Android 25源码中货物屏幕尺寸

if (shouldUseDisplaySize(lp)) {                // NOTE -- system code, won't try to do compat mode.                Point size = new Point();                mDisplay.getRealSize(size);                desiredWindowWidth = size.x;                desiredWindowHeight = size.y;            } else {                Configuration config = mContext.getResources().getConfiguration();                desiredWindowWidth = dipToPx(config.screenWidthDp);                desiredWindowHeight = dipToPx(config.screenHeightDp);            }}private int dipToPx(int dip) {        final DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics();        return (int) (displayMetrics.density * dip + 0.5f);    }