How to create number input field in Flutter? - Printable Version +- 0Day Forums (https://0day.red) +-- Forum: Coding (https://0day.red/Forum-Coding) +--- Forum: Flutter & Dart (https://0day.red/Forum-Flutter-Dart) +--- Thread: How to create number input field in Flutter? (/Thread-How-to-create-number-input-field-in-Flutter) |
How to create number input field in Flutter? - Sirrichly3 - 07-21-2023 I'm unable to find a way to create an input field in Flutter that would open up a numeric keyboard and should take numeric input only. Is this possible with Flutter material widgets? Some GitHub discussions seem to indicate this is a supported feature but I'm unable to find any documentation about it. RE: How to create number input field in Flutter? - venison953 - 07-21-2023 You can Easily change the Input Type using the [keyboardType][1] Parameter and you have a lot of possibilities check the documentation [TextInputType][2] so you can use the number or phone value new TextField(keyboardType: TextInputType.number) [1]: [To see links please register here] [2]:[To see links please register here] RE: How to create number input field in Flutter? - salsify904 - 07-21-2023 Set the keyboard and a validator String numberValidator(String value) { if(value == null) { return null; } final n = num.tryParse(value); if(n == null) { return '"$value" is not a valid number'; } return null; } new TextFormField( keyboardType: TextInputType.number, validator: numberValidator, textAlign: TextAlign.right ... - [To see links please register here] -[To see links please register here] RE: How to create number input field in Flutter? - bellanca266 - 07-21-2023 You can try this: ```dart TextFormField( keyboardType: TextInputType.number, decoration: InputDecoration( prefixIcon: Text("Enter your number: ") ), initialValue: "5", onSaved: (input) => _value = num.tryParse(input), ), ``` RE: How to create number input field in Flutter? - pluralize428 - 07-21-2023 For those who need to work with **money format** in the text fields: To use only: , *(comma)* and . *(period)* and block the symbol: - *(hyphen, minus or dash)* as well as the: ⌴ *(blank space)* In your TextField, just set the following code: keyboardType: TextInputType.numberWithOptions(decimal: true), inputFormatters: [BlacklistingTextInputFormatter(new RegExp('[\\-|\\ ]'))], The simbols hyphen and space will still appear in the keyboard, but will become blocked. RE: How to create number input field in Flutter? - joriyv - 07-21-2023 `keyboardType: TextInputType.number` would open a num pad on focus, I would clear the text field when the user enters/past anything else. keyboardType: TextInputType.number, onChanged: (String newVal) { if(!isNumber(newVal)) { editingController.clear(); } } // Function to validate the number bool isNumber(String value) { if(value == null) { return true; } final n = num.tryParse(value); return n!= null; } RE: How to create number input field in Flutter? - timmieyjj - 07-21-2023 Here is code for actual Phone keyboard on Android: Key part: `keyboardType: TextInputType.phone,` ```dart TextFormField( style: TextStyle( fontSize: 24 ), controller: _phoneNumberController, keyboardType: TextInputType.phone, decoration: InputDecoration( prefixText: "+1 ", labelText: 'Phone number'), validator: (String value) { if (value.isEmpty) { return 'Phone number (+x xxx-xxx-xxxx)'; } return null; }, ), ``` RE: How to create number input field in Flutter? - slyviasm492 - 07-21-2023 You can use this two attributes together with TextFormField TextFormField( keyboardType: TextInputType.number inputFormatters: [WhitelistingTextInputFormatter.digitsOnly], It's allow to put only numbers, no thing else .. [To see links please register here] RE: How to create number input field in Flutter? - fiftyfifty615 - 07-21-2023 Here is code for numeric keyboard : **keyboardType: TextInputType.phone** When you add this code in textfield it will open numeric keyboard. final _mobileFocus = new FocusNode(); final _mobile = TextEditingController(); TextFormField( controller: _mobile, focusNode: _mobileFocus, maxLength: 10, keyboardType: TextInputType.phone, decoration: new InputDecoration( counterText: "", counterStyle: TextStyle(fontSize: 0), hintText: "Mobile", border: InputBorder.none, hintStyle: TextStyle( color: Colors.black, fontSize: 15.0. ), ), style: new TextStyle( color: Colors.black, fontSize: 15.0, ), ); RE: How to create number input field in Flutter? - daves684 - 07-21-2023 For number input or numeric keyboard you can use keyboardType: TextInputType.number TextFormField( decoration: InputDecoration(labelText:'Amount'), controller: TextEditingController( ), validator: (value) { if (value.isEmpty) { return 'Enter Amount'; } }, keyboardType: TextInputType.number ) |