janoodleFTW/timy-messenger

════════ Exception caught by widgets library ═════════════════════════════════════════════════

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#35 创建于 2020年1月30日

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help wanted

描述

Simulator Screen Shot - iPhone 11 Pro Max - 2020-01-29 at 19 54 37 The following NoSuchMethodError was thrown building LayoutBuilder: The method 'toDouble' was called on null. Receiver: null Tried calling: toDouble()

The relevant error-causing widget was: LayoutBuilder file:///Users/lib/presentation/calendar/calendar_screen.dart:214:12 When the exception was thrown, this was the stack: #0 Object.noSuchMethod (dart:core-patch/object_patch.dart:53:5) #1 double.* (dart:core-patch/double.dart:38:23) #2 CalendarScreen._buildCalendarList (package:circles_app/presentation/calendar/calendar_screen.dart:149:37) #3 CalendarScreen._calendar. (package:circles_app/presentation/calendar/calendar_screen.dart:221:20) #4 _LayoutBuilderElement._layout. (package:flutter/src/widgets/layout_builder.dart) ... ════════════════════════════════════════════════════════════════════════════════════════════════════

════════ (2) Exception caught by rendering library ═════════════════════════════════════════════════ A RenderFlex overflowed by 99768 pixels on the right. The relevant error-causing widget was: Row file:///Users/lib/presentation/home/circles_drawer.dart:54:14 ════════════════════════════════════════════════════════════════════════════════════════════════════ [VERBOSE-2:ui_dart_state.cc(157)] Unhandled Exception: 'package:flutter/src/widgets/scroll_controller.dart': Failed assertion: line 110 pos 12: '_positions.isNotEmpty': ScrollController not attached to any scroll views. #0 _AssertionError._doThrowNew (dart:core-patch/errors_patch.dart:42:39) #1 _AssertionError._throwNew (dart:core-patch/errors_patch.dart:38:5) #2 ScrollController.position (package:flutter/src/widgets/scroll_controller.dart:110:12) #3 ScrollController.offset (package:flutter/src/widgets/scroll_controller.dart:118:24) #4 CalendarScreen.build.. (package:circles_app/presentation/calendar/calendar_screen.dart:313:35) #5 new Future.delayed. (dart:async/future.dart:316:39) #6 _rootRun (dart:async/zone.dart:1122:38) #7 _CustomZone.run (dart:async/zone.dart:1023:19) #8 _CustomZone.runGuarded (dart:async/zone.dart:925:7) #9 _CustomZone.bindCallbackGuarded. (dart:async/z<…>

NB!!!! And does the emoji reactions, do they work cos i can't still figured it out. Simulator Screen Shot - iPhone 11 Pro Max - 2020-01-29 at 19 54 37

贡献者指南

技术栈
dartflutter
领域
mobile
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
half day
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
Basic Flutter and Dart knowledgeFamiliarity with LayoutBuilder and ScrollController
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
30
研究方向
Start by reproducing the crash on iOS simulator. Examine the file `calendar screen.dart` around line 149 where ` buildCalendarList` calls `toDouble()` on a null value. Also check `circles drawer.dart` line 54 for the Row overflow. The ScrollController assertion suggests a timing issue; ensure the controller is attached before accessing offset. The issue is from 2020 and has no comments, so confirm it still exists in the latest version.