确保前台服务启动前的状态检查，修复潜在的播放器释放问题

example/src/main/java/com/demo/SellyCloudSDK/live/LivePlayActivity.kt

@@ -346,11 +346,14 @@ class LivePlayActivity : AppCompatActivity() {
 
     private fun beginPlayback() {
         startPlaybackForegroundService()
+        binding.root.post {
+            if (hasReleasedPlayer || isDestroyed) return@post
             startPlayAttempt()
             resetPreviewForPlayback()
             playerClient.prepareToPlay()
             playerClient.play()
         }
+    }
 
     private fun startPlaybackForegroundService() {
         LivePlayForegroundService.start(this)

example/src/main/java/com/demo/SellyCloudSDK/live/LivePlayForegroundService.kt

@@ -18,17 +18,15 @@ import com.demo.SellyCloudSDK.R
  */
 class LivePlayForegroundService : Service() {
 
-    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
-            ServiceCompat.startForeground(
-                this,
-                NOTIFICATION_ID,
-                buildNotification(),
-                android.content.pm.ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PLAYBACK
-            )
-        } else {
-            startForeground(NOTIFICATION_ID, buildNotification())
+    private var hasStartedForeground = false
+
+    override fun onCreate() {
+        super.onCreate()
+        startForegroundIfNeeded()
     }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        startForegroundIfNeeded()
         return START_STICKY
     }
 
@@ -53,6 +51,21 @@ class LivePlayForegroundService : Service() {
             .build()
     }
 
+    private fun startForegroundIfNeeded() {
+        if (hasStartedForeground) return
+        hasStartedForeground = true
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            ServiceCompat.startForeground(
+                this,
+                NOTIFICATION_ID,
+                buildNotification(),
+                android.content.pm.ServiceInfo.FOREGROUND_SERVICE_TYPE_MEDIA_PLAYBACK
+            )
+        } else {
+            startForeground(NOTIFICATION_ID, buildNotification())
+        }
+    }
+
     private fun ensureChannel() {
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
             val manager = getSystemService(NotificationManager::class.java) ?: return
@@ -73,13 +86,23 @@ class LivePlayForegroundService : Service() {
         private const val NOTIFICATION_ID = 0x201
 
         fun start(context: Context) {
-            val intent = Intent(context, LivePlayForegroundService::class.java)
-            ContextCompat.startForegroundService(context, intent)
+            val appContext = context.applicationContext
+            val intent = Intent(appContext, LivePlayForegroundService::class.java)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                try {
+                    appContext.startService(intent)
+                } catch (_: IllegalStateException) {
+                    ContextCompat.startForegroundService(appContext, intent)
+                }
+            } else {
+                appContext.startService(intent)
+            }
         }
 
         fun stop(context: Context) {
-            val intent = Intent(context, LivePlayForegroundService::class.java)
-            context.stopService(intent)
+            val appContext = context.applicationContext
+            val intent = Intent(appContext, LivePlayForegroundService::class.java)
+            appContext.stopService(intent)
         }
     }
 }