PixelUtils：像素轉換工具，pixelutils轉換工具

PixelUtils：像素轉換工具，pixelutils轉換工具

/** 像素轉換工具 */public class PixelUtils {    /**     * The context.     */    private static Context mContext = CustomApplcation.getInstance();    /**     * dp轉 px.     *     * @param value the value     * @return the int     */    public static int dp2px(float value) {        final float scale = mContext.getResources().getDisplayMetrics().densityDpi;        return (int) (value * (scale / 160) + 0.5f);    }    /**     * dp轉 px.     *     * @param value   the value     * @param context the context     * @return the int     */    public static int dp2px(float value, Context context) {        final float scale = context.getResources().getDisplayMetrics().densityDpi;        return (int) (value * (scale / 160) + 0.5f);    }    /**     * px轉dp.     *     * @param value the value     * @return the int     */    public static int px2dp(float value) {        final float scale = mContext.getResources().getDisplayMetrics().densityDpi;        return (int) ((value * 160) / scale + 0.5f);    }    /**     * px轉dp.     *     * @param value   the value     * @param context the context     * @return the int     */    public static int px2dp(float value, Context context) {        final float scale = context.getResources().getDisplayMetrics().densityDpi;        return (int) ((value * 160) / scale + 0.5f);    }    /**     * sp轉px.     *     * @param value the value     * @return the int     */    public static int sp2px(float value) {        Resources r;        if (mContext == null) {            r = Resources.getSystem();        } else {            r = mContext.getResources();        }        float spvalue = value * r.getDisplayMetrics().scaledDensity;        return (int) (spvalue + 0.5f);    }    /**     * sp轉px.     *     * @param value   the value     * @param context the context     * @return the int     */    public static int sp2px(float value, Context context) {        Resources r;        if (context == null) {            r = Resources.getSystem();        } else {            r = context.getResources();        }        float spvalue = value * r.getDisplayMetrics().scaledDensity;        return (int) (spvalue + 0.5f);    }    /**     * px轉sp.     *     * @param value the value     * @return the int     */    public static int px2sp(float value) {        final float scale = mContext.getResources().getDisplayMetrics().scaledDensity;        return (int) (value / scale + 0.5f);    }    /**     * px轉sp.     *     * @param value   the value     * @param context the context     * @return the int     */    public static int px2sp(float value, Context context) {        final float scale = context.getResources().getDisplayMetrics().scaledDensity;        return (int) (value / scale + 0.5f);    }}