feat: chat优化
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c1a382474f
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@ -9,10 +9,10 @@ import { router, useLocalSearchParams } from "expo-router";
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import React, { useCallback, useEffect, useRef, useState } from 'react';
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import {
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Animated,
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FlatList,
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Keyboard,
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KeyboardAvoidingView,
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Platform,
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ScrollView,
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StyleSheet,
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TextInput,
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TouchableOpacity,
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@ -23,14 +23,11 @@ import { useSafeAreaInsets } from "react-native-safe-area-context";
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export default function AskScreen() {
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const insets = useSafeAreaInsets();
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// 在组件内部添加 ref
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const scrollViewRef = useRef<ScrollView>(null);
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const chatListRef = useRef<FlatList>(null);
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const [isHello, setIsHello] = useState(true);
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const [conversationId, setConversationId] = useState<string | null>(null);
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const [userMessages, setUserMessages] = useState<Message[]>([]);
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// 选择图片
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const [selectedImages, setSelectedImages] = useState<string[]>([]);
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// 动画值
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const fadeAnim = useRef(new Animated.Value(1)).current;
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const fadeAnimChat = useRef(new Animated.Value(0)).current;
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@ -39,24 +36,27 @@ export default function AskScreen() {
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newSession: string;
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}>();
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// 处理滚动到底部 - 优化版本
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const scrollToBottom = useCallback((animated = true) => {
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if (scrollViewRef.current && !isHello) {
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// 使用更长的延迟确保内容渲染完成
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setTimeout(() => {
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scrollViewRef.current?.scrollToEnd({ animated });
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}, 150);
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// 创建一个可复用的滚动函数
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const scrollToEnd = useCallback((animated = true) => {
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if (chatListRef.current) {
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setTimeout(() => chatListRef.current?.scrollToEnd({ animated }), 100);
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}
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}, [isHello]);
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}, []);
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useEffect(() => {
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if (!isHello && userMessages.length > 0) {
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scrollToEnd();
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}
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}, [userMessages, isHello, scrollToEnd]);
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// 监听键盘显示/隐藏事件 - 增强版本
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useEffect(() => {
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const keyboardDidShowListener = Keyboard.addListener(
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'keyboardDidShow',
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(e) => {
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// 键盘显示时滚动到底部
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setTimeout(() => {
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scrollToBottom(true);
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if (!isHello) {
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scrollToEnd();
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}
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}, 100);
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}
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);
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@ -64,9 +64,10 @@ export default function AskScreen() {
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const keyboardDidHideListener = Keyboard.addListener(
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'keyboardDidHide',
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() => {
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// 键盘隐藏时也滚动到底部（可选）
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setTimeout(() => {
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scrollToBottom(false);
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if (!isHello) {
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scrollToEnd(false);
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}
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}, 100);
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}
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);
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@ -75,20 +76,8 @@ export default function AskScreen() {
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keyboardDidShowListener.remove();
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keyboardDidHideListener.remove();
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};
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}, [scrollToBottom]);
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}, [isHello]);
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// 处理消息变化时滚动 - 优化版本
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useEffect(() => {
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if (!isHello && userMessages.length > 0) {
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// 消息变化时立即滚动到底部
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const timer = setTimeout(() => {
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scrollToBottom(true);
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}, 50);
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return () => clearTimeout(timer);
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}
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}, [userMessages.length, isHello, scrollToBottom]);
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// 处理路由参数 - 优化版本
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useEffect(() => {
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if (sessionId) {
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setConversationId(sessionId);
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@ -103,10 +92,8 @@ export default function AskScreen() {
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}
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}, [sessionId, newSession]);
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// 动画效果
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useEffect(() => {
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if (isHello) {
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// 显示欢迎页，隐藏聊天页
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Animated.parallel([
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Animated.timing(fadeAnim, {
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toValue: 1,
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@ -120,7 +107,6 @@ export default function AskScreen() {
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})
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]).start();
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} else {
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// 显示聊天页，隐藏欢迎页
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Animated.parallel([
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Animated.timing(fadeAnim, {
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toValue: 0,
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@ -133,31 +119,27 @@ export default function AskScreen() {
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useNativeDriver: true,
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})
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]).start(() => {
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// 动画完成后滚动到底部
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setTimeout(() => {
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scrollToBottom(false);
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if (!isHello) {
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scrollToEnd(false);
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}
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}, 50);
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});
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}
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}, [isHello, fadeAnim, fadeAnimChat, scrollToBottom]);
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}, [isHello, fadeAnim, fadeAnimChat]);
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// 页面进入时的处理 - 新增
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useEffect(() => {
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if (!isHello) {
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// 页面完全加载后滚动到底部
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const timer = setTimeout(() => {
