添加前台播放服务以支持直播播放，更新相关权限和通知逻辑

example/src/main/AndroidManifest.xml

@@ -12,6 +12,7 @@
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_CAMERA"/>
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MICROPHONE"/>
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PROJECTION"/>
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK"/>
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="28" />
     <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
@@ -75,6 +76,11 @@
             android:exported="false"
             android:foregroundServiceType="camera|microphone|mediaProjection" />
 
+        <service
+            android:name=".live.LivePlayForegroundService"
+            android:exported="false"
+            android:foregroundServiceType="mediaPlayback" />
+
     </application>
 
 </manifest>

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

@@ -244,6 +244,7 @@ class LivePlayActivity : AppCompatActivity() {
         if (isPlaying) {
             logEvent("用户操作: 暂停")
             playerClient.pause()
+            stopPlaybackForegroundService()
             return
         }
         logEvent("用户操作: 播放")
@@ -272,6 +273,7 @@ class LivePlayActivity : AppCompatActivity() {
         if (hasReleasedPlayer) return
         hasReleasedPlayer = true
         playerClient.release()
+        stopPlaybackForegroundService()
     }
 
     private fun finishForNewPlayback() {
@@ -343,12 +345,21 @@ class LivePlayActivity : AppCompatActivity() {
     }
 
     private fun beginPlayback() {
+        startPlaybackForegroundService()
         startPlayAttempt()
         resetPreviewForPlayback()
         playerClient.prepareToPlay()
         playerClient.play()
     }
 
+    private fun startPlaybackForegroundService() {
+        LivePlayForegroundService.start(this)
+    }
+
+    private fun stopPlaybackForegroundService() {
+        LivePlayForegroundService.stop(this)
+    }
+
     private fun setPlayingUi(playing: Boolean) {
         isPlaying = playing
         binding.tvPlayLabel.setText(if (playing) R.string.play_ctrl_pause else R.string.play_ctrl_play)

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

@@ -0,0 +1,85 @@
+package com.demo.SellyCloudSDK.live
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+import androidx.core.app.NotificationCompat
+import androidx.core.app.ServiceCompat
+import androidx.core.content.ContextCompat
+import com.demo.SellyCloudSDK.R
+
+/**
+ * 前台播放服务：用于在后台持续拉流并避免系统回收。
+ * 仅负责展示常驻通知，不绑定播放业务。
+ */
+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())
+        }
+        return START_STICKY
+    }
+
+    override fun onBind(intent: Intent?) = null
+
+    override fun onDestroy() {
+        try {
+            stopForeground(STOP_FOREGROUND_REMOVE)
+        } catch (_: Exception) {
+        }
+        super.onDestroy()
+    }
+
+    private fun buildNotification(): Notification {
+        ensureChannel()
+        return NotificationCompat.Builder(this, CHANNEL_ID)
+            .setContentTitle(getString(R.string.live_play_foreground_title))
+            .setContentText(getString(R.string.live_play_foreground_text))
+            .setSmallIcon(android.R.drawable.ic_media_play)
+            .setOngoing(true)
+            .setOnlyAlertOnce(true)
+            .build()
+    }
+
+    private fun ensureChannel() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val manager = getSystemService(NotificationManager::class.java) ?: return
+            val existing = manager.getNotificationChannel(CHANNEL_ID)
+            if (existing == null) {
+                val channel = NotificationChannel(
+                    CHANNEL_ID,
+                    "Live Playback",
+                    NotificationManager.IMPORTANCE_LOW
+                )
+                manager.createNotificationChannel(channel)
+            }
+        }
+    }
+
+    companion object {
+        private const val CHANNEL_ID = "live_play_foreground"
+        private const val NOTIFICATION_ID = 0x201
+
+        fun start(context: Context) {
+            val intent = Intent(context, LivePlayForegroundService::class.java)
+            ContextCompat.startForegroundService(context, intent)
+        }
+
+        fun stop(context: Context) {
+            val intent = Intent(context, LivePlayForegroundService::class.java)
+            context.stopService(intent)
+        }
+    }
+}

example/src/main/res/values/strings.xml

@@ -97,6 +97,8 @@
     <string name="play_ctrl_unmute">取消静音</string>
     <string name="play_ctrl_screenshot">截图</string>
     <string name="play_ctrl_pip">画中画</string>
+    <string name="live_play_foreground_title">正在播放</string>
+    <string name="live_play_foreground_text">直播播放保持中</string>
 
     <string name="live_stats_title">直播数据</string>