diff --git a/assets/core/gui/layer/Defines.ts b/assets/core/gui/layer/Defines.ts
index ed9cb74..29272db 100644
--- a/assets/core/gui/layer/Defines.ts
+++ b/assets/core/gui/layer/Defines.ts
@@ -2,7 +2,7 @@
  * @Author: dgflash
  * @Date: 2021-11-18 11:21:32
  * @LastEditors: dgflash
- * @LastEditTime: 2022-09-13 17:48:48
+ * @LastEditTime: 2023-01-09 11:52:38
  */
 import { Node } from "cc";
 
@@ -46,15 +46,15 @@ export interface PopViewParams extends UICallbacks {
 /** 本类型仅供gui模块内部使用，请勿在功能逻辑中使用 */
 export class ViewParams {
     /** 界面唯一标识 */
-    uuid!: string;
+    uuid: string = null!;
     /** 预制路径 */
-    prefabPath!: string;
+    prefabPath: string = null!;
     /** 传递给打开界面的参数 */
-    params: any | null;
+    params: any = null!;
     /** 窗口事件 */
-    callbacks!: UICallbacks | null;
+    callbacks: UICallbacks = null!;
     /** 是否在使用状态 */
     valid: boolean = true;
     /** 界面根节点 */
-    node: Node | null = null;
+    node: Node = null!;
 }
\ No newline at end of file
diff --git a/assets/core/gui/layer/DelegateComponent.ts b/assets/core/gui/layer/DelegateComponent.ts
index 2bd4084..8299d60 100644
--- a/assets/core/gui/layer/DelegateComponent.ts
+++ b/assets/core/gui/layer/DelegateComponent.ts
@@ -2,7 +2,7 @@
  * @Author: dgflash
  * @Date: 2022-09-01 18:00:28
  * @LastEditors: dgflash
- * @LastEditTime: 2022-09-02 13:38:43
+ * @LastEditTime: 2023-01-09 11:55:03
  */
 import { Component, Node, _decorator } from "cc";
 import { oops } from "../../Oops";
@@ -14,37 +14,33 @@ const { ccclass } = _decorator;
 @ccclass('DelegateComponent')
 export class DelegateComponent extends Component {
     /** 视图参数 */
-    viewParams: ViewParams | null = null;
+    viewParams: ViewParams = null!;
 
     /** 窗口添加 */
     add() {
-        let viewParams = this.viewParams!;
-
         // 触发窗口组件上添加到父节点后的事件
-        this.applyComponentsFunction(this.node, "onAdded", viewParams.params);
-        if (typeof viewParams.callbacks!.onAdded === "function") {
-            viewParams.callbacks!.onAdded(this.node, viewParams.params);
+        this.applyComponentsFunction(this.node, "onAdded", this.viewParams.params);
+        if (typeof this.viewParams.callbacks.onAdded === "function") {
+            this.viewParams.callbacks.onAdded(this.node, this.viewParams.params);
         }
     }
 
     /** 删除节点，该方法只能调用一次，将会触发onBeforeRemoved回调 */
     remove(isDestroy: boolean) {
-        let viewParams = this.viewParams!;
-
-        if (viewParams.valid) {
+        if (this.viewParams.valid) {
             // 触发窗口组件上移除之前的事件
-            this.applyComponentsFunction(this.node, "onBeforeRemove", viewParams.params);
+            this.applyComponentsFunction(this.node, "onBeforeRemove", this.viewParams.params);
 
             //  通知外部对象窗口组件上移除之前的事件（关闭窗口前的关闭动画处理）
-            if (typeof viewParams.callbacks!.onBeforeRemove === "function") {
-                viewParams.callbacks!.onBeforeRemove(
+            if (typeof this.viewParams.callbacks.onBeforeRemove === "function") {
+                this.viewParams.callbacks.onBeforeRemove(
                     this.node,
                     () => {
-                        this.removed(viewParams, isDestroy);
+                        this.removed(this.viewParams, isDestroy);
                     });
             }
             else {
-                this.removed(viewParams, isDestroy);
+                this.removed(this.viewParams, isDestroy);
             }
         }
     }
@@ -53,7 +49,7 @@ export class DelegateComponent extends Component {
     private removed(viewParams: ViewParams, isDestroy: boolean) {
         viewParams.valid = false;
 
-        if (typeof viewParams.callbacks!.onRemoved === "function") {
+        if (typeof viewParams.callbacks.onRemoved === "function") {
             viewParams.callbacks!.onRemoved(this.node, viewParams.params);
         }
 
@@ -69,17 +65,15 @@ export class DelegateComponent extends Component {
     }
 
     onDestroy() {
-        let viewParams = this.viewParams!;
-
         // 触发窗口组件上窗口移除之后的事件
-        this.applyComponentsFunction(this.node, "onRemoved", viewParams.params);
+        this.applyComponentsFunction(this.node, "onRemoved", this.viewParams.params);
 
