java - 检测所有摄像头android

Question

我有一个应用程序使用 Camera2 API 来预览相机。我想在手机镜头之间做出选择。在我的代码中，我使用以下代码:

CameraManager manager = (CameraManager) activity.getSystemService(Context.CAMERA_SERVICE);
String[] ids = manager.getCameraIdList();

当我使用带有 2 个前置摄像头(常规和广角)和 3 个后置摄像头的 galaxy s10 时，我只能从管理器返回 4 个 ID:

0- regular rear
1- regular front
2- wide rear
3- wide front

为什么我没有 3 个后置微距摄像头。

问题出现在我的所有背面有 1 个以上摄像头的手机中

如何获得所有后置摄像头？

提前发送

Answer 1

根据文档，您只能获得逻辑摄像头。

public String[] getCameraIdList ()

Return the list of currently connected camera devices by identifier, including cameras that may be in use by other camera API clients.
Non-removable cameras use integers starting at 0 for their identifiers, while removable cameras have a unique identifier for each individual device, even if they are the same model.
This list doesn't contain physical cameras that can only be used as part of a logical multi-camera device.

Returns
String[]    The list of currently connected camera devices. This value cannot be null.

要获取物理相机，请使用此

引用资料:

https://source.android.com/devices/camera/multi-camera

Camera2 replacing one logical stream with two physical streams in Android API 29