf/csams/association/ui/RegAssociationActivity.kt
@@ -35,7 +35,6 @@ import androidx.lifecycle.viewmodel.compose.viewModel
 import com.gyf.csams.R
 import com.gyf.csams.association.model.RegAssociationViewModel
 import com.gyf.csams.uikit.*
-import com.gyf.csams.uikit.theme.CSAMSTheme
 import com.orhanobut.logger.Logger
 
 
@@ -47,8 +46,8 @@ class RegAssociationActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContent {
-            CSAMSTheme {
-                Body { scaffoldState ->
+
+        Body { scaffoldState ->
                     MainFrame(background = {
                         Background(
                             BackgroundImage.RegAssociation,
@@ -79,7 +78,7 @@ class RegAssociationActivity : ComponentActivity() {
                         ShowSnackbar(scaffoldState = scaffoldState)
                     }
                 }
-            }
+
         }
     }
 
diff --git a/foreground/src/main/java/com/gyf/csams/main/ui/MainActivity.kt b/foreground/src/main/java/com/gyf/csams/main/ui/MainActivity.kt
index 7ced8a3..5bf0ef6 100644
--- a/foreground/src/main/java/com/gyf/csams/main/ui/MainActivity.kt
+++ b/foreground/src/main/java/com/gyf/csams/main/ui/MainActivity.kt
@@ -19,7 +19,6 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.text.style.TextOverflow
-import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavHostController
@@ -34,7 +33,6 @@ import com.gyf.csams.association.ui.RegAssociationActivity
 import com.gyf.csams.main.model.*
 import com.gyf.csams.message.ui.MessageActivity
 import com.gyf.csams.uikit.*
-import com.gyf.csams.uikit.theme.CSAMSTheme
 import com.gyf.csams.util.randomChinese
 
 
@@ -52,7 +50,7 @@ class MainActivity : ComponentActivity() {
         imageModel = ImageModel(application = application, Api.buildUrl(MainApi.HotActivity))
 
         setContent {
-            CSAMSTheme {
+
                 Body { nav, scaffoldState ->
                     NavHost(navController = nav, startDestination = MainMenu.Main.name) {
                         composable(MainMenu.Main.name) {
@@ -70,15 +68,10 @@ class MainActivity : ComponentActivity() {
                     }
 
                 }
-            }
-        }
 
+        }
 
-    }
 
-    override fun onStart() {
-        super.onStart()
-        imageModel.start()
     }
 
     override fun onResume() {
@@ -490,9 +483,14 @@ class MainActivity : ComponentActivity() {
      *
      */
     @Composable
-    private fun PosterWithDesc() {
+    private fun PosterWithDesc(scaffoldModel: ScaffoldModel = viewModel()) {
 
         val context = LocalContext.current as MainActivity
+        val error by context.imageModel.error.observeAsState()
+        error?.let {
+            scaffoldModel.update(message = it)
+            context.imageModel.clearError()
+        }
         Carousel(imageBitmap = context.imageModel.image) {
             Column(modifier = Modifier.clickable(onClick = {
                 context.startActivity(Intent(context, ActivityDetailActivity::class.java))
@@ -513,14 +511,6 @@ class MainActivity : ComponentActivity() {
         }
     }
 
-
-    @Preview(showBackground = true)
-    @Composable
-    fun DefaultPreview() {
-        CSAMSTheme {
-            Text(text = "666")
-        }
-    }
 }
 
 
diff --git a/foreground/src/main/java/com/gyf/csams/uikit/BaseView.kt b/foreground/src/main/java/com/gyf/csams/uikit/BaseView.kt
index fb5ae49..095d301 100644
--- a/foreground/src/main/java/com/gyf/csams/uikit/BaseView.kt
+++ b/foreground/src/main/java/com/gyf/csams/uikit/BaseView.kt
@@ -26,6 +26,7 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.text.input.ImeAction
 import androidx.compose.ui.text.input.VisualTransformation
 import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
@@ -36,6 +37,7 @@ import androidx.navigation.compose.rememberNavController
 import com.gyf.csams.APP
 import com.gyf.csams.R
 import com.gyf.csams.main.model.MarqueeViewModel
+import com.gyf.lib.uikit.theme.CSAMSTheme
 import com.orhanobut.logger.Logger
 import kotlinx.coroutines.launch
 
