diff --git a/app/src/main/java/com/casic/detector/view/MainActivity.kt b/app/src/main/java/com/casic/detector/view/MainActivity.kt
index 3d12803..2bd8caa 100644
--- a/app/src/main/java/com/casic/detector/view/MainActivity.kt
+++ b/app/src/main/java/com/casic/detector/view/MainActivity.kt
@@ -1179,7 +1179,7 @@
         }
 
         private fun takePicture() {
-            PictureSelector.create(context).openCamera(SelectMimeType.ofImage())
+            PictureSelector.create(this@MainActivity).openCamera(SelectMimeType.ofImage())
                 .forResult(object : OnResultCallbackListener<LocalMedia> {
                     override fun onResult(result: java.util.ArrayList<LocalMedia>?) {
                         if (result == null) {