TextField聚焦

Question

我有四个TextField，我希望每个TextField都尽可能地集中注意力，以使其下方和上方的文本仍然可见且可按。我将在一分钟内添加图像。

我想要的是当我按下密码[输入密码]字段时，确认密码字段也可见。

如果有人可以帮助您，将不胜感激。 有什么方法可以达到这种效果

http://imgur.com/a/pUpr754

Widget _buildNameTF(){
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: < Widget > [
        Text(
          'Full Name',
          style: kLabelStyle,
        ),
        SizedBox(height: 10.0, ),
        Container(
          alignment: Alignment.centerLeft,
          decoration: kBoxDecorationStyle,
          height: 60,
          child: TextField(
            autofocus: true,
            cursorColor: Colors.white,
            controller: enteredName,
            style: TextStyle(color: Colors.white),
            decoration: InputDecoration(
              border: InputBorder.none,
              contentPadding: EdgeInsets.only(top: 14.0),
              prefixIcon: Icon(
                Icons.person,
                color: Colors.white,
              ),
              hintText: 'Enter your full name.',
              hintStyle: kHintTextStyle,
            ),
          ),
        )
      ],
    );
  }

  Widget _buildEmailTF() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: < Widget > [
        Text(
          'Email',
          style: kLabelStyle,
        ),
        SizedBox(height: 10.0, ),
        Container(
          alignment: Alignment.centerLeft,
          decoration: kBoxDecorationStyle,
          height: 60,
          child: TextField(
            autofocus: true,
            cursorColor: Colors.white,
            controller: enteredEmail,
            keyboardType: TextInputType.emailAddress,
            style: TextStyle(color: Colors.white),
            decoration: InputDecoration(
              border: InputBorder.none,
              contentPadding: EdgeInsets.only(top: 14.0),
              prefixIcon: Icon(
                Icons.email,
                color: Colors.white,
              ),
              hintText: 'Enter your Email address.',
              hintStyle: kHintTextStyle,
            ),
          ),
        )
      ],
    );
  }

  Widget _buildPasswordTF() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: < Widget > [
        Text(
          'Password',
          style: kLabelStyle,
        ),
        SizedBox(height: 10.0, ),
        Container(
          alignment: Alignment.centerLeft,
          decoration: kBoxDecorationStyle,
          height: 60,
          child: TextField(
            autofocus: true,
            cursorColor: Colors.white,
            controller: enteredPassword,
            obscureText: true,
            style: TextStyle(color: Colors.white),
            decoration: InputDecoration(
              border: InputBorder.none,
              contentPadding: EdgeInsets.only(top: 14.0),
              prefixIcon: Icon(
                Icons.lock,
                color: Colors.white,
              ),
              hintText: 'Enter your password.',
              hintStyle: kHintTextStyle,
            ),
          ),
        ),
      ],
    );
  }

  Widget _confirmPasswordTF() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: < Widget > [
        Text(
          'Confirm Password',
          style: kLabelStyle,
        ),
        SizedBox(height: 10.0, ),
        Container(
          alignment: Alignment.centerLeft,
          decoration: kBoxDecorationStyle,
          height: 60,
          child: TextField(
            autofocus: true,
            cursorColor: Colors.white,
            controller: confirmedPassword,
            obscureText: true,
            style: TextStyle(color: Colors.white),
            decoration: InputDecoration(
              border: InputBorder.none,
              contentPadding: EdgeInsets.only(top: 14.0),
              prefixIcon: Icon(
                Icons.lock,
                color: Colors.white,
              ),
              hintText: 'Confirm your password.',
              hintStyle: kHintTextStyle,
            ),
          ),
        ),
      ],
    );
  }