WebNov 2, 2024 · 27. How to get selectedIndex of dropdown in flutter, In dropdownbutton there is no property to get selected index, if there how to get the selected index and my code look like this: new DropdownButton ( hint:new Text ("Select a users"),value: selectedUser, onChanged: (String newValue) { setState ( () { selectedUser = newValue; }); }, items ... WebSyntax. The syntax to get element at specific index index from the List list is. list.elementAt(index) Examples. In this example, we take a list of integers with five elements, and get elements at index 3, using List.elementAt() method.. main.dart
flutter - Enumerate or map through a list with index and value in Dart …
WebDec 3, 2024 · Your question is so vague. I will assume that you are looping on a list and want to show a specific widget when it comes to the last element. so all you have to do is just check if the index you are at is equal to the length of the list -1. i.e WebAug 23, 2024 · For the index you could use indexOf(value) function from the list to get index value. For example: List list = List.generate(3, (int index) => index * index); // [0, 1, 4] list.indexOf(4) // returns 2 As for your other issue, I'd need to see more code to see how you populate myList. I would suggest this approach (if it fits) to render your Row ... onzie divine shorts
Flutter; replace item in list - Stack Overflow
WebApr 22, 2024 · var lst = ["element1" , "element2" , "element3"]; lst.last // -> element3. The best one is lst [lst.length-1] way because in the "last" property ,it loops through the list until the last element is got , so it will be slower way. @AvisekSSarma It depends on the collection type and implementation. WebJul 10, 2024 · In Dart, the List class has 4 methods that can help you find the index of a specific element in a list: indexOf: Returns the first index of the first element in the list that equals a given element. Returns -1 if … WebApr 28, 2024 · You don't need to use ScrollEndNotification.In fact, I find the UX more responsive when the SliverAppBar updates during scrolling, and this is the most similar result to an onscroll handler anyways. Your idea of using notifications works fine if you change to just using the regular ScrollNotification.The problem is actually pretty … iowa blue cross blue shield advantage plan