为什么 Material-UI Appbar onLeftIconButtonTouchTap 不起作用? [英] Why Material-UI Appbar onLeftIconButtonTouchTap is not work?

问题描述

我正在学习 React-Redux、Material-UI.
现在，我正在尝试创建示例应用程序，但不起作用.
我不知道如何改进我的代码.
我想打开 Drawer ，当 Material-UI AppBar onLeftIconButtonTouchTap 被点击时.
我想我无法将我的 Action 绑定到组件.
当以下代码运行时，不会触发 onLeftIconButtonTouchTap 事件.
当我将 openDrawer 更改为 openDrawer() 时，在 Chrome 开发工具上发现了 JS 错误openDrawer 不是函数".

Header.jsx 作为组件

import React, { PropTypes } from 'react';从 'material-ui/AppBar' 导入 AppBar；从'material-ui/Drawer'导入抽屉；常量标题 = ({打开抽屉，打开}) =>(<div><应用栏标题='样本'onLeftIconButtonTouchTap = {() =>打开抽屉}/><抽屉停靠={假}打开={打开}/>

)Header.PropTypes = {openDrawer: PropTypes.func.isRequired,打开:PropTypes.bool.isRequired}导出默认标题；

HeaderContainer.jsx 作为容器

从'react'导入React；从redux"导入 { bindActionCreators }从'react-redux'导入{连接}；从'../actions'导入{标题}从'../components/Header'导入标题；const mapStateToProps = (状态) =>({打开});const mapDispatchToProps = (dispatch) =>({openDrawer: bindActionCreators(header, dispatch)});const HeaderContainer = 连接(mapStateToProps，mapDispatchToProps)(标题);导出默认的 HeaderContainer；

App.jsx 作为 RootComponent

import React, { Component, PropTypes } from 'react';从'../components/Header'导入标题；从react-tap-event-plugin"导入injectTapEventPlugin；从'material-ui/styles/baseThemes/lightBaseTheme'导入baseTheme；从'material-ui/styles/getMuiTheme'导入getMuiTheme；注入TapEventPlugin();类 App 扩展组件 {构造函数(道具){超级(道具)；}getChildContext() {返回 { muiTheme: getMuiTheme(baseTheme) };}使成为() {返回 (<div><标题/>{this.props.children}

);}};App.childContextTypes = {muiTheme:React.PropTypes.object.isRequired，};导出默认应用程序；

提前致谢.

解决方案

您没有正确绑定函数.您需要将代码更新为

在此处详细了解 .bind() 方法:使用JavaScript 'bind' 方法

Im studying React-Redux, Material-UI.
Now, Im trying to create Sample App, but not work.
I dont know how to improve my code.
I want to open Drawer , when Material-UI AppBar onLeftIconButtonTouchTap is clicked.
I cant bind my Action to Component, I think.
When following code is running, not fire onLeftIconButtonTouchTap event.
And when I change openDrawer to openDrawer(), JS error 'openDrawer is not a function' is found on Chrome Dev tool.

Header.jsx as a Component

import React, { PropTypes } from 'react';
import AppBar from 'material-ui/AppBar';
import Drawer from 'material-ui/Drawer';

const Header = ({
  openDrawer,
  open
}) => (
  <div>
    <AppBar
      title='sample'
      onLeftIconButtonTouchTap = {() => openDrawer}
    />
    <Drawer 
      docked={false}
      open={open}
    />
  </div>
)

Header.PropTypes = {
  openDrawer: PropTypes.func.isRequired,
  open: PropTypes.bool.isRequired
}

export default Header;

HeaderContainer.jsx as a Container

import React from 'react';
import { bindActionCreators } from 'redux'
import { connect } from 'react-redux';

import { header } from '../actions'
import Header from '../components/Header';

const mapStateToProps = (state) => ({open});
const mapDispatchToProps = (dispatch) => (
  {openDrawer: bindActionCreators(header, dispatch)}
);

const HeaderContainer = connect(
  mapStateToProps,
  mapDispatchToProps
)(Header);

export default HeaderContainer;

App.jsx as a RootComponent

import React, { Component, PropTypes } from 'react';

import Header from '../components/Header';

import injectTapEventPlugin from "react-tap-event-plugin";

import baseTheme from 'material-ui/styles/baseThemes/lightBaseTheme';
import getMuiTheme from 'material-ui/styles/getMuiTheme';

injectTapEventPlugin();

class App extends Component {
  constructor(props) {
    super(props);
  }

 getChildContext() {
      return { muiTheme: getMuiTheme(baseTheme) };
  }

  render() {
    return (
      <div>
        <Header />
        {this.props.children}
      </div>
    );
  }
};

App.childContextTypes = {
    muiTheme: React.PropTypes.object.isRequired,
};

export default App;

Thanks in advance.

解决方案

You are not binding the function correctly. You need to update your code to

<AppBar
  title='sample'
  onLeftIconButtonTouchTap = { openDrawer.bind(this) }
/>

More about .bind() method here: Use of the JavaScript 'bind' method

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