diff --git a/composeApp/src/androidMain/AndroidManifest.xml b/composeApp/src/androidMain/AndroidManifest.xml
index c5db0b1..d56ee80 100644
--- a/composeApp/src/androidMain/AndroidManifest.xml
+++ b/composeApp/src/androidMain/AndroidManifest.xml
@@ -1,6 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
+    <!-- 添加网络权限 -->
+    <uses-permission android:name="android.permission.INTERNET" />
+    <!-- 可选:访问网络状态权限 -->
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
diff --git a/composeApp/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/App.kt b/composeApp/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/App.kt
index c18ce86..951cec4 100644
--- a/composeApp/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/App.kt
+++ b/composeApp/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/App.kt
@@ -19,15 +19,24 @@ import activityanalyzer.composeapp.generated.resources.compose_multiplatform
 fun App() {
     MaterialTheme {
         var showContent by remember { mutableStateOf(false) }
+        var greetingText by remember { mutableStateOf("加载中...") }
+
+        LaunchedEffect(key1 = Unit) {
+            greetingText = try {
+                Greeting().greet()
+            } catch (e: Exception) {
+                "错误：${e.message}"
+            }
+        }
+
         Column(Modifier.fillMaxWidth(), horizontalAlignment = Alignment.CenterHorizontally) {
             Button(onClick = { showContent = !showContent }) {
                 Text("Click me!")
             }
             AnimatedVisibility(showContent) {
-                val greeting = remember { Greeting().greet() }
                 Column(Modifier.fillMaxWidth(), horizontalAlignment = Alignment.CenterHorizontally) {
                     Image(painterResource(Res.drawable.compose_multiplatform), null)
-                    Text("Compose: $greeting")
+                    Text("Compose: $greetingText")
                 }
             }
         }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index f2930d3..859945e 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -6,17 +6,17 @@ android-targetSdk = "35"
 androidx-activityCompose = "1.10.1"
 androidx-appcompat = "1.7.0"
 androidx-constraintlayout = "2.2.1"
-androidx-core-ktx = "1.15.0"
+androidx-core-ktx = "1.16.0"
 androidx-espresso-core = "3.6.1"
 androidx-lifecycle = "2.8.4"
 androidx-material = "1.12.0"
 androidx-test-junit = "1.2.1"
 compose-multiplatform = "1.7.3"
 junit = "4.13.2"
-kotlin = "2.1.10"
+kotlin = "2.1.20"
 kotlinx-coroutines = "1.10.1"
-kotlinxSerializationJson = "1.6.2"
-ktorClientCore = "2.3.8"
+kotlinxSerializationJson = "1.8.0"
+ktorClientCore = "3.1.1"
 
 [libraries]
 kotlin-test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }
diff --git a/shared/build.gradle.kts b/shared/build.gradle.kts
index 3cb2a61..25f6dc7 100644
--- a/shared/build.gradle.kts
+++ b/shared/build.gradle.kts
@@ -4,6 +4,8 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 plugins {
     alias(libs.plugins.kotlinMultiplatform)
     alias(libs.plugins.androidLibrary)
+
+    kotlin("plugin.serialization") version libs.versions.kotlin.get()
 }
 
 kotlin {
diff --git a/shared/src/androidMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.kt b/shared/src/androidMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.kt
new file mode 100644
index 0000000..8321ed4
--- /dev/null
+++ b/shared/src/androidMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.kt
@@ -0,0 +1,8 @@
+package com.grtsinry43.activityanalyzer
+
+actual fun getScreenTime(): ScreenTime {
+    return object : ScreenTime {
+        override val screenTime: Long
+            get() = 0L // TODO: Implement the actual logic to get screen time on Android
+    }
+}
\ No newline at end of file
diff --git a/shared/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/Greeting.kt b/shared/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/Greeting.kt
index cdd9351..c3963a5 100644
--- a/shared/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/Greeting.kt
+++ b/shared/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/Greeting.kt
@@ -8,29 +8,23 @@ import kotlinx.serialization.Serializable
 class Greeting {
     private val platform = getPlatform()
 
