获取屏幕大小、获取底部虚拟按键高度

/**  * 获取底部虚拟键盘的高度  */  public int getBottomKeyboardHeight(){             int screenHeight =  getAccurateScreenDpi()[1];             DisplayMetrics dm = new DisplayMetrics();          getWindowManager().getDefaultDisplay().getMetrics(dm);             int heightDifference = screenHeight - dm.heightPixels;             return heightDifference;  }    /**  * 获取精确的屏幕大小  */  public int[] getAccurateScreenDpi()         {         int[] screenWH = new int[2];             Display display = getWindowManager().getDefaultDisplay();             DisplayMetrics dm = new DisplayMetrics();             try {                 Class<?> c = Class.forName("android.view.Display");                 Method method = c.getMethod("getRealMetrics",DisplayMetrics.class);                 method.invoke(display, dm);                 screenWH[0] = dm.widthPixels;                 screenWH[1] = dm.heightPixels;              }catch(Exception e){                 e.printStackTrace();              }                return screenWH;     }