desc:根据气体类型创建map。使用新的简写方式

app/src/main/java/com/yinuo/safetywatcher/watcher/ui/QueryDataActivity.kt

@@ -136,24 +136,29 @@ class QueryDataActivity : BaseActivity() {
             val gasDao = DBUtils.gasDao()
             val gasList = gasDao.getAllByTime(startTime, endTime)
             // 多气体，分开创建list，存储之后。 再分步
-            val gasTypeDao = DBUtils.gasTypeDao()
-            val gasTypes = gasTypeDao.getAll()
-            // 每种气体建立一个list
-            val gasMap = HashMap<String, MutableList<Gas>>()
-            // 预先创建分步合一之后的list
-            val gasNewMap = HashMap<String, MutableList<Gas>>()
-            gasTypes.forEach {
-                gasMap[it.type] = mutableListOf()
-                gasNewMap[it.type] = mutableListOf()
-            }
-            // 分开各个气体的数据
-            gasList.forEach {
-                val list = gasMap[it.gasName]
-                list?.add(it)
+            val gasMap = gasList.groupBy {
+                it.gasName
             }
+            val gasNewMap = HashMap<String, MutableList<Gas>>()
+//            // 多气体，分开创建list，存储之后。 再分步
+//            val gasTypeDao = DBUtils.gasTypeDao()
+//            val gasTypes = gasTypeDao.getAll()
+//            // 每种气体建立一个list
+//            val gasMap = HashMap<String, MutableList<Gas>>()
+//            // 预先创建分步合一之后的list
+//            val gasNewMap = HashMap<String, MutableList<Gas>>()
+//            gasTypes.forEach {
+//                gasMap[it.type] = mutableListOf()
+//                gasNewMap[it.type] = mutableListOf()
+//            }
+//            // 分开各个气体的数据
+//            gasList.forEach {
+//                val list = gasMap[it.gasName]
+//                list?.add(it)
+//            }
             //根据步长分割数据填充新的列表
             gasMap.forEach { (type, list) ->
-                val newMapList = gasNewMap[type]
+                val newMapList = mutableListOf<Gas>()
                 var startGas: Gas? = null
                 var gasValue = 0.0
                 var tempTime = 0L
@@ -169,14 +174,14 @@ class QueryDataActivity : BaseActivity() {
                         if (gasValue >= 0.0) {
                             startGas!!.gasValue = gasValue / count
                             startGas!!.time = tempTime
-                            newMapList?.add(startGas!!)
+                            newMapList.add(startGas!!)
                         }
                         val offsetTime = gas.time - tempTime
                         val num = offsetTime / intervalMs
                         if (num > 0) {
                             for (i in num downTo 1) {
                                 tempTime += intervalMs
-                                newMapList?.add(gas.copy(time = tempTime, gasValue = -1.0))
+                                newMapList.add(gas.copy(time = tempTime, gasValue = -1.0))
                             }
                         }
                         tempTime += intervalMs
@@ -193,10 +198,11 @@ class QueryDataActivity : BaseActivity() {
                         if (gasValue >= 0.0) {
                             startGas!!.gasValue = gasValue / count
                             startGas!!.time = tempTime
-                            newMapList?.add(startGas!!)
+                            newMapList.add(startGas!!)
                         }
                     }
                 }
+                gasNewMap[type] = newMapList
             }
             mGasNewMap = gasNewMap
             var newList = mutableListOf<Gas>()