獲取狀態欄高度（運用反射）

public static int getStatusHeight(Activity activity) {
		int statusHeight = 0;
		Rect localRect = new Rect();
		activity.getWindow().getDecorView()
				.getWindowVisibleDisplayFrame(localRect);
		statusHeight = localRect.top;
		if (0 == statusHeight) {
			Class<?> localClass;
			try {
				localClass = Class.forName("com.android.internal.R$dimen");
				Object localObject = localClass.newInstance();
				int i5 = Integer.parseInt(localClass
						.getField("status_bar_height").get(localObject)
						.toString());
				statusHeight = activity.getResources()
						.getDimensionPixelSize(i5);
			} catch (ClassNotFoundException e) {
				e.printStackTrace();
			} catch (IllegalAccessException e) {
				e.printStackTrace();
			} catch (InstantiationException e) {
				e.printStackTrace();
			} catch (NumberFormatException e) {
				e.printStackTrace();
			} catch (IllegalArgumentException e) {
				e.printStackTrace();
			} catch (SecurityException e) {
				e.printStackTrace();
			} catch (NoSuchFieldException e) {
				e.printStackTrace();
			}
		}
		return statusHeight;
	}

以下代碼不能放在oncreate中  否則height爲0

Rect frame = new Rect();
getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
statusBarHeight = frame.top;