@@ -626,11 +628,13 @@ fun Background(image: BackgroundImage, alpha: Float = DefaultAlpha) {
  */
 @Composable
 fun Body(content: @Composable (scaffoldState: ScaffoldState) -> Unit) {
-    Surface(color = MaterialTheme.colors.background) {
-        val scaffoldState = rememberScaffoldState()
+    CSAMSTheme {
+        Surface(color = MaterialTheme.colors.background) {
+            val scaffoldState = rememberScaffoldState()
 
-        Scaffold(scaffoldState = scaffoldState) {
-            content(scaffoldState = scaffoldState)
+            Scaffold(scaffoldState = scaffoldState) {
+                content(scaffoldState = scaffoldState)
+            }
         }
     }
 }
@@ -642,12 +646,14 @@ fun Body(content: @Composable (scaffoldState: ScaffoldState) -> Unit) {
  */
 @Composable
 fun Body(content: @Composable (nav: NavHostController, scaffoldState: ScaffoldState) -> Unit) {
-    Surface(color = MaterialTheme.colors.background) {
-        val navController = rememberNavController()
-        val scaffoldState = rememberScaffoldState()
+    CSAMSTheme {
+        Surface(color = MaterialTheme.colors.background) {
+            val navController = rememberNavController()
+            val scaffoldState = rememberScaffoldState()
 
-        Scaffold(scaffoldState = scaffoldState) {
-            content(nav = navController, scaffoldState = scaffoldState)
+            Scaffold(scaffoldState = scaffoldState) {
+                content(nav = navController, scaffoldState = scaffoldState)
+            }
         }
     }
 }
@@ -776,6 +782,10 @@ fun MyBottomAppBarPreview() {
     }
 }
 
+@Preview
+@Composable
 fun TestPreview() {
-
+    CSAMSTheme {
+        Text(text = "fuckyou")
+    }
 }
\ No newline at end of file
diff --git a/foreground/src/main/java/com/gyf/csams/uikit/ViewModel.kt b/foreground/src/main/java/com/gyf/csams/uikit/ViewModel.kt
index 9bb5e00..8b06e8d 100644
--- a/foreground/src/main/java/com/gyf/csams/uikit/ViewModel.kt
+++ b/foreground/src/main/java/com/gyf/csams/uikit/ViewModel.kt
@@ -92,6 +92,12 @@ class ImageModel(application: Application, private val urlPath: String) :
     private val _imageUrls = MutableLiveData<List<String>>()
     val image: LiveData<ImageBitmap> = _image
     private var job: Job? = null
+    private val _error = MutableLiveData<String>()
+    val error: LiveData<String> = _error
+
+    fun clearError() {
+        _error.value = null
+    }
 