-    fun greet(): String {
-//        val response: NetworkResponse =
-//            NetworkModule.httpClient.get("https://wlbzx.grtsinry43.com/api/time").body()
-//        println("response is : $response")
-        return "Hello, ${platform.name}! "
-//        +"Current time is ${response.data.time}"
+    suspend fun greet(): String {
+        val response: NetworkResponse =
+            NetworkModule.httpClient.get("https://wlbzx.grtsinry43.com/api/time").body()
+        println("response is : $response")
+        return "Hello, ${platform.name}! " + "Current time is ${response.data.time}"
     }
 }
 
 @Serializable
 data class NetworkResponse(
-    @SerialName("code")
     val code: Int,
-    @SerialName("message")
-    val message: String,
-    @SerialName("data")
+    val msg: String,
     val data: TimeResponse
 )
 
 @Serializable
 data class TimeResponse(
-    @SerialName("time")
     val time: String,
-    @SerialName("count")
     val count: Int
 )
\ No newline at end of file
diff --git a/shared/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/NetworkModule.kt b/shared/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/NetworkModule.kt
index 7847921..f0a64f9 100644
--- a/shared/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/NetworkModule.kt
+++ b/shared/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/NetworkModule.kt
@@ -11,6 +11,8 @@ object NetworkModule {
             json(Json {
                 prettyPrint = true
                 isLenient = true
+                ignoreUnknownKeys = true
+                coerceInputValues = true  // 尝试强制转换不匹配的值类型
             })
         }
     }
diff --git a/shared/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.kt b/shared/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.kt
new file mode 100644
index 0000000..002ee74
--- /dev/null
+++ b/shared/src/commonMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.kt
@@ -0,0 +1,12 @@
+package com.grtsinry43.activityanalyzer
+
+/**
+ * @author grtsinry43
+ * @date 2025/4/14 16:13
+ * @description 热爱可抵岁月漫长
+ */
+interface ScreenTime {
+    val screenTime: Long
+}
+
+expect fun getScreenTime(): ScreenTime
\ No newline at end of file
diff --git a/shared/src/jvmMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.kt b/shared/src/jvmMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.kt
new file mode 100644
index 0000000..5f6fa14
--- /dev/null
+++ b/shared/src/jvmMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.kt
@@ -0,0 +1,38 @@
+package com.grtsinry43.activityanalyzer
+
+import java.io.BufferedReader
+import java.io.InputStreamReader
+
+/**
+ * @author grtsinry43
+ * @date 2025/4/14 16:30
+ * @description 热爱可抵岁月漫长
+ */
+class LinuxScreenTime : ScreenTime {
+    override val screenTime: Long
+        get() {
+            try {
+                println("===")
+                // Execute qdbus command to query active window information
+                val process = Runtime.getRuntime().exec("qdbus org.kde.KWin /KWin queryWindowInfo")
+                val reader = BufferedReader(InputStreamReader(process.inputStream))
+                val output = reader.readLines()
+                reader.close()
+
+                // Parse the output to find the caption (window title)
+                val captionLine = output.find { it.trim().startsWith("caption:") }
+                val windowTitle = captionLine?.substringAfter("caption:")?.trim()
+
+                if (windowTitle != null) {
+                    println("Active Window Title: $windowTitle")
+                    return 3600 // Example: Return dummy screen time
+                }
+            } catch (e: Exception) {
+                e.printStackTrace()
+            }
+            println("Failed to get active window title.")
+            return 0
+        }
+}
+
+actual fun getScreenTime(): ScreenTime = LinuxScreenTime()
\ No newline at end of file
diff --git a/shared/src/nativeMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.native.kt b/shared/src/nativeMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.native.kt
new file mode 100644
index 0000000..7b1892e
--- /dev/null
+++ b/shared/src/nativeMain/kotlin/com/grtsinry43/activityanalyzer/ScreenTime.native.kt
@@ -0,0 +1,5 @@
+package com.grtsinry43.activityanalyzer
+
+actual fun getScreenTime(): ScreenTime {
+    TODO("Not yet implemented")
+}
\ No newline at end of file