问Android Java: Camera2预览图片被拉伸

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            //getting the ratio, correct setting of sizes
        if (verh == sechzehnzuneun) {
            newSize = new Size(2300, 1350);
        } else if (verh == sechzehnzuzehn) {
            newSize = new Size(2400, 1500);
        } else if (verh == note8) {
            newSize = new Size(2792, 1440);
        }
//also used for saving
        _imageDimension = newSize;

        //used for rotating the preview, otherwise i geht some strange portrait camera 
Matrix matrix = new Matrix();
        int rotation = getWindowManager().getDefaultDisplay().getRotation();
        RectF textureRectF = new RectF(0, 0, _textureView.getWidth(), _textureView.getHeight());
        RectF previewRectF = new RectF(0, 0, _imageDimension.getHeight(), _imageDimension.getWidth());
        float centerX = textureRectF.centerX();
        float centerY = textureRectF.centerY();
        if (rotation == Surface.ROTATION_90 || rotation == Surface.ROTATION_270) {
            previewRectF.offset(centerX - previewRectF.centerX(),
                    centerY - previewRectF.centerY());
            matrix.setRectToRect(textureRectF, previewRectF, Matrix.ScaleToFit.FILL);
            float scale = Math.max((float) width / _imageDimension.getWidth(),
                    (float) height / _imageDimension.getHeight());
            matrix.postScale(scale, scale, centerX, centerY);
            matrix.postRotate(90 * (rotation - 2), centerX, centerY);
        } else {
            //neu weg wenn nicht
            previewRectF.offset(centerX - previewRectF.centerX(), centerY - previewRectF.centerY());
            matrix.setRectToRect(textureRectF, previewRectF, Matrix.ScaleToFit.FILL);
            float scale = Math.max((float)height / _imageDimension.getHeight(), (float)width / _imageDimension.getWidth());
            matrix.postScale(scale, scale,centerX,centerY);
            matrix.postRotate(0, centerX, centerY);
        }
        _textureView.setTransform(matrix);