antd-mobile表单的“基本”示例和“错误验证”示例，代码如下：https://mobile.ant.design/com...

1、“基本”示例

import { List, InputItem, WhiteSpace } from 'antd-mobile';
import { createForm } from 'rc-form';

class BasicInputExample extends React.Component {
  componentDidMount() {
    // this.autoFocusInst.focus();
  }
  handleClick = () => {
    this.inputRef.focus();
  }
  render() {
    const { getFieldProps } = this.props.form;
    return (
      <div>
        <List renderHeader={() => 'Customize to focus'}>
          <InputItem
            {...getFieldProps('autofocus')}
            clear
            placeholder="auto focus"
            ref={el => this.autoFocusInst = el}
          >标题</InputItem>
          <InputItem
            {...getFieldProps('focus')}
            clear
            placeholder="click the button below to focus"
            ref={el => this.inputRef = el}
          >标题</InputItem>
          <List.Item>
            <div
              style={{ width: '100%', color: '#108ee9', textAlign: 'center' }}
              onClick={this.handleClick}
            >
              click to focus
            </div>
          </List.Item>
        </List>

        <List renderHeader={() => 'Whether is controlled'}>
          <InputItem
            {...getFieldProps('control')}
            placeholder="controled input"
          >受控组件</InputItem>
          <InputItem
            defaultValue="Title"
            placeholder="please input content"
            data-seed="logId"
          >非受控组件</InputItem>
        </List>

        <WhiteSpace />

        <List renderHeader={() => 'Click label to focus input'}>
          <InputItem
            placeholder="click label to focus input"
            ref={el => this.labelFocusInst = el}
          ><div onClick={() => this.labelFocusInst.focus()}>标题</div></InputItem>
        </List>

        <List renderHeader={() => 'Show clear'}>
          <InputItem
            {...getFieldProps('inputclear')}
            clear
            placeholder="displayed clear while typing"
          >标题</InputItem>
        </List>

        <WhiteSpace />

        <List renderHeader={() => 'Number of words for title'}>
          <InputItem
            {...getFieldProps('label8')}
            placeholder="limited title length"
            labelNumber={5}
          >标题过长超过默认的5个字</InputItem>
        </List>

        <WhiteSpace />

        <List renderHeader={() => 'Custom title（text / image / empty)'}>
          <InputItem
            {...getFieldProps('input3')}
            placeholder="no label"
          />
          <InputItem
            {...getFieldProps('inputtitle2')}
            placeholder="title can be icon，image or text"
          >
            <div style={{ backgroundImage: 'url(https://zos.alipayobjects.com/rmsportal/DfkJHaJGgMghpXdqNaKF.png)', backgroundSize: 'cover', height: '22px', width: '22px' }} />
          </InputItem>
        </List>

        <WhiteSpace />

        <List renderHeader={() => 'Customize the extra content in the right'}>
          <InputItem
            {...getFieldProps('preice')}
            placeholder="0.00"
            extra="¥"
          >价格</InputItem>
        </List>

        <WhiteSpace />
        <List renderHeader={() => 'Format'}>
          <InputItem
            {...getFieldProps('bankCard', {
              initialValue: '8888 8888 8888 8888',
            })}
            type="bankCard"
          >银行卡</InputItem>
          <InputItem
            {...getFieldProps('phone')}
            type="phone"
            placeholder="186 1234 1234"
          >手机号码</InputItem>
          <InputItem
            {...getFieldProps('password')}
            type="password"
            placeholder="****"
          >密码</InputItem>
          <InputItem
            {...getFieldProps('number')}
            type="number"
            placeholder="click to show number keyboard"
          >数字键盘</InputItem>
          <InputItem
            {...getFieldProps('digit')}
            type="digit"
            placeholder="click to show native number keyboard"
          >数字键盘</InputItem>
        </List>

        <WhiteSpace />

        <List renderHeader={() => 'Not editable / Disabled'}>
          <InputItem
            value="not editable"
            editable={false}
          >姓名</InputItem>
          <InputItem
            value="style of disabled `InputItem`"
            disabled
          >姓名</InputItem>
        </List>
      </div>
    );
  }
}

const BasicInputExampleWrapper = createForm()(BasicInputExample);
ReactDOM.render(<BasicInputExampleWrapper />, mountNode);

2、“错误验证”示例

import { List, InputItem, Toast } from 'antd-mobile';

class ErrorInputExample extends React.Component {
  state = {
    hasError: false,
    value: '',
  }
  onErrorClick = () => {
    if (this.state.hasError) {
      Toast.info('Please enter 11 digits');
    }
  }
  onChange = (value) => {
    if (value.replace(/\s/g, '').length < 11) {
      this.setState({
        hasError: true,
      });
    } else {
      this.setState({
        hasError: false,
      });
    }
    this.setState({
      value,
    });
  }
  render() {
    return (
      <div>
        <List renderHeader={() => 'Confirm when typing'}>
          <InputItem
            type="phone"
            placeholder="input your phone"
            error={this.state.hasError}
            onErrorClick={this.onErrorClick}
            onChange={this.onChange}
            value={this.state.value}
          >手机号码</InputItem>
        </List>
      </div>
    );
  }
}

ReactDOM.render(<ErrorInputExample />, mountNode);

问题：
1、“基本”示例使用了rc-form，“错误验证”示例没有使用rc-form，那么rc-form的使用场景是什么？
2、getFieldProps()怎么使用，代码中都是{...getFieldProps('control')}这样使用的，意思就是这个函数返回一个对象，那么这个对象里面究竟是什么内容？