setstate Questions

setState not updating my star color because the FutureBuilder keeps rebuilding whenever I call setState – Flutter

March 20, 2023
Rehan
2 Answers

Positioned( top: 12, right: 12, child: SizedBox( height: 25, width: 25, child: CircleAvatar( backgroundColor: isGolden? Colors.amber :Colors.black87, child: IconButton( padding: EdgeInsets.zero, icon: Icon(Icons.star,), color: Color(0xFFFFFFD5), onPressed: (){ futureMessage = PostStoryFavoriteCreateDelete(snapshot.data!.data![index].id.toString()); ScaffoldMessenger.of(context).showSnackBar(SnackBar(elevation: 20,content: FutureBuilder( future: futureMessage, builder: (context, snapshot){ if (snapshot.hasData)…

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Warning of React setstate with an array without key props – Reactjs

March 17, 2023
Man Man Yu
2 Answers

Hi i am using React with an array mapping , in a user click function , i need to check which button user in pressing and set the button Pressed to be true, with the remaining set to false, my…

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React useState with a callback – Reactjs

March 11, 2023
AndrewLeonardi
2 Answers

I'm aware that useState is asynchronous. I'm attempting to have a toggle button that will add one point to score if itemSelected is true and remove one point from score if itemSelected is false. The issue here of course is…

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Passing a function that returns data to react native FlatList data property

March 9, 2023
dr7
2 Answers

I used the following function inside the Flatlist data property but it is not rendering anything. why? I think an alternative is to set state inside the function and use the state as the flatlist data property, but in that…

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I want to know the difference in performance Flutter setState

March 8, 2023
judy park
2 Answers

I want to know setState the difference in order. I write simple code below. setState(() { _counter++; }); _counter++; setState(() { }); I think setState frequency will affect the memory leak. I want to create a more stable version of…

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Flutter Dart setState o callBack tra istanze di classi diverse

Good evening everyone. I'm structuring an app on 2 columns. In the left column I would like to insert a button that updates the contents of the right column. Although keeping all the code in a single class I can…

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How To Use SetState In ExpandablePanel in flutter

March 5, 2023
Bavli Badry
2 Answers

in ExpandedPanel I put two buttons when press on the first change container contant, but setState() doesn't work to change the value of Scaffold_Syllabus* with the value of Table_Lecture***_Scaffold** the code class Syllabus extends StatefulWidget { const Syllabus({super.key}); @override State<Syllabus>…

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my question is not updating even after changing the index to that question – Flutter

February 27, 2023
Ahmad Maaz
2 Answers

what i want in this code is that the questions to change to the next one in the map whenever the user presses any of the true of false buttons, but the question is not updating even after changing the…

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Why I get the error trying to lift up props? – Reactjs

February 27, 2023
rigan
2 Answers

Here I have the state, and I am trying to pass them into child component SearchBar App Component (parent component) // not related code ... // search const { search, setSearch } = useState(""); const handleSearch = (e) => {…

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How to use setState() to change NavigationBar icons? – Flutter

February 25, 2023
best_of_man
2 Answers

I am trying to change the icon shape for each item of the following custom navigationBr based on weather they are selected or not: class HomeScreen extends StatefulWidget { static const routeName = '/home'; const HomeScreen({super.key}); @override State<HomeScreen> createState() =>…

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