细节优化

im-uniapp/components/chat-item/chat-item.vue

@@ -79,6 +79,9 @@ export default {
 			return "";
 		},
 		isTextMessage() {
+			if (this.chat.messages.length == 0) {
+				return false;
+			}
 			let idx = this.chat.messages.length - 1;
 			let messageType = this.chat.messages[idx].type;
 			return messageType == this.$enums.MESSAGE_TYPE.TEXT;

im-uniapp/components/long-press-menu/long-press-menu.vue

@@ -57,7 +57,7 @@ export default {
 				}
 			})
 		},
-		onTouchMove() {
+		onTouchMove(e) {
 			this.isTouchMove = true;
 			let touches = e.touches[0];
 			// 屏幕拖动大于50px时，取消菜单

im-uniapp/pages/chat/chat-box.vue

@@ -646,7 +646,9 @@ export default {
 				// #endif
 				// #ifdef H5
 				// 防止滚动条定格在顶部，不能一直往上滚，h5采用scroll-top定位
+				if (uni.getSystemInfoSync().platform == 'ios') {
 					this.holdingScrollBar(this.scrollViewHeight);
+				}
 				// #endif
 				// 多展示20条信息
 				this.showMinIdx = this.showMinIdx > 20 ? this.showMinIdx - 20 : 0;