[Androrid]笔记9-用户友好的输入界面

对于一个用户友好的输入界面而言，接受用户输入的文本框内默认会提示用户如何输入；当前用户把焦点切换到输入框时，输入框自动选中其中已输入的内容，避免用户删除已有内容；当用户把焦点切换到只接受电话号码时，输入法自动切换到键盘

<?xml version="1.0" encoding="utf-8"?><TableLayout xmlns:androrid="http://schemas.android.com/apk/res/android"    androrid:layout_width="match_parent"    androrid:layout_height="match_parent"    androrid:stretchColumns="1"    >    <TableRow>    <TextView        androrid:layout_width="match_parent"        androrid:layout_height="wrap_content"        androrid:text="用户名"        androrid:textSize="16sp"        />        <EditText            androrid:layout_width="match_parent"            androrid:layout_height="wrap_content"            androrid:hint="请填写登录账号"            androrid:selectAllOnFocus="true"            />    </TableRow>    <TableRow>        <TextView            androrid:layout_width="match_parent"            androrid:layout_height="wrap_content"            androrid:text="密码"            androrid:textSize="16sp"            />        <!--只能接受数字密码-->        <EditText            androrid:layout_width="match_parent"            androrid:layout_height="wrap_content"            androrid:inputType="numberPassword"            />    </TableRow>    <TableRow>        <TextView            androrid:layout_width="match_parent"            androrid:layout_height="wrap_content"            androrid:text="年龄"            androrid:textSize="16sp"            />        <!--inputType="number"表明只能输入数值-->        <EditText            androrid:layout_width="match_parent"            androrid:layout_height="wrap_content"            androrid:inputType="number"            />    </TableRow>    <TableRow>        <TextView            androrid:layout_width="match_parent"            androrid:layout_height="wrap_content"            androrid:text="生日"            androrid:textSize="16sp"            />        <!--inputType="date"表明日期输入框-->        <EditText            androrid:layout_width="match_parent"            androrid:layout_height="wrap_content"            androrid:inputType="date"            />    </TableRow>    <TableRow>        <TextView            androrid:layout_width="match_parent"            androrid:layout_height="wrap_content"            androrid:hint="请填写您的电话号码"            androrid:text="电话号码"            androrid:textSize="16sp"            />        <!--inputType="phone"表明只能输入数值-->        <EditText            androrid:layout_width="match_parent"            androrid:layout_height="wrap_content"            androrid:selectAllOnFocus="true"            androrid:inputType="phone"            />    </TableRow>    <Button        androrid:layout_width="wrap_content"        androrid:layout_height="wrap_content"        androrid:text="注册"        /></TableLayout>