imageItem 缓存池

assets/Scripts/chat18x/manager/DetailImageItemPool.ts

@@ -0,0 +1,60 @@
+import { NodePool, instantiate, Node, isValid } from "cc";
+import { DetailImageItem } from "../uiitems/DetailImageItem";
+
+export class DetailImageItemPool {
+  private static _instance: DetailImageItemPool = null;
+  
+  private _pool: NodePool;
+  private _template: Node = null;
+  
+  private constructor() {
+    this._pool = new NodePool();
+  }
+  
+  public static get Instance(): DetailImageItemPool {
+    if (!this._instance) {
+      this._instance = new DetailImageItemPool();
+    }
+    return this._instance;
+  }
+  
+  public setTemplate(template: Node): void {
+    this._template = template;
+  }
+  
+  public get(): Node {
+    let node: Node = null;
+    
+    if (this._pool.size() > 0) {
+      node = this._pool.get();
+    } else {
+      if (this._template) {
+        node = instantiate(this._template);
+      }
+    }
+    
+    if (node) {
+      const item = node.getComponent(DetailImageItem);
+      if (item && item.reset) {
+        item.reset();
+      }
+    }
+    
+    return node;
+  }
+  
+  public put(node: Node): void {
+    if (node && isValid(node)) {
+      node.removeFromParent();
+      this._pool.put(node);
+    }
+  }
+  
+  public clear(): void {
+    this._pool.clear();
+  }
+  
+  public getPoolSize(): number {
+    return this._pool.size();
+  }
+}

assets/Scripts/chat18x/manager/DetailImageItemPool.ts.meta

@@ -0,0 +1,9 @@
+{
+  "ver": "4.0.24",
+  "importer": "typescript",
+  "imported": true,
+  "uuid": "da0fc97b-079e-4f2f-b288-779e5729c21b",
+  "files": [],
+  "subMetas": {},
+  "userData": {}
+}