當MainActivity退出時，呼叫GStreamer的finalize

app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/MainActivity.kt

@@ -47,6 +47,16 @@ class MainActivity : AppCompatActivity() {
         initObservers()
     }
 
+    override fun onDestroy() {
+        super.onDestroy()
+        MainScope().launch {
+            for (i in 0 until splitVideoViewAdapter.itemCount) {
+                splitVideoViewAdapter.destroy(i)
+                //delay(100)
+            }
+        }
+    }
+
     private fun initContentView() = binding.apply {
         //region Content area
         splitVideoViewAdapter = VideoViewAdapter(supportFragmentManager, lifecycle)

app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/SplitViewFragment.kt

@@ -84,6 +84,12 @@ class SplitViewFragment : Fragment() {
         Log.d("${TAG}_$mPageNum", "onResume()")
     }
 
+    /*override fun onDestroy() {
+        super.onDestroy()
+        destroyAll()
+        Log.d("${TAG}_$mPageNum", "onDestroy()")
+    }*/
+
     private fun initView() {
         // 生成 VideoView 分割畫面
         binding.apply {
@@ -203,6 +209,14 @@ class SplitViewFragment : Fragment() {
         }
     }.start()
 
+    fun destroyAll() = MainScope().launch(Dispatchers.Main) {
+        if (videoViews.isEmpty()) return@launch
+        for (index in data.indices) {
+            videoViews[index].destroy()
+            delay(100)
+        }
+    }.start()
+
     companion object {
         private val TAG = SplitViewFragment::class.java.simpleName
         private const val ARG_PAGE_NUM = "page_number"

app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoView.kt

@@ -111,6 +111,12 @@ class VideoView : ConstraintLayout, SurfaceHolder.Callback, GstCallback {
         }
     }
 
+    fun destroy() {
+        if (this::gstLibrary.isInitialized) {
+            gstLibrary.close()
+        }
+    }
+
     fun resetRetryCount() {
         retryCount = 0
     }

app/src/main/java/com/ray650128/gstreamer_demo_app/ui/mainScreen/VideoViewAdapter.kt

@@ -57,6 +57,14 @@ class VideoViewAdapter(
         fragment.playAll()
     }
 
+    fun destroy(index: Int) {
+        destroy(fragments[index])
+    }
+
+    private fun destroy(fragment: SplitViewFragment) {
+        fragment.destroyAll()
+    }
+
     override fun getItemId(position: Int): Long {
         return fragments[position].hashCode().toLong()
     }