add file

lib/widgets/components/Pick/DayPicker/demo.dart

@@ -0,0 +1,67 @@
+/*
+ * @Author: xiaojia.dxj
+ * @Date: 2018-12-17 15:37:32 
+ * @Last Modified by: xiaojia.dxj
+ * @Last Modified time: 2018-12-18 19:12:32
+ */
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+
+class DayPickerDemo extends StatefulWidget {
+  @override
+  State<StatefulWidget> createState() => _showDialog();
+}
+
+class _showDialog extends State<DayPickerDemo> {
+  DateTime _date = new DateTime.now();
+  TimeOfDay _time = new TimeOfDay.now();
+
+  Future<void> _selectDate(BuildContext context) async {
+    final DateTime picked = await showDatePicker(
+        context: context,
+        initialDate: _date,
+        firstDate: DateTime(2015, 8),
+        lastDate: DateTime(2101));
+    if (picked != null && picked != _date)
+      print("data selectied :${_date.toString()}");
+    setState(() {
+      _date = picked;
+    });
+
+    if (picked == null) _date = new DateTime.now();
+  }
+
+  Future<void> _selectTime(BuildContext context) async {
+    final TimeOfDay picked =
+        await showTimePicker(context: context, initialTime: _time);
+    if (picked != null && picked != _time)
+      print("data selectied :${_time.toString()}");
+    setState(() {
+      _time = picked;
+    });
+    if (picked == null) _time = new TimeOfDay.now();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return new Column(
+      children: <Widget>[
+        new Text('日期选择'),
+        new RaisedButton(
+          child: new Text('date selected:${_date.toString()}'),
+          onPressed: () {
+            _selectDate(context);
+          },
+        ),
+        new Text('时间选择'),
+        new RaisedButton(
+          child: new Text('date selected:${_time.toString()}'),
+          onPressed: () {
+            _selectTime(context);
+          },
+        )
+      ],
+    );
+  }
+}