好的，我发现这是一个解决方案:

Ok, I found this as a solution:

首先我进入 OpenCV 库 - 2.4.5

然后在 mCamera.startPreview(); 之前的 initializeCamera() 函数中，我添加了这两个函数:

and then in initializeCamera() function before mCamera.startPreview(); I added these 2 function:

            setDisplayOrientation(mCamera, 90);
            mCamera.setPreviewDisplay(getHolder());

第一个函数是这样实现的:

and the first function implemented like this:

protected void setDisplayOrientation(Camera camera, int angle){
    Method downPolymorphic;
    try
    {
        downPolymorphic = camera.getClass().getMethod("setDisplayOrientation", new Class[] { int.class });
        if (downPolymorphic != null)
            downPolymorphic.invoke(camera, new Object[] { angle });
    }
    catch (Exception e1)
    {
        e1.printStackTrace();
    }
}

我只是提醒我使用 OpenCV.

I just reminding that I work with OpenCV.

希望这对某人有所帮助.

Hope this help someone.