// Row、Expand 都是用于布局的控件,这里可以先忽略它们 return Row( children: <Widget>[ Expanded( child: TextField( controller: editController, ), ), RaisedButton( child: Text("click"), onPressed: () => print('text inputted: ${editController.text}'), ) ], ); } @override void dispose...
flutter: Vertical viewport was given unbounded height. flutter: Viewports expand in the scrolling direction to fill their container.In this case, a vertical flutter: viewport was given an unlimited amount of vertical space in which to expand. This situation flutter: typically happens when a scrollab...
flutter: Vertical viewport was given unbounded height. flutter: Viewports expand in the scrolling direction to fill their container.In this case, a vertical flutter: viewport was given an unlimited amount of vertical space in which to expand. This situation flutter: typically happens when a scrollab...
20.TextField 的prefixIcon图标宽度最小值小到一定长度,就不会再小了,通过包一个Padding或者Container组件使用padding属性挤小图标尺寸 21.Row组件子元素2端对其:mainAxisAlignment:MainAxisAlignment.spaceBetween, 22.去掉AppBar下面的阴影elevation: 0, appBar: AppBar(title: Text('登录页面',style: TextStyle(colo...
9. TextField 的游标是可定制的 我们可以根据需要自定义 TextField 的光标: TextField( cursorColor: Colors.purple, cursorRadius: Radius.circular(8.0), cursorWidth:8.0, ), 10. 按下按钮时改变文本颜色 是的,我们能做到 TextButton( onPressed: () {}, ...
all(16), child: Column( children: [ TextField( controller: _usernameController, decoration: InputDecoration( labelText: 'Username', ), ), TextField( controller: _passwordController, obscureText: true, decoration: InputDecoration( labelText: 'Password', ), ), SizedBox(height: 16), Elevated...
TextEditingController是一个控制文本输入框的控制器类,使用它来获取输入框TextField中的文本内容,以及监听输入框的变化。TextFormField是TextField的一个包装器(两者功能接近),它提供了更多的功能和验证选项,内置了表单验证和错误提示功能,例如 l textInputAction:键盘上显示的动作,比如下一个、搜索 ...
(height: 40), TextField( decoration: InputDecoration( labelText: 'Username', ), ), SizedBox(height: 20), TextField( obscureText: true, decoration: InputDecoration( labelText: 'Password', ), ), SizedBox(height: 40), ElevatedButton( onPressed: () {}, child: Text('Login'), ), ], )...
1.TextField简介 输入框,这个组件的属性非常的多 2.TextField属性 controller:文本控制器 focusNode:获取键盘焦点 decoration:InputDecoration 边框装饰 inputType:keyboardType 键盘类型 textInputAction:键盘的操作按钮类型 textCapitalization:TextCapitalization.none 配置大小写键盘 ...
12、flutter 输入框TextField //输入框焦点 final FocusNode _focusNode = new FocusNode(); //编辑控制器 final TextEditingController _textEC = new TextEditingController(); //文本输入框获取焦点 void _textFieldGetFocus() { FocusScope.of(context).requestFocus(this._focusNode); ...