Uses to convert to px from dip or vice versa.

DimensionHelper.java

package com.fallavi.android.utils;

import android.content.res.Resources;
import android.util.DisplayMetrics;

/**
 * Created by olkunmustafa on 13/08/16
 *
 * Gives dimensions according to device's denisty
 */
public class DimensionHelper {

    /**
     * This method converts dp unit to equivalent pixels, depending on device density.
     *
     * @param dp A value in dp (density independent pixels) unit. Which we need to convert into pixels
     * @return A float value to represent px equivalent to dp depending on device density
     * @since 1.3.16
     */
    public static int convertDpToPixel( float dp ) {

        DisplayMetrics metrics = Resources.getSystem().getDisplayMetrics();
        return ( int ) ( dp * ( metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT ) );
    }

    /**
     * This method converts device specific pixels to density independent pixels.
     *
     * @param px A value in px (pixels) unit. Which we need to convert into db
     * @return A float value to represent dp equivalent to px value
     * @since 1.3.16
     */
    public static int convertPixelsToDp( float px ) {

        DisplayMetrics metrics = Resources.getSystem().getDisplayMetrics();
        return ( int ) ( px / ( metrics.densityDpi / DisplayMetrics.DENSITY_DEFAULT ) );
    }

}