如何获得像Instagram一样的1:1比例的Android Camera2？

我的问题很简单:

如何以android.hardware.Camera21:1的比例获得Android 而不像Instagram那样变形？

我测试了GoogeSamples项目android-Camera2Basic.但是当我以1:1的比例更改预览时,图像会变形.有没有人对此有所了解？

谢谢@CommonsWare。

我按照您的建议使用了负边距（顶部和底部），并且效果很好。

为此，我只需要通过以下方式更新AutoFitTextureView GoogeSamples项目android-Camera2Basic：

public class AutoFitTextureView extends TextureView {

    //...
    private boolean mWithMargin = false;

    //...

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, widthMeasureSpec);
        int width = MeasureSpec.getSize(widthMeasureSpec);
        int height = MeasureSpec.getSize(heightMeasureSpec);
        int margin = (height - width) / 2;

        if(!mWithMargin) {
            mWithMargin = true;
            ViewGroup.MarginLayoutParams margins = ViewGroup.MarginLayoutParams.class.cast(getLayoutParams());
            margins.topMargin = -margin;
            margins.bottomMargin = -margin;
            margins.leftMargin = 0;
            margins.rightMargin = 0;
            setLayoutParams(margins);
        }

        if (0 == mRatioWidth || 0 == mRatioHeight) {
            setMeasuredDimension(width, height);
        } else {
            if (width < height) {
                setMeasuredDimension(width, width * mRatioHeight / mRatioWidth);
            } else {
                setMeasuredDimension(height * mRatioWidth / mRatioHeight, height);
            }
        }
    }
}