我无法找到一种方法来创建一个输入字段颤振，将打开一个数字键盘，应该采取数字输入。这是可能的颤振材料部件?一些GitHub讨论似乎表明这是一个受支持的功能，但我无法找到任何关于它的文档。
当前回答
您可以使用keyboardType参数轻松更改输入类型 你有很多可能性检查文档TextInputType 所以你可以使用号码或电话值
new TextField(keyboardType: TextInputType.number)
其他回答
你可以试试这个:
TextFormField(
keyboardType: TextInputType.number,
decoration: InputDecoration(
prefixIcon: Text("Enter your number: ")
),
initialValue: "5",
onSaved: (input) => _value = num.tryParse(input),
),
下面是数字键盘的代码: keyboardType: TextInputType。当你在文本框中添加这个代码时，它将打开数字键盘。
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,
),
);
对于那些正在寻找使TextField或TextFormField只接受数字作为输入的人，尝试以下代码块:
用于flutter 1.20或更新版本
TextFormField(
controller: _controller,
keyboardType: TextInputType.number,
inputFormatters: <TextInputFormatter>[
// for below version 2 use this
FilteringTextInputFormatter.allow(RegExp(r'[0-9]')),
// for version 2 and greater youcan also use this
FilteringTextInputFormatter.digitsOnly
],
decoration: InputDecoration(
labelText: "whatever you want",
hintText: "whatever you want",
icon: Icon(Icons.phone_iphone)
)
)
对于1.20的早期版本
TextFormField(
controller: _controller,
keyboardType: TextInputType.number,
inputFormatters: <TextInputFormatter>[
WhitelistingTextInputFormatter.digitsOnly
],
decoration: InputDecoration(
labelText:"whatever you want",
hintText: "whatever you want",
icon: Icon(Icons.phone_iphone)
)
)
仅限号码类型
keyboardType: TextInputType.number
和更多的选择与数字垫
keyboardType: TextInputType.numberWithOptions(decimal: true,signed: false)
设置你的keyboardType为TextInputType.number，
例如:keyboardType: TextInputType.number，
TextFormField(
controller: yourcontroller,
keyboardType: TextInputType.number,
decoration: const InputDecoration(
labelText: 'Mobile',
suffixIcon: Padding(
padding: EdgeInsets.only(),
child:
Icon(Icons.phone_outlined, color: Color(0xffff4876)),
),
),
validator: (text) {
if (text == null || text.isEmpty) {
return 'Please enter your Mobile No.';
}
return null;
},
),
