无法在Android 10中访问USB摄像头

<uses-permission android:name="android.permission.CAMERA"/>
<uses-feature android:name="android.hardware.camera.any"/>
<uses-feature android:name="android.hardware.usb.host"/>

CameraManager cameraManager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
String[] cameraIds = cameraManager.getCameraIdList();
for (String cameraId : cameraIds) {
    CameraCharacteristics characteristics = cameraManager.getCameraCharacteristics(cameraId);
    Integer facing = characteristics.get(CameraCharacteristics.LENS_FACING);
    if (facing != null && facing == CameraCharacteristics.LENS_FACING_EXTERNAL) {
        // 设备支持USB摄像头
    }
}

String cameraId = "your_camera_id"; // 根据实际情况设置摄像头ID
if (checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
    requestPermissions(new String[]{Manifest.permission.CAMERA}, your_request_code);
} else {
    // 已经有摄像头权限，可以打开摄像头进行预览或拍照
}

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    if (requestCode == your_request_code) {
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            // 用户授予了摄像头权限，可以打开摄像头进行预览或拍照
        } else {
            // 用户拒绝了摄像头权限，无法访问USB摄像头
        }
    }
}