     /**
      * 加载默认图片
@@ -118,7 +124,7 @@ class ImageModel(application: Application, private val urlPath: String) :
             job = viewModelScope.launch {
                 HttpClient.get(
                     url = urlPath,
-                    SimpleCallback<List<String>>("请求图片url列表", onSuccess = {
+                    SimpleCallback<List<String>>("获取轮播图", onSuccess = {
                         _imageUrls.postValue(it.body)
                         var index = 0
                         _imageUrls.value?.apply {
@@ -138,6 +144,7 @@ class ImageModel(application: Application, private val urlPath: String) :
                         }
                     }, onFail = {
                         Logger.e("无法从接口地址：${urlPath}获取图片url列表")
+                        _error.postValue(it)
                         defaultLoad()
                     }, type = object : TypeToken<List<String>>() {}.type)
                 )
diff --git a/foreground/src/main/java/com/gyf/csams/uikit/theme/Color.kt b/foreground/src/main/java/com/gyf/csams/uikit/theme/Color.kt
deleted file mode 100644
index cbec799..0000000
--- a/foreground/src/main/java/com/gyf/csams/uikit/theme/Color.kt
+++ /dev/null
@@ -1,8 +0,0 @@
-package com.gyf.csams.uikit.theme
-
-import androidx.compose.ui.graphics.Color
-
-val Purple200 = Color(0xFFBB86FC)
-val Purple500 = Color(0xFF6200EE)
-val Purple700 = Color(0xFF3700B3)
-val Teal200 = Color(0xFF03DAC5)
\ No newline at end of file
diff --git a/foreground/src/main/java/com/gyf/csams/uikit/theme/Shape.kt b/foreground/src/main/java/com/gyf/csams/uikit/theme/Shape.kt
deleted file mode 100644
index e2f4bfb..0000000
--- a/foreground/src/main/java/com/gyf/csams/uikit/theme/Shape.kt
+++ /dev/null
@@ -1,11 +0,0 @@
-package com.gyf.csams.uikit.theme
-
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.material.Shapes
-import androidx.compose.ui.unit.dp
-
-val Shapes = Shapes(
-    small = RoundedCornerShape(4.dp),
-    medium = RoundedCornerShape(4.dp),
-    large = RoundedCornerShape(0.dp)
-)
\ No newline at end of file
diff --git a/foreground/src/main/java/com/gyf/csams/uikit/theme/Type.kt b/foreground/src/main/java/com/gyf/csams/uikit/theme/Type.kt
deleted file mode 100644
index 5dcc466..0000000
--- a/foreground/src/main/java/com/gyf/csams/uikit/theme/Type.kt
+++ /dev/null
@@ -1,28 +0,0 @@
-package com.gyf.csams.uikit.theme
-
-import androidx.compose.material.Typography
-import androidx.compose.ui.text.TextStyle
-import androidx.compose.ui.text.font.FontFamily
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.unit.sp
-
-// Set of Material typography styles to start with
-val Typography = Typography(
-    body1 = TextStyle(
-        fontFamily = FontFamily.Default,
-        fontWeight = FontWeight.Normal,
-        fontSize = 16.sp
-    )
-    /* Other default text styles to override
-    button = TextStyle(
-        fontFamily = FontFamily.Default,
-        fontWeight = FontWeight.W500,
-        fontSize = 14.sp
-    ),
-    caption = TextStyle(
-        fontFamily = FontFamily.Default,
-        fontWeight = FontWeight.Normal,
-        fontSize = 12.sp
-    )
-    */
-)
\ No newline at end of file
diff --git a/foreground/src/main/java/com/gyf/csams/util/HttpUtil.kt b/foreground/src/main/java/com/gyf/csams/util/HttpUtil.kt
index 8488d5b..80f322c 100644
--- a/foreground/src/main/java/com/gyf/csams/util/HttpUtil.kt
+++ b/foreground/src/main/java/com/gyf/csams/util/HttpUtil.kt
@@ -9,6 +9,7 @@ import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.RequestBody.Companion.toRequestBody
 import java.io.IOException
 import java.lang.reflect.Type
+import java.net.SocketTimeoutException
 
 object HttpClient {
     private val httpClient: OkHttpClient = OkHttpClient()
@@ -136,7 +137,14 @@ class SimpleCallback<T>(
     }
 
     override fun onFailure(call: Call, e: IOException) {
-        onFail("${action}失败，请联系管理员")
+        when (e) {
+            is SocketTimeoutException -> {
+                onFail("${action}失败，网络连接超时！")
+            }
+            else -> {
+                onFail("${action}失败，请联系管理员")
+            }
+        }
         Logger.e(e, "${action}请求失败，发生IO异常")
     }
 
diff --git a/foreground/src/test/java/com/gyf/csams/ExampleUnitTest.kt b/foreground/src/test/java/com/gyf/csams/ExampleUnitTest.kt
index 83bf7f9..e9e784e 100644
--- a/foreground/src/test/java/com/gyf/csams/ExampleUnitTest.kt
+++ b/foreground/src/test/java/com/gyf/csams/ExampleUnitTest.kt
@@ -4,6 +4,7 @@ import com.google.gson.Gson
 import com.google.gson.reflect.TypeToken
 import com.gyf.csams.util.ApiResponse
 import com.gyf.csams.util.randomChinese
+import com.gyf.lib.uikit.TestLib
 import org.junit.Assert.assertEquals
 import org.junit.Test
 
