基本完成答案详情上下滑动功能，待接口数据再调试

app/src/main/java/com/gh/common/TimeElapsedHelper.kt

@@ -102,6 +102,10 @@ class TimeElapsedHelper(val fragment: Fragment?, val activity: Activity?) {
         }
     }
 
+    fun resetCounting() {
+        elapsedTime = 0
+    }
+
     fun pauseCounting() {
         isWorking = false
     }