WindowManager & DisplayMatrix

// get window manager WindowManager windowManager = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE); // get display matrix of window dm = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm); // 还可以用以下方法获得displaymetrix context.getResources().getDisplayMetrix() // DisplayMetrix 有下列property： public float density; public int densityDpi; public int heightPixels; public float scaledDensity; // 用来做sp与px的转化 public int widthPixels; public float xdpi; public float ydpi;