How to limit the number of inputable lines in a textField-CodePudding

TextField.maxLines seems to be an option to limit the height of the Widget, not to limit the number of lines that can be input.

Is there a way to limit the number of inputable lines itself?

CodePudding user response：

Method1: You can set maxLines along with maxLength. If you don't want to show counter text at TextField bottom then add empty counterText in InputDecoration.

TextField(
  maxLength: 10, 
  maxLines: 2,  
  decoration: InputDecoration(
  counterText: ''
 ),
)

Method2: You can use inputFormatters property:

import 'package:flutter/services.dart';

TextFormField(
      inputFormatters: [
        LengthLimitingTextInputFormatter(10),
      ]
    )

CodePudding user response：

You can set define maxLines with maxLength eg. TextField(maxLines: 4, maxLength: 500)