flutter-futurebuilder
Flutter: There should be exactly one item with [DropdownButton]’s value
Well, since no problem has an exact same solution. I was facing the same issue with my code. Here is How I fixed this. CODE of my DropdownButton: DropdownButton( items: _salutations .map((String item) => DropdownMenuItem<String>(child: Text(item), value: item)) .toList(), onChanged: (String value) { setState(() { print(“previous ${this._salutation}”); print(“selected $value”); this._salutation = value; }); }, value: … Read more
Flutter StreamBuilder vs FutureBuilder
Both StreamBuilder and FutureBuilder have the same behavior: They listen to changes on their respective object. And trigger a new build when they are notified of a new value. So in the end, their differences are how the object they listen to works. Future is like Promise in JS or Task in c#. They are … Read more
What is a Future and how do I use it?
In case you are familiar with Task<T> or Promise<T> and the async/ await pattern, then you can skip right to the “How to use a Future with the widgets in Flutter” section. What is a Future and how do I use it? Well, the documentation says: An object representing a delayed computation. That is correct. … Read more