diff --git a/app/src/main/java/com/nova/brain/glass/ui/InspectionActivity.kt b/app/src/main/java/com/nova/brain/glass/ui/InspectionActivity.kt
index b99fb1f..82b821c 100644
--- a/app/src/main/java/com/nova/brain/glass/ui/InspectionActivity.kt
+++ b/app/src/main/java/com/nova/brain/glass/ui/InspectionActivity.kt
@@ -294,7 +294,7 @@ class InspectionActivity :
             Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
             fileName
         )
-        GlassMediaServiceHelper.takePhoto(PhotoResolution.RESOLUTION_1080P, file.absolutePath)
+        GlassMediaServiceHelper.takePhoto(PhotoResolution.RESOLUTION_720P, file.absolutePath)
     }
 
     private val photoCallbackId = UUID.randomUUID().toString()
diff --git a/app/src/main/java/com/nova/brain/glass/ui/InspectionResultActivity.kt b/app/src/main/java/com/nova/brain/glass/ui/InspectionResultActivity.kt
index 5e4e6a5..992f3a2 100644
--- a/app/src/main/java/com/nova/brain/glass/ui/InspectionResultActivity.kt
+++ b/app/src/main/java/com/nova/brain/glass/ui/InspectionResultActivity.kt
@@ -172,7 +172,7 @@ class InspectionResultActivity :
             Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
             fileName
         )
-        GlassMediaServiceHelper.takePhoto(PhotoResolution.RESOLUTION_1080P, file.absolutePath)
+        GlassMediaServiceHelper.takePhoto(PhotoResolution.RESOLUTION_720P, file.absolutePath)
     }
 
     private val photoCallbackId = UUID.randomUUID().toString()
diff --git a/app/src/main/java/com/nova/brain/glass/ui/SprayingActivity.kt b/app/src/main/java/com/nova/brain/glass/ui/SprayingActivity.kt
index 45b2aee..d9b6c1d 100644
--- a/app/src/main/java/com/nova/brain/glass/ui/SprayingActivity.kt
+++ b/app/src/main/java/com/nova/brain/glass/ui/SprayingActivity.kt
@@ -35,7 +35,7 @@ class SprayingActivity :
     }
     private var productionInfoId: String = ""
 
-    private val listener = object : OfflineCmdListener {
+    private val listener: OfflineCmdListener = object : OfflineCmdListener {
         override fun onOfflineCmd(cmd: String) {
             runOnUiThread {
                 when (cmd) {
@@ -44,12 +44,7 @@ class SprayingActivity :
                     }
 
                     "开始", "拍照", "开始拍照", "开始任务" -> {
-                        runOnUiThread {
-                            binding.hint.text = "拍照中，请稍后..."
-                        }
-                        SprayingPhotoManager.clear()
-                        isPhoto = true
-                        takePhoto()
+                        startCapture(resetSession = true)
                     }
                 }
             }
@@ -62,12 +57,12 @@ class SprayingActivity :
         val publicPicturesDir =
             Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
         val file = File(publicPicturesDir, fileName)
-        GlassMediaServiceHelper.takePhoto(PhotoResolution.RESOLUTION_1080P, file.absolutePath)
+        GlassMediaServiceHelper.takePhoto(PhotoResolution.RESOLUTION_720P, file.absolutePath)
     }
 
     private val photoCallbackId = UUID.randomUUID().toString()
 
-    private val mPhotoFileCallback = object : PhotoFileCallback.Stub() {
+    private val mPhotoFileCallback: PhotoFileCallback = object : PhotoFileCallback.Stub() {
         override fun onTakePhoto(path: String) {
             LogHelper.d("onTakePhoto-->path = $path")
         }
@@ -83,13 +78,22 @@ class SprayingActivity :
                     isPhoto = false
                     takePhoto()
                 } else {
+                    isCaptureInFlight = false
                     runOnUiThread {
                         binding.hint.text = "单击或语音输入“开始”，进入下一步"
                     }
                     "相机异常".showMessage()
                 }
             } else {
+                if (hasNavigatedNextPage) {
+                    return
+                }
+                hasNavigatedNextPage = true
+                isCaptureInFlight = false
                 SprayingPhotoManager.addPhoto(path)
+                GlassMediaServiceHelper.removePhotoCallback(mPhotoFileCallback)
+                OfflineCmdServiceHelper.removeListenerSpraying()
+                OfflineCmdServiceHelper.removeOnLineListener(listener)
                 startActivity(Intent(this@SprayingActivity, SprayingOCRActivity::class.java).apply {
                     putExtra("path", path)
                     putExtra("taskId", taskId)
@@ -123,6 +127,8 @@ class SprayingActivity :
 
