新增功能

TUICallKit-Vue3/TUIKit/pages/chat/chat.vue

@@ -241,6 +241,8 @@
 	import groupPlugin from '@tencentcloud/lite-chat/plugins/group';
 import * as GenerateTestUserSig from "@/debug/GenerateTestUserSig-es.js";
 import { TUICallKitAPI } from '@/TUICallKit/src/TUICallService/index';
+import { TUIStore } from '@/TUICallKit/src/TUICallService/CallService/index';
+import { StoreName, NAME, CallStatus } from '@/TUICallKit/src/TUICallService/const/index';
 // CallManager 在 App.vue 已挂载到 uni.CallManager，勿在此重复 new，否则会丢失通话状态
 const { proxy } = getCurrentInstance()
 	const messages = ref([]);
@@ -271,6 +273,10 @@ const { proxy } = getCurrentInstance()
 	let targetUserID = '';
 	let currentUserID = ''; // 当前登录用户ID
 	let scrollTimer = null; // 滚动定时器
+	/** 微信小程序：从系统后台回前台时刷新 IM/TUICall，避免无法接通视频 */
+	let unsubscribeWxAppShow = null;
+	let allowChatForegroundRelogin = false;
+	let foregroundReloginTimer = null;
 	
 	const CONFIRMATION_MESSAGE = `我已确认以下信息:
 1、本人确认已在线下确诊;
@@ -730,6 +736,22 @@ const { proxy } = getCurrentInstance()
 			uni.$on('TUICall:callEnd', onVideoCallEnd);
 			//uni.showToast({ title: '聊天已就绪', icon: 'success' });
 			
+			// #ifdef MP-WEIXIN
+			// 系统级前后台切换时页面 onShow 不一定等价于「回前台」，用 wx.onAppShow 刷新音视频信令链路
+			if (typeof wx !== 'undefined' && wx.onAppShow) {
+				unsubscribeWxAppShow = wx.onAppShow(() => {
+					if (!allowChatForegroundRelogin) return;
+					const pages = getCurrentPages();
+					const top = pages[pages.length - 1];
+					if (!(top?.route || '').includes('pages/chat/chat')) return;
+					reloginAfterMiniProgramForeground();
+				});
+			}
+			setTimeout(() => {
+				allowChatForegroundRelogin = true;
+			}, 800);
+			// #endif
+			
 			// 监听键盘高度变化
 			uni.onKeyboardHeightChange((res) => {
 				keyboardHeight.value = res.height;
@@ -765,6 +787,17 @@ const { proxy } = getCurrentInstance()
 	});
 	
 	onUnload(() => {
+		allowChatForegroundRelogin = false;
+		// #ifdef MP-WEIXIN
+		if (typeof unsubscribeWxAppShow === 'function') {
+			unsubscribeWxAppShow();
+			unsubscribeWxAppShow = null;
+		}
+		// #endif
+		if (foregroundReloginTimer) {
+			clearTimeout(foregroundReloginTimer);
+			foregroundReloginTimer = null;
+		}
 		uni.$off('TUICall:callStart', onVideoCallStart);
 		uni.$off('TUICall:callEnd', onVideoCallEnd);
 		stopDoctorWaitTimer();
@@ -1039,6 +1072,26 @@ const { proxy } = getCurrentInstance()
 		chat.on(TencentCloudChat.EVENT.MESSAGE_RECEIVED, onMessageReceived);
 		await initTUICallKitWithTim(chat);
 	}
+
+	/** 小程序切后台再回前台：拉取新 UserSig 并重登 IM、重绑 TUICallEngine（与发消息失败时的 relogin 一致） */
+	async function reloginAfterMiniProgramForeground() {
+		if (!chat || !currentUserID) return;
+		if (foregroundReloginTimer) clearTimeout(foregroundReloginTimer);
+		foregroundReloginTimer = setTimeout(async () => {
+			foregroundReloginTimer = null;
+			// reloginIMChat 会先 IM logout 再 initTUICallKit；若非 IDLE，destroyed 会失败且 IM 已断开，故仅 IDLE 时刷新
+			try {
+				const status = TUIStore?.getData?.(StoreName.CALL, NAME.CALL_STATUS);
+				if (status != null && status !== CallStatus.IDLE) {
+					console.warn('前台恢复: 通话未结束，跳过 IM/TUICall 重绑');
+					return;
+				}
+				await reloginIMChat();
+			} catch (e) {
+				console.warn('前台恢复后 IM/TUICall 刷新失败:', e);
+			}
+		}, 400);
+	}
 	
 	async function sendTextMessage() {
 		if (!inputText.value.trim()) return;
@@ -1353,7 +1406,7 @@ const { proxy } = getCurrentInstance()
 		hideDoctorCardByCall();
 	}
 	
-	function onVideoCallEnd() {
+	async function onVideoCallEnd() {
 		hideDoctorCardByCall();
 		uni.showToast({ title: '视频通话已结束', icon: 'success' });
 	}