@@ -34,10 +35,9 @@ class ExampleUnitTest {
     }
 
 
-
     @Test
-    fun testCharRange(){
-        repeat(100){
+    fun testCharRange() {
+        repeat(100) {
             println(randomChinese())
         }
 
@@ -45,5 +45,11 @@ class ExampleUnitTest {
 //            .format(java.time.Instant.ofEpochMilli(1532358895000)))
     }
 
+    @Test
+    fun testLib() {
+        TestLib.hello()
+        Fuck()
+    }
+
 }
 
diff --git a/lib/build.gradle.kts b/lib/build.gradle.kts
index 88648cc..bec0ea0 100644
--- a/lib/build.gradle.kts
+++ b/lib/build.gradle.kts
@@ -1,7 +1,7 @@
 plugins {
     id("com.android.library")
     id("kotlin-android")
-    id("org.jetbrains.kotlin.plugin.serialization") version "1.4.32"
+//    id("org.jetbrains.kotlin.plugin.serialization") version "1.4.32"
 }
 
 android {
@@ -30,7 +30,16 @@ android {
     }
     kotlinOptions {
         jvmTarget = "1.8"
+        freeCompilerArgs = listOf(
+            "-P",
+            "plugin:androidx.compose.compiler.plugins.kotlin:suppressKotlinVersionCompatibilityCheck=true"
+        )
     }
+
+    buildFeatures {
+        compose = true
+    }
+
 }
 
 dependencies {
@@ -90,7 +99,7 @@ dependencies {
     /**
      * https://kotlinlang.org/docs/serialization.html
      */
-    api("org.jetbrains.kotlinx:kotlinx-serialization-json:1.1.0")
+    api("org.jetbrains.kotlinx:kotlinx-serialization-json:1.2.1")
     /**
      * https://developer.android.com/jetpack/androidx/releases/navigation
      */
diff --git a/background/src/main/java/com/gyf/csams/uikit/theme/Color.kt b/lib/src/main/java/com/gyf/lib/uikit/theme/Color.kt
similarity index 100%
rename from background/src/main/java/com/gyf/csams/uikit/theme/Color.kt
rename to lib/src/main/java/com/gyf/lib/uikit/theme/Color.kt
diff --git a/background/src/main/java/com/gyf/csams/uikit/theme/Shape.kt b/lib/src/main/java/com/gyf/lib/uikit/theme/Shape.kt
similarity index 100%
rename from background/src/main/java/com/gyf/csams/uikit/theme/Shape.kt
rename to lib/src/main/java/com/gyf/lib/uikit/theme/Shape.kt
diff --git a/foreground/src/main/java/com/gyf/csams/uikit/theme/Theme.kt b/lib/src/main/java/com/gyf/lib/uikit/theme/Theme.kt
similarity index 94%
rename from foreground/src/main/java/com/gyf/csams/uikit/theme/Theme.kt
rename to lib/src/main/java/com/gyf/lib/uikit/theme/Theme.kt
index 042773b..ccaa674 100644
--- a/foreground/src/main/java/com/gyf/csams/uikit/theme/Theme.kt
+++ b/lib/src/main/java/com/gyf/lib/uikit/theme/Theme.kt
@@ -1,10 +1,11 @@
-package com.gyf.csams.uikit.theme
+package com.gyf.lib.uikit.theme
 
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.material.MaterialTheme
 import androidx.compose.material.darkColors
 import androidx.compose.material.lightColors
 import androidx.compose.runtime.Composable
+import com.gyf.csams.uikit.theme.*
 
 private val DarkColorPalette = darkColors(
     primary = Purple200,
diff --git a/background/src/main/java/com/gyf/csams/uikit/theme/Type.kt b/lib/src/main/java/com/gyf/lib/uikit/theme/Type.kt
similarity index 100%
rename from background/src/main/java/com/gyf/csams/uikit/theme/Type.kt
rename to lib/src/main/java/com/gyf/lib/uikit/theme/Type.kt