Detect Screen density - Android Phone

Android examples for Phone:Screen

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Description

Detect Screen density

Demo Code

/**/* w  ww.java2  s .com*/
 * Copyright (C) 2013
 * Bearstouch Software : <mail@bearstouch.com>
 *
 * This file is part of Bearstouch Android Lib.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
//package com.java2s;
import android.app.Activity;

import android.util.DisplayMetrics;

public class Main {
    private static double density = -1;

    /**
     * Detect Screen density
     * 
     * @param Activity
     *            to verify Activity density
     * @return screen density
     */
    public static double getDensity(Activity activity) {
        if (density == -1) {
            DisplayMetrics displayMetrics = new DisplayMetrics();
            activity.getWindowManager().getDefaultDisplay()
                    .getMetrics(displayMetrics);
            density = displayMetrics.density;
        }

        return density;
    }
}

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