> For the complete documentation index, see [llms.txt](https://developers-apps-in-toss.toss.im/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers-apps-in-toss.toss.im/documentation/api-and-sdk-zh/sdk/domains-api/guang-gao/loadfullscreenad.md).

# loadFullScreenAd

### 功能说明

会预先加载集成全屏广告。优先显示 Toss Ad，在无法使用的环境中会自动切换为 AdMob，因此可以稳定展示广告。显示广告前务必调用。

会根据 Toss App 版本而有不同的行为：

| Toss App 版本                   | 支持功能                                            |
| ----------------------------- | ----------------------------------------------- |
| `5.239.0` 及以上                 | Toss Ad + AdMob 集成（优先 Toss Ad，无法使用时自动切换为 AdMob） |
| `5.227.0` 及以上 \~ `5.239.0` 未满 | 仅显示 AdMob 广告                                    |
| `5.227.0` 未满                  | 不支持                                             |

调用前 `loadFullScreenAd.isSupported()`可通过它确认是否支持。

### 类型

```ts
loadFullScreenAd(params: LoadFullScreenAdParams): () => void;
```

**参数**

```ts
type LoadFullScreenAdParams = {
  options: LoadFullScreenAdOptions;
  onEvent: (event: LoadFullScreenAdEvent) => void;
  onError: (error: unknown) => void;
};

type LoadFullScreenAdOptions = {
  /** 广告组 ID。请填写在 App in Toss 控制台中获取的值。 */
  adGroupId: string;
};

type LoadFullScreenAdEvent = {
  type: "loaded";
};
```

**响应**

用于解除 AppBridge 回调的函数（`() => void`）会被返回。

### 错误

如果广告加载失败 `onError` 错误会通过回调传递。若在不支持的版本中调用 `onError`则会传递错误，因此在调用前 `isSupported()`请通过确认。

### 示例代码

```js
import { Ads } from "@apps-in-toss/web-framework";

let isAdLoaded = false;

function prepareAd() {
  if (!loadFullScreenAd.isSupported()) {
    console.warn("当前环境中无法使用全屏广告。");
    return;
  }

  const cleanup = loadFullScreenAd({
    options: { adGroupId: "AD_GROUP_ID" },
    onEvent: (event) => {
      if (event.type === "loaded") {
        console.log("广告加载完成");
        isAdLoaded = true;
        cleanup();
      }
    },
    onError: (error) => {
      console.error("广告加载失败：", error);
      cleanup();
    },
  });
}
```


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