I have an abstract class A: abstract class A { Future<String> firstMethod(); } and I implemented this abstract class: class Aimp implements A { @override Future<String> firstMethod() async { return "test"; } } I have created another abstract class: abstract…
I'm trying to change color of Decoration in ListView builder from static List Map values, failed with _castError (type 'String' is not a subtype of type 'Color' in type cast). What is the correct way to pass color values as…
I'm trying to get datas from api and add them a list. But at this moment, I see datas i got but I can't get it out of the function. What should i do? function List<dynamic> xxx = []; @override…
in my dart/flutter project I want to upload some blob-data to azure. I am using the package azblob. There I am allowed to add headers to the request and I want to give the headers request the "x-ms-range" to set…
I'm using Provider in Flutter for state management. And I want to display some text in my widget using this Provider. The test is shown but is looks very strange height or padding I don't know. So here is a…
I have a bottom navigation bar like this: When i click (1) in tab Home, it navigate to Detail page of item in tab My Learning (2) but not tab My Learning (using Navigator.of(context).push()). But not change tab to My…
I want to create a custom splash screen ** Android and IOS** like TrueCuller or WhatsApp or etc., but as I searched there is nothing to do that, anyone can help or suggestion, Thanks.Like this splash screens I used some…
I want to set TextField's height to exactly 200px, so the border would outline it. Only way I found is by setting padding, but it's not what i'm trying to find. I was hoping for some solution with SizedBox, like…
I have a Flutter program in which the click of a button changes something depending on the state of the button. I implemented it using ternary operator (which calls functions) and also with just an if-else block. Using ternary: void…
I am trying to read a qr code string from an image using scan: ^1.6.0 package in flutter , but the result is displayed only after I hot reload the application. but I want to print the result on the…