diff --git a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainActivity.kt b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainActivity.kt
index 282023a..78e053d 100644
--- a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainActivity.kt
+++ b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainActivity.kt
@@ -53,9 +53,7 @@ class MainActivity : AppCompatActivity() {
     }
 
     override fun onDestroy() {
-        for (i in 0 until splitVideoViewAdapter.itemCount) {
-            splitVideoViewAdapter.destroy(i)
-        }
+        splitVideoViewAdapter.destroy()
         super.onDestroy()
     }
 
@@ -113,8 +111,8 @@ class MainActivity : AppCompatActivity() {
     private fun reloadVideoViews(list: List<List<Device>>?) = MainScope().launch {
         binding.viewPager.setCurrentItem(0, false)
         for (i in 0 until splitVideoViewAdapter.itemCount) {
-            splitVideoViewAdapter.pause(i)
-            splitVideoViewAdapter.destroy(i)
+            splitVideoViewAdapter.pause()
+            splitVideoViewAdapter.destroy()
         }
         //delay(oldSplitMode * Constants.CONF_DELAY_BASE_MILLIS)
         delay((oldSplitMode * 100) + Constants.CONF_DELAY_BASE_MILLIS)
diff --git a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/SplitViewFragment.kt b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/SplitViewFragment.kt
index 03ea162..ac741b5 100644
--- a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/SplitViewFragment.kt
+++ b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/SplitViewFragment.kt
@@ -162,6 +162,7 @@ class SplitViewFragment : Fragment() {
                             }
                             MainScope().launch {
                                 stopAll()
+                                //delay(Constants.CONF_DELAY_BASE_MILLIS)
                                 delay(splitMode * Constants.CONF_DELAY_BASE_MILLIS)
                                 //delay((splitMode * 100) + Constants.CONF_DELAY_BASE_MILLIS)
                                 val item = data[position]
@@ -211,13 +212,13 @@ class SplitViewFragment : Fragment() {
         }
     }.start()
 
-    fun destroyAll() /*= MainScope().launch(Dispatchers.Main)*/ {
-        if (videoViews.isEmpty()) return
+    fun destroyAll() = MainScope().launch(Dispatchers.Main) {
+        if (videoViews.isEmpty()) return@launch
         for (index in data.indices) {
             //videoViews[index].destroy()
             videoViews[index].destroySurface()
         }
-    }//.start()
+    }.start()
 
     companion object {
         private val TAG = SplitViewFragment::class.java.simpleName
diff --git a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoViewAdapter.kt b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoViewAdapter.kt
index 0ec3db4..37e4f03 100644
--- a/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoViewAdapter.kt
+++ b/app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoViewAdapter.kt
@@ -41,6 +41,12 @@ class VideoViewAdapter(
         notifyDataSetChanged()
     }
 
+    fun pause() {
+        for (i in fragments.indices) {
+            pause(i)
+        }
+    }
+
     fun pause(index: Int) {
         pause(fragments[index])
     }
@@ -57,6 +63,12 @@ class VideoViewAdapter(
         fragment.playAll()
     }
 
+    fun destroy() {
+        for (i in fragments.indices) {
+            destroy(i)
+        }
+    }
+
     fun destroy(index: Int) {
         destroy(fragments[index])
     }