Add location manager helper and Google Play Services dependency

app/build.gradle

@@ -51,6 +51,9 @@ dependencies {
     // CameraX Extensions (Effects) - Optional
     implementation "androidx.camera:camera-extensions:${camerax_version}"
     
+    // Google Play Services for location
+    implementation 'com.google.android.gms:play-services-location:21.0.1'
+    
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'

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

@@ -394,11 +394,17 @@ class CameraActivity : AppCompatActivity() {
         }
     }
 
+    private var locationManagerHelper: LocationManagerHelper? = null
+    
     @SuppressLint("MissingPermission")
     private fun getCurrentLocation(): Location? {
-        // 这里应该实现获取当前位置的逻辑
+        // 使用LocationManagerHelper获取位置
-        // 简化实现，返回null，实际应用中需要使用LocationManager或FusedLocationProviderClient
+        var location: Location? = null
-        return null
+        locationManagerHelper = LocationManagerHelper(this)
+        locationManagerHelper?.getLastKnownLocation { loc ->
+            location = loc
+        }
+        return location
     }
 
     private fun openSettings() {

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

@@ -0,0 +1,90 @@
+package com.example.app
+
+import android.Manifest
+import android.content.Context
+import android.content.pm.PackageManager
+import android.location.Location
+import android.location.LocationManager
+import android.os.Looper
+import androidx.core.app.ActivityCompat
+import com.google.android.gms.location.*
+import java.util.concurrent.TimeUnit
+
+/**
+ * 位置服务管理器
+ * 处理位置获取、地理编码等功能
+ */
+class LocationManagerHelper(private val context: Context) {
+    
+    private var fusedLocationClient: FusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(context)
+    private var locationCallback: LocationCallback? = null
+    
+    /**
+     * 获取最后一次已知位置
+     */
+    fun getLastKnownLocation(onResult: (Location?) -> Unit) {
+        if (!hasLocationPermissions()) {
+            onResult(null)
+            return
+        }
+        
+        fusedLocationClient.lastLocation
+            .addOnSuccessListener { location ->
+                onResult(location)
+            }
+            .addOnFailureListener { 
+                onResult(null)
+            }
+    }
+    
+    /**
+     * 实时获取位置
+     */
+    fun requestLocationUpdates(callback: (Location?) -> Unit) {
+        if (!hasLocationPermissions()) {
+            callback(null)
+            return
+        }
+        
+        val locationRequest = LocationRequest.create().apply {
+            interval = TimeUnit.SECONDS.toMillis(10) // 每10秒更新一次
+            fastestInterval = TimeUnit.SECONDS.toMillis(5) // 最快5秒更新一次
+            priority = LocationRequest.PRIORITY_HIGH_ACCURACY
+        }
+        
+        locationCallback = object : LocationCallback() {
+            override fun onLocationResult(locationResult: LocationResult) {
+                val location = locationResult.lastLocation
+                callback(location)
+            }
+        }
+        
+        fusedLocationClient.requestLocationUpdates(locationRequest, locationCallback!!, Looper.getMainLooper())
+    }
+    
+    /**
+     * 停止位置更新
+     */
+    fun stopLocationUpdates() {
+        locationCallback?.let {
+            fusedLocationClient.removeLocationUpdates(it)
+        }
+    }
+    
+    /**
+     * 检查位置权限
+     */
+    private fun hasLocationPermissions(): Boolean {
+        return (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED ||
+                ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED)
+    }
+    
+    /**
+     * 检查GPS是否开启
+     */
+    fun isGPSEnabled(): Boolean {
+        val locationManager = context.getSystemService(Context.LOCATION_SERVICE) as LocationManager
+        return locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) ||
+               locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)
+    }
+}