单击按钮或单选按钮时如何显示组件

Question

 import React, { Component } from 'react'; class ImageStyle extends Component { constructor(props) { super(props); this.state = { title: '', url: '', summary: '' }; this.handleInputChange = this.handleInputChange.bind(this); } handleInputChange(event) { this.setState({ [event.target.name]: event.target.value }); } render() { return ( <div> <div> <h1 className="row px-2">Image Style Notification</h1> <hr /> <div className="row px-1 py-2 animated fadeIn"> <div className="px-1" style={{ width:50 + '%' }}><br /> <div className="mb-1"> <input type="text" className="form-control" placeholder="Title" name="title" value={this.state.title} onChange={this.handleInputChange} /> </div> <div className="mb-1"> <textarea className="form-control" placeholder="Image URL" name="url" value={this.state.url} onChange={this.handleInputChange} /> </div> <div className="mb-1"> <textarea className="form-control" placeholder="Summary" name="summary" value={this.state.summary} onChange={this.handleInputChange} /> </div> <br /> <div className="row px-2" > <div> <button className="nav-link btn btn-block btn-info" onClick={this.handleClick} >Save</button> </div> <div className="px-1"> <button className="nav-link btn btn-block btn-danger"> Cancel</button> </div> </div><br /> </div> <div><br /> <div className="android"> <table className="table table-clear android-width"> <tbody> <tr> <td> <img src={this.state.url} alt="Notification Image" className="img-width-android"/> </td> <td className="img-text-css"> <h4><strong> {this.state.title} </strong></h4><br /><br /><br /><br /> {this.state.summary}<br /> </td> </tr> </tbody> </table> </div> <div className="mobile"> <table className="table table-clear img-css"> <tbody> <tr> <td> <img src={this.state.url} alt="Notification Image" className="img-width-css"/> </td> <td className="img-text-css"> <h4><strong> {this.state.title} </strong></h4><br /><br /><br /><br /> {this.state.summary}<br /> </td> </tr> </tbody> </table> </div> </div> </div> </div> </div> ) } } export default ImageStyle; 

我已经使两个组件分别显示为android和IOS，而我的css被添加为android和ios的android现在，我要添加的是名为IOS和Android的按钮或单选按钮，并单击按钮相关的组件是仅显示

Answer 1

您可以为这两种布局创建单独的组件，然后创建单选按钮，您将保持状态的整个值，并有条件地渲染正确的组件。

checkRadio =(e) =>{
  if(e.target.checked) {
    this.setState({layout: e.target.value});
  }
}

render() {

        return ( 
          <div>
            <div>
              <h1 className="row px-2">Image Style Notification</h1>
              <hr />
              <div className="row px-1 py-2 animated fadeIn">

                    <div className="px-1" style={{ width:50 + '%' }}><br />

                        <div className="mb-1">
                          <input type="text"
                           className="form-control" 
                           placeholder="Title"
                           name="title"
                           value={this.state.title}
                           onChange={this.handleInputChange}
                           />
                        </div>

                        <div className="mb-1">
                          <textarea 
                          className="form-control" 
                          placeholder="Image URL"
                          name="url"
                          value={this.state.url}
                           onChange={this.handleInputChange}
                          />
                        </div>

                        <div className="mb-1">
                          <textarea
                           className="form-control" 
                           placeholder="Summary"
                           name="summary"
                           value={this.state.summary}
                           onChange={this.handleInputChange}
                           />
                        </div>

                        <br />

                        <div className="row px-2" >
                          <div>
                            <button className="nav-link btn btn-block btn-info"  onClick={this.handleClick} >Save</button>
                          </div>
                          <div className="px-1">
                            <button className="nav-link btn btn-block btn-danger"> Cancel</button>
                          </div>
                        </div><br />

                    </div>
                    <div><br />
                      <input type="radio" name="layout" value="mobile" onChange={this.checkRadio}/>
                      <input type="radio" name="layout" value="android" onChange={this.checkRadio}/>
                      {(this.state.layout === "mobile")? <Android url={this.state.url} summary={this.props.summary} title={this.state.title}/>: <Mobile url={this.state.url} summary={this.props.summary} title={this.state.title}/>}





                    </div>
              </div>
        </div>
        </div>
        )

      }


    class Android extends React.Component {
       constructor(props) {
           super(props);
        }

        render() {
            return (
                 <div className="android">
                          <table className="table table-clear android-width">
                          <tbody>
                            <tr>
                              <td>
                                <img src={this.props.url} alt="Notification Image" className="img-width-android"/>
                              </td>
                              <td className="img-text-css">
                                <h4><strong>
                                  {this.props.title}
                                </strong></h4><br /><br /><br /><br />
                               {this.props.summary}<br /> 
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
            )
        }
    }


    class Mobile extends React.Component {
       constructor(props) {
           super(props);
        }

        render() {
            return (
                <div className="mobile">
                          <table className="table table-clear img-css">
                          <tbody>
                            <tr>
                              <td>
                              <img src={this.props.url} alt="Notification Image" className="img-width-css"/>
                                </td>
                              <td className="img-text-css">
                                <h4><strong>
                                  {this.props.title}
                                </strong></h4><br /><br /><br /><br />
                               {this.props.summary}<br /> 
                              </td>
                            </tr>
                          </tbody>
                        </table>
                      </div>
            )
        }
    }