Question

我正在尝试将 action buttons 添加到我的 shedule 应用

源代码

import React, { Component } from 'react';
import {
  Text,
  View,
  StyleSheet
} from 'react-native';
import {Agenda} from 'react-native-calendars';

import ActionButton from 'react-native-action-button';
import Icon from 'react-native-vector-icons/Ionicons';

export default class AgendaScreen extends Component {
  constructor(props) {
    super(props);
    this.state = {
      items: {}
    };
  }

  render() {
    return (
      <Agenda
        items={this.state.items}
        loadItemsForMonth={this.loadItems.bind(this)}
        selected={'2017-05-16'}
        renderItem={this.renderItem.bind(this)}
        renderEmptyDate={this.renderEmptyDate.bind(this)}
        rowHasChanged={this.rowHasChanged.bind(this)}

      />
      <View style={{flex:1, backgroundColor: '#f3f3f3'}}>
        {/* Rest of the app comes ABOVE the action button component !*/}
        <ActionButton buttonColor="rgba(231,76,60,1)">
          <ActionButton.Item buttonColor='#9b59b6' title="Create Shedule" onPress={() => console.log("Create Shedule!")}>
            <Icon name="md-create" style={styles.actionButtonIcon} />
          </ActionButton.Item>
          <ActionButton.Item buttonColor='#3498db' title="Notifications" onPress={() => {}}>
            <Icon name="md-notifications-off" style={styles.actionButtonIcon} />
          </ActionButton.Item>
          <ActionButton.Item buttonColor='#1abc9c' title="All Tasks" onPress={() => {}}>
            <Icon name="md-done-all" style={styles.actionButtonIcon} />
          </ActionButton.Item>
        </ActionButton>
      </View>
    );
  this.confirmDate = this.confirmDate.bind(this);
  this.openCalendar = this.openCalendar.bind(this);
  }

  loadItems(day) {
    setTimeout(() => {
      for (let i = -15; i < 85; i++) {
        const time = day.timestamp + i * 24 * 60 * 60 * 1000;
        const strTime = this.timeToString(time);
        if (!this.state.items[strTime]) {
          this.state.items[strTime] = [];
          const numItems = Math.floor(Math.random() * 5);
          for (let j = 0; j < numItems; j++) {
            this.state.items[strTime].push({
              name: 'Item for ' + strTime,
              height: Math.max(50, Math.floor(Math.random() * 150))
            });
          }
        }
      }
      //console.log(this.state.items);
      const newItems = {};
      Object.keys(this.state.items).forEach(key => {newItems[key] = this.state.items[key];});
      this.setState({
        items: newItems
      });
    }, 1000);
    // console.log(`Load Items for ${day.year}-${day.month}`);
  }

  renderItem(item) {
    return (
      <View style={[styles.item, {height: item.height}]}><Text>{item.name}</Text></View>
    );
  }

  renderEmptyDate() {
    return (
      <View style={styles.emptyDate}><Text>This is empty date!</Text></View>
    );
  }

  rowHasChanged(r1, r2) {
    return r1.name !== r2.name;
  }

  timeToString(time) {
    const date = new Date(time);
    return date.toISOString().split('T')[0];
  }
}

const styles = StyleSheet.create({
  item: {
    backgroundColor: 'white',
    flex: 1,
    borderRadius: 5,
    padding: 10,
    marginRight: 10,
    marginTop: 17
  },
  emptyDate: {
    height: 15,
    flex:1,
    paddingTop: 30
  }
}

actionButtonIcon: {
    fontSize: 20,
    height: 22,
    color: 'white',
  },);

这是我的操作按钮源代码（也包含在上面代码）

import React, { Component } from 'react';

import ActionButton from 'react-native-action-button';
import Icon from 'react-native-vector-icons/Ionicons';
import { StyleSheet, Text, View } from 'react-native';





export default function App() {
  return (
   <View style={{flex:1, backgroundColor: '#f3f3f3'}}>
        {/* Rest of the app comes ABOVE the action button component !*/}
        <ActionButton buttonColor="rgba(231,76,60,1)">
          <ActionButton.Item buttonColor='#9b59b6' title="Create Shedule" onPress={() => console.log("Create Shedule!")}>
            <Icon name="md-create" style={styles.actionButtonIcon} />
          </ActionButton.Item>
          <ActionButton.Item buttonColor='#3498db' title="Notifications" onPress={() => {}}>
            <Icon name="md-notifications-off" style={styles.actionButtonIcon} />
          </ActionButton.Item>
          <ActionButton.Item buttonColor='#1abc9c' title="All Tasks" onPress={() => {}}>
            <Icon name="md-done-all" style={styles.actionButtonIcon} />
          </ActionButton.Item>
        </ActionButton>
      </View>
    );
  }



const styles = StyleSheet.create({
  actionButtonIcon: {
    fontSize: 20,
    height: 22,
    color: 'white',
  },
});

这是我遇到的错误

这就是它的外观

从here中可以获取日历，这就是action button 我尝试添加操作按钮，但始终收到上述错误你能帮我解决这个问题吗？

＃

Answer 1

您可以尝试将Agenda和View组件包装在片段标签中。

<>
    <Agenda />
    <View />
</>

应该可以

空标签是<React.Fragment>

的快捷方式

Answer 2

根据react jsx体系结构，所有内容都必须包装在父jsx元素中。所以你的情况并且没有父标记，因此可以将其包装在a或<>周围。像下面的

<>

或

希望有帮助。如有疑问，请放心。

相邻的JSX元素必须包装在React Native的封闭中

2 个答案: