> For the complete documentation index, see [llms.txt](https://docs.gpmautomate.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.gpmautomate.com/automate-zh/action-shi-yong-zhi-nan/phone-app/app-installed.md).
# 检查应用是否已安装
检查设备上是否已安装应用程序。
Is app installed 是一个检查应用程序（按包名）是否已安装在手机设备上的操作，然后将结果返回给一个变量以分支脚本（例如：未安装则安装，已安装则打开）。
#### 配置参数说明：
* Package name: 需要检查的应用程序的包名，例如 Facebook 是 `com.facebook.katana`。
* Output Variable Name: 存储返回结果的变量名称，返回布尔值（如果应用程序已安装则为 `true`，如果未安装则为 `false`）。在 If 块中使用此变量以决定下一步。
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# Agent Instructions
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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://docs.gpmautomate.com/automate-zh/action-shi-yong-zhi-nan/phone-app/app-installed.md?ask=&goal=
```
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