CameraConfigurationManager.java 文件源码

private static Point findBestPreviewSizeValue(CharSequence previewSizeValueString, Point screenResolution) {
    int bestX = 0;
    int bestY = 0;
    int diff = Integer.MAX_VALUE;
    for (String previewSize : COMMA_PATTERN.split(previewSizeValueString)) {

        previewSize = previewSize.trim();
        int dimPosition = previewSize.indexOf('x');
        if (dimPosition < 0) {
            continue;
        }

        int newX;
        int newY;
        try {
            newX = Integer.parseInt(previewSize.substring(0, dimPosition));
            newY = Integer.parseInt(previewSize.substring(dimPosition + 1));
        } catch (NumberFormatException nfe) {
            continue;
        }

        int newDiff = Math.abs(newX - screenResolution.x) + Math.abs(newY - screenResolution.y);
        if (newDiff == 0) {
            bestX = newX;
            bestY = newY;
            break;
        } else if (newDiff < diff) {
            bestX = newX;
            bestY = newY;
            diff = newDiff;
        }

    }

    if (bestX > 0 && bestY > 0) {
        return new Point(bestX, bestY);
    }
    return null;
}