Fix an occasional crash in Picture-in-Picture restoration on individual Android models

Flutter/android/src/main/java/com/tencent/vod/flutter/ui/FlutterPipImplActivity.java

@@ -648,12 +648,14 @@ public class FlutterPipImplActivity extends Activity implements TextureView.Surf
     }
 
     private void sendPlayerEvent(int eventCode, Bundle data) {
+        if (null != mCurrentParams) {
             Bundle params = new Bundle();
             params.putInt(FTXEvent.EXTRA_NAME_PLAYER_ID, mCurrentParams.getCurrentPlayerId());
             params.putInt(FTXEvent.EXTRA_NAME_PIP_PLAYER_EVENT_ID, eventCode);
             params.putBundle(FTXEvent.EXTRA_NAME_PIP_PLAYER_EVENT_PARAMS, data);
             TXSimpleEventBus.getInstance().post(FTXEvent.EVENT_PIP_PLAYER_EVENT_ACTION, params);
         }
+    }
 
     @Override
     public void onNetStatus(TXVodPlayer txVodPlayer, Bundle bundle) {