diff --git a/apis/interfaces/im.js b/apis/interfaces/im.js
index 0b2cb7e..fa8ac9e 100644
--- a/apis/interfaces/im.js
+++ b/apis/interfaces/im.js
@@ -107,15 +107,15 @@ const getGroupInfo = (groupId) => {
         url: 'im/groups/' + groupId
     })
 }
-
-/**
- * 群组基础信息
- */
+
+/**
+ * 群组基础信息
+ */
 const getGroupBase = (groupId) => {
     return request({
-        url: 'im/groups/' + groupId+ '/base'
+        url: 'im/groups/' + groupId + '/base'
     })
-}
+}
 
 const getGroupUsers = (groupId) => {
     return request({
@@ -127,24 +127,24 @@ const getGroupAnnouncements = (groupId) => {
     return request({
         url: 'im/groups/' + groupId + '/announcements'
     })
-}
-
-const createGroupAnnouncement = (groupId, content) => {
-    return request({
-        method: 'POST',
-        url: 'im/groups/' + groupId + '/announcements',
-        data: {
-            content: content
-        }
-    }) 
-}
-
-const deleteGroupAnnouncement = (groupId, announcementId) => {
-   return request({
-       method: 'DELETE',
-       url: 'im/groups/' + groupId + '/announcements/' + announcementId
-   })  
-}
+}
+
+const createGroupAnnouncement = (groupId, content) => {
+    return request({
+        method: 'POST',
+        url: 'im/groups/' + groupId + '/announcements',
+        data: {
+            content: content
+        }
+    })
+}
+
+const deleteGroupAnnouncement = (groupId, announcementId) => {
+    return request({
+        method: 'DELETE',
+        url: 'im/groups/' + groupId + '/announcements/' + announcementId
+    })
+}
 
 /**
  * 创建群聊
@@ -155,14 +155,14 @@ const createGroup = (data) => {
         url: 'im/groups',
         data: data
     })
-}
-
-const updateGroup = (groupId, data) => {
-   return request({
-       method: 'PUT',
-       url: 'im/groups/' + groupId,
-       data: data
-   }) 
+}
+
+const updateGroup = (groupId, data) => {
+    return request({
+        method: 'PUT',
+        url: 'im/groups/' + groupId,
+        data: data
+    })
 }
 
 /**
@@ -179,14 +179,24 @@ const joinGroup = (groupId) => {
         method: 'POST',
         url: 'im/groups/' + groupId + '/join'
     })
-}
-
+}
+
 const quitGroup = (groupId) => {
     return request({
         method: 'POST',
         url: 'im/groups/' + groupId + '/quit'
     })
-}
+}
+
+/**
+ * 解散群聊
+ */
+const dismissGroup = (groupId) => {
+    return request({
+        method: 'DELETE',
+        url: 'im/groups/' + groupId
+    })
+}
 
 export {
     getImToken,
@@ -201,15 +211,16 @@ export {
     searchFriend,
     pedingFriend,
     getMyGroups,
-    createGroup,
+    createGroup,
     updateGroup,
-    getGroupInfo,
+    getGroupInfo,
     getGroupBase,
-    getGroupUsers,
-    getGroupAnnouncements,
-    createGroupAnnouncement,
+    getGroupUsers,
+    getGroupAnnouncements,
+    createGroupAnnouncement,
     deleteGroupAnnouncement,
     searchGroup,
-    joinGroup,
-    quitGroup
+    joinGroup,
+    quitGroup,
+    dismissGroup
 }
diff --git a/pages/im/group/announceCreate.vue b/pages/im/group/announceCreate.vue
index 4a428f9..bf3a6c9 100644
--- a/pages/im/group/announceCreate.vue
+++ b/pages/im/group/announceCreate.vue
@@ -2,7 +2,7 @@
     <view class="create">
         <u--textarea v-model="content" count height="200" maxlength="200" placeholder="请输入公告内容"></u--textarea>
 
-        <u-button type="primary" text="发布" @click="onCreate"></u-button>
+        <u-button type="primary" text="发布" :disabled="disabled" @click="onCreate" color="#34CE98"></u-button>
     </view>
 </template>
 
@@ -20,6 +20,11 @@
         },
         onLoad(e) {
             this.targetId = e.targetId
+        },
+        computed: {
+            disabled() {
+                return this.content.length == 0 || this.content.length > 200
+            }
         },
         methods: {
             onCreate() {
diff --git a/pages/im/group/announcement.vue b/pages/im/group/announcement.vue
index 18d3906..5edd2d7 100644
--- a/pages/im/group/announcement.vue
+++ b/pages/im/group/announcement.vue
@@ -1,7 +1,7 @@
 <template>
     <view class="announce">
         <u-skeleton rows="2" :loading="loading" avatar :rows="5">
-            <view v-for="(item,index) in announcements" :key="index">
+            <view v-for="(item,index) in announcements" :key="index" class="item">
                 <view class="header">
                     <u-avatar :src="item.user.portraitUrl"></u-avatar>
                     <view class="user">
@@ -63,8 +63,19 @@
                 })
             },
             onDelete(aId) {
-                deleteGroupAnnouncement(this.targetId, aId).then(res => {
-                    this.initData()
+                uni.showModal({
+                    title: '删除公告',
+                    success: (res) => {
+                        if (res.confirm) {
+                            deleteGroupAnnouncement(this.targetId, aId).then(res => {
+                                uni.showToast({
+                                    icon: 'none',
+                                    title: '删除成功'
+                                })
+                                this.initData()
+                            })
+                        }
+                    }
                 })
             }
         }
@@ -73,36 +84,42 @@
 
