From 9cd1d087c38dfa41d4606b53a40496871ae4e875 Mon Sep 17 00:00:00 2001
From: Alexander Alekhin <alexander.a.alekhin@gmail.com>
Date: Thu, 19 Dec 2019 00:29:53 +0000
Subject: [PATCH] android(camera2): apply .disconnectCamera() patch from issue
 13574

---
 .../java/org/opencv/android/JavaCamera2View.java           | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/modules/java/generator/android-21/java/org/opencv/android/JavaCamera2View.java b/modules/java/generator/android-21/java/org/opencv/android/JavaCamera2View.java
index 09e01b01fc..5eac339c12 100644
--- a/modules/java/generator/android-21/java/org/opencv/android/JavaCamera2View.java
+++ b/modules/java/generator/android-21/java/org/opencv/android/JavaCamera2View.java
@@ -230,7 +230,7 @@ public class JavaCamera2View extends CameraBridgeViewBase {
 
     @Override
     protected void disconnectCamera() {
-        Log.i(LOGTAG, "closeCamera");
+        Log.i(LOGTAG, "close camera");
         try {
             CameraDevice c = mCameraDevice;
             mCameraDevice = null;
@@ -241,13 +241,14 @@ public class JavaCamera2View extends CameraBridgeViewBase {
             if (null != c) {
                 c.close();
             }
+        } finally {
+            stopBackgroundThread();
             if (null != mImageReader) {
                 mImageReader.close();
                 mImageReader = null;
             }
-        } finally {
-            stopBackgroundThread();
         }
+        Log.i(LOGTAG, "camera closed!");
     }
 
     public static class JavaCameraSizeAccessor implements ListItemAccessor {