人脸识别整理

app/src/main/java/com/aispeech/nativedemo/face/FaceChatGreetingQueueMode.java

@@ -640,6 +640,7 @@ public class FaceChatGreetingQueueMode implements ChatMode {
                         stranger = saveStranger(personInfo);
                     } else {
                         if (recRes.confidence >= 0.8f) {
+                            // 识别出来有两种情况，一种是新加的已经加入到useridtotrackid，一种是启动时从数据库取得需要userid与trackid匹配
                             String id = recRes.id.substring(0, recRes.id.length() - 2);
                             Stranger s = StrangerDbHelper.getInstance().get(id);
                             if (s != null && System.currentTimeMillis() - s.timestamp > 10 * 1000) {