flutter自定义日期选择器按日、按月、自定义开始、结束时间

在这里插入图片描述
导入包flutter_datetime_picker: 1.5.0
封装

import 'package:atui/jade/utils/JadeColors.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

class ATuiDateTimePickerDialog {
  static Future<DateTime> showDatePicker(
    BuildContext context, {
    bool showTitleActions: true,
    bool isShowDay: true,
    DateTime minTime,
    DateTime maxTime,
    DateChangedCallback onChanged,
    DateChangedCallback onConfirm,
    Function onCustomDateConfirm,
    DateCancelledCallback onCancel,
    locale: LocaleType.en,
    DateTime currentTime,
    DatePickerTheme theme,
  }) async {
    return await Navigator.push(
      context,
      _DatePickerRoute(
        showTitleActions: showTitleActions,
        onChanged: onChanged,
        onConfirm: onConfirm,
        onCustomDateConfirm: onCustomDateConfirm,
        onCancel: onCancel,
        locale: locale,
        theme: theme,
        isShowDay: isShowDay,
        barrierLabel:
            MaterialLocalizations.of(context).modalBarrierDismissLabel,
        pickerModel: DatePickerModel(
          currentTime: currentTime,
          maxTime: maxTime,
          minTime: minTime,
          locale: locale,
        ),
      ),
    );
  }
}

class _DatePickerRoute<T> extends PopupRoute<T> {
  _DatePickerRoute({
    this.showTitleActions,
    this.onChanged,
    this.onConfirm,
    this.onCustomDateConfirm,
    this.onCancel,
    theme,
    this.barrierLabel,
    this.locale,
    this.isShowDay,
    RouteSettings settings,
    pickerModel,
  })  : this.pickerModel = pickerModel ?? DatePickerModel(),
        this.theme = theme ?? DatePickerTheme(),
        super(settings: settings);

  final bool showTitleActions;
  final DateChangedCallback onChanged;
  final DateChangedCallback onConfirm;
  final Function onCustomDateConfirm;
  final DateCancelledCallback onCancel;
  final DatePickerTheme theme;
  final LocaleType locale;
  final BasePickerModel pickerModel;
  final bool isShowDay;
  @override
  Duration get transitionDuration => const Duration(milliseconds: 200);

  @override
  bool get barrierDismissible => true;

  @override
  final String barrierLabel;

  @override
  Color get barrierColor => Colors.black54;

  AnimationController _animationController;

  @override
  AnimationController createAnimationController() {
    assert(_animationController == null);
    _animationController =
        BottomSheet.createAnimationController(navigator.overlay);
    return _animationController;
  }

  @override
  Widget buildPage(BuildContext context, Animation<double> animation,
      Animation<double> secondaryAnimation) {
    Widget bottomSheet = MediaQuery.removePadding(
      context: context,
      removeTop: true,
      child: _DatePickerComponent(
        onChanged: onChanged,
        locale: this.locale,
        route: this,
        pickerModel: pickerModel,
        isShowDay: isShowDay,
      ),
    );
    return InheritedTheme.captureAll(context, bottomSheet);
  }
}

class _DatePickerComponent extends StatefulWidget {
  _DatePickerComponent(
      {Key key,
      @required this.route,
      this.onChanged,
      this.locale,
      this.pickerModel,
      this.isShowDay})
      : super(key: key);

  final DateChangedCallback onChanged;

  final _DatePickerRoute route;

  final LocaleType locale;

  final BasePickerModel pickerModel;

  bool isShowDay;
  @override
  State<StatefulWidget> createState() {
    return _DatePickerState();
  }
}

class _DatePickerState extends State<_DatePickerComponent> {
  FixedExtentScrollController leftScrollCtrl, middleScrollCtrl, rightScrollCtrl;

  List<String> _btnTitleList = ['按日','按月','自定义'];
  int _selectPosition = 0;
  bool _isCustomTime = false;
  String _startDate;
  String _endDate = '结束时间';
  int _customDateType = 1; //1:开始时间 2:结束时间

  @override
  void initState() {
    super.initState();
    refreshScrollOffset();
    _startDate = '${widget.pickerModel.finalTime().year}/${widget.pickerModel.finalTime().month}/${widget.pickerModel.finalTime().day}';
  }

  void refreshScrollOffset() {
//    print('refreshScrollOffset ${widget.pickerModel.currentRightIndex()}');
    leftScrollCtrl = FixedExtentScrollController(
        initialItem: widget.pickerModel.currentLeftIndex());
    middleScrollCtrl = FixedExtentScrollController(
        initialItem: widget.pickerModel.currentMiddleIndex());
    rightScrollCtrl = FixedExtentScrollController(
        initialItem: widget.pickerModel.currentRightIndex());
  }

