2026年Android开发趋势全景

// AI生成的生物识别登录代码示例
class BiometricLoginActivity : ComponentActivity() {
    private lateinit var biometricManager: BiometricManager
    
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MyAppTheme {
                Surface {
                    LoginScreen(
                        onBiometricAuth = { authenticateWithBiometrics() }
                    )
                }
            }
        }
    }
    
    private fun authenticateWithBiometrics() {
        // AI自动集成的生物识别验证逻辑
        val promptInfo = BiometricPrompt.PromptInfo.Builder()
            .setTitle("生物识别登录")
            .setSubtitle("使用指纹或面部识别验证身份")
            .setNegativeButtonText("取消")
            .build()
        
        // 更多实现细节...
    }
}

// AR医疗教育应用示例
class ARAnatomyActivity : AppCompatActivity() {
    private lateinit var arFragment: ArFragment
    private var humanModel: AnchorNode? = null
    
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_ar_anatomy)
        
        arFragment = supportFragmentManager.findFragmentById(R.id.arFragment) as ArFragment
        arFragment.setOnTapArPlaneListener { hitResult, plane, motionEvent ->
            // 放置3D解剖模型
            placeAnatomyModel(hitResult.createAnchor())
        }
    }
    
    private fun placeAnatomyModel(anchor: Anchor) {
        // 加载交互式3D器官模型
        ModelRenderable.builder()
            .setSource(this, Uri.parse("heart_model.sfb"))
            .build()
            .thenAccept { renderable ->
                humanModel = AnchorNode(anchor).apply {
                    setParent(arFragment.arSceneView.scene)
                    renderableInstance = renderable.apply {
                        // 设置模型交互逻辑
                        setOnTapListener { _, _ -> showOrganInfo() }
                    }
                }
            }
    }
}

// 个性化内容推荐引擎示例
class PersonalizationEngine(context: Context) {
    private val userBehaviorAnalyzer = UserBehaviorAnalyzer(context)
    private val localModel = PersonalizationModel.getInstance(context)
    
    fun getPersonalizedContent(userId: String, contextTags: List<String>): List<ContentItem> {
        // 实时分析用户当前情境
        val userContext = userBehaviorAnalyzer.analyzeCurrentContext()
        val historicalData = userBehaviorAnalyzer.getUserHistory(userId)
        
        // 使用设备端模型生成推荐
        return localModel.predictContent(
            userId = userId,
            context = userContext,
            history = historicalData,
            tags = contextTags
        )
    }
}

// 使用示例
val engine = PersonalizationEngine(context)
val recommendedNews = engine.getPersonalizedContent(
    userId = "user123", 
    contextTags = listOf("technology", "android")
)

// KMP共享业务逻辑示例
class SharedBusinessLogic {
    fun processData(data: List<DataPoint>): ProcessingResult {
        // 跨平台共享的核心算法
        return dataProcessor.transform(data)
    }
}

// Android端UI实现
class AndroidDataScreen : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            DataDisplayScreen(
                data = viewModel.processedData,
                onRefresh = { viewModel.refreshData() }
            )
        }
    }
}

// iOS端使用同一业务逻辑
// 通过KMP实现代码共享

// 情绪感知集成示例
class EmotionAwareApp {
    private val emotionDetector = EmotionDetector()
    private val contentAdapter = ContentAdapter()
    
    fun onUserInteraction(interactionData: InteractionData) {
        // 实时分析用户情绪状态
        val emotionState = emotionDetector.analyzeEmotion(interactionData)
        
        // 根据情绪调整界面和内容
        when (emotionState.primaryEmotion) {
            Emotion.JOY -> contentAdapter.showCelebratoryContent()
            Emotion.CALM -> contentAdapter.showRelaxingContent() 
            Emotion.STRESS -> contentAdapter.showSupportiveContent()
        }
    }
}

// 健康监测应用示例（手机与手表协同）
class HealthMonitoringApp {
    // 手机端数据聚合
    fun aggregateHealthData(fromWearable: SensorData) {
        val analyzedData = HealthAnalyzer.analyze(fromWearable)
        // 与手机本地数据合并
        val combinedData = mergeWithPhoneData(analyzedData)
        uploadToCloud(combinedData)
    }
}

// 手表端数据收集
class WearableSensorService : Service() {
    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
        // 持续收集健康数据
        sensorManager.registerListener(
            sensorListener,
            heartRateSensor,
            SAMPLING_RATE
        )
        return START_STICKY
    }
    
    private val sensorListener = object : SensorEventListener {
        override fun onSensorChanged(event: SensorEvent?) {
            // 将数据发送到手机应用
            sendToPhoneApp(event.values)
        }
    }
}

// 折叠屏适配示例
class FoldableActivity : AppCompatActivity() {
    private val windowManager = WindowManager(this)
    private lateinit var stateTracker: WindowStateTracker
    
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_foldable)
        
        // 监听窗口状态变化
        stateTracker = WindowStateTracker(windowManager).apply {
            addListener { state ->
                when (state) {
                    is WindowState.Folded -> updateLayoutForFoldedState()
                    is WindowState.Unfolded -> updateLayoutForUnfoldedState()
                    is WindowState.Separated -> updateLayoutForSeparatedState()
                }
            }
        }
    }
    
    private fun updateLayoutForFoldedState() {
        // 适配折叠状态的UI布局
        binding.contentLayout.orientation = LinearLayout.VERTICAL
        binding.secondaryPanel.visibility = View.GONE
    }
    
    private fun updateLayoutForUnfoldedState() {
        // 适配展开状态的UI布局  
        binding.contentLayout.orientation = LinearLayout.HORIZONTAL
        binding.secondaryPanel.visibility = View.VISIBLE
    }
}

// Compose单Activity架构示例
@Composable
fun AppNavigation() {
    val navController = rememberNavController()
    
    NavHost(navController, startDestination = "home") {
        composable("home") { HomeScreen(navController) }
        composable("profile") { ProfileScreen(navController) }
        composable("settings") { SettingsScreen(navController) }
    }
}

@Composable
fun HomeScreen(navController: NavController) {
    Column {
        Text("欢迎使用现代Android开发", style = MaterialTheme.typography.h5)
        Button(onClick = { navController.navigate("profile") }) {
            Text("进入个人中心")
        }
    }
}

// 在Activity中使用
class MainActivity : ComponentActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContent {
            MyAppTheme {
                AppNavigation()
            }
        }
    }
}

// 端云协同AI示例
class SmartReplyFeature(context: Context) {
    private val localModel = GeminiNanoModel(context)
    private val cloudModel = GeminiProModel(API_KEY)
    
    suspend fun generateSmartReply(message: String): ReplySuggestion {
        return try {
            // 优先尝试设备端模型（低延迟）
            localModel.generateReply(message)
        } catch (e: ModelNotAvailableException) {
            // 备选使用云端模型（高能力）
            cloudModel.generateReply(message)
        }
    }
}

// 在聊天应用中使用
class ChatActivity : ComponentActivity() {
    private val smartReply = SmartReplyFeature(this)
    
    private fun setupSmartReplies() {
        lifecycleScope.launch {
            messageInput.setOnMessageChange { text ->
                val suggestions = smartReply.generateSmartReply(text)
                showReplySuggestions(suggestions)
            }
        }
    }
}