         // 通知外部对象窗口移除之后的事件
-        if (typeof viewParams.callbacks!.onRemoved === "function") {
-            viewParams.callbacks!.onRemoved(this.node, viewParams.params);
+        if (typeof this.viewParams.callbacks!.onRemoved === "function") {
+            this.viewParams.callbacks!.onRemoved(this.node, this.viewParams.params);
         }
 
-        this.viewParams = null;
+        this.viewParams = null!;
     }
 
     protected applyComponentsFunction(node: Node, funName: string, params: any) {
diff --git a/assets/core/gui/layer/LayerUI.ts b/assets/core/gui/layer/LayerUI.ts
index a378676..d3861fb 100644
--- a/assets/core/gui/layer/LayerUI.ts
+++ b/assets/core/gui/layer/LayerUI.ts
@@ -10,7 +10,7 @@
  * size         : 当前层上显示的所有Node节点数。
  * clear        : 清除所有Node节点，队列当中未创建的任务也会被清除。
  */
-import { error, instantiate, isValid, Node, Prefab, warn, Widget } from "cc";
+import { Node, Prefab, Widget, error, instantiate, isValid, warn } from "cc";
 import { oops } from "../../Oops";
 import { UICallbacks, ViewParams } from "./Defines";
 import { DelegateComponent } from "./DelegateComponent";
@@ -111,12 +111,12 @@ export class LayerUI extends Node {
      */
     protected createNode(viewParams: ViewParams) {
         viewParams.valid = true;
-        let childNode: Node | null = viewParams!.node!;
-        let comp: DelegateComponent | null = childNode.getComponent(DelegateComponent);
-        childNode.parent = this;
-        comp!.add();
 
-        return childNode;
+        let comp: DelegateComponent = viewParams.node.getComponent(DelegateComponent)!;
+        viewParams.node.parent = this;
+        comp.add();
+
+        return viewParams.node;
     }
 
     /**
@@ -131,7 +131,7 @@ export class LayerUI extends Node {
         // 界面移出舞台
         let children = this.__nodes();
         for (let i = 0; i < children.length; i++) {
-            let viewParams = children[i].viewParams!;
+            let viewParams = children[i].viewParams;
             if (viewParams.prefabPath === prefabPath) {
                 if (isDestroy) {
                     // 直接释放界面
@@ -159,7 +159,7 @@ export class LayerUI extends Node {
                 this.ui_nodes.delete(viewParams.uuid);
 
             var childNode = viewParams.node;
-            var comp = childNode!.getComponent(DelegateComponent)!;
+            var comp = childNode.getComponent(DelegateComponent)!;
             comp.remove(isDestroy);
         }
     }
@@ -169,9 +169,10 @@ export class LayerUI extends Node {
      */
     private removeCache(prefabPath: string) {
         let viewParams = this.ui_cache.get(prefabPath);
-        if (viewParams && viewParams.valid == false) {
+        if (viewParams) {
             var childNode = viewParams.node;
-            childNode!.getComponent(DelegateComponent)!.remove(true);
+            var comp = childNode.getComponent(DelegateComponent)!
+            comp.remove(true);
             this.ui_nodes.delete(viewParams.uuid);
             this.ui_cache.delete(prefabPath);
         }
@@ -181,14 +182,14 @@ export class LayerUI extends Node {
      * 根据唯一标识获取节点，如果节点不存在或者还在队列中，则返回null 
      * @param uuid  唯一标识
      */
-    getByUuid(uuid: string): Node | null {
+    getByUuid(uuid: string): Node {
         let children = this.__nodes();
         for (let comp of children) {
             if (comp.viewParams && comp.viewParams.uuid === uuid) {
                 return comp.node;
             }
         }
-        return null;
+        return null!;
     }
 
     /**
@@ -199,7 +200,7 @@ export class LayerUI extends Node {
         let arr: Array<Node> = [];
         let children = this.__nodes();
         for (let comp of children) {
-            if (comp.viewParams!.prefabPath === prefabPath) {
+            if (comp.viewParams.prefabPath === prefabPath) {
                 arr.push(comp.node);
             }
         }
@@ -213,7 +214,7 @@ export class LayerUI extends Node {
     has(prefabPathOrUUID: string): boolean {
         let children = this.__nodes();
         for (let comp of children) {
-            if (comp.viewParams!.uuid === prefabPathOrUUID || comp.viewParams!.prefabPath === prefabPathOrUUID) {
+            if (comp.viewParams.uuid === prefabPathOrUUID || comp.viewParams.prefabPath === prefabPathOrUUID) {
                 return true;
             }
         }
@@ -228,7 +229,7 @@ export class LayerUI extends Node {
         let arr: Node[] = [];
         let children = this.__nodes();
         for (let comp of children) {
-            if (prefabPathReg.test(comp.viewParams!.prefabPath)) {
+            if (prefabPathReg.test(comp.viewParams.prefabPath)) {
                 arr.push(comp.node);
             }
         }