textfield

问题 I have a textfield connected to its TextEditingController() . Inside the onChanged: callback I perform a text check to only allow for time input. When running on iOS CupertinoTextfield is used and it behaves as expected, at every input cursor moves so next digit is at the right position, so inputting 1000 will result in 10:00. When running on web or Android Material Textfield is used instead, the problem is that text is displayed backward as the cursor stays at first position so inputting

问题 I have two Published state in my viewmodel one is for source and another one is for destination Based on the solution here to detect live changes on textfield. I have implemented like this TextField("", text: $viewModel.source) TextField("", text: $viewModel.destination) Problem, here is i need to update the either fields whenever user enter some value. For example - If user enter on source then i need to update destination with source inputs. And if user input destination then need to update

问题 I have two Published state in my viewmodel one is for source and another one is for destination Based on the solution here to detect live changes on textfield. I have implemented like this TextField("", text: $viewModel.source) TextField("", text: $viewModel.destination) Problem, here is i need to update the either fields whenever user enter some value. For example - If user enter on source then i need to update destination with source inputs. And if user input destination then need to update

问题 I'm building a simple soundboard app in Flutter, which includes a search bar at the top of the application. At the point where the search is activated, the interesting bit of the widget tree is as follows: home: Scaffold( appBar: AppBar( title: new TextField( controller: _filter, decoration: new InputDecoration( prefixIcon: new Icon(Icons.search, color: Colors.white), hintText: 'Search...' ), As text is typed into the search bar, a listener on the _filter updates a list of quotes which is

问题 I want a ‘+’ Sign in the Textfield which cannot be erased. A user should be able to enter values after it and if he presses backspace it should only erase the value he entered. And when I write any other number it will automatically add a ‘+’ at the beginning of the enter value. For Example:- I want to add country code in the textfield so, '+' automatically add in the beginning of the field as soon as user start typing a country code. 回答1: normally you should post your coding tries here,

问题 I want a ‘+’ Sign in the Textfield which cannot be erased. A user should be able to enter values after it and if he presses backspace it should only erase the value he entered. And when I write any other number it will automatically add a ‘+’ at the beginning of the enter value. For Example:- I want to add country code in the textfield so, '+' automatically add in the beginning of the field as soon as user start typing a country code. 回答1: normally you should post your coding tries here,

问题 I want to input only decimal number in TextField in Flutter . I tried below code but that's not working. It allows alpha (a-z) and special characters. TextField( controller: new TextEditingController(text: listDisplay[position].getBlockQty(), ), textAlign: TextAlign.center, maxLines: 1, keyboardType: TextInputType.numberWithOptions( decimal: true, signed: false), ), 回答1: You can use TextInputFormatter for this case. Here is an example for the same, Subclass TextInputFormatter import 'package

问题 I want to allow the user to filter data in a long list to more easily find matching titles. I have placed a TextView inside my navigation bar: .navigationBarTitle(Text("Library")) .navigationBarItems(trailing: TextField("search", text: $modelData.searchString) I have an observable object which responds to changes in the search string: class DataModel: ObservableObject { @Published var modelData: [PDFSummary] @Published var searchString = "" { didSet { if searchString == "" { modelData = Realm

问题 I want to allow the user to filter data in a long list to more easily find matching titles. I have placed a TextView inside my navigation bar: .navigationBarTitle(Text("Library")) .navigationBarItems(trailing: TextField("search", text: $modelData.searchString) I have an observable object which responds to changes in the search string: class DataModel: ObservableObject { @Published var modelData: [PDFSummary] @Published var searchString = "" { didSet { if searchString == "" { modelData = Realm

问题 I'm using a modal to add names to a list. When the modal is shown, I want to focus the TextField automatically, like this: I've not found any suitable solutions yet. Is there anything implemented into SwiftUI already in order to do this? Thanks for your help. var modal: some View { NavigationView{ VStack{ HStack{ Spacer() TextField("Name", text: $inputText) // autofocus this! .textFieldStyle(DefaultTextFieldStyle()) .padding() .font(.system(size: 25)) // something like .focus() ?? Spacer() }