Android:Util:Convert px dp and sp

DisplayUtil.java

import android.content.Context;

public class DisplayUtil {

    public static int convertDpToPx(Context context, int dp) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dp * scale + 0.5f);
    }

    public static int convertPxToDp(Context context, int px) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (px / scale + 0.5f);
    }

    public static int convertSpToPx(Context context, int sp) {
        final float scale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (sp * scale + 0.5f);
    }

    public static int convertPxToSp(Context context, int px) {
        final float scale = context.getResources().getDisplayMetrics().scaledDensity;
        return (int) (px / scale + 0.5f);
    }
}