Flutter 开发遇到错误: LateInitializationError: Field 'animationStatus' has not been initialized。 原因是在初始化之前使用了它,我解决这个问题方法是为 AnimationStatus 添加了一个初始状态。 late AnimationStatus animationStatus = AnimationStatus.reverse; 1. 有bug 的代码: void main() { runApp(MyApp());...
需求:Flutter请求完成数据后动态改变TabController数量 但是Flutter动态更TabController数量提示LateInitializationError: Fieldtabcontroller' has not beeninitialized. 错误代码如下: lateTabControllertabcontroller;voidonInit()async{super.onInit();//顶部tabs请求await getColumData();}getColumData()async{varresponse=await...
我对Flutter 相当陌生,我要在 Flutter 上构建一个 Messenger Chap 应用程序,我遇到了“LateInitilization:字段‘searchSnapShot’尚未初始化”的问题。以下是导致该问题的代码片段:Widget searchList() { return searchSnapShot != null ? ListView.builder( itemCount: searchSnapShot.docs.length, shrinkWrap: true,...
Flutter LateInitializationError: Field ‘XXXX‘ has not been initialized. 网上有很多解决办法,无法解决我的问题,dart使用高版本后 late 的数据原本以为只在initState 函数里就行了 但是不行 如图需要加setState 放在里面才可行
报错信息1: LateError (LateInitializationError: Field 'currentModel' has not been initialized.) 代码如下://传值对象 var lastObject; late StudentModel currentModel; // = StudentModel('', '', '', ''); var name; _initData() { update(...
Error (dart.core) AsyncError (dart.async) JsonUnsupportedObjectError (dart.convert) JsonCyclicError (dart.convert) LateInitializationErrorImpl (dart._internal) FlutterError (assertions.dart) RemoteError (dart.isolate) UnderflowError (quiver.async) ...
Hello, I am using latest flutter and flutter doctor shows no issues. I see (live app) many errors like this: LateError: LateInitializationError: Local 'built' has not been initialized. I am not sure is SilverAppBar is related but I saw t...
Do you have a stack trace for the error? The message means that alatedeclared variable named_localis being read before it has been written. I don't see any such declaration in the Dart platform libraries. The most likely culprit is in the timezone package,https://github.com/srawlins/tim...
flutter: LateInitializationError: Field '_instance@38265524' has not been initialized. 关于这个问题,比较重要,在网上看了,并没有合适的说法;针对性的问题解法,还是要自己解决源码; 逐层修改,最后发现,如果不做拆包,sdk直接应用在应用中,在应用初始化运行的时候,会自然的对 QuickUsbPlatform _instance 进行初始...
LateError (LateInitializationError: Field 'homeButtons' has not been initialized.) 二、赋默认值 在定义类的一个属性homeButtons时,就赋上默认值。暂时不会报编译错误了,在使用属性之前,给该属性一个真实的数据。如果属性的值可知,亦可以默认值就是真实值。