find Camera Best Preview Size Value - Android Camera

Android examples for Camera:Camera Preview

  1. HOME
  2. Android
  3. Camera
  4. Camera Preview

Description

find Camera Best Preview Size Value

Demo Code

/*******************************************************************************
 * Copyright (c) 2011 MadRobot.//from   w ww.  j av  a  2s . com
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v2.1
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * 
 * Contributors:
 *  Elton Kent - initial API and implementation
 ******************************************************************************/
//package com.java2s;

import java.util.regex.Pattern;

import android.graphics.Point;

public class Main {
    private static final Pattern COMMA_PATTERN = Pattern.compile(",");

    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;
    }
}

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