 <style lang="scss" scoped>
     .announce {
-        padding: $padding;
+        padding: 0 $padding $padding $padding;
 
-        .header {
-            display: flex;
-            flex-direction: row;
+        .item {
+            border-bottom: solid 1rpx #f9f9f9 !important;
+            padding-top: $padding;
 
-            .user {
-                margin-left: $padding;
-                flex: 1;
+            .header {
+                display: flex;
+                flex-direction: row;
+                align-items: center;
 
-                .name {
-                    line-height: 44rpx;
+                .user {
+                    margin-left: $padding;
+                    flex: 1;
+                    display: flex;
+                    flex-direction: column;
+                    justify-content: space-between;
+
+                    .name {}
+
+                    .time {
+                        font-size: 24rpx;
+                        color: $text-gray-m;
+                    }
                 }
 
-                .time {
-                    margin-top: 15rpx;
-                    font-size: 24rpx;
-                    color: $text-gray-m;
+                .delete {
+                    color: $text-price;
+                    font-size: 28rpx;
                 }
             }
 
-            .delete {
-                color: $text-price;
-                font-size: 32rpx;
+            .content {
+                padding: $padding;
+                font-size: 34rpx;
             }
         }
-
-        .content {
-            padding: $padding;
-            font-size: 34rpx;
-        }
     }
 </style>
diff --git a/pages/im/group/info.vue b/pages/im/group/info.vue
index 75c05e8..416008b 100644
--- a/pages/im/group/info.vue
+++ b/pages/im/group/info.vue
@@ -39,9 +39,10 @@
             <view class="action u-border-bottom" v-else @click="onQuite">删除并退出</view>
         </view>
 
-        <u-modal :show="modalShow" title="修改群名称" showCancelButton @cancel="onHideModal" @confirm="onChangeGroupName">
+        <u-modal negativeTop="300" :show="modalShow" title="修改群名称" showCancelButton @cancel="onHideModal"
+            @confirm="onChangeGroupName">
             <view class="slot-content">
-                <u--input placeholder="群名称" border="surround" v-model="groupName"></u--input>
+                <u--input placeholder="群名称" border="surround" focus v-model="groupName"></u--input>
             </view>
         </u-modal>
     </view>
@@ -50,7 +51,9 @@
 <script>
     import {
         getGroupInfo,
-        updateGroup
+        updateGroup,
+        quitGroup,
+        dismissGroup
     } from '@/apis/interfaces/im.js'
     import {
         uploads
@@ -101,6 +104,11 @@
                     this.announcement = res.announcement
                     this.members = res.members
                     this.loaded = true
+                }).catch(err => {
+                    uni.showToast({
+                        icon: 'none',
+                        title: '群不存在'
+                    })
                 })
             },
             setStatus() {
@@ -140,17 +148,25 @@
             },
             onGroupName() {
                 this.modalShow = true
+                console.log(this.$refs.groupNameRef);
             },
             onChangeGroupName() {
-                updateGroup(this.targetId, {
-                    name: this.groupName
-                }).then(res => {
-                    this.modalShow = false
+                if (this.groupName != this.group.name) {
+                    updateGroup(this.targetId, {
+                        name: this.groupName
+                    }).then(res => {
+                        this.modalShow = false
+                        uni.showToast({
+                            icon: 'none',
+                            title: '群名称修改成功'
+                        })
+                    })
+                } else {
                     uni.showToast({
                         icon: 'none',
-                        title: '群名称修改成功'
+                        title: '无修改'
                     })
-                })
+                }
             },
             onHideModal() {
                 this.modalShow = false
@@ -174,19 +190,47 @@
                 })
             },
             onDismiss() {
-                uni.showToast({
-                    icon: 'none',
-                    title: '开发中'
+                uni.showModal({
+                    title: '解散群聊',
+                    success: (res) => {
+                        if (res.confirm) {
+                            dismissGroup(this.targetId).then(res => {
+                                uni.showToast({
+                                    icon: 'none',
+                                    title: '解散成功'
+                                })
+                                uni.switchTab({
+                                    url: '/pages/im/index'
+                                })
+                            })
+                        }
+                    }
                 })
             },
             onQuite() {
-                uni.showToast({
-                    icon: 'none',
-                    title: '开发中'
+                uni.showModal({
+                    title: '退出群聊',
+                    success: (res) => {
+                        if (res.confirm) {
+                            quitGroup(this.targetId).then(res => {
+                                uni.showToast({
+                                    icon: 'none',
+                                    title: '退出群聊成功'
+                                })
+                                uni.switchTab({
+                                    url: '/pages/im/index'
+                                })
+                            })
+                        }
+                    }
                 })
             },
             // 修改群头像
-            onGroupAvatar() {
+            onGroupAvatar() {
+                uni.showToast({
+                    icon: 'none',
+                    title: '正在打开相册'
+                })
                 uni.chooseImage({
                     count: 1,
                     sizeType: ['original'],
@@ -222,6 +266,9 @@
                                 icon: 'none'
                             })
                         })
+                    },
+                    fail: (err) => {
+                        console.log(err);
                     }
                 })
             }