int width = dm.widthPixels; //宽
int height = dm.heightPixels; //高
//在service中也能得到高和宽
WindowManager mWindowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
int height0 = mWindowManager.getDefaultDisplay().getHeight();
return ""+width +" "+height + " " +width0 + " " +height0;
}