android 获取虚拟键盘

public int getStatusBarHeight(){Class<?> c = null;Object obj = null;java.lang.reflect.Field field = null;int x = 0;int statusBarHeight = 0;try{c = Class.forName("com.android.internal.R$dimen");obj = c.newInstance();field = c.getField("status_bar_height");x = Integer.parseInt(field.get(obj).toString());statusBarHeight = getResources().getDimensionPixelSize(x);return statusBarHeight;}catch (Exception e){e.printStackTrace();}return statusBarHeight;}