Android Vuforia Native SDK 摄像头方向 Front答案

【问题标题】：Android Vuforia Native SDK camera direction FrontAndroid Vuforia Native SDK 摄像头方向 Front
【发布时间】：2018-08-13 14:38:07
【问题描述】：

无法使用 Vuforia Native SDK 更改相机方向。

我正在改变

vuforiaAppSession.startAR(CameraDevice.CAMERA_DIRECTION.CAMERA_DIRECTION_DEFAULT);

ImageTargets.java 在 Vuforia 示例应用程序中。我用前置摄像头得到的结果只是黑屏。

这里是错误代码：

VuforiaSamples E/ImageTargets: Unable to open camera device: 2
    com.vuforia.samples.SampleApplication.SampleApplicationException: Unable to open camera device: 2
        at com.vuforia.samples.SampleApplication.SampleApplicationSession.startCameraAndTrackers(SampleApplicationSession.java:153)
        at com.vuforia.samples.SampleApplication.SampleApplicationSession.access$900(SampleApplicationSession.java:31)
        at com.vuforia.samples.SampleApplication.SampleApplicationSession$StartVuforiaTask.doInBackground(SampleApplicationSession.java:623)
        at com.vuforia.samples.SampleApplication.SampleApplicationSession$StartVuforiaTask.doInBackground(SampleApplicationSession.java:604)
        at android.os.AsyncTask$2.call(AsyncTask.java:333)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:245)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
        at java.lang.Thread.run(Thread.java:764)

找不到更具体的信息。

【问题讨论】：

标签： android sdk native augmented-reality vuforia

【解决方案1】：

据我所知，Vuforia 已弃用此选项。

见CameraDevice.CAMERA_DIRECTION Class Reference。 C++ 头文件也一样：

enum CAMERA_DIRECTION
{ 
    CAMERA_DIRECTION_DEFAULT,   ///< Default camera direction (device-specific,
                                ///  usually maps to back camera) (DEPRECATED)
    CAMERA_DIRECTION_BACK,      ///< The camera is facing in the opposite direction as the screen (DEPRECATED)
    CAMERA_DIRECTION_FRONT,     ///< The camera is facing in the same direction as the screen. (DEPRECATED)
                                ///< Notes: This enum is deprecated.
                                ///< Front camera support will be removed in a future Vuforia release.
                                ///< The front camera is not compatible with DeviceTracker
                                ///< nor with SmartTerrain.
};

【讨论】：