Issue I want to add a border color around an oval shaped image that doesn’t have a constant height value. My code example: Align( child: ConstrainedBox( constraints: const BoxConstraints( maxHeight: 220.0, ), child: Container( height: null, width: 150.0, decoration: BoxDecoration(
Continue readingTag: dart-2
How – Compare 2 arrays of different lengths and look for matching values – Flutter
Issue Im not sure if my strategy or logic is correct to achieve this, but I have 2 Lists coming from 2 different jsondata mysql quieries, lets say they look like this: List newsAgency = [{id: 1, name: 9news, image:
Continue readingThe argument type 'Function' can't be assigned to the parameter type 'String? Function(String?)? after dart2
Issue I am getting error The argument type ‘Function’ can’t be assigned to the parameter type ‘String? Function(String?)? after dart 2 for a form field widget. full code: class MyFormField extends StatelessWidget { Function onTextChanged; Function formValidator; MyFormField( { required
Continue readingCan dynamic type in Dart 2 assign to several value of difference type?
Issue Can dynamic type in Dart 2 assign to value of difference type and how compile infer them? For example what is x type in dart 2 and does this compile? dynamic x = 1; x = x + “Hello”;
Continue readingUnable to run Dart2 w/ Angular for web along side Flutter for mobile project – plan to share code
Issue I have made good progress with Flutter on mobile apps. Currently using: [✓] Flutter (Channel master, v0.3.1-pre.13, on Mac OS X 10.13.4 17E199, locale en-US) • Flutter version 0.3.1-pre.13 at /Users/golftocs/PhpstormProjects/flutter • Framework revision 85be28d36b (32 hours ago), 2018-04-16
Continue readingCannot omit 'new' keyword despite using Dart 2.0
Issue When i run the tests of my application i get this exception: NoSuchMethodError: Attempted to use type ‘SimplePipe’ as a function. Since types do not define a method ‘call’, this is not possible. Did you intend to call the
Continue readingsearch in maps dart2 , same as list.indexOf?
Issue I Use this sample for search in Map but not work :|: var xmenList = [‘4′,’xmen’,’4xmen’,’test’]; var xmenObj = { ‘first’: ‘4’, ‘second’: ‘xmen’, ‘fifth’: ‘4xmen’, ‘author’: ‘test’ }; print(xmenList.indexOf(‘4xmen’)); // 2 print(xmenObj.indexOf(‘4xmen’)); // ? but I have error
Continue readingHow to typedef a generic function?
Issue I have a generic static method that looks like this: static build<K>() { return (GenericClass<K> param) => MyClass<K>(param); } So far I have tried: typedef F = MyClass<K> Function(GenericClass<K> param); but it says that: The return type ‘(GenericClass<K>) →
Continue readingOnly static members can be accessed in initializer. Dart2.0
Issue I am using banklist in stateful widget. passing list to pageState using List<Bank> bankLists = this.widget.bankLists; Que 1. Why I am getting error at gradientcolor: gradientBankCard(“FFB74093″,”FFB74093”)) that only static members can be accessed in initializer? Que 2. How to
Continue readingGetting error when trying to set min width using ButtonTheme
Issue I am trying to set minWidth in ButtonTheme. I am getting following error: Error: Getter not found: ‘context’. compiler message: minWidth: MediaQuery.of(context).size.width-40, For reference I am sharing code here: final resetButton = ButtonTheme( minWidth: MediaQuery.of(context).size.width-40, height: 50.0, child: new
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