正确的纵横比在Android中

我正在开发的是画在相机上 SurfaceView 的应用程序。在开始的时候，我发现有意见的麻烦。他们没有正确地显示。所以我用下面的方法来纠正宽高比问题：

I'm developing an application that is painting the camera on a SurfaceView. At the beginning I found trouble with the views. They were not correctly shown. So I used the following method to correct the aspect ratio problem:

注：此方法在几个地方发现的一个修正为Android相机宽高比

NOTE: This method is found in several places as the one to correct aspect ratio for Android camera.

private Size getOptimalPreviewSize(List<Size> sizes, int w, int h) {
    final double ASPECT_TOLERANCE = 0.1;
    double targetRatio;

    // Check wheter is portrait or landscape
    if (orientation == 1)
        targetRatio = (double) h / w;
    else
        targetRatio = (double) w / h;

    if (sizes == null)
        return null;

    Size optimalSize = null;
    double minDiff = Double.MAX_VALUE;

    int targetHeight = h;

    // Try to find an size match aspect ratio and size
    for (Size size : sizes) {
        double ratio = (double) size.width / size.height;
        if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE)
            continue;
        if (Math.abs(size.height - targetHeight) < minDiff) {
            optimalSize = size;
            minDiff = Math.abs(size.height - targetHeight);
        }
    }

    // Cannot find the one match the aspect ratio, ignore the requirement
    if (optimalSize == null) {
        minDiff = Double.MAX_VALUE;
        for (Size size : sizes) {
            if (Math.abs(size.height - targetHeight) < minDiff) {
                optimalSize = size;
                minDiff = Math.abs(size.height - targetHeight);
            }
        }
    }
    return optimalSize;
}

这工作完美，我的相机被正确地显示。但我发现在较新的设备，如LG G3的问题。它有一项决议，该方法认为是最appropiate之一，但它是显示图像是邮筒在纵向模式，像下面的图片显示：

This worked perfect, and my camera was shown correctly. But I found problems in newer devices, such as the LG G3. It had a resolution that this method considered that was the most appropiate one, but it was showing the image with pillar boxes on portrait mode, like the image show below:

这是怎么回事？如何解决在纵向模式下，该邮筒？

Why is this happening? How can I solve this pillar box on portrait mode?