flutter中获取TextField的值需要通过TextEditingController，示例代码如下：

TextEditingController emailController = new TextEditingController();//声明controller
 
....
 
 
TextField(
  controller: emailController,//指定controller
  obscureText: true,
  textAlign: TextAlign.left,
  decoration: InputDecoration(
    border: InputBorder.none,
    hintText: '输入电子邮箱',
    hintStyle: TextStyle(color: Colors.grey),
  ),
)

然后通过emailController.text就可以获取到对应的TextField的值

转自：http://findsrc.com/flutter/detail/8808