将日期和时间选择器数据保存到Flutter中的Firebase Cloud Firestore数据库中

问题描述

我已经在Flutter应用中实现了日期和时间选择器。我想将选择的日期和时间保存到Firebase Cloud Firestore数据库中

RaisedButton(
            shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(5.0)),elevation: 4.0,onpressed: () {
              DatePicker.showDatePicker(context,theme: DatePickerTheme(
                    containerHeight: 210.0,),showTitleActions: true,minTime: DateTime(2010,1,1),maxTime: DateTime(2030,12,31),onConfirm: (date) {
                print('confirm $date');
                _date = '${date.year} - ${date.month} - ${date.day}';
                setState(() {});
              },currentTime: DateTime.Now(),locale: LocaleType.en);
            },child: Container(
              alignment: Alignment.center,height: 50.0,child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,children: <Widget>[
                  Row(
                    children: <Widget>[
                      Container(
                        child: Row(
                          children: <Widget>[
                            Icon(
                              Icons.date_range,size: 18.0,color: Colors.teal,Text(
                              " $_date",style: TextStyle(
                                  color: Colors.teal,fontWeight: FontWeight.bold,fontSize: 18.0),],)
                    ],Text(
                    "  Change",style: TextStyle(
                        color: Colors.teal,color: Colors.white,SizedBox(
            height: 20.0,RaisedButton(
            shape: RoundedRectangleBorder(
                borderRadius: BorderRadius.circular(5.0)),onpressed: () {
              DatePicker.showTimePicker(context,onConfirm: (time) {
                print('confirm $time');
                _time = '${time.hour} : ${time.minute} : ${time.second}';
                setState(() {});
              },locale: LocaleType.en);
              setState(() {});
            },children: <Widget>[
                  Row(
                    children: <Widget>[
                      Container(
                        child: Row(
                          children: <Widget>[
                            Icon(
                              Icons.access_time,Text(
                              " $_time",RaisedButton(
            color: Theme.of(context).primaryColor,textColor: Colors.white,child: Text(isEditMote ? "Update" : "Save"),onpressed: () async {
              if (_key.currentState.validate()) {
                try {
                  if (isEditMote) {
                    Note note = Note(
                      appID: _appIDController.text,doctorName: _doctorNameController.text,healthIssue: _healthIssueController.text,hospital: _hospitalController.text,id: widget.note.id,);
                    await FirestoreService().updateNote(note);
                  } else {
                    Note note = Note(
                      appID: _appIDController.text,);
                    await FirestoreService().addNote(note);
                  }
                  Navigator.pop(context);
                } catch (e) {
                  print(e);
                }
              }
            },);

} }

这是相关的示例代码。我向数据库传递了其他4个参数，就像我想传递此日期和时间选择器数据一样。前两个升高按钮包含日期和时间选择器，最后一个升高按钮涉及数据保存单元。

解决方法

您将日期时间另存为Epoch时间戳中的整数值或DateTime对象。

for i in [1,2,3]:
     globals()['ax%s' % (i)] = i

OR

int selectedDT=pickedDateTime.millisecondsSinceEpoch;
Firestore.instance.collection('CollectionName').document(docName).setData({
'date_time': selectedDT
 });