diff --git a/app/src/main/java/com/ray650128/gstreamer_demo_app/MyApplication.kt b/app/src/main/java/com/ray650128/gstreamer_demo_app/MyApplication.kt
index e151eb6..bdce2f3 100644
--- a/app/src/main/java/com/ray650128/gstreamer_demo_app/MyApplication.kt
+++ b/app/src/main/java/com/ray650128/gstreamer_demo_app/MyApplication.kt
@@ -12,6 +12,7 @@ class MyApplication : Application(), Application.ActivityLifecycleCallbacks {
     override fun onCreate() {
         super.onCreate()
         instance = this
+        registerActivityLifecycleCallbacks(this)
     }
 
     private var currentActivity: Activity? = null
@@ -32,7 +33,7 @@ class MyApplication : Application(), Application.ActivityLifecycleCallbacks {
 
     override fun onActivityDestroyed(p0: Activity) {
         if (currentActivity?.equals(p0) == true) {
-            Log.e("APP", "EXIT...")
+            Log.e("MyApplication", "EXIT...")
             onTerminate()
             exitProcess(0)
         }
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 e08d11e..8c3091f 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
@@ -47,14 +47,16 @@ class MainActivity : AppCompatActivity() {
         initObservers()
     }
 
+    override fun onBackPressed() {
+        super.onBackPressed()
+        finish()
+    }
+
     override fun onDestroy() {
-        super.onDestroy()
-        MainScope().launch {
-            for (i in 0 until splitVideoViewAdapter.itemCount) {
-                splitVideoViewAdapter.destroy(i)
-                //delay(100)
-            }
+        for (i in 0 until splitVideoViewAdapter.itemCount) {
+            splitVideoViewAdapter.destroy(i)
         }
+        super.onDestroy()
     }
 
     private fun initContentView() = binding.apply {