有用代码段1

1、

	/**
	 * 收起状态栏
	 * 
	 * @param context
	 *            上下文对象
	 * @return 成功收起状态栏返回true,否则返回false
	 */
	public static boolean collapseStatusBar(Context context) {
		Object statusbarService = context.getSystemService("statusbar");
		if (statusbarService == null) {
			return false;
		}
		try {
			Class<?> statusBarManager = Class
					.forName("android.app.StatusBarManager");
			if (statusBarManager == null) {
				return false;
			}
			Method collapseMethod;
			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
				collapseMethod = statusBarManager.getMethod("collapsePanels");
			} else {
				collapseMethod = statusBarManager.getMethod("collapse");
			}
			if (collapseMethod == null) {
				return false;
			}
			collapseMethod.invoke(statusbarService);
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
		return true;
	}

2、

/**
	 * 展开状态栏
	 * 
	 * @param context
	 *            上下文对象
	 * @return 成功展开状态栏返回true,否则返回false
	 */
	public static boolean expandStatusBar(Context context) {
		Object statusbarService = context.getSystemService("statusbar");
		if (statusbarService == null) {
			return false;
		}
		try {
			Class<?> statusBarManager = Class
					.forName("android.app.StatusBarManager");
			if (statusBarManager == null) {
				return false;
			}
			Method expandMethod;
			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
				expandMethod = statusBarManager
						.getMethod("expandNotificationsPanel");
			} else {
				expandMethod = statusBarManager.getMethod("expand");
			}
			if (expandMethod == null) {
				return false;
			}
			expandMethod.invoke(statusbarService);
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
		return true;
	}

3、

/**
	 * 获取状态栏高度
	 * 
	 * @param context
	 *            上下文对象
	 * @return 状态栏高度
	 */
	public static int getStatusBarHeight(Context context) {
		Class<?> c = null;
		Object obj = null;
		Field field = null;
		int x = 0, 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 = context.getResources().getDimensionPixelSize(x);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return statusBarHeight;
	}

4、

/**
	 * 切换到全屏
	 * 
	 * @param activity
	 *            activity实例
	 */
	public static void switchToFullScreen(Activity activity) {
		activity.getWindow().clearFlags(
				WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
		activity.getWindow().addFlags(
				WindowManager.LayoutParams.FLAG_FULLSCREEN);
	}

5、

	/**
	 * 切换到非全屏
	 * 
	 * @param activity
	 *            activity实例
	 */
	public static void switchToNoFullScreen(Activity activity) {
		activity.getWindow().clearFlags(
				WindowManager.LayoutParams.FLAG_FULLSCREEN);
		activity.getWindow().addFlags(
				WindowManager.LayoutParams.FLAG_FORCE_NOT_FULLSCREEN);
	}

6、

	/**
	 * 开启显示触摸位置功能
	 * 
	 * @param context
	 *            上下文对象
	 */
	public static void showTouchLocation(Context context) {
		android.provider.Settings.System.putInt(context.getContentResolver(),
				"show_touches", 1);
	}

7、

	/**
	 * 关闭显示触摸位置功能
	 * 
	 * @param context
	 *            上下文对象
	 */
	public static void hideTouchLocation(Context context) {
		android.provider.Settings.System.putInt(context.getContentResolver(),
				"show_touches", 0);
	}

备注：部分代码原型来源网络。