Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import android.content.Context;
import android.content.res.Resources;
import android.util.DisplayMetrics;

public class Main {
    /**
     * This method converts dp unit to equivalent pixels, depending on device
     * density.
     *
     * @param context Context to get resources and device specific display metrics
     * @param dp      A value in dp (density independent pixels) unit. Which we need
     *                to convert into pixels
     * @return Value multiplied by the appropriate metric and truncated to
     * integer pixels.
     */
    public static int convertDpToPixelSize(Context context, float dp) {
        float pixels = convertDpToPixel(context, dp);
        final int res = (int) (pixels + 0.5f);
        if (res != 0) {
            return res;
        } else if (pixels == 0) {
            return 0;
        } else if (pixels > 0) {
            return 1;
        }
        return -1;
    }

    /**
     * This method converts dp unit to equivalent pixels, depending on device
     * density.
     *
     * @param context Context to get resources and device specific display metrics
     * @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
     */
    public static float convertDpToPixel(Context context, float dp) {
        return dp * (getDisplayMetrics(context).densityDpi / 160f);
    }

    public static DisplayMetrics getDisplayMetrics(Context context) {
        Resources resources = context.getResources();
        return resources.getDisplayMetrics();
    }
}