增加离线地图下载流程

app/src/main/java/com/navinfo/omqs/Constant.kt

@@ -0,0 +1,19 @@
+package com.navinfo.omqs
+
+class Constant {
+    companion object {
+        /**
+         * 服务器地址
+         */
+        const val SERVER_ADDRESS = "http://fastmap.navinfo.com/drdc/"
+
+        const val DEBUG = true
+
+        const val message_status_late = "预约，待发送"
+        const val message_status_send_over = "已发送"
+        const val message_version_right_off = "1" //立即发送
+
+        const val MESSAGE_PAGE_SIZE = 30 //消息列表一页最多数量
+    }
+
+}