refactor(many files): 页面部分的文件结构调整

1.views 文件夹里面分类，页面相关文件;2.公共组件全部放在components里;3.创建resources文件夹放置资源dart文件4.修改二级菜单文字大小

BREAKING CHANGE: 重构，建议删除本地db,再编译

lib/utils/sql.dart

@@ -0,0 +1,98 @@
+import './provider.dart';
+import 'dart:async';
+import 'package:sqflite/sqflite.dart';
+
+
+
+
+class BaseModel{
+  Database db;
+  final String table = '';
+  var query;
+  BaseModel(this.db){
+    query = db.query;
+  }
+}
+
+class Sql extends BaseModel {
+  final String tableName;
+  Sql.setTable(String name)
+      : tableName = name,
+        super(Provider.db);
+
+  // sdf
+  Future<List> get() async{
+    return await this.query(tableName);
+  }
+  String getTableName () {
+    return tableName;
+  }
+
+  Future<int> delete(String value,String key) async{
+    return await this.db.delete(tableName,where:'$key = ?',whereArgs:[value]);
+  }
+
+  Future<List> getByCondition({Map<dynamic, dynamic> conditions}) async {
+    if (conditions == null || conditions.isEmpty) {
+      return this.get();
+    }
+    String stringConditions = '';
+
+    int index = 0;
+    conditions.forEach((key, value) {
+      if (value == null) {
+        return ;
+      }
+      if (value.runtimeType == String) {
+        stringConditions = '$stringConditions $key = "$value"';
+      }
+      if (value.runtimeType == int) {
+        stringConditions = '$stringConditions $key = $value';
+      }
+
+      if (index >= 0 && index < conditions.length -1) {
+        stringConditions = '$stringConditions and';
+      }
+      index++;
+    });
+    // print("this is string condition for sql > $stringConditions");
+    return await this.query(tableName, where: stringConditions);
+  }
+  Future<Map<String, dynamic>> insert(Map<String, dynamic> json) async {
+    var id = await this.db.insert(tableName, json);
+    json['id'] = id;
+    return json;
+  }
+  ///
+  /// 搜索
+  /// @param Object condition
+  /// @mods [And, Or] default is Or
+  /// search({'name': "hanxu', 'id': 1};
+  ///
+  Future<List> search({Map<String, dynamic> conditions, String mods = 'Or'}) async {
+    if (conditions == null || conditions.isEmpty) {
+      return this.get();
+    }
+    String stringConditions = '';
+    int index = 0;
+    conditions.forEach((key, value) {
+      if (value == null) {
+        return ;
+      }
+
+      if (value.runtimeType == String) {
+        stringConditions = '$stringConditions $key like "%$value%"';
+      }
+      if (value.runtimeType == int) {
+        stringConditions = '$stringConditions $key = "%$value%"';
+      }
+
+      if (index >= 0 && index < conditions.length -1) {
+        stringConditions = '$stringConditions $mods';
+      }
+      index++;
+    });
+
+    return await this.query(tableName, where: stringConditions);
+  }
+}