  @override
  Widget build(BuildContext context) {
    DatePickerTheme theme = widget.route.theme;
    return GestureDetector(
      child: AnimatedBuilder(
        animation: widget.route.animation,
        builder: (BuildContext context, Widget child) {
          final double bottomPadding = MediaQuery.of(context).padding.bottom;
          return ClipRect(
            child: CustomSingleChildLayout(
              delegate: _BottomPickerLayout(
                widget.route.animation.value,
                theme,
                showTitleActions: widget.route.showTitleActions,
                bottomPadding: bottomPadding,
              ),
              child: GestureDetector(
                child: Material(
                  color: theme.backgroundColor ?? Colors.white,
                  shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.only(topLeft: Radius.circular(15.0),topRight: Radius.circular(10.0)), // 设置圆角半径
                  ),
                  child: _renderPickerView(theme)
                ),
              ),
            ),
          );
        },
      ),
    );
  }

  void _notifyDateChanged() {
    if (widget.onChanged != null) {
      widget.onChanged(widget.pickerModel.finalTime());
    }
    String _date = '${widget.pickerModel.finalTime().year}/${widget.pickerModel.finalTime().month}/${widget.pickerModel.finalTime().day}';
    if(_customDateType == 1){
      _startDate = _date;
    }else if(_customDateType == 2){
      _endDate = _date;
    }
  }

  Widget _renderPickerView(DatePickerTheme theme) {
    Widget itemView = _renderItemView(theme);
    return Column(
      children: <Widget>[
        if (widget.route.showTitleActions)
        _renderTitleActionsView(theme),
        _switchBtnView(),
        itemView,
      ],
    );
  }

  Widget _renderColumnView(
    ValueKey key,
    DatePickerTheme theme,
    StringAtIndexCallBack stringAtIndexCB,
    ScrollController scrollController,
    int layoutProportion,
    ValueChanged<int> selectedChangedWhenScrolling,
    ValueChanged<int> selectedChangedWhenScrollEnd,
  ) {
    return Expanded(
      flex: layoutProportion,
      child: Container(
        padding: EdgeInsets.all(8.0),
        height: theme.containerHeight,
        decoration: BoxDecoration(color: theme.backgroundColor ?? Colors.white),
        child: NotificationListener(
          onNotification: (ScrollNotification notification) {
            if (notification.depth == 0 &&
                selectedChangedWhenScrollEnd != null &&
                notification is ScrollEndNotification &&
                notification.metrics is FixedExtentMetrics) {
              final FixedExtentMetrics metrics = notification.metrics;
              final int currentItemIndex = metrics.itemIndex;
              selectedChangedWhenScrollEnd(currentItemIndex);
            }
            return false;
          },
          child: CupertinoPicker.builder(
            key: key,
            backgroundColor: theme.backgroundColor ?? Colors.white,
            scrollController: scrollController,
            itemExtent: theme.itemHeight,
            onSelectedItemChanged: (int index) {
              selectedChangedWhenScrolling(index);
            },
            useMagnifier: true,
            itemBuilder: (BuildContext context, int index) {
              final content = stringAtIndexCB(index);
              if (content == null) {
                return null;
              }
              return Container(
                height: theme.itemHeight,
                alignment: Alignment.center,
                child: Text(
                  content,
                  style: theme.itemStyle,
                  textAlign: TextAlign.start,
                ),
              );
            },
          ),
        ),
      ),
    );
  }

