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November 11, 2018 21:19
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| /** | |
| * Sample React Native App | |
| * https://github.com/facebook/react-native | |
| * | |
| * @format | |
| * @flow | |
| */ | |
| import React, {Component} from 'react'; | |
| import {Platform, StyleSheet,TouchableHighlight, Text,TextInput,FlatList,Keyboard, View,KeyboardAvoidingView} from 'react-native'; | |
| import ChatItem from './src/ChatItem' | |
| export default class App extends Component { | |
| constructor() | |
| { | |
| super(); | |
| this.state={ | |
| text:'', | |
| refresh:false, | |
| messages:[ | |
| { | |
| authorName:"asd", | |
| text: "hello" | |
| }, | |
| { | |
| authorName:"aaa", | |
| text: "azaaza" | |
| }, | |
| { | |
| authorName:'sdsds', | |
| text: "1234567891234567891234567891234567891234567891234567891234567891234567891234567899123456789123456789123456789123456789123456789123456789123456789.0" | |
| } | |
| ] | |
| } | |
| } | |
| _onSendData() | |
| { | |
| const messages = this.state.messages; | |
| const newMessage ={ | |
| text:this.state.text, | |
| authorName:"qqq" | |
| }; | |
| messages.unshift(newMessage); | |
| const refresh = !this.state.refresh | |
| this.setState({refresh}); | |
| this.textInput.clear(); | |
| Keyboard.dismiss(); | |
| } | |
| renderMessageItem({item}){ | |
| return <ChatItem message ={item}></ChatItem> | |
| } | |
| keyExtractor = (item,index)=> index.toString(); | |
| render() { | |
| return ( | |
| <View style={styles.container}> | |
| <FlatList | |
| data={this.state.messages} | |
| extraData={this.state.refresh} | |
| renderItem={this.renderMessageItem} | |
| keyExtractor={this.keyExtractor} | |
| inverted | |
| > | |
| </FlatList> | |
| <KeyboardAvoidingView > | |
| <View style={styles.inputLayout}> | |
| <TextInput | |
| style={styles.textBox} | |
| multiline | |
| onChangeText={(text)=>this.setState({text})} | |
| ref={input=>{this.textInput=input;}} | |
| > | |
| </TextInput> | |
| <TouchableHighlight | |
| underlayColor='#0066ff' | |
| style={styles.sendBtn} | |
| onPress={this._onSendData.bind(this)} | |
| > | |
| <Text>Send</Text> | |
| </TouchableHighlight> | |
| </View> | |
| </KeyboardAvoidingView> | |
| </View> | |
| ); | |
| } | |
| } | |
| const styles = StyleSheet.create({ | |
| container: { | |
| flex: 1 | |
| }, | |
| inputLayout: { | |
| flexDirection:'row', | |
| padding:10, | |
| justifyContent:'space-between' | |
| }, | |
| textBox: { | |
| flex: 1, | |
| borderColor:'black', | |
| borderWidth:1, | |
| borderRadius:5, | |
| fontSize:14, | |
| paddingHorizontal:10, | |
| paddingVertical:5 | |
| }, | |
| sendBtn: | |
| { | |
| justifyContent:'center', | |
| backgroundColor:'#66ccff', | |
| borderRadius:5, | |
| marginLeft: 10, | |
| paddingRight:15, | |
| paddingLeft:15 | |
| } | |
| }); |
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