desc:4种气体全部查询一遍之后，才去变化水印

app/src/main/java/com/yinuo/safetywatcher/watcher/port/GasPortUtils.kt

@@ -11,7 +11,7 @@ object GasPortUtils {
     private const val PORT_PATH = "/dev/ttyS6"
     const val FULL_MSG_SIZE = 25
     const val CHECK_TIME = 10000L
-    private const val READ_MSG_INTERVAL = 300L
+    private const val READ_MSG_INTERVAL = 200L
     private var mInitFlag = false
     private var readGasMsgThread: Thread? = null;
 

app/src/main/java/com/yinuo/safetywatcher/watcher/port/ParseHelper.kt

@@ -126,11 +126,11 @@ object ParseHelper {
     }
 
     private val overlayBuilder: StringBuilder = java.lang.StringBuilder()
-    private var lastTipTime = -1L
     private fun setOverlayData() {
+        if (gasMap.size < 4) {
+            return
+        }
         val currentTimeMillis = System.currentTimeMillis()
-        if (currentTimeMillis - lastTipTime > 1000) {
-            lastTipTime = currentTimeMillis
         overlayBuilder.clear()
         gasMap.forEach { item ->
             val gas = item.value
@@ -141,7 +141,7 @@ object ParseHelper {
             }
         }
         TxtOverlay.setShowTip(overlayBuilder.toString())
-        }
+        gasMap.clear()
     }
 
     /**