feat: 集成 Jetpack Compose UI 并重构配置界面

- 添加 Jetpack Compose 依赖和编译器插件
- 重构 MainActivity 为 Compose UI 实现
- 新增配置界面，支持服务器地址输入和保存
- 添加开始/停止推流控制按钮
- 改进 WebRTC 客户端生命周期管理

app/build.gradle

@@ -1,5 +1,6 @@
 plugins {
     alias(libs.plugins.android.application)
+    alias(libs.plugins.compose.compiler)
 }
 
 android {
@@ -26,9 +27,21 @@ android {
         sourceCompatibility JavaVersion.VERSION_11
         targetCompatibility JavaVersion.VERSION_11
     }
+    buildFeatures {
+        compose true
+    }
 }
 
 dependencies {
+    implementation libs.androidx.core.ktx
+    implementation libs.androidx.lifecycle.runtime.ktx
+    implementation libs.androidx.activity.compose
+    implementation platform(libs.androidx.compose.bom)
+    implementation libs.androidx.compose.ui
+    implementation libs.androidx.compose.ui.graphics
+    implementation libs.androidx.compose.ui.tooling.preview
+    implementation libs.androidx.compose.material3
+
     implementation libs.appcompat
     implementation libs.material
     testImplementation libs.junit

app/src/main/java/com/kimgo/posefit/MainActivity.kt

@@ -1,41 +1,116 @@
 package com.kimgo.posefit
 
 import android.Manifest
+import android.content.Context
 import android.os.Bundle
 import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
 import com.kimgo.posefit.sender.WebRtcSenderClient
 
 class MainActivity : ComponentActivity() {
 
-    private lateinit var webRtcClient: WebRtcSenderClient
+    private var webRtcClient: WebRtcSenderClient? = null
 
     private val requestPermission =
         registerForActivityResult(ActivityResultContracts.RequestPermission()) { granted ->
             if (granted) {
-                startWebRtc()
+                val url = getSavedSignalingUrl()
+                startWebRtc(url)
             }
         }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
-        requestPermission.launch(Manifest.permission.CAMERA)
+        setContent {
+            MaterialTheme {
+                Surface(
+                    modifier = Modifier.fillMaxSize(),
+                    color = MaterialTheme.colorScheme.background
+                ) {
+                    ConfigScreen()
+                }
+            }
+        }
     }
 
-    private fun startWebRtc() {
+    @Composable
+    fun ConfigScreen() {
+        var url by remember { mutableStateOf(getSavedSignalingUrl()) }
+        var isStreaming by remember { mutableStateOf(false) }
+
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(24.dp),
+            verticalArrangement = Arrangement.Center,
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            Text(
+                text = "PoseFit 配置",
+                style = MaterialTheme.typography.headlineMedium,
+                color = MaterialTheme.colorScheme.primary
+            )
+            Spacer(modifier = Modifier.height(32.dp))
+            TextField(
+                value = url,
+                onValueChange = { url = it },
+                label = { Text("服务器地址 (ws://...)") },
+                modifier = Modifier.fillMaxWidth(),
+                enabled = !isStreaming
+            )
+            Spacer(modifier = Modifier.height(16.dp))
+            Button(
+                onClick = {
+                    if (isStreaming) {
+                        stopWebRtc()
+                        isStreaming = false
+                    } else {
+                        saveSignalingUrl(url)
+                        requestPermission.launch(Manifest.permission.CAMERA)
+                        isStreaming = true
+                    }
+                },
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                Text(if (isStreaming) "停止推流" else "开始推流")
+            }
+        }
+    }
+
+    private fun getSavedSignalingUrl(): String {
+        val prefs = getSharedPreferences("posefit_prefs", Context.MODE_PRIVATE)
+        return prefs.getString("signaling_url", "ws://192.168.110.240:8080") ?: "ws://192.168.110.240:8080"
+    }
+
+    private fun saveSignalingUrl(url: String) {
+        val prefs = getSharedPreferences("posefit_prefs", Context.MODE_PRIVATE)
+        prefs.edit().putString("signaling_url", url).apply()
+    }
+
+    private fun startWebRtc(url: String) {
+        webRtcClient?.release()
         webRtcClient = WebRtcSenderClient(
             context = this,
-            signalingUrl = "ws://192.168.110.240:8080"
+            signalingUrl = url
         )
+        webRtcClient?.start()
+    }
 
-        webRtcClient.start()
+    private fun stopWebRtc() {
+        webRtcClient?.release()
+        webRtcClient = null
     }
 
     override fun onDestroy() {
         super.onDestroy()
-        if (::webRtcClient.isInitialized) {
-            webRtcClient.release()
-        }
+        stopWebRtc()
     }
-}
+}

gradle/libs.versions.toml

@@ -1,5 +1,11 @@
 [versions]
 agp = "9.2.1"
+kotlin = "2.0.0"
+composeBom = "2024.02.00"
+composeCompiler = "1.5.8"
+activityCompose = "1.8.2"
+coreKtx = "1.12.0"
+lifecycleRuntimeKtx = "2.7.0"
 junit = "4.13.2"
 junitVersion = "1.1.5"
 espressoCore = "3.5.1"
@@ -12,7 +18,18 @@ ext-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitV
 espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
 appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
 material = { group = "com.google.android.material", name = "material", version.ref = "material" }
+androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
+androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" }
+androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activityCompose" }
+androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" }
+androidx-compose-ui = { group = "androidx.compose.ui", name = "ui" }
+androidx-compose-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
+androidx-compose-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
+androidx-compose-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
+androidx-compose-material3 = { group = "androidx.compose.material3", name = "material3" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }
+jetbrains-kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
+compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }