changelog.md

+## 3.0.4（2024-05-09）
+- 优化 对于含有图片的消息数据，新增了图片的宽高值，使图片加载前可以固定容器高度，从而避免列表抖动
+- 优化 多个会话切换的草稿功能，提升性能消息输入的性能
+- 优化 消息列表滚动到底时，自动隐藏“有新消息”提示
+- 优化 微调“有新消息”提示的样式
+## 3.0.3（2024-05-08）
+- 修复 代码错误导致云端扩展框架缓存无效的问题
 ## 3.0.2（2024-05-08）
 - 修复 解决部分云厂商的uniCloud环境不支持写缓存文件引起的问题
 ## 3.0.1（2024-05-08）

components/uni-im-img/uni-im-img.vue

 <template>
-  <image @load="load" :src="url" :mode="mode" :style="{width,height}" @click="handleClick"></image>
+  <image @load="load" :src="url" :mode="mode" :style='{"width":viewWidth,"height":viewHeight}' @click="handleClick"></image>
 </template>
 
 <script>
@@ -16,15 +16,50 @@ import uniIm from '@/uni_modules/uni-im/sdk/index.js';
         default: ''
       },
       maxWidth: {
-        type: [String,Boolean],
+        type: [String,Number],
         default: false
       },
+      maxHeight: {
+        type: [String,Number],
+        default: ''
+      },
+      width: {
+        type: [String,Number],
+        default: ''
+      },
+      height: {
+        type: [String,Number],
+        default: ''
+      }
     },
     data() {
       return {
-        width:"1px",
-        height:"1px",
-        url: ''
+        url: '',
+        viewWidth: '',
+        viewHeight: ''
+      }
+    },
+    mounted() {
+      // console.log('beforeCreate')
+      if( this.width && this.height){
+        // 根据maxWidth 和 maxWidth，在保持宽高比例不变的情况下 计算viewWidth 和 viewHeight
+        const maxWidth = this.toPx(this.maxWidth)
+        const maxHeight = this.toPx(this.maxHeight)
+        let width = this.toPx(this.width)
+        let height = this.toPx(this.height)
+        
+        // 如果宽超过最大宽度，高度按比例缩小
+        if(width > maxWidth){
+          height = height * maxWidth / width
+          width = maxWidth
+        }
+        // 如果高超过最大高度，宽度按比例缩小
+        if(height > maxHeight){
+          width = width * maxHeight / height
+          height = maxHeight
+        }
+        this.viewWidth = width + 'px'
+        this.viewHeight = height + 'px'
       }
     },
     watch: {
@@ -37,7 +72,7 @@ import uniIm from '@/uni_modules/uni-im/sdk/index.js';
               this.url += '?imageMogr2/thumbnail/400x400>'
             }else if(src.indexOf('http') === 0){
               // 因为还可能是 base64 blob 的本地图片，所以这里判断是不是http开头的
-              this.url += '?x-oss-process=image/resize,w_100/quality,q_80'
+              this.url += '?x-oss-process=image/resize,w_200/quality,q_80'
             }
           }
         },
@@ -47,24 +82,29 @@ import uniIm from '@/uni_modules/uni-im/sdk/index.js';
     methods: {
       load(e){
         // console.log('img load',e)
-        this.width = e.detail.width
-        // 如果以rpx为单位，转换为px
-        let maxWidth = parseInt(this.maxWidth)
-        if(this.maxWidth && this.maxWidth.indexOf('rpx') > -1){
-          maxWidth = parseInt(this.maxWidth) * uniIm.systemInfo.windowWidth / 750
-        }
-        // console.log('maxWidth',maxWidth)
-        if(maxWidth && this.width > maxWidth){
-          this.width = maxWidth + 'px'
-          this.height = maxWidth * e.detail.height / e.detail.width + 'px'
-          // console.error('超了',this.width,this.height)
-        }else{
-          this.width = e.detail.width + 'px'
-          this.height = e.detail.height + 'px'
+        // TODO：渲染后再设置宽高，为兼容旧版系统，图片消息中没有带宽高的情况
+        if(!this.width || !this.height){
+          let width = e.detail.width
+          let maxWidth = this.toPx(this.maxWidth)
+          if(maxWidth && width > maxWidth){
+            this.viewWidth = maxWidth + 'px'
+            this.viewHeight = maxWidth * e.detail.height / e.detail.width + 'px'
+            // console.error('超了',this.width,this.height)
+          }else{
+            this.viewWidth = e.detail.width + 'px'
+            this.viewHeight = e.detail.height + 'px'
+          }
         }
       },
       handleClick(){
         this.$emit('click')
+      },
+      // 如果是rpx单位，转换为px
+      toPx(val){
+        if(typeof val === 'string' && val.indexOf('rpx') > -1){
+          return parseInt(val) * uniIm.systemInfo.windowWidth / 750
+        }
+        return parseInt(val)
       }
     }
   }

components/uni-im-msg-list/uni-im-msg-list.vue

@@ -32,7 +32,7 @@
      </template>
       <template v-slot:floating-block>
         <view v-if="hasNewMsg" class="new-msg-bar" @click="showLast">
-          <uni-icons type="arrow-down" size="16"></uni-icons>
+          <uni-icons type="pulldown" size="18" color="#007fff"></uni-icons>
           <text>有新消息</text>
         </view>
       </template>
@@ -372,6 +372,7 @@
       },
       async onScrollToLower() {
         this.scrollTracker.reachBottom()
+        this.hasNewMsg = false
       },
       async canHoldScrollDo(fn){
         return new Promise((resolve) => {
@@ -740,13 +741,14 @@
     position: absolute;
     display: flex;
     flex-direction: row;
-    right: 25px;
+    align-items: flex-start;
+    right: 40px;
     bottom: 10px;
     font-size: 12px;
     background-color: white;
-    border: 1px solid silver;
+    color: #007fff;
     padding: 5px 8px 5px 5px;
-    border-radius: 5px;
+    border-radius: 15px 15px 15px 15px;
     /* #ifdef H5 */
     pointer-events: auto;
     cursor: pointer;

components/uni-im-msg/types/image.vue

 <template>
   <view>
     <!-- 注意:根节点都view不能去掉，否则鼠标右键出不来菜单 -->
-    <uni-im-img max-width="100px" :src="msg.body.url" mode="widthFix" @click="previewImage" class="img" />
+    <uni-im-img max-width="200px" :src="msg.body.url" :width="msg.body.width" :height="msg.body.height" mode="widthFix" @click="previewImage" class="img" />
   </view>
 </template>
 

components/uni-im-msg/types/rich-text.vue

@@ -14,10 +14,10 @@
         </text>
         <uni-im-icons class="text isRead" v-if="isFromSelf && 'isRead' in item" :code="item.isRead?'e609':'e741'"
           size="14px" :color="item.isRead?'#25882a':'#bbb'"></uni-im-icons>
-      </template>
-      <text class="text" v-else-if="item.type == 'text'" :decode="true" space="ensp">{{item.text}}</text>
-      <uni-im-img v-else-if="item.name == 'img'" max-width="100px" @click="previewImage(item.attrs.src)"
-        :src="item.attrs.src" mode="widthFix" class="img" />
+      </template>
+      <text class="text" v-else-if="item.type == 'text'" :decode="true" space="ensp">{{item.text}}</text>
+      <uni-im-img v-else-if="item.name == 'img'" max-width="200px" @click="previewImage(item.attrs.src)"
+        :src="item.attrs.src" :width="item.attrs.width" :height="item.attrs.height" mode="widthFix" class="img" />
       <uni-link class="link" v-else-if="item.name == 'a'" :href="item.attrs.href" color="#007fff"
         :text="item.children[0].text"></uni-link>
     </template>

package.json

 {
 	"id": "uni-im",
 	"displayName": "uni-im",
-	"version": "3.0.2",
+	"version": "3.0.4",
 	"description": "uni-im是云端一体的、全平台的、免费的、开源即时通讯系统",
 	"keywords": [
         "im,即时通讯,客服,聊天"

pages/chat/chat.nvue

@@ -253,7 +253,9 @@
         aboutUserKeyword: '',
         memberListScrollTop: 0,
         chooseMoreMsg: false,
-        checkedMsgList: []
+        checkedMsgList: [],
+        // 聊天输入框内容
+        chatInputContent: '',
       };
     },
     props: {
@@ -319,24 +321,6 @@
         })
       },
       //聊天数据
-      //当前会话的聊天框文字内容
-      chatInputContent: {
-        get() {
-          // console.log('this.conversation',this.conversation);
-          return this.conversation?.chatInputContent || '';
-        },
-        set(chatInputContent) {
-          // #ifdef APP-NVUE
-          if(this.nvueSetChatInputContent){
-            clearTimeout(this.nvueSetChatInputContent)
-          }
-          this.nvueSetChatInputContent = setTimeout(()=>this.conversation.chatInputContent = chatInputContent,1000)
-          // #endif
-          // #ifndef APP-NVUE
-          this.conversation.chatInputContent = chatInputContent
-          // #endif
-        }
-      },
       canSend() {
         if(typeof this.chatInputContent === 'string'){
           return this.chatInputContent.trim() != ''
@@ -577,14 +561,14 @@
     },
     onUnload() {
       // console.log('onUnload');
-
+      
       // 关闭监听消息推送事件
       uniIm.offMsg(this.onImMsg);
-
+      
       // #ifndef H5
       uni.offKeyboardHeightChange(this.onKeyboardHeightChange)
       // #endif
-
+      
       //页面销毁之前销毁 全局变量 正在聊天的用户的id
       uniIm.currentConversationId = false
       // console.log('beforeDestroy');
@@ -660,9 +644,15 @@
       async load(param) {
         this.answerMsg = false
         // conversation_id = "single_eff0518ad35e16a8a025cc8af03e0388"
+        if(this.conversation.id){
+          // 设置（含清空）上一个会话的chatInputContent 实现多个会话之间的草稿功能
+          this.conversation.chatInputContent = this.chatInputContent
+        }
 
         // console.log('conversation_id',conversation_id);
         this.conversation = await uniIm.conversation.get(param)
+        // 初始化会话的chatInputContent
+        this.chatInputContent = this.conversation.chatInputContent
         // this.conversation.call_list = []
         // console.log('this.conversation',this.conversation)
         
@@ -863,13 +853,12 @@
         // console.log('this.uploadFileAndSendMsg res',res);
         tempFiles.forEach(async tempFile => {
           // console.log('tempFile~',tempFile);
-          let {
+          const {
             path:url,
             name,
             size
           } = tempFile;
-          
-          let {fileType} = tempFile
+          const {fileType} = tempFile
           if (!['image', 'video'].includes(fileType)) {
             fileType = 'file'
           }
@@ -888,13 +877,18 @@
             });
           }
           
-          let data = {};
-          data[fileType] = {
+          const data = {};
+          const fileInfo = {
             url,
             size,
             name
           };
-          
+          if(fileType == 'image'){
+            const {width,height} = await uni.getImageInfo({src:url});
+            fileInfo.width = width
+            fileInfo.height = height
+          }
+          data[fileType] = fileInfo
           let msg = await this.beforeSendMsg(data,false)
           // console.log('~~~beforeSendMsg',msg);
           try{
@@ -907,7 +901,7 @@
             await this.updateMsg(msg)
             this.sendMsg(msg)
           }catch(e){
-            console.error(777,e)
+            console.error('uploadFile error:',e)
           }
           
         });
@@ -1045,13 +1039,11 @@
         }
         if (typeof this.chatInputContent == 'object'){
           // 富文本（图文混排、@某人）消息
-          
           // 把字符串中带url的链接转为html的a标签的形式。1.将字符串，按是否为标签，切割为数组
           const htmlStr = this.chatInputContent.html.split(/(<[^>]+>)/)
                   // 2.找到不以<开头的字符串内的url并替换为 html的a
                   .map(str=>str.startsWith('<') ? str : uniIm.utils.replaceUrlToLink(str))
-                  .join(' ')
-          
+                  .join('')
           // 先插到消息列表
           let msg = await this.beforeSendMsg({
             "rich-text":uniIm.utils.parseHtml(htmlStr)
@@ -1062,26 +1054,36 @@
           msg.body.forEach(async item=>{
             if(item.type === 'text'){
               item.text = item.text.trim();
-            }else if(item.name === 'img' && item.attrs.src.indexOf('data:image/png;base64,') === 0){
+            }else if(item.name === 'img'){
               promiseArr.push(new Promise((resolve,reject)=>{
-                uniCloud.uploadFile({
-                  filePath: item.attrs.src,
-                  cloudPath: Date.now() + uniCloud.getCurrentUserInfo().uid + '.' + name.split('.').pop(),
-                }).then(res=>{
-                  item.attrs.src = res.fileID
-                  // console.log('上传成功',res);
-                  resolve()
-                }).catch(e=>{
-                  console.error(777,e,item.attrs.src);
-                  reject()
-                })
+                uni.getImageInfo({
+                  src:item.attrs.src,
+                  success:res=>{
+                    item.attrs.width = res.width
+                    item.attrs.height = res.height
+                    resolve()
+                  },
+                  fail:reject
+                });
               }))
+              
+              if(item.attrs.src.indexOf('data:image/png;base64,') === 0){
+                promiseArr.push(new Promise((resolve,reject)=>{
+                  uniCloud.uploadFile({
+                    filePath: item.attrs.src,
+                    cloudPath: Date.now() + uniCloud.getCurrentUserInfo().uid + '.' + name.split('.').pop(),
+                  }).then(res=>{
+                    item.attrs.src = res.fileID
+                    // console.log('上传成功',res);
+                    resolve()
+                  }).catch(e=>{
+                    reject()
+                  })
+                }))
+              }
             }
           })
           await Promise.all(promiseArr)
-          
-          // console.log('msg',msg);
-          
           // 传完更新
           await this.updateMsg(msg)
           // 执行发送
@@ -1118,10 +1120,7 @@
           msg.body = msg.body.trim();
           // 阻止发送空消息
           if (!msg.body.length) {
-            this.$nextTick(() => {
-              this.chatInputContent = '';
-              this.textareaHeight = 26;
-            });
+            this.resetChatInput()
             return uni.showToast({
               title: '不能发送空消息',
               icon: 'none'
@@ -1162,12 +1161,6 @@
             })
           }
         }
-        
-        this.$nextTick(e => {
-          this.chatInputContent = '';
-          this.textareaHeight = 26;
-          this.answerMsg = false
-        });
 
         //如果是回复某一条消息，需要带上相关id
         if (this.answerMsg !== false) {
@@ -1176,6 +1169,8 @@
 
         // 消息列表追加此消息。此时消息状态值为0，表示发送中
         let resMsg = this.conversation.msgList.push(msg)
+        
+        this.resetChatInput()
 
         this.$nextTick(() => {
           this.showLast()
@@ -1197,6 +1192,12 @@
           return msg;
         }
       },
+      resetChatInput() {
+        this.chatInputContent = ''
+        this.textareaHeight = 26
+        // 关闭引用的消息
+        this.answerMsg = false
+      },
       getCallUid(param){
         let aboutNicknameList = []
         if( this.isWidescreen){

uniCloud/cloudfunctions/common/uni-im-ext/index.js

@@ -200,7 +200,8 @@ let _registeredExtensionPointsPromise
  * @returns {any[]} 该扩展点上挂接的所有扩展程序各自的返回值拼装在一个数组里。
  */
 async function invokeExts(extensionPointName, ...args) {
-  isFsWritable = (this.getCloudInfo().provider === 'aliyun')
+  const [{ provider }] = uniCloud.getCloudInfos()
+  isFsWritable = (provider === 'aliyun')
 
   // 尝试从生成的缓存文件中加载
   let registeredExtensionPoints