  Widget _renderItemView(DatePickerTheme theme) {
    return Container(
      color: theme.backgroundColor ?? Colors.white,
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: <Widget>[
          Container(
            child: widget.pickerModel.layoutProportions()[0] > 0
                ? _renderColumnView(
                    ValueKey(widget.pickerModel.currentLeftIndex()),
                    theme,
                    widget.pickerModel.leftStringAtIndex,
                    leftScrollCtrl,
                    widget.pickerModel.layoutProportions()[0], (index) {
                    widget.pickerModel.setLeftIndex(index);
                  }, (index) {
                    setState(() {
                      refreshScrollOffset();
                      _notifyDateChanged();
                    });
                  })
                : null,
          ),
          Text(
            widget.pickerModel.leftDivider(),
            style: theme.itemStyle,
          ),
          Container(
            child: widget.pickerModel.layoutProportions()[1] > 0
                ? _renderColumnView(
                    ValueKey(widget.pickerModel.currentLeftIndex()),
                    theme,
                    widget.pickerModel.middleStringAtIndex,
                    middleScrollCtrl,
                    widget.pickerModel.layoutProportions()[1], (index) {
                    widget.pickerModel.setMiddleIndex(index);
                  }, (index) {
                    setState(() {
                      refreshScrollOffset();
                      _notifyDateChanged();
                    });
                  })
                : null,
          ),
          Text(
            widget.pickerModel.rightDivider(),
            style: theme.itemStyle,
          ),
          widget.isShowDay ?? true
              ? Container(
                  child: widget.pickerModel.layoutProportions()[2] > 0
                      ? _renderColumnView(
                          ValueKey(
                              widget.pickerModel.currentMiddleIndex() * 100 +
                                  widget.pickerModel.currentLeftIndex()),
                          theme,
                          widget.pickerModel.rightStringAtIndex,
                          rightScrollCtrl,
                          widget.pickerModel.layoutProportions()[2], (index) {
                          widget.pickerModel.setRightIndex(index);
                        }, (index) {
                          setState(() {
                            refreshScrollOffset();
                            _notifyDateChanged();
                          });
                        })
                      : null,
                )
              : Container(),
        ],
      ),
    );
  }

  // Title View
  Widget _renderTitleActionsView(DatePickerTheme theme) {
    final done = _localeDone();
    final cancel = _localeCancel();

    return Container(
      height: theme.titleHeight,
      decoration: BoxDecoration(
        color: theme.headerColor ?? theme.backgroundColor ?? Colors.white,
        borderRadius: BorderRadius.only(topLeft: Radius.circular(15.0),topRight: Radius.circular(15.0))
      ),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: <Widget>[
          Container(
            height: theme.titleHeight,
            child: CupertinoButton(
              pressedOpacity: 0.3,
              padding: EdgeInsets.only(left: 16, top: 0),
              child: Text(
                '$cancel',
                style: theme.cancelStyle,
              ),
              onPressed: () {
                Navigator.pop(context);
                if (widget.route.onCancel != null) {
                  widget.route.onCancel();
                }
              },
            ),
          ),
          Container(
            height: theme.titleHeight,
            child: CupertinoButton(
              pressedOpacity: 0.3,
              padding: EdgeInsets.only(right: 16, top: 0),
              child: Text(
                '$done',
                style: theme.doneStyle,
              ),
              onPressed: () {
                Navigator.pop(context, widget.pickerModel.finalTime());
                if (widget.route.onConfirm != null) {
                  if(!_isCustomTime){
                    widget.route.onConfirm(widget.pickerModel.finalTime());
                  }else{
                    widget.route.onCustomDateConfirm(_startDate,_endDate);
                  }
                }
              },
            ),
          ),
        ],
      ),
    );
  }

  String _localeDone() {
    return i18nObjInLocale(widget.locale)['done'];
  }

  String _localeCancel() {
    return i18nObjInLocale(widget.locale)['cancel'];
  }
  //切换按钮
  Widget _switchBtnView(){
    return Container(
      height: 120.w,
      padding: EdgeInsets.symmetric(horizontal: 30.w),
      child: Column(
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Wrap(
                  alignment: WrapAlignment.start,
                  direction: Axis.horizontal,
                  spacing: 30.w,
                  textDirection: TextDirection.ltr,
                  children: List.generate(_btnTitleList.length, (index) {
                    return GestureDetector(
                      child: Container(
                        padding: EdgeInsets.only(left: 24.w,right: 24.w,top: 10.w,bottom: 12.w),
                        decoration: BoxDecoration(
                          color: _selectPosition == index ? JadeColors.yellow : JadeColors.lightGrey,
                          borderRadius: BorderRadius.all(Radius.circular(20)),
                        ),
                        child: Text(_btnTitleList[index],style: TextStyle(fontSize: 28.sp,color: _selectPosition == index ? JadeColors.grey_2 : JadeColors.grey),),
                      ),
                      onTap: (){
                        setState(() {
                          _selectPosition = index;
                          if(_selectPosition == 0){
                            widget.isShowDay = true;
                            _isCustomTime = false;
                          }else if(_selectPosition == 1){
                            widget.isShowDay = false;
                            _isCustomTime = false;
                          }else if(_selectPosition == 2){
                            widget.isShowDay = true;
                            _isCustomTime = true;
                          }
                        });
                      },
                    );
                  })
              ),
              GestureDetector(
                child: Container(
                  padding: EdgeInsets.only(left: 20.w,right: 20.w,top: 10.w,bottom: 10.w),
                  decoration: BoxDecoration(
                      color: Colors.white,
                      borderRadius: BorderRadius.circular(20),
                      border: Border.all(width: 1.w,color: JadeColors.grey_2)
                  ),
                  child: Text('清除筛选',style: TextStyle(fontSize: 28.sp,color: JadeColors.grey_2),),
                ),
              )
            ],
          ),
          _customDataSelectView()
        ],
      ),
    );
  }