     override fun onResume() {
         super.onResume()
+        hasNavigatedNextPage = false
+        isCaptureInFlight = false
         GlassMediaServiceHelper.addPhotoCallback(mPhotoFileCallback)
         OfflineCmdServiceHelper.addOnLineListener(listener)
         OfflineCmdServiceHelper.addListenerSpraying()
@@ -136,23 +142,37 @@ class SprayingActivity :
     }
 
     override fun onDestroy() {
+        isCaptureInFlight = false
+        hasNavigatedNextPage = false
         super.onDestroy()
         window.clearFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
     }
 
     private var isPhoto = false
-    private val adapter = object : CommonPagedAdapter<ItemItem>(R.layout.item_photo) {
+    private var isCaptureInFlight = false
+    private var hasNavigatedNextPage = false
+
+    private fun startCapture(resetSession: Boolean) {
+        if (isCaptureInFlight || hasNavigatedNextPage) {
+            return
+        }
+        if (resetSession) {
+            SprayingPhotoManager.clear()
+        }
+        binding.hint.text = "拍照中，请稍后..."
+        isPhoto = true
+        isCaptureInFlight = true
+        takePhoto()
+    }
+
+    private val adapter: BasePagedAdapter<ItemItem> =
+        object : CommonPagedAdapter<ItemItem>(R.layout.item_photo) {
         override fun convert(holder: ViewHolder, item: ItemItem, position: Int) {
             holder
                 .setClickListener(R.id.photo) {
                     when (item.text) {
                         "开始任务" -> {
-                            runOnUiThread {
-                                binding.hint.text = "拍照中，请稍后..."
-                            }
-                            SprayingPhotoManager.clear()
-                            isPhoto = true
-                            takePhoto()
+                            startCapture(resetSession = true)
                         }
                     }
                 }
diff --git a/app/src/main/java/com/nova/brain/glass/ui/SprayingOCRActivity.kt b/app/src/main/java/com/nova/brain/glass/ui/SprayingOCRActivity.kt
index 39a30a6..5867a33 100644
--- a/app/src/main/java/com/nova/brain/glass/ui/SprayingOCRActivity.kt
+++ b/app/src/main/java/com/nova/brain/glass/ui/SprayingOCRActivity.kt
@@ -61,7 +61,7 @@ class SprayingOCRActivity :
         val fileName = "test_${System.currentTimeMillis()}.png"
         val publicPicturesDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
         val file = File(publicPicturesDir, fileName)
-        GlassMediaServiceHelper.takePhoto(PhotoResolution.RESOLUTION_1080P, file.absolutePath)
+        GlassMediaServiceHelper.takePhoto(PhotoResolution.RESOLUTION_720P, file.absolutePath)
     }
     private val photoCallbackId = UUID.randomUUID().toString()
     private val imageDecodeExecutor = Executors.newSingleThreadExecutor()
diff --git a/app/src/main/java/com/nova/brain/glass/ui/SprayingResultActivity.kt b/app/src/main/java/com/nova/brain/glass/ui/SprayingResultActivity.kt
index 20e4ee1..79bab9f 100644
--- a/app/src/main/java/com/nova/brain/glass/ui/SprayingResultActivity.kt
+++ b/app/src/main/java/com/nova/brain/glass/ui/SprayingResultActivity.kt
@@ -121,7 +121,7 @@ class SprayingResultActivity :
         val fileName = "test_${System.currentTimeMillis()}.png"
         val publicPicturesDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES)
         val file = File(publicPicturesDir, fileName)
-        GlassMediaServiceHelper.takePhoto(PhotoResolution.RESOLUTION_1080P, file.absolutePath)
+        GlassMediaServiceHelper.takePhoto(PhotoResolution.RESOLUTION_720P, file.absolutePath)
     }
 
     fun rest() {