View utils

dipToPx

    /**
     * Convert a value from dip to pixel.
     *
     * @param displayMetrics the {@link android.util.DisplayMetrics} used to convert.
     * @param dip            the value in dip to convert.
     * @return a value in pixel.
     */
    public static int dipToPx(DisplayMetrics displayMetrics, float dip) {
        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dip, displayMetrics);
    }

spToPx

    /**
     * Convert a value from sp to pixel.
     *
     * @param displayMetrics the {@link android.util.DisplayMetrics} used to convert.
     * @param sp             the value in sp to convert.
     * @return a value in pixel.
     */
    public static float spToPx(DisplayMetrics displayMetrics, float sp) {
        return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp, displayMetrics);
    }