  _customDataSelectView(){
    return _isCustomTime?Container(
      margin: EdgeInsets.only(top: 15.w),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.center,
        children: [
          GestureDetector(
              child: Column(children: [
                IntrinsicWidth(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Text(
                        "$_startDate",
                        style: TextStyle(overflow: TextOverflow.fade, color: _customDateType == 1?JadeColors.red_6 : JadeColors.grey_7, fontSize: 30.sp),
                      ),
                      Container(
                        margin: EdgeInsets.only(top: 1.h),
                        height: 1,
                        color: _customDateType == 1?JadeColors.red_6 : JadeColors.grey_7,
                      )
                    ],
                  ),
                ),
              ]),
              onTap: () {
                setState(() {
                  _customDateType = 1;
                });
              }),
          Container(width: 30.w, height: 1, color: JadeColors.grey_7, margin: EdgeInsets.symmetric(horizontal: 40.w)),
          GestureDetector(
              child: Column(children: [
                IntrinsicWidth(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Text(
                        "$_endDate",
                        style: TextStyle(overflow: TextOverflow.fade, color: _customDateType == 2?JadeColors.red_6 : JadeColors.grey_7, fontSize: 30.sp),
                      ),
                      Container(
                        margin: EdgeInsets.only(top: 1.h),
                        height: 1,
                        color: _customDateType == 2?JadeColors.red_6 : JadeColors.grey_7,
                      )
                    ],
                  ),
                ),
              ]),
              onTap: () {
                setState(() {
                  _customDateType = 2;
                });
              })
        ],
      ),
    ):Container();
  }

}

class _BottomPickerLayout extends SingleChildLayoutDelegate {
  _BottomPickerLayout(
    this.progress,
    this.theme, {
    this.itemCount,
    this.showTitleActions,
    this.bottomPadding = 0,
  });

  final double progress;
  final int itemCount;
  final bool showTitleActions;
  final DatePickerTheme theme;
  final double bottomPadding;

  @override
  BoxConstraints getConstraintsForChild(BoxConstraints constraints) {
    double maxHeight = theme.containerHeight;
    if (showTitleActions) {
      maxHeight += theme.titleHeight + 120.w;//增加actionTitle布局（取消、确定）时和切换按钮的布局时要在当前的布局高度上再加上去
    }

    return BoxConstraints(
      minWidth: constraints.maxWidth,
      maxWidth: constraints.maxWidth,
      minHeight: 0.0,
      maxHeight: maxHeight + bottomPadding,
    );
  }

  @override
  Offset getPositionForChild(Size size, Size childSize) {
    final height = size.height - childSize.height * progress;
    return Offset(0.0, height);
  }

  @override
  bool shouldRelayout(_BottomPickerLayout oldDelegate) {
    return progress != oldDelegate.progress;
  }
}

引用

_dateFilter() async {
    LocaleType localeType;
    await ATuiSharedPreferences.getStorage("localType")
        .then((value) {
      if (value == "zh") {
        localeType = LocaleType.zh;
      } else if (value == "en") {
        localeType = LocaleType.en;
      }
    });
    ATuiDateTimePickerDialog.showDatePicker(
      context,
      //isShowDay: false,
      locale: localeType ?? LocaleType.zh,
      theme: DatePickerTheme(
          cancelStyle: TextStyle(
              fontSize: 30.sp,
              color: JadeColors.grey_2),
          doneStyle: TextStyle(
              fontSize: 30.sp,
              color: JadeColors.grey_2,
              fontWeight: FontWeight.w600)),
      onConfirm: (datetime) async {
        String newDate = '${datetime.year}-${datetime.month}-${datetime.day}';
        newDate += datetime.month < 10
            ? '0${datetime.month}'
            : datetime.month.toString();
        print('非自定义时点击确定按钮= $newDate');
      },
      onCustomDateConfirm: (startDatetime,endDatetime) async {
        print('自定义时点击确定按钮');
        print('startDatetime= $startDatetime');
        print('endDatetime= $endDatetime');
      },
      onChanged: (datetime) {
        print('onChanged dateTime: ${datetime}');
      },
    );
  }