有bug，setScreen应该改成这样

[aer874475222]

WindowManager windowManager = ((Activity)context).getWindowManager();
Display d = windowManager.getDefaultDisplay();
DisplayMetrics realDisplayMetrics = new DisplayMetrics();
d.getRealMetrics(realDisplayMetrics);
int realHeight = realDisplayMetrics.heightPixels;
int realWidth = realDisplayMetrics.widthPixels;
setScreen(realWidth, realHeight);