Improve location management in CameraActivity

app/src/main/java/com/example/app/CameraActivity.kt

@@ -395,16 +395,60 @@ class CameraActivity : AppCompatActivity() {
     }
 
     private var locationManagerHelper: LocationManagerHelper? = null
+    private var currentLocation: Location? = null
+    
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        // 初始化视图
+        viewFinder = findViewById(R.id.viewFinder)
+        captureButton = findViewById(R.id.captureButton)
+        settingsButton = findViewById(R.id.settingsButton)
+        photoPreviewLayout = findViewById(R.id.photoPreviewLayout)
+
+        // 请求权限
+        if (allPermissionsGranted()) {
+            startCamera()
+            // 初始化位置管理器
+            initLocationManager()
+        } else {
+            ActivityCompat.requestPermissions(
+                this, REQUIRED_PERMISSIONS, REQUEST_CODE_PERMISSIONS
+            )
+        }
+
+        // 设置点击监听器
+        captureButton.setOnClickListener { takePhoto() }
+        settingsButton.setOnClickListener { openSettings() }
+
+        // 初始化线程池
+        cameraExecutor = Executors.newSingleThreadExecutor()
+    }
+    
+    private fun initLocationManager() {
+        locationManagerHelper = LocationManagerHelper(this)
+        // 尝试获取最后已知位置
+        locationManagerHelper?.getLastKnownLocation { location ->
+            this.currentLocation = location
+        }
+        
+        // 开始实时位置更新
+        locationManagerHelper?.requestLocationUpdates { location ->
+            this.currentLocation = location
+        }
+    }
     
     @SuppressLint("MissingPermission")
     private fun getCurrentLocation(): Location? {
-        // 使用LocationManagerHelper获取位置
-        var location: Location? = null
-        locationManagerHelper = LocationManagerHelper(this)
-        locationManagerHelper?.getLastKnownLocation { loc ->
-            location = loc
-        }
-        return location
+        return currentLocation
+    }
+    
+    override fun onDestroy() {
+        super.onDestroy()
+        // 停止位置更新
+        locationManagerHelper?.stopLocationUpdates()
+        cameraExecutor.shutdown()
     }
 
     private fun openSettings() {