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scrollToBottom(false);
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scrollToEnd(false);
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}, 300);
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return () => clearTimeout(timer);
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}
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}, [isHello, scrollToBottom]);
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}, [isHello]);
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// 新增：页面获得焦点时处理
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useEffect(() => {
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// 页面进入时确保键盘关闭并滚动到底部
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const timer = setTimeout(() => {
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if (!isHello) {
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// 让所有输入框失去焦点
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try {
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if (TextInput.State?.currentlyFocusedInput) {
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const input = TextInput.State.currentlyFocusedInput();
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@ -167,13 +149,12 @@ export default function AskScreen() {
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console.log('失去焦点失败:', error);
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}
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// 滚动到底部
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scrollToBottom(false);
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scrollToEnd(false);
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}
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}, 200);
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return () => clearTimeout(timer);
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}, [isHello, scrollToBottom]);
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}, [isHello]);
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return (
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<View style={[styles.container, { paddingTop: insets.top }]}>
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@ -182,7 +163,6 @@ export default function AskScreen() {
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<TouchableOpacity
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style={styles.backButton}
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onPress={() => {
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// 确保关闭键盘
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try {
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if (TextInput.State?.currentlyFocusedInput) {
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const input = TextInput.State.currentlyFocusedInput();
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@ -201,64 +181,56 @@ export default function AskScreen() {
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<View style={styles.placeholder} />
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</View>
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<View style={styles.contentContainer}>
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{/* 欢迎页面 */}
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<Animated.View
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style={[
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styles.absoluteView,
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{
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opacity: fadeAnim,
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pointerEvents: isHello ? 'auto' : 'none',
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zIndex: 1
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}
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]}
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>
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<AskHello />
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</Animated.View>
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{/* 聊天页面 */}
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<Animated.View
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style={[
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styles.absoluteView,
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{
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opacity: fadeAnimChat,
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pointerEvents: isHello ? 'none' : 'auto',
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zIndex: 0
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}
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]}
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>
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<Chat
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ref={chatListRef}
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userMessages={userMessages}
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sessionId={sessionId}
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setSelectedImages={setSelectedImages}
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selectedImages={selectedImages}
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style={styles.chatContainer}
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contentContainerStyle={styles.chatContentContainer}
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showsVerticalScrollIndicator={false}
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onContentSizeChange={() => scrollToEnd()}
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/>
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</Animated.View>
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</View>
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{/* 输入框区域 */}
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<KeyboardAvoidingView
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style={styles.keyboardAvoidingView}
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behavior={Platform.OS === "ios" ? "padding" : "height"}
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enabled={!isHello}
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>
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<View style={styles.contentContainer}>
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{/* 欢迎页面 */}
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<Animated.View
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style={[
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styles.absoluteView,
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{
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opacity: fadeAnim,
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// 使用 pointerEvents 控制交互
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pointerEvents: isHello ? 'auto' : 'none',
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zIndex: 1
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}
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]}
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>
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<AskHello />
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</Animated.View>
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{/* 聊天页面 */}
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<Animated.View
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style={[
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styles.absoluteView,
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{
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opacity: fadeAnimChat,
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pointerEvents: isHello ? 'none' : 'auto',
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zIndex: 0
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}
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]}
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>
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<ScrollView
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ref={scrollViewRef}
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style={styles.chatContainer}
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contentContainerStyle={styles.chatContentContainer}
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keyboardDismissMode="interactive"
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keyboardShouldPersistTaps="handled"
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showsVerticalScrollIndicator={false}
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onContentSizeChange={() => scrollToBottom(true)}
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>
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<Chat
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userMessages={userMessages}
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sessionId={sessionId}
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setSelectedImages={setSelectedImages}
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selectedImages={selectedImages}
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/>
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</ScrollView>
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</Animated.View>
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</View>
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{/* 输入框 */}
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keyboardVerticalOffset={0} >
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<View style={styles.inputContainer} key={conversationId}>
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<SendMessage
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setIsHello={setIsHello}
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setUserMessages={setUserMessages}
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setConversationId={setConversationId}
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conversationId={conversationId}
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setConversationId={setConversationId}
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setUserMessages={setUserMessages}
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selectedImages={selectedImages}
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setSelectedImages={setSelectedImages}
