q876625596 / kumi_popup_window Goto Github PK

 IconButton(
        icon: Icon(MaterialIcons.remove),
        onPressed: () {
                   setState(() {
                         quantity = quantity - 1;
                  });
}),
Text(quantity.toString()),

(11175): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: NoSuchMethodError: The method 'reverse' was called on null.
E/flutter (11175): Receiver: null
E/flutter (11175): Tried calling: reverse()
E/flutter (11175): #0      Object.noSuchMethod (dart:core-patch/object_patch.dart:53:5)
E/flutter (11175): #1      KumiPopupWindow.dismiss (package:kumi_popup_window/kumi_popup_window.dart:322:23)
E/flutter (11175): #2      _IndexPageState._clickPopMenu (package:machineflutter/ui/index.dart:124:18)
E/flutter (11175): #3      _IndexPageState._buildPopMenu.<anonymous closure> (package:machineflutter/ui/index.dart:118:24)
E/flutter (11175): #4      _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:779:19)
E/flutter (11175): #5      _InkResponseState.build.<anonymous closure> (package:flutter/src/material/ink_well.dart:862:36)
E/flutter (11175): #6      GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:182:24)
E/flutter (11175): #7      TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:504:11)
E/flutter (11175): #8      BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:282:5)
E/flutter (11175): #9      BaseTapGestureRecognizer.acceptGesture (package:flutter/src/gestures/tap.dart:254:7)
E/flutter (11175): #10     GestureArenaManager.sweep (package:flutter/src/gestures/arena.dart:156:27)
E/flutter (11175): #11     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:222:20)
E/flutter (11175): #12     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:198:22)
E/flutter (11175): #13     GestureBinding._handlePointerEvent (package:flutter/src/gestures/binding.dart:156:7)
E/flutter (11175): #14     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:102:7)
E/flutter (11175): #15     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:86:7)
E/flutter (11175): #16     _rootRunUnary (dart:async/zone.dart:1196:13)
E/flutter (11175): #17     _CustomZone.runUnary (dart:async/zone.dart:1085:19)
E/flutter (11175): #18     _CustomZone.runUnaryGuarded (dart:async/zone.dart:987:7)
E/flutter (11175): #19     _invoke1 (dart:ui/hooks.dart:275:10)
E/flutter (11175): #20     _dispatchPointerDataPacket (dart:ui/hooks.dart:184:5)
E/flutter (11175): 

Widget build(BuildContext context) {
    _context = context;
    initPop();
   // 控件点击事件
     onRightIconClick: () {
                    _popupWindow.show(_context);
                  },
}

void initPop() {
    _popupWindow = createPopupWindow(_context,
        duration: Duration(milliseconds: 200),
        gravity: KumiPopupGravity.rightTop,
        offsetX: ScreenUtil().setWidth(-10),
        offsetY: ScreenUtil().setWidth(-20),
        underStatusBar: false,
        underAppBar: true, childFun: (pop) {
      return GestureDetector(
          key: GlobalKey(),
          onTap: () {
            isSelect.value = !isSelect.value;
          },
          child: PopView(
              pathShape: PathShapeEnum.Top,
              radius: 10,
              percent: 0.8,
              child: Container(
                  width: ScreenUtil().setWidth(200),
                  height: ScreenUtil().setHeight(225),
                  padding: EdgeInsets.symmetric(
                      vertical: 0, horizontal: ScreenUtil().setWidth(18)),
                  color: Colours.color_white,
//                              decoration: ,
                  child: ListView(
                      padding: EdgeInsets.only(top: 10),
                      children: _buildPopMenus()))));
    });
  }

/// 构造单个PopMenu样式
  Widget _buildPopMenu(int index) {
    return Container(
        height: ScreenUtil().setHeight(70),
        child: ListTile(
          contentPadding: EdgeInsets.only(top: 0),
          title: Text(
            _popMenuList[index].label,
            style: TextStyle(
                color: Colours.color_525065,
                fontSize: ScreenUtil().setSp(22),
                fontWeight: FontWeight.w500),
          ),
          trailing: UI.icon(_popMenuList[index].iconPath,
              width: ScreenUtil().setWidth(28),
              height: ScreenUtil().setWidth(28)),
          onTap: () => _clickPopMenu(index),
        ));
  }

  /// popMenu点击事件
  _clickPopMenu(int index) {
    _popupWindow.dismiss(_context);
    switch (index) {
      case 0: // 切换仓库
        Fluttertoast.showToast(msg: '切换仓库');
        break;
      case 1: // 清除缓存
        Fluttertoast.showToast(msg: '清除缓存');
        break;
      case 2: // 退出登录
        Fluttertoast.showToast(msg: '退出登录');
        break;
    }
  }

  /// 构造popMenu列表
  List<Widget> _buildPopMenus() {
    return ListTile.divideTiles(
            context: context,
            tiles: _popMenuList
                .asMap()
                .keys
                .map((index) => _buildPopMenu(index))
                .toList())
        .toList();
  }