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/>
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@ -271,7 +243,7 @@ export default function AskScreen() {
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const styles = StyleSheet.create({
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container: {
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flex: 1,
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backgroundColor: 'white',
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backgroundColor: '#f8f8f8',
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},
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navbar: {
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flexDirection: 'row',
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@ -280,10 +252,8 @@ const styles = StyleSheet.create({
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paddingVertical: 16,
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paddingHorizontal: 16,
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backgroundColor: 'white',
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// 使用 border 替代阴影
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borderBottomWidth: 1,
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borderBottomColor: 'rgba(0,0,0,0.1)',
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// 如果需要更柔和的边缘，可以添加一个微妙的阴影
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elevation: 1, // Android
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shadowColor: '#000',
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shadowOffset: { width: 0, height: 1 },
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@ -307,13 +277,9 @@ const styles = StyleSheet.create({
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placeholder: {
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width: 40,
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},
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// 更新 keyboardAvoidingView 和 contentContainer 样式
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keyboardAvoidingView: {
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flex: 1,
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},
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contentContainer: {
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flex: 1,
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justifyContent: 'center',
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position: 'relative',
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},
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absoluteView: {
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position: 'absolute',
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@ -1,76 +1,55 @@
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import { Message, Video } from '@/types/ask';
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import { MaterialItem } from '@/types/personal-info';
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import React, { Dispatch, memo, SetStateAction, useCallback, useEffect, useMemo, useRef, useState } from 'react';
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import React, { Dispatch, ForwardedRef, forwardRef, memo, SetStateAction, useCallback, useMemo, useState } from 'react';
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import { useTranslation } from 'react-i18next';
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import {
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FlatList,
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FlatListProps,
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SafeAreaView
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} from 'react-native';
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import { useSafeAreaInsets } from 'react-native-safe-area-context';
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import MessageItem from './aiChat';
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interface ChatProps {
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// 继承 FlatListProps 来接收所有 FlatList 的属性
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interface ChatProps extends Omit<FlatListProps<Message>, 'data' | 'renderItem'> {
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userMessages: Message[];
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sessionId: string;
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setSelectedImages: Dispatch<SetStateAction<string[]>>;
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selectedImages: string[];
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}
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function ChatComponent({ userMessages, sessionId, setSelectedImages, selectedImages }: ChatProps) {
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const flatListRef = useRef<FlatList>(null);
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function ChatComponent(
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{ userMessages, sessionId, setSelectedImages, selectedImages, ...restProps }: ChatProps,
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ref: ForwardedRef<FlatList<Message>>
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) {
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const insets = useSafeAreaInsets();
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const [modalVisible, setModalVisible] = React.useState({ visible: false, data: {} as Video | MaterialItem });
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const { t } = useTranslation();
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// 使用 useCallback 缓存 keyExtractor 函数
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const keyExtractor = useCallback((item: Message) => `${item.role}-${item.timestamp}`, []);
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// 使用 useMemo 缓存样式对象
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const contentContainerStyle = useMemo(() => ({ padding: 16 }), []);
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const contentContainerStyle = useMemo(() => ({ padding: 16, flexGrow: 1 }), []);
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// 详情弹窗
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const [modalDetailsVisible, setModalDetailsVisible] = useState<boolean>(false);
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// 自动滚动到底部
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useEffect(() => {
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if (userMessages.length > 0) {
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// 延迟滚动以确保渲染完成
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const timer = setTimeout(() => {
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flatListRef.current?.scrollToEnd({ animated: true });
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}, 150);
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return () => clearTimeout(timer);
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}
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}, [userMessages]);
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// 优化 FlatList 性能 - 提供 getItemLayout 方法
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const getItemLayout = useCallback((data: Message[] | null | undefined, index: number) => {
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// 假设每个消息项的高度大约为 100（可根据实际情况调整）
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const averageItemHeight = 100;
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return {
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length: averageItemHeight,
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offset: averageItemHeight * index,
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index,
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};
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}, []);
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return (
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<SafeAreaView className='flex-1'>
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<SafeAreaView style={{ flex: 1 }}>
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<FlatList
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ref={flatListRef}
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ref={ref}
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data={userMessages}
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keyExtractor={keyExtractor}
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renderItem={({ item }) => MessageItem({ t, setSelectedImages, selectedImages, insets, item, sessionId, modalVisible, setModalVisible, setModalDetailsVisible, modalDetailsVisible })}
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contentContainerStyle={contentContainerStyle}
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keyboardDismissMode="interactive"
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keyboardShouldPersistTaps="handled"
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removeClippedSubviews={true}
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maxToRenderPerBatch={10}
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updateCellsBatchingPeriod={50}
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initialNumToRender={10}
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windowSize={11}
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getItemLayout={getItemLayout}
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renderItem={({ item }) => MessageItem({ t, setSelectedImages, selectedImages, insets, item, sessionId, modalVisible, setModalVisible, setModalDetailsVisible, modalDetailsVisible })}
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{...restProps} // 将所有其他属性传递给 FlatList
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/>
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</SafeAreaView>
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);
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}
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// 使用 React.memo 包装组件，避免不必要的重渲染
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export default memo(ChatComponent);
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export default memo(forwardRef